Arcade Package API

This page documents the Application Programming Interface (API) for the Python Arcade library. Soo also:

• Quick API Index

• How-To Example Code

Arcade Sub Modules

• arcade.key package
• arcade.csscolor package
• arcade.color package
• arcade.gl package
• arcade.gui package
• Resources

Main Arcade Module Package API

The Arcade Library

A Python simple, easy to use module for creating 2D games.

class arcade.AStarBarrierList(moving_sprite: arcade.Sprite, blocking_sprites: arcade.SpriteList, grid_size: int, left: int, right: int, bottom: int, top: int)

Bases: object

Class that manages a list of barriers that can be encountered during A* path finding.

__init__(moving_sprite: arcade.Sprite, blocking_sprites: arcade.SpriteList, grid_size: int, left: int, right: int, bottom: int, top: int)

Parameters

• moving_sprite (Sprite) – Sprite that will be moving

• blocking_sprites (SpriteList) – Sprites that can block movement

• grid_size (int) – Size of the grid, in pixels

• left (int) – Left border of playing field

• right (int) – Right border of playing field

• bottom (int) – Bottom of playing field

• top (int) – Top of playing field

recalculate()

Recalculate blocking sprites.

class arcade.AnimatedTimeBasedSprite(filename: Optional[str] = None, scale: float = 1, image_x: float = 0, image_y: float = 0, image_width: float = 0, image_height: float = 0, center_x: float = 0, center_y: float = 0, _repeat_count_x=1, _repeat_count_y=1)

Bases: arcade.Sprite

Sprite for platformer games that supports animations. These can be automatically created by the Tiled Map Editor.

__init__(filename: Optional[str] = None, scale: float = 1, image_x: float = 0, image_y: float = 0, image_width: float = 0, image_height: float = 0, center_x: float = 0, center_y: float = 0, _repeat_count_x=1, _repeat_count_y=1)

update_animation(delta_time: float = 0.016666666666666666)

Logic for selecting the proper texture to use.

class arcade.AnimatedTimeSprite(scale: float = 1, image_x: float = 0, image_y: float = 0, center_x: float = 0, center_y: float = 0)

Bases: arcade.Sprite

Deprecated class for periodically updating sprite animations. Use AnimatedTimeBasedSprite instead.

__init__(scale: float = 1, image_x: float = 0, image_y: float = 0, center_x: float = 0, center_y: float = 0)

update_animation(delta_time: float = 0.016666666666666666)

Logic for selecting the proper texture to use.

class arcade.AnimatedWalkingSprite(scale: float = 1, image_x: float = 0, image_y: float = 0, center_x: float = 0, center_y: float = 0)

Bases: arcade.Sprite

Sprite for platformer games that supports walking animations. Make sure to call update_animation after loading the animations so the initial texture can be set. Or manually set it. For a better example, see: http://arcade.academy/examples/platformer.html#animate-character

__init__(scale: float = 1, image_x: float = 0, image_y: float = 0, center_x: float = 0, center_y: float = 0)

update_animation(delta_time: float = 0.016666666666666666)

Logic for selecting the proper texture to use.

class arcade.AnimationKeyframe(tile_id: int, duration: int, texture: arcade.texture.Texture)

Bases: object

Used in animated sprites.

__init__(tile_id: int, duration: int, texture: arcade.texture.Texture) → None

duration: int

texture: arcade.texture.Texture

tile_id: int

class arcade.ArcadeContext(window: pyglet.window.BaseWindow, gc_mode: str = 'auto')

Bases: arcade.gl.context.Context

An OpenGL context implementation for Arcade with added custom features. This context is normally accessed thought arcade.Window.ctx.

Pyglet users can use the base Context class and extend that as they please.

This is part of the low level rendering API in arcade and is mainly for more advanced usage

__init__(window: pyglet.window.BaseWindow, gc_mode: str = 'auto')

Parameters

• window (pyglet.window.Window) – The pyglet window

• gc_mode (str) – The gabage collection mode for opengl objects. auto (default) is just what we would expect in python while context_gc requires you to call Context.gc(). The latter can be useful when using multiple threads when it’s not clear what thread will gc the object.

load_program(*, vertex_shader: Union[str, pathlib.Path], fragment_shader: Optional[Union[str, pathlib.Path]] = None, geometry_shader: Optional[Union[str, pathlib.Path]] = None, tess_control_shader: Optional[Union[str, pathlib.Path]] = None, tess_evaluation_shader: Optional[Union[str, pathlib.Path]] = None, defines: Optional[dict] = None) → arcade.gl.program.Program

Create a new program given a file names that contain the vertex shader and fragment shader. Note that fragment and geometry shader are optional for when transform shaders are loaded.

This method also supports the :resources: prefix. It’s recommended to use absolute paths, but not required.

Example:

# The most common use case if having a vertex and fragment shader
program = window.ctx.load_program(
    vertex_shader="vert.glsl",
    fragment_shader="frag.glsl",
)

Parameters

• vertex_shader (Union[str,pathlib.Path]) – path to vertex shader

• fragment_shader (Union[str,pathlib.Path]) – path to fragment shader (optional)

• geometry_shader (Union[str,pathlib.Path]) – path to geometry shader (optional)

• defines (dict) – Substitute #define values in the source

load_texture(path: Union[str, pathlib.Path], *, flip: bool = True, build_mipmaps=False) → arcade.gl.texture.Texture

Loads and creates an OpenGL 2D texture. Currently all textures are converted to RGBA.

Example:

texture = window.ctx.load_texture("background.png")

Parameters

• path (Union[str,pathlib.Path]) – Path to texture

• flip (bool) – Flips the image upside down

• build_mipmaps (bool) – Build mipmaps for the texture

property projection_2d: Tuple[float, float, float, float]

Get or set the global orthogonal projection for arcade.

This projection is used by sprites and shapes and is represented by four floats: (left, right, bottom, top)

Type

Tuple[float, float, float, float]

property projection_2d_matrix

Get the current projection matrix as a numpy array. This 4x4 float32 matrix is calculated when setting projection_2d.

class arcade.CreateText(text: str, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 20, align='left', font_name=('Calibri', 'Arial'), bold: bool = False, italic: bool = False, anchor_x='left', anchor_y='baseline', rotation=0)

Bases: object

Class used for managing text

__init__(text: str, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 20, align='left', font_name=('Calibri', 'Arial'), bold: bool = False, italic: bool = False, anchor_x='left', anchor_y='baseline', rotation=0)

class arcade.EmitBurst(count: int)

Bases: arcade.emitter.EmitController

Used to configure an Emitter to emit particles in one burst

__init__(count: int)

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.EmitController

Bases: object

Base class for how a client configure the rate at which an Emitter emits Particles

Subclasses allow the client to control the rate and duration of emitting

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.EmitInterval(emit_interval: float)

Bases: arcade.emitter.EmitController

Base class used to configure an Emitter to have a constant rate of emitting. Will emit indefinitely.

__init__(emit_interval: float)

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.EmitMaintainCount(particle_count: int)

Bases: arcade.emitter.EmitController

Used to configure an Emitter so it emits particles so that the given count is always maintained

__init__(particle_count: int)

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.Emitter(center_xy: Union[Tuple[float, float], List[float]], emit_controller: arcade.emitter.EmitController, particle_factory: Callable[[arcade.emitter.Emitter], arcade.particle.Particle], change_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), emit_done_cb: Optional[Callable[[arcade.emitter.Emitter], None]] = None, reap_cb: Optional[Callable[], None]] = None)

Bases: object

Emits and manages Particles over their lifetime. The foundational class in a particle system.

__init__(center_xy: Union[Tuple[float, float], List[float]], emit_controller: arcade.emitter.EmitController, particle_factory: Callable[[arcade.emitter.Emitter], arcade.particle.Particle], change_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), emit_done_cb: Optional[Callable[[arcade.emitter.Emitter], None]] = None, reap_cb: Optional[Callable[], None]] = None)

can_reap()

Determine if Emitter can be deleted

draw()

get_count()

get_pos() → Union[Tuple[float, float], List[float]]

Get position of emitter

update()

class arcade.EmitterIntervalWithCount(emit_interval: float, particle_count: int)

Bases: arcade.emitter.EmitInterval

Configure an Emitter to emit particles with given interval, ending after emitting given number of particles

__init__(emit_interval: float, particle_count: int)

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.EmitterIntervalWithTime(emit_interval: float, lifetime: float)

Bases: arcade.emitter.EmitInterval

Configure an Emitter to emit particles with given interval, ending after given number of seconds

__init__(emit_interval: float, lifetime: float)

how_many(delta_time: float, current_particle_count: int) → int

is_complete() → bool

class arcade.EternalParticle(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

Bases: arcade.particle.Particle

Particle that has no end to its life

__init__(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

can_reap()

Determine if Particle can be deleted

class arcade.FadeParticle(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], lifetime: float, center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, start_alpha: int = 255, end_alpha: int = 0, mutation_callback=None)

Bases: arcade.particle.LifetimeParticle

Particle that animates its alpha between two values during its lifetime

__init__(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], lifetime: float, center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, start_alpha: int = 255, end_alpha: int = 0, mutation_callback=None)

update()

Advance the Particle’s simulation

class arcade.LifetimeParticle(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], lifetime: float, center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

Bases: arcade.particle.Particle

Particle that lives for a given amount of time and is then deleted

__init__(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], lifetime: float, center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0, change_angle: float = 0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

can_reap()

Determine if Particle can be deleted

update()

Advance the Particle’s simulation

class arcade.Matrix3x3

Bases: object

__init__()

multiply(o: List[float])

reset()

rotate(phi: float)

scale(sx: float, sy: float)

shear(sx: float, sy: float)

translate(tx: float, ty: float)

class arcade.NamedPoint(x, y)

Bases: tuple

x

Alias for field number 0

y

Alias for field number 1

exception arcade.NoOpenGLException

Bases: Exception

Exception when we can’t get an OpenGL 3.3+ context

class arcade.Particle(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0.0, change_angle: float = 0.0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

Bases: arcade.Sprite

Sprite that is emitted from an Emitter

__init__(filename_or_texture: Union[str, arcade.texture.Texture], change_xy: Union[Tuple[float, float], List[float]], center_xy: Union[Tuple[float, float], List[float]] = (0.0, 0.0), angle: float = 0.0, change_angle: float = 0.0, scale: float = 1.0, alpha: int = 255, mutation_callback=None)

can_reap()

Determine if Particle can be deleted

update()

Advance the Particle’s simulation

class arcade.PhysicsEnginePlatformer(player_sprite: arcade.Sprite, platforms: arcade.SpriteList, gravity_constant: float = 0.5, ladders: Optional[arcade.SpriteList] = None)

Bases: object

Simplistic physics engine for use in a platformer. It is easier to get started with this engine than more sophisticated engines like PyMunk. Note, it does not currently handle rotation.

__init__(player_sprite: arcade.Sprite, platforms: arcade.SpriteList, gravity_constant: float = 0.5, ladders: Optional[arcade.SpriteList] = None)

Create a physics engine for a platformer.

Parameters

• player_sprite (Sprite) – The moving sprite

• platforms (SpriteList) – The sprites it can’t move through

• gravity_constant (float) – Downward acceleration per frame

• ladders (SpriteList) – Ladders the user can climb on

can_jump(y_distance=5) → bool

Method that looks to see if there is a floor under the player_sprite. If there is a floor, the player can jump and we return a True.

Returns

True if there is a platform below us

Return type

bool

disable_multi_jump()

Disables multi-jump.

Calling this function also removes the requirement to call increment_jump_counter() every time the player jumps.

enable_multi_jump(allowed_jumps: int)

Enables multi-jump. allowed_jumps should include the initial jump. (1 allows only a single jump, 2 enables double-jump, etc)

If you enable multi-jump, you MUST call increment_jump_counter() every time the player jumps. Otherwise they can jump infinitely.

Parameters

allowed_jumps (int) –

increment_jump_counter()

Updates the jump counter for multi-jump tracking

is_on_ladder()

Return ‘true’ if the player is in contact with a sprite in the ladder list.

jump(velocity: int)

Have the character jump.

update()

Move everything and resolve collisions.

Returns

SpriteList with all sprites contacted. Empty list if no sprites.

class arcade.PhysicsEngineSimple(player_sprite: arcade.Sprite, walls: arcade.SpriteList)

Bases: object

Simplistic physics engine for use in games without gravity, such as top-down games. It is easier to get started with this engine than more sophisticated engines like PyMunk. Note, it does not currently handle rotation.

__init__(player_sprite: arcade.Sprite, walls: arcade.SpriteList)

Create a simple physics engine.

Parameters

• player_sprite (Sprite) – The moving sprite

• walls (SpriteList) – The sprites it can’t move through

update()

Move everything and resolve collisions.

Returns

SpriteList with all sprites contacted. Empty list if no sprites.

class arcade.PyMunk

Bases: object

Object used to hold pymunk info for a sprite.

__init__()

Set up pymunk object

class arcade.PymunkPhysicsEngine(gravity=(0, 0), damping: float = 1.0)

Bases: object

Pymunk Physics Engine

DYNAMIC = 0

KINEMATIC = 1

MOMENT_INF = inf

STATIC = 2

__init__(gravity=(0, 0), damping: float = 1.0)

add_collision_handler(first_type: str, second_type: str, begin_handler: Optional[Callable] = None, pre_handler: Optional[Callable] = None, post_handler: Optional[Callable] = None, separate_handler: Optional[Callable] = None)

Add code to handle collisions between objects.

add_sprite(sprite: arcade.Sprite, mass: float = 1, friction: float = 0.2, elasticity: Optional[float] = None, moment=None, body_type=0, damping=None, gravity=None, max_velocity=None, max_horizontal_velocity=None, max_vertical_velocity=None, radius: float = 0, collision_type: str = 'default')

Add a sprite to the physics engine.

add_sprite_list(sprite_list, mass: float = 1, friction: float = 0.2, elasticity: Optional[float] = None, moment=None, body_type=0, collision_type=None)

Add all sprites in a sprite list to the physics engine.

apply_force(sprite, force)

Apply force to a Sprite.

apply_impulse(sprite, impulse)

Apply an impulse force on a sprite

apply_opposite_running_force(sprite: arcade.Sprite)

If a sprite goes left while on top of a dynamic sprite, that sprite should get pushed to the right.

check_grounding(sprite: arcade.Sprite)

See if the player is on the ground. Used to see if we can jump.

get_physics_object(sprite: arcade.Sprite) → arcade.pymunk_physics_engine.PymunkPhysicsObject

Get the shape/body for a sprite.

get_sprite_for_shape(shape) → Optional[arcade.Sprite]

Given a shape, what sprite is associated with it?

get_sprites_from_arbiter(arbiter)

Given a collision arbiter, return the sprites associated with the collision.

is_on_ground(sprite)

Return true of sprite is on top of something.

remove_sprite(sprite: arcade.Sprite)

Remove a sprite from the physics engine.

resync_sprites()

Set visual sprites to be the same location as physics engine sprites. Call this after stepping the pymunk physics engine

set_friction(sprite, friction)

Apply force to a Sprite.

set_horizontal_velocity(sprite, velocity)

Set a sprite’s velocity

set_position(sprite, position)

Apply an impulse force on a sprite

set_velocity(sprite, velocity)

Apply an impulse force on a sprite

step(delta_time: float = 0.016666666666666666, resync_sprites: bool = True)

Tell the physics engine to perform calculations.

Parameters

• delta_time (float) – Time to move the simulation forward. Keep this value constant, do not use varying values for each step.

• resync_sprites (bool) – Resynchronize Arcade graphical sprites to be at the same location as their Pymunk counterparts. If running multiple steps per frame, set this to false for the first steps, and true for the last step that’s part of the update.

class arcade.PymunkPhysicsObject(body: Optional[pymunk.body.Body] = None, shape: Optional[pymunk.shapes.Shape] = None)

Bases: object

Object that holds pymunk body/shape for a sprite.

__init__(body: Optional[pymunk.body.Body] = None, shape: Optional[pymunk.shapes.Shape] = None)

Init

class arcade.Shape

Bases: object

Primitive drawing shape. This can be part of a ShapeElementList so shapes can be drawn faster in batch.

__init__()

draw()

Draw this shape. Drawing this way isn’t as fast as drawing multiple shapes batched together in a ShapeElementList.

class arcade.ShapeElementList

Bases: Generic[arcade.TShape]

A program can put multiple drawing primitives in a ShapeElementList, and then move and draw them as one. Do this when you want to create a more complex object out of simpler primitives. This also speeds rendering as all objects are drawn in one operation.

__init__()

Initialize the sprite list

property angle: float

Get the angle of the ShapeElementList in degrees.

append(item: arcade.TShape)

Add a new shape to the list.

property center_x: float

Get the center x coordinate of the ShapeElementList.

property center_y: float

Get the center y coordinate of the ShapeElementList.

draw()

Draw everything in the list.

move(change_x: float, change_y: float)

Move all the shapes ion the list :param change_x: Amount to move on the x axis :param change_y: Amount to move on the y axis

remove(item: arcade.TShape)

Remove a specific shape from the list.

class arcade.Sound(file_name: Union[str, pathlib.Path], streaming: bool = False)

Bases: object

This class represents a sound you can play.

__init__(file_name: Union[str, pathlib.Path], streaming: bool = False)

get_length() → float

Get length of audio in seconds

get_stream_position(player: pyglet.media.player.Player) → float

Return where we are in the stream. This will reset back to zero when it is done playing.

Parameters

player (pyglet.media.Player) – Player returned from play_sound().

get_volume(player: pyglet.media.player.Player) → float

Get the current volume.

Parameters

player (pyglet.media.Player) – Player returned from play_sound().

Returns

A float, 0 for volume off, 1 for full volume.

Return type

float

is_complete(player: pyglet.media.player.Player) → bool

Return true if the sound is done playing.

is_playing(player: pyglet.media.player.Player) → bool

Return if the sound is currently playing or not

Parameters

player (pyglet.media.Player) – Player returned from play_sound().

Returns

A boolean, True if the sound is playing.

Return type

bool

play(volume: float = 1.0, pan: float = 0.0, loop: bool = False) → pyglet.media.player.Player

Play the sound.

Parameters

• volume (float) – Volume, from 0=quiet to 1=loud

• pan (float) – Pan, from -1=left to 0=centered to 1=right

• loop (bool) – Loop, false to play once, true to loop continously

set_volume(volume, player: pyglet.media.player.Player) → None

Set the volume of a sound as it is playing.

Parameters

• volume (float) – Floating point volume. 0 is silent, 1 is full.

• player (pyglet.media.Player) – Player returned from play_sound().

stop(player: pyglet.media.player.Player) → None

Stop a currently playing sound.

class arcade.Sprite(filename: Optional[str] = None, scale: float = 1, image_x: float = 0, image_y: float = 0, image_width: float = 0, image_height: float = 0, center_x: float = 0, center_y: float = 0, repeat_count_x: int = 1, repeat_count_y: int = 1, flipped_horizontally: bool = False, flipped_vertically: bool = False, flipped_diagonally: bool = False, mirrored: Optional[bool] = None, hit_box_algorithm: str = 'Simple', hit_box_detail: float = 4.5)

Bases: object

Class that represents a ‘sprite’ on-screen. Most games center around sprites. For examples on how to use this class, see: http://arcade.academy/examples/index.html#sprites

Attributes:

alpha

Transparency of sprite. 0 is invisible, 255 is opaque.

angle

Rotation angle in degrees.

radians

Rotation angle in radians.

bottom

Set/query the sprite location by using the bottom coordinate. This will be the ‘y’ of the bottom of the sprite.

boundary_left

Used in movement. Left boundary of moving sprite.

boundary_right

Used in movement. Right boundary of moving sprite.

boundary_top

Used in movement. Top boundary of moving sprite.

boundary_bottom

Used in movement. Bottom boundary of moving sprite.

center_x

X location of the center of the sprite

center_y

Y location of the center of the sprite

change_x

Movement vector, in the x direction.

change_y

Movement vector, in the y direction.

change_angle

Change in rotation.

color

Color tint the sprite

collision_radius

Used as a fast-check to see if this item is close enough to another item. If this check works, we do a slower more accurate check. You probably don’t want to use this field. Instead, set points in the hit box.

cur_texture_index

Index of current texture being used.

guid

Unique identifier for the sprite. Useful when debugging.

height

Height of the sprite.

force

Force being applied to the sprite. Useful when used with Pymunk for physics.

left

Set/query the sprite location by using the left coordinate. This will be the ‘x’ of the left of the sprite.

points

Points, in relation to the center of the sprite, that are used for collision detection. Arcade defaults to creating points for a rectangle that encompass the image. If you are creating a ramp or making better hit-boxes, you can custom-set these.

position

A list with the (x, y) of where the sprite is.

repeat_count_x

Unused

repeat_count_y

Unused

right

Set/query the sprite location by using the right coordinate. This will be the ‘y=x’ of the right of the sprite.

sprite_lists

List of all the sprite lists this sprite is part of.

texture

Texture class with the current texture.

textures

List of textures associated with this sprite.

top

Set/query the sprite location by using the top coordinate. This will be the ‘y’ of the top of the sprite.

scale

Scale the image up or down. Scale of 1.0 is original size, 0.5 is 1/2 height and width.

velocity

Change in x, y expressed as a list. (0, 0) would be not moving.

width

Width of the sprite

It is common to over-ride the update method and provide mechanics on movement or other sprite updates.

__init__(filename: Optional[str] = None, scale: float = 1, image_x: float = 0, image_y: float = 0, image_width: float = 0, image_height: float = 0, center_x: float = 0, center_y: float = 0, repeat_count_x: int = 1, repeat_count_y: int = 1, flipped_horizontally: bool = False, flipped_vertically: bool = False, flipped_diagonally: bool = False, mirrored: Optional[bool] = None, hit_box_algorithm: str = 'Simple', hit_box_detail: float = 4.5)

Create a new sprite.

Parameters

• filename (str) – Filename of an image that represents the sprite.

• scale (float) – Scale the image up or down. Scale of 1.0 is none.

• image_x (float) – X offset to sprite within sprite sheet.

• image_y (float) – Y offset to sprite within sprite sheet.

• image_width (float) – Width of the sprite

• image_height (float) – Height of the sprite

• center_x (float) – Location of the sprite

• center_y (float) – Location of the sprite

• flipped_horizontally (bool) – Mirror the sprite image. Flip left/right across vertical axis.

• flipped_vertically (bool) – Flip the image up/down across the horizontal axis.

• flipped_diagonally (bool) – Transpose the image, flip it across the diagonal.

• mirrored – Deprecated.

• hit_box_algorithm (str) –

  One of ‘None’, ‘Simple’ or ‘Detailed’. Defaults to ‘Simple’. Use ‘Simple’ for the PhysicsEngineSimple, PhysicsEnginePlatformer and ‘Detailed’ for the PymunkPhysicsEngine.

  

  hit_box_algorithm = “None”

  

  hit_box_algorithm = “Simple”

  

  hit_box_algorithm = “Detailed”

• hit_box_detail (float) – Float, defaults to 4.5. Used with ‘Detailed’ to hit box

add_spatial_hashes()

Add spatial hashes for this sprite in all the sprite lists it is part of.

property alpha: int

Return the alpha associated with the sprite.

property angle: float

Get the angle of the sprite’s rotation.

append_texture(texture: arcade.texture.Texture)

Appends a new texture to the list of textures that can be applied to this sprite.

Parameters

texture (arcade.Texture) – Texture to add ot the list of available textures

property bottom: float

Return the y coordinate of the bottom of the sprite.

property center_x: float

Get the center x coordinate of the sprite.

property center_y: float

Get the center y coordinate of the sprite.

property change_x: float

Get the velocity in the x plane of the sprite.

property change_y: float

Get the velocity in the y plane of the sprite.

clear_spatial_hashes()

Search the sprite lists this sprite is a part of, and remove it from any spatial hashes it is a part of.

collides_with_list(sprite_list: SpriteList) → list

Check if current sprite is overlapping with any other sprite in a list

Parameters

sprite_list (SpriteList) – SpriteList to check against

Returns

SpriteList of all overlapping Sprites from the original SpriteList

Return type

SpriteList

collides_with_point(point: Union[Tuple[float, float], List[float]]) → bool

Check if point is within the current sprite.

Parameters

point (Point) – Point to check.

Returns

True if the point is contained within the sprite’s boundary.

Return type

bool

collides_with_sprite(other: arcade.Sprite) → bool

Will check if a sprite is overlapping (colliding) another Sprite.

Parameters

other (Sprite) – the other sprite to check against.

Returns

True or False, whether or not they are overlapping.

Return type

bool

property collision_radius

Get the collision radius.

Note

Final collision checking is done via geometry that was set in get_points/set_points. These points are used in the check_for_collision function. This collision_radius variable is used as a “pre-check.” We do a super-fast check with collision_radius and see if the sprites are close. If they are, then we look at the geometry and figure if they really are colliding.

property color: Union[Tuple[int, int, int], List[int]]

Return the RGB color associated with the sprite.

draw()

Draw the sprite.

draw_hit_box(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]] = (0, 0, 0), line_thickness: float = 1)

Draw a sprite’s hit-box.

The ‘hit box’ drawing is cached, so if you change the color/line thickness later, it won’t take.

Parameters

• color – Color of box

• line_thickness – How thick the box should be

forward(speed: float = 1.0)

Set a Sprite’s position to speed by its angle :param speed: speed factor

get_adjusted_hit_box() → Sequence[Union[Tuple[float, float], List[float]]]

Get the points that make up the hit box for the rect that makes up the sprite, including rotation and scaling.

get_hit_box() → Sequence[Union[Tuple[float, float], List[float]]]

Get a sprite’s hit box, unadjusted for translation, rotation, or scale.

get_points() → Sequence[Union[Tuple[float, float], List[float]]]

Get the points that make up the hit box for the rect that makes up the sprite, including rotation and scaling.

property height: float

Get the height in pixels of the sprite.

property hit_box: Sequence[Union[Tuple[float, float], List[float]]]

Get a sprite’s hit box, unadjusted for translation, rotation, or scale.

kill()

Alias of remove_from_sprite_lists

property left: float

Return the x coordinate of the left-side of the sprite’s hit box.

on_update(delta_time: float = 0.016666666666666666)

Update the sprite. Similar to update, but also takes a delta-time.

property points: Sequence[Union[Tuple[float, float], List[float]]]

Get the points that make up the hit box for the rect that makes up the sprite, including rotation and scaling.

property position: Union[Tuple[float, float], List[float]]

Get the center x and y coordinates of the sprite.

Returns:

(center_x, center_y)

pymunk_moved(physics_engine, dx, dy, d_angle)

Called by the pymunk physics engine if this sprite moves.

property radians: float

Converts the degrees representation of self.angle into radians. :return: float

register_physics_engine(physics_engine)

Called by the Pymunk physics engine when this sprite is added to that physics engine. Lets the sprite know about the engine and remove itself if it gets deleted.

register_sprite_list(new_list)

Register this sprite as belonging to a list. We will automatically remove ourselves from the the list when kill() is called.

remove_from_sprite_lists()

Remove the sprite from all sprite lists.

rescale_relative_to_point(point: Union[Tuple[float, float], List[float]], factor: float) → None

Rescale the sprite relative to a different point than its center.

reverse(speed: float = 1.0)

Set a new speed, but in reverse. :param speed: speed factor

property right: float

Return the x coordinate of the right-side of the sprite’s hit box.

property scale: float

Get the scale of the sprite.

set_hit_box(points: Sequence[Union[Tuple[float, float], List[float]]])

Set a sprite’s hit box. Hit box should be relative to a sprite’s center, and with a scale of 1.0. Points will be scaled with get_adjusted_hit_box.

set_points(points: Sequence[Union[Tuple[float, float], List[float]]])

Set a sprite’s hitbox

set_position(center_x: float, center_y: float)

Set a sprite’s position

Parameters

• center_x (float) – New x position of sprite

• center_y (float) – New y position of sprite

set_texture(texture_no: int)

Sets texture by texture id. Should be renamed because it takes a number rather than a texture, but keeping this for backwards compatibility.

stop()

Stop the Sprite’s motion

strafe(speed: float = 1.0)

Set a sprites position perpendicular to its angle by speed :param speed: speed factor

property texture

property texture_transform: arcade.texture.Matrix3x3

property top: float

Return the y coordinate of the top of the sprite.

turn_left(theta: float = 90)

Rotate the sprite left a certain number of degrees. :param theta: change in angle

turn_right(theta: float = 90)

Rotate the sprite right a certain number of degrees. :param theta: change in angle

update()

Update the sprite.

update_animation(delta_time: float = 0.016666666666666666)

Override this to add code that will change what image is shown, so the sprite can be animated.

Parameters

delta_time (float) – Time since last update.

property width: float

Get the width of the sprite.

class arcade.SpriteCircle(radius: int, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], soft: bool = False)

Bases: arcade.Sprite

This sprite is just an elliptical sprite of one solid color. No need to use an image file.

__init__(radius: int, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], soft: bool = False)

Parameters

• radius (float) – Radius of the circle

• color (Color) – Color of the circle

• soft (bool) – If True, will add a alpha gradient

class arcade.SpriteList(use_spatial_hash=None, spatial_hash_cell_size=128, is_static=False)

Bases: object

Keep a list of sprites. Contains many optimizations around batch-drawing sprites and doing collision detection. For optimization reasons, use_spatial_hash and is_static are very important.

__init__(use_spatial_hash=None, spatial_hash_cell_size=128, is_static=False)

Initialize the sprite list

Parameters

• use_spatial_hash (bool) – If set to True, this will make moving a sprite in the SpriteList slower, but it will speed up collision detection with items in the SpriteList. Great for doing collision detection with static walls/platforms.

• spatial_hash_cell_size (int) –

• is_static (bool) – Speeds drawing if the sprites in the list do not move. Will result in buggy behavior if the sprites move when this is set to True.

append(item: arcade._SpriteType)

Add a new sprite to the list.

Parameters

item (Sprite) – Sprite to add to the list.

array_of_images: Optional[List[Any]]

property center: Tuple[float, float]

Get the mean center coordinates of all sprites in the list.

disable_spatial_hashing()

Turn off spatial hashing.

draw(**kwargs)

Draw this list of sprites.

Parameters

• filter – Optional parameter to set OpenGL filter, such as gl.GL_NEAREST to avoid smoothing.

• blend_function – Optional parameter to set the OpenGL blend function used for drawing the sprite list, such as ‘arcade.Window.ctx.BLEND_ADDITIVE’ or ‘arcade.Window.ctx.BLEND_DEFAULT’

draw_hit_boxes(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]] = (0, 0, 0, 255), line_thickness: float = 1)

Draw all the hit boxes in this list

enable_spatial_hashing(spatial_hash_cell_size=128)

Turn on spatial hashing.

extend(items: Union[list, arcade.SpriteList])

Extends the current list with the given list

Parameters

items (list) – list of Sprites to add to the list

index(key)

Return the index of this sprite

insert(index: int, item: arcade._SpriteType)

Inserts a sprite at a given index

Parameters

• index (int) – The index at which to insert

• item (Sprite) – The sprite to insert

move(change_x: float, change_y: float)

Moves all Sprites in the list by the same amount.

Parameters

• change_x (float) – Amount to change all x values by

• change_y (float) – Amount to change all y values by

next_texture_id = 0

on_update(delta_time: float = 0.016666666666666666)

Update the sprite. Similar to update, but also takes a delta-time.

property percent_sprites_moved

What percent of the sprites moved?

pop(index: int = - 1) → arcade.Sprite

Pop off the last sprite, or the given index, from the list

preload_textures(texture_list: List)

Preload a set of textures that will be used for sprites in this sprite list.

Parameters

texture_list (array) – List of textures.

remove(item: arcade._SpriteType)

Remove a specific sprite from the list. :param Sprite item: Item to remove from the list

rescale(factor: float) → None

Rescale all sprites in the list relative to the spritelists center.

reverse()

Reverses the current list inplace

update()

Call the update() method on each sprite in the list.

update_angle(sprite: arcade.Sprite)

Called by the Sprite class to update the angle in this sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_animation(delta_time: float = 0.016666666666666666)

Call the update_animation in every sprite in the sprite list.

update_color(sprite: arcade.Sprite)

Called by the Sprite class to update position, angle, size and color of the specified sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_height(sprite: arcade.Sprite)

Called by the Sprite class to update the size/scale in this sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_location(sprite: arcade.Sprite)

Called by the Sprite class to update the location in this sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_position(sprite: arcade.Sprite)

Called by the Sprite class to update position, angle, size and color of the specified sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_size(sprite: arcade.Sprite)

Called by the Sprite class to update the size/scale in this sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

update_texture(sprite)

Make sure we update the texture for this sprite for the next batch drawing

update_width(sprite: arcade.Sprite)

Called by the Sprite class to update the size/scale in this sprite. Necessary for batch drawing of items.

Parameters

sprite (Sprite) – Sprite to update.

property use_spatial_hash

Are we using a spatial hash?

class arcade.SpriteSolidColor(width: int, height: int, color)

Bases: arcade.Sprite

This sprite is just a rectangular sprite of one solid color. No need to use an image file.

__init__(width: int, height: int, color)

Create a solid-color rectangular sprite.

Parameters

• width (int) – Width of the sprite

• height (int) – Height of the sprite

• color (Color) – Color of the sprite

class arcade.Text

Bases: object

Class used for managing text.

__init__()

class arcade.Texture(name: str, image: Optional[PIL.Image.Image] = None, hit_box_algorithm: str = 'Simple', hit_box_detail: float = 4.5)

Bases: object

Class that represents a texture. Usually created by the load_texture or load_textures commands.

Attributes:

name

Unique name of the texture. Used by load_textures for caching. If you are manually creating a texture, you can just set this to whatever.

image

A PIL.Image.Image object.

width

Width of the texture in pixels.

height

Height of the texture in pixels.

__init__(name: str, image: Optional[PIL.Image.Image] = None, hit_box_algorithm: str = 'Simple', hit_box_detail: float = 4.5)

Create a texture, given a PIL Image object.

Parameters

• name (str) – Name of texture. Used for caching, so must be unique for each texture.

• image (PIL.Image.Image) – Image to use as a texture.

• hit_box_algorithm (str) –

  One of ‘None’, ‘Simple’ or ‘Detailed’. Defaults to ‘Simple’. Use ‘Simple’ for the PhysicsEngineSimple, PhysicsEnginePlatformer and ‘Detailed’ for the PymunkPhysicsEngine.

  

  hit_box_algorithm = “None”

  

  hit_box_algorithm = “Simple”

  

  hit_box_algorithm = “Detailed”

• hit_box_detail (float) – Float, defaults to 4.5. Used with ‘Detailed’ to hit box

draw_scaled(center_x: float, center_y: float, scale: float = 1.0, angle: float = 0, alpha: int = 255)

Draw the texture.

Parameters

• center_x (float) – X location of where to draw the texture.

• center_y (float) – Y location of where to draw the texture.

• scale (float) – Scale to draw rectangle. Defaults to 1.

• angle (float) – Angle to rotate the texture by.

• alpha (int) – The transparency of the texture (0-255).

draw_sized(center_x: float, center_y: float, width: float, height: float, angle: float = 0, alpha: int = 255)

draw_transformed(left: float, bottom: float, width: float, height: float, angle: float = 0, alpha: int = 255, texture_transform: arcade.texture.Matrix3x3 = <arcade.texture.Matrix3x3 object>)

property height: int

Height of the texture in pixels.

property hit_box_points

property width: int

Width of the texture in pixels.

class arcade.View(window: Optional[arcade.Window] = None)

Bases: object

Support different views/screens in a window.

__init__(window: Optional[arcade.Window] = None)

on_draw()

Called when this view should draw

on_hide_view()

Called when this view is not shown anymore

on_key_press(symbol: int, modifiers: int)

Override this function to add key press functionality.

Parameters

• symbol (int) – Key that was hit

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_key_release(_symbol: int, _modifiers: int)

Override this function to add key release functionality.

Parameters

• _symbol (int) – Key that was hit

• _modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_drag(x: float, y: float, dx: float, dy: float, _buttons: int, _modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) – x position of mouse

• y (float) – y position of mouse

• dx (float) – Change in x since the last time this method was called

• dy (float) – Change in y since the last time this method was called

• _buttons (int) – Which button is pressed

• _modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_motion(x: float, y: float, dx: float, dy: float)

Override this function to add mouse functionality.

Parameters

• x (float) – x position of mouse

• y (float) – y position of mouse

• dx (float) – Change in x since the last time this method was called

• dy (float) – Change in y since the last time this method was called

on_mouse_press(x: float, y: float, button: int, modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) – x position of the mouse

• y (float) – y position of the mouse

• button (int) – What button was hit. One of: arcade.MOUSE_BUTTON_LEFT, arcade.MOUSE_BUTTON_RIGHT, arcade.MOUSE_BUTTON_MIDDLE

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_release(x: float, y: float, button: int, modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) –

• y (float) –

• button (int) –

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_scroll(x: int, y: int, scroll_x: int, scroll_y: int)

User moves the scroll wheel.

Parameters

• x (int) –

• y (int) –

• scroll_x (int) –

• scroll_y (int) –

on_show()

Called when this view is shown and if window dispatches a on_show event. (first time showing window or resize)

on_show_view()

Called when this view is shown

on_update(delta_time: float)

To be overridden

update(delta_time: float)

To be overridden

class arcade.Window(width: int = 800, height: int = 600, title: str = 'Arcade Window', fullscreen: bool = False, resizable: bool = False, update_rate: Optional[float] = 0.016666666666666666, antialiasing: bool = True, gl_version: Tuple[int, int] = (3, 3), screen: Optional[pyglet.canvas.base.Screen] = None, visible: bool = True, gc_mode: str = 'auto')

Bases: pyglet.window.BaseWindow

The Window class forms the basis of most advanced games that use Arcade. It represents a window on the screen, and manages events.

__init__(width: int = 800, height: int = 600, title: str = 'Arcade Window', fullscreen: bool = False, resizable: bool = False, update_rate: Optional[float] = 0.016666666666666666, antialiasing: bool = True, gl_version: Tuple[int, int] = (3, 3), screen: Optional[pyglet.canvas.base.Screen] = None, visible: bool = True, gc_mode: str = 'auto')

Construct a new window

Parameters

• width (int) – Window width

• height (int) – Window height

• title (str) – Title (appears in title bar)

• fullscreen (bool) – Should this be full screen?

• resizable (bool) – Can the user resize the window?

• update_rate (float) – How frequently to update the window.

• antialiasing (bool) – Should OpenGL’s anti-aliasing be enabled?

• gl_version (Tuple[int,int]) – What OpenGL version to request. This is (3, 3) by default and can be overridden when using more advanced OpenGL features.

• visible (bool) – Should the window be visible immediately

• gc_mode (bool) – Decides how opengl objects should be garbage collected

activate()

Activate this window.

property background_color

Get or set the background color for this window.

Type

Color

center_window()

Center the window on the screen.

clear()

Clears the window with the configured background color set through arcade.Window.background_color.

close()

Close the Window.

property ctx: arcade.context.ArcadeContext

The OpenGL context for this window.

Type

arcade.ArcadeContext

property current_view

This property returns the current view being shown. To set a different view, call the arcade.Window.show_view() method.

Return type

arcade.View

dispatch_events()

Dispatch events

flip()

Swap OpenGL and backing buffers for double-buffered windows.

get_location() → Tuple[int, int]

Return the X/Y coordinates of the window

Returns

x, y of window location

get_size() → Tuple[int, int]

Get the size of the window.

Returns

(width, height)

get_system_mouse_cursor(name)

Get the system mouse cursor

get_viewport() → Tuple[float, float, float, float]

Get the viewport. (What coordinates we can see.)

maximize()

Maximize the window.

minimize()

Minimize the window.

on_draw()

Override this function to add your custom drawing code.

on_key_press(symbol: int, modifiers: int)

Override this function to add key press functionality.

Parameters

• symbol (int) – Key that was hit

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_key_release(symbol: int, modifiers: int)

Override this function to add key release functionality.

Parameters

• symbol (int) – Key that was hit

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_drag(x: float, y: float, dx: float, dy: float, buttons: int, modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) – x position of mouse

• y (float) – y position of mouse

• dx (float) – Change in x since the last time this method was called

• dy (float) – Change in y since the last time this method was called

• buttons (int) – Which button is pressed

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_motion(x: float, y: float, dx: float, dy: float)

Override this function to add mouse functionality.

Parameters

• x (float) – x position of mouse

• y (float) – y position of mouse

• dx (float) – Change in x since the last time this method was called

• dy (float) – Change in y since the last time this method was called

on_mouse_press(x: float, y: float, button: int, modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) – x position of the mouse

• y (float) – y position of the mouse

• button (int) – What button was hit. One of: arcade.MOUSE_BUTTON_LEFT, arcade.MOUSE_BUTTON_RIGHT, arcade.MOUSE_BUTTON_MIDDLE

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_release(x: float, y: float, button: int, modifiers: int)

Override this function to add mouse button functionality.

Parameters

• x (float) –

• y (float) –

• button (int) –

• modifiers (int) – Bitwise ‘and’ of all modifiers (shift, ctrl, num lock) pressed during this event. See Modifiers.

on_mouse_scroll(x: int, y: int, scroll_x: int, scroll_y: int)

User moves the scroll wheel.

Parameters

• x (int) –

• y (int) –

• scroll_x (int) –

• scroll_y (int) –

on_resize(width: float, height: float)

Override this function to add custom code to be called any time the window is resized. The only responsibility here is to update the viewport.

Parameters

• width (float) – New width

• height (float) – New height

on_update(delta_time: float)

Move everything. Perform collision checks. Do all the game logic here.

Parameters

delta_time (float) – Time interval since the last time the function was called.

set_caption(caption)

Set the caption for the window.

set_exclusive_keyboard(exclusive=True)

Capture all keyboard input.

set_exclusive_mouse(exclusive=True)

Capture the mouse.

set_fullscreen(fullscreen=True, screen=None, mode=None, width=None, height=None)

Set if we are full screen or not.

Parameters

• fullscreen (bool) –

• screen – Which screen should we display on? See get_screens()

• mode –

• width (int) –

• height (int) –

set_location(x, y)

Set location of the window.

set_max_size(width: float, height: float)

Wrap the Pyglet window call to set maximum size

Parameters

• width (float) – width in pixels.

• height (float) – height in pixels.

Raises ValueError

set_maximum_size(width, height)

Set largest window size.

set_min_size(width: float, height: float)

Wrap the Pyglet window call to set minimum size

Parameters

• width (float) – width in pixels.

• height (float) – height in pixels.

set_minimum_size(width: int, height: int)

Set smallest window size.

set_mouse_platform_visible(platform_visible=None)

This does something.

set_mouse_visible(visible: bool = True)

If true, user can see the mouse cursor while it is over the window. Set false, the mouse is not visible. Default is true.

Parameters

visible (bool) –

set_size(width: float, height: float)

Ignore the resizable flag and set the size

Parameters

• width (float) –

• height (float) –

set_update_rate(rate: float)

Set how often the screen should be updated. For example, self.set_update_rate(1 / 60) will set the update rate to 60 fps

Parameters

rate (float) – Update frequency in seconds

set_viewport(left: float, right: float, bottom: float, top: float)

Set the viewport. (What coordinates we can see. Used to scale and/or scroll the screen).

See arcade.set_viewport() for more detailed information.

Parameters

• left (Number) –

• right (Number) –

• bottom (Number) –

• top (Number) –

set_visible(visible=True)

Set if the window is visible or not. Normally, a program’s window is visible.

Parameters

visible (bool) –

set_vsync(vsync: bool)

Set if we sync our draws to the monitors vertical sync rate.

show_view(new_view: arcade.View)

Select the view to show. Calling this function is the same as setting the arcade.Window.current_view() attribute.

Parameters

new_view (View) – View to show

switch_to()

Switch the this window.

test(frames: int = 10)

Used by unit test cases. Runs the event loop a few times and stops.

Parameters

frames (int) –

update(delta_time: float)

Move everything. For better consistency in naming, use on_update instead.

Parameters

delta_time (float) – Time interval since the last time the function was called in seconds.

use()

Bind the window’s framebuffer for rendering commands

arcade.are_polygons_intersecting(poly_a: Sequence[Union[Tuple[float, float], List[float]]], poly_b: Sequence[Union[Tuple[float, float], List[float]]]) → bool

Return True if two polygons intersect.

Parameters

• poly_a (PointList) – List of points that define the first polygon.

• poly_b (PointList) – List of points that define the second polygon.

Returns

True or false depending if polygons intersect

Rtype bool

arcade.astar_calculate_path(start_point: Union[Tuple[float, float], List[float]], end_point: Union[Tuple[float, float], List[float]], astar_barrier_list: arcade.paths.AStarBarrierList, diagonal_movement=True)

Parameters

• start_point (Point) –

• end_point (Point) –

• astar_barrier_list (AStarBarrierList) –

• diagonal_movement (bool) –

Returns: List

arcade.calculate_hit_box_points_detailed(image: <module 'PIL.Image' from 'c:\\users\\craven\\desktop\\webserver\\arcade\\venv\\lib\\site-packages\\PIL\\Image.py'>, hit_box_detail: float = 4.5)

Given an image, this returns points that make up a hit box around it. Attempts to trim out transparent pixels.

Parameters

• image (Image) – Image get hit box from.

• hit_box_detail (int) – How detailed to make the hit box. There’s a trade-off in number of points vs. accuracy.

Returns

List of points

arcade.calculate_hit_box_points_simple(image)

Given an image, this returns points that make up a hit box around it. Attempts to trim out transparent pixels.

Parameters

image (Image) –

Returns

List of points

arcade.check_for_collision(sprite1: arcade.Sprite, sprite2: arcade.Sprite) → bool

Check for a collision between two sprites.

Parameters

• sprite1 – First sprite

• sprite2 – Second sprite

Returns

True or False depending if the sprites intersect.

Return type

bool

arcade.check_for_collision_with_list(sprite: arcade.Sprite, sprite_list: arcade.SpriteList) → List[arcade.Sprite]

Check for a collision between a sprite, and a list of sprites.

Parameters

• sprite (Sprite) – Sprite to check

• sprite_list (SpriteList) – SpriteList to check against

Returns

List of sprites colliding, or an empty list.

Return type

list

arcade.clamp(a, low, high)

arcade.cleanup_texture_cache()

This cleans up the cache of textures. Useful when running unit tests so that the next test starts clean.

arcade.close_window()

Closes the current window, and then runs garbage collection. The garbage collection is necessary to prevent crashing when opening/closing windows rapidly (usually during unit tests).

arcade.create_ellipse(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0, num_segments: int = 32, filled=True) → arcade.Shape

This creates an ellipse vertex buffer object (VBO).

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.create_ellipse_filled(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0, num_segments: int = 128) → arcade.Shape

Create a filled ellipse. Or circle if you use the same width and height.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.create_ellipse_filled_with_colors(center_x: float, center_y: float, width: float, height: float, outside_color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], inside_color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0, num_segments: int = 32) → arcade.Shape

Draw an ellipse, and specify inside/outside color. Used for doing gradients.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

Parameters

• center_x (float) –

• center_y (float) –

• width (float) –

• height (float) –

• outside_color (Color) –

• inside_color (float) –

• tilt_angle (float) –

• num_segments (int) –

Returns Shape

arcade.create_ellipse_outline(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0, num_segments: int = 128) → arcade.Shape

Create an outline of an ellipse.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.create_isometric_grid_lines(width, height, tile_width, tile_height, color, line_width)

arcade.create_line(start_x: float, start_y: float, end_x: float, end_y: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1) → arcade.Shape

Create a line to be rendered later. This works faster than draw_line because the vertexes are only loaded to the graphics card once, rather than each frame.

Parameters

• start_x (float) –

• start_y (float) –

• end_x (float) –

• end_y (float) –

• color (Color) –

• line_width (float) –

Returns Shape

arcade.create_line_generic(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], shape_mode: int, line_width: float = 1) → arcade.Shape

This function is used by create_line_strip and create_line_loop, just changing the OpenGL type for the line drawing.

arcade.create_line_generic_with_colors(point_list: Sequence[Union[Tuple[float, float], List[float]]], color_list: Iterable[Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]], shape_mode: int, line_width: float = 1) → arcade.Shape

This function is used by create_line_strip and create_line_loop, just changing the OpenGL type for the line drawing.

Parameters

• point_list (PointList) –

• color_list (Iterable[Color]) –

• shape_mode (float) –

• line_width (float) –

Returns Shape

arcade.create_line_loop(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Create a multi-point line loop to be rendered later. This works faster than draw_line because the vertexes are only loaded to the graphics card once, rather than each frame.

Parameters

• point_list (PointList) –

• color (Color) –

• line_width (float) –

Returns Shape

arcade.create_line_strip(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Create a multi-point line to be rendered later. This works faster than draw_line because the vertexes are only loaded to the graphics card once, rather than each frame.

Internally, thick lines are created by two triangles.

Parameters

• point_list (PointList) –

• color (Color) –

• line_width (PointList) –

Returns Shape

arcade.create_lines(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Create a multi-point line loop to be rendered later. This works faster than draw_line because the vertexes are only loaded to the graphics card once, rather than each frame.

Parameters

• point_list (PointList) –

• color (Color) –

• line_width (float) –

Returns Shape

arcade.create_lines_with_colors(point_list: Sequence[Union[Tuple[float, float], List[float]]], color_list: Sequence[Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]], line_width: float = 1)

arcade.create_orthogonal_projection(left, right, bottom, top, near, far, dtype=None)

Creates an orthogonal projection matrix. Used internally with the OpenGL shaders.

Parameters

• left (float) – The left of the near plane relative to the plane’s center.

• right (float) – The right of the near plane relative to the plane’s center.

• top (float) – The top of the near plane relative to the plane’s center.

• bottom (float) – The bottom of the near plane relative to the plane’s center.

• near (float) – The distance of the near plane from the camera’s origin. It is recommended that the near plane is set to 1.0 or above to avoid rendering issues at close range.

• far (float) – The distance of the far plane from the camera’s origin.

• dtype –

Returns

A projection matrix representing the specified orthogonal perspective.

Return type

numpy.array

See also

http://msdn.microsoft.com/en-us/library/dd373965(v=vs.85).aspx

arcade.create_polygon(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Draw a convex polygon. This will NOT draw a concave polygon. Because of this, you might not want to use this function.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

Parameters

• point_list (PointList) –

• color –

Returns Shape

arcade.create_rectangle(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0, filled=True) → arcade.Shape

This function creates a rectangle using a vertex buffer object.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

Parameters

• center_x (float) –

• center_y (float) –

• width (float) –

• height (float) –

• color (Color) –

• border_width (float) –

• tilt_angle (float) –

• filled (bool) –

arcade.create_rectangle_filled(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0) → arcade.Shape

Create a filled rectangle.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

Parameters

• center_x (float) –

• center_y (float) –

• width (float) –

• height (float) –

• color (Color) –

• tilt_angle (float) –

Returns Shape

arcade.create_rectangle_filled_with_colors(point_list, color_list) → arcade.Shape

This function creates one rectangle/quad using a vertex buffer object.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.create_rectangle_outline(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0) → arcade.Shape

Create a rectangle outline.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

Args:

center_x: center_y: width: height: color: border_width: tilt_angle:

Returns:

arcade.create_rectangles_filled_with_colors(point_list, color_list) → arcade.Shape

This function creates multiple rectangle/quads using a vertex buffer object.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.create_text(text: str, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 0, align='left', font_name=('Calibri', 'Arial'), bold: bool = False, italic: bool = False, anchor_x: str = 'left', anchor_y: str = 'baseline', rotation=0)

Deprecated. Two step text drawing for backwards compatibility.

arcade.create_triangles_filled_with_colors(point_list, color_list) → arcade.Shape

This function creates multiple rectangle/quads using a vertex buffer object.

The function returns a Shape object that can be drawn with my_shape.draw(). Don’t create the shape in the draw method, create it in the setup method and then draw it in on_draw.

For even faster performance, add multiple shapes into a ShapeElementList and draw that list. This allows nearly unlimited shapes to be drawn just as fast as one.

arcade.draw_arc_filled(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], start_angle: float, end_angle: float, tilt_angle: float = 0, num_segments: int = 128)

Draw a filled in arc. Useful for drawing pie-wedges, or Pac-Man.

Parameters

• center_x (float) – x position that is the center of the arc.

• center_y (float) – y position that is the center of the arc.

• width (float) – width of the arc.

• height (float) – height of the arc.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• start_angle (float) – start angle of the arc in degrees.

• end_angle (float) – end angle of the arc in degrees.

• tilt_angle (float) – angle the arc is tilted.

• num_segments (float) – Number of line segments used to draw arc.

arcade.draw_arc_outline(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], start_angle: float, end_angle: float, border_width: float = 1, tilt_angle: float = 0, num_segments: int = 128)

Draw the outside edge of an arc. Useful for drawing curved lines.

Parameters

• center_x (float) – x position that is the center of the arc.

• center_y (float) – y position that is the center of the arc.

• width (float) – width of the arc.

• height (float) – height of the arc.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• start_angle (float) – start angle of the arc in degrees.

• end_angle (float) – end angle of the arc in degrees.

• border_width (float) – width of line in pixels.

• tilt_angle (float) – angle the arc is tilted.

• num_segments (int) – float of triangle segments that make up this circle. Higher is better quality, but slower render time.

arcade.draw_circle_filled(center_x: float, center_y: float, radius: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], num_segments: int = - 1)

Draw a filled-in circle.

Parameters

• center_x (float) – x position that is the center of the circle.

• center_y (float) – y position that is the center of the circle.

• radius (float) – width of the circle.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• num_segments (int) – Number of triangle segments that make up this circle. Higher is better quality, but slower render time. The default value of -1 means arcade will try to calulate a reasonable amount of segments based on the size of the circle.

arcade.draw_circle_outline(center_x: float, center_y: float, radius: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, num_segments: int = - 1)

Draw the outline of a circle.

Parameters

• center_x (float) – x position that is the center of the circle.

• center_y (float) – y position that is the center of the circle.

• radius (float) – width of the circle.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• border_width (float) – Width of the circle outline in pixels.

• num_segments (int) – Number of triangle segments that make up this circle. Higher is better quality, but slower render time. The default value of -1 means arcade will try to calulate a reasonable amount of segments based on the size of the circle.

arcade.draw_ellipse_filled(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0, num_segments: int = - 1)

Draw a filled in ellipse.

Parameters

• center_x (float) – x position that is the center of the circle.

• center_y (float) – y position that is the center of the circle.

• width (float) – width of the ellipse.

• height (float) – height of the ellipse.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• tilt_angle (float) – Angle in degrees to tilt the ellipse.

• num_segments (int) – Number of triangle segments that make up this circle. Higher is better quality, but slower render time. The default value of -1 means arcade will try to calulate a reasonable amount of segments based on the size of the circle.

arcade.draw_ellipse_outline(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0, num_segments: int = - 1)

Draw the outline of an ellipse.

Parameters

• center_x (float) – x position that is the center of the circle.

• center_y (float) – y position that is the center of the circle.

• width (float) – width of the ellipse.

• height (float) – height of the ellipse.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• border_width (float) – Width of the circle outline in pixels.

• tilt_angle (float) – Angle in degrees to tilt the ellipse.

• num_segments (int) – Number of triangle segments that make up this circle. Higher is better quality, but slower render time. The default value of -1 means arcade will try to calculate a reasonable amount of segments based on the size of the circle.

arcade.draw_line(start_x: float, start_y: float, end_x: float, end_y: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Draw a line.

Parameters

• start_x (float) – x position of line starting point.

• start_y (float) – y position of line starting point.

• end_x (float) – x position of line ending point.

• end_y (float) – y position of line ending point.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• line_width (float) – Width of the line in pixels.

arcade.draw_line_strip(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Draw a multi-point line.

Parameters

• point_list (PointList) – List of x, y points that make up this strip

• color (Color) – Color of line strip

• line_width (float) – Width of the line

arcade.draw_lines(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Draw a set of lines.

Draw a line between each pair of points specified.

Parameters

• point_list (PointList) – List of points making up the lines. Each point is in a list. So it is a list of lists.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• line_width (float) – Width of the line in pixels.

arcade.draw_lrtb_rectangle_filled(left: float, right: float, top: float, bottom: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Draw a rectangle by specifying left, right, top, and bottom edges.

Parameters

• left (float) – The x coordinate of the left edge of the rectangle.

• right (float) – The x coordinate of the right edge of the rectangle.

• top (float) – The y coordinate of the top of the rectangle.

• bottom (float) – The y coordinate of the rectangle bottom.

• color (Color) – The color of the rectangle.

Raises AttributeError

Raised if left > right or top < bottom.

arcade.draw_lrtb_rectangle_outline(left: float, right: float, top: float, bottom: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1)

Draw a rectangle by specifying left, right, top, and bottom edges.

Parameters

• left (float) – The x coordinate of the left edge of the rectangle.

• right (float) – The x coordinate of the right edge of the rectangle.

• top (float) – The y coordinate of the top of the rectangle.

• bottom (float) – The y coordinate of the rectangle bottom.

• color (Color) – The color of the rectangle.

• border_width (float) – The width of the border in pixels. Defaults to one.

Raises AttributeError

Raised if left > right or top < bottom.

arcade.draw_lrwh_rectangle_textured(bottom_left_x: float, bottom_left_y: float, width: float, height: float, texture: arcade.texture.Texture, angle: float = 0, alpha: int = 255)

Draw a texture extending from bottom left to top right.

Parameters

• bottom_left_x (float) – The x coordinate of the left edge of the rectangle.

• bottom_left_y (float) – The y coordinate of the bottom of the rectangle.

• width (float) – The width of the rectangle.

• height (float) – The height of the rectangle.

• texture (int) – identifier of texture returned from load_texture() call

• angle (float) – rotation of the rectangle. Defaults to zero.

• alpha (int) – Transparency of image. 0 is fully transparent, 255 (default) is visible

arcade.draw_parabola_filled(start_x: float, start_y: float, end_x: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0)

Draws a filled in parabola.

Parameters

• start_x (float) – The starting x position of the parabola

• start_y (float) – The starting y position of the parabola

• end_x (float) – The ending x position of the parabola

• height (float) – The height of the parabola

• color (Color) – The color of the parabola

• tilt_angle (float) – The angle of the tilt of the parabola

arcade.draw_parabola_outline(start_x: float, start_y: float, end_x: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0)

Draws the outline of a parabola.

Parameters

• start_x (float) – The starting x position of the parabola

• start_y (float) – The starting y position of the parabola

• end_x (float) – The ending x position of the parabola

• height (float) – The height of the parabola

• color (Color) – The color of the parabola

• border_width (float) – The width of the parabola

• tilt_angle (float) – The angle of the tilt of the parabola

arcade.draw_point(x: float, y: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], size: float)

Draw a point.

Parameters

• x (float) – x position of point.

• y (float) – y position of point.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• size (float) – Size of the point in pixels.

arcade.draw_points(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], size: float = 1)

Draw a set of points.

Parameters

• point_list (PointList) – List of points Each point is in a list. So it is a list of lists.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• size (float) – Size of the point in pixels.

arcade.draw_polygon_filled(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Draw a polygon that is filled in.

Parameters

• point_list (PointList) – List of points making up the lines. Each point is in a list. So it is a list of lists.

• color (Color) – The color, specified in RGB or RGBA format.

arcade.draw_polygon_outline(point_list: Sequence[Union[Tuple[float, float], List[float]]], color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], line_width: float = 1)

Draw a polygon outline. Also known as a “line loop.”

Parameters

• point_list (PointList) – List of points making up the lines. Each point is in a list. So it is a list of lists.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• line_width (int) – Width of the line in pixels.

arcade.draw_rectangle_filled(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], tilt_angle: float = 0)

Draw a filled-in rectangle.

Parameters

• center_x (float) – x coordinate of rectangle center.

• center_y (float) – y coordinate of rectangle center.

• width (float) – width of the rectangle.

• height (float) – height of the rectangle.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• tilt_angle (float) – rotation of the rectangle. Defaults to zero.

arcade.draw_rectangle_outline(center_x: float, center_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1, tilt_angle: float = 0)

Draw a rectangle outline.

Parameters

• center_x (float) – x coordinate of top left rectangle point.

• center_y (float) – y coordinate of top left rectangle point.

• width (float) – width of the rectangle.

• height (float) – height of the rectangle.

• color (Color) – color, specified in a list of 3 or 4 bytes in RGB or RGBA format.

• border_width (float) – width of the lines, in pixels.

• tilt_angle (float) – rotation of the rectangle. Defaults to zero.

arcade.draw_scaled_texture_rectangle(center_x: float, center_y: float, texture: arcade.texture.Texture, scale: float = 1.0, angle: float = 0, alpha: int = 255)

Draw a textured rectangle on-screen.

Parameters

• center_x (float) – x coordinate of rectangle center.

• center_y (float) – y coordinate of rectangle center.

• texture (int) – identifier of texture returned from load_texture() call

• scale (float) – scale of texture

• angle (float) – rotation of the rectangle. Defaults to zero.

• alpha (float) – Transparency of image. 0 is fully transparent, 255 (default) is visible

arcade.draw_text(text: str, start_x: float, start_y: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 0, align: str = 'left', font_name: Union[str, Tuple[str, ...]] = ('calibri', 'arial'), bold: bool = False, italic: bool = False, anchor_x: str = 'left', anchor_y: str = 'baseline', rotation: float = 0) → arcade.Sprite

Draws text to the screen.

Internally this works by creating an image, and using the Pillow library to draw the text to it. Then use that image to create a sprite. We cache the sprite (so we don’t have to recreate over and over, which is slow) and use it to draw text to the screen.

This implementation does not support bold/italic like the older Pyglet-based implementation of draw_text. However if you specify the ‘italic’ or ‘bold’ version of the font via the font name, you will get that font. Just the booleans do not work.

Parameters

• text (str) – Text to draw

• start_x (float) – x coordinate of the lower-left point to start drawing text

• start_y (float) – y coordinate of the lower-left point to start drawing text

• color (Color) – Color of the text

• font_size (float) – Size of the text

• width (float) – Width of the text-box for the text to go into. Used with alignment.

• align (str) – Align left, right, center

• Tuple[str, ...]] font_name (Union[str,) – Font name, or list of font names in order of preference

• bold (bool) – Bold the font (currently unsupported)

• italic (bool) – Italicize the font (currently unsupported)

• anchor_x (str) – Anchor the font location, defaults to ‘left’

• anchor_y (str) – Anchor the font location, defaults to ‘baseline’

• rotation (float) – Rotate the text

arcade.draw_text_2(text: str, start_x: float, start_y: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 0, align: str = 'left', font_name: Union[str, Tuple[str, ...]] = ('calibri', 'arial'), bold: bool = False, italic: bool = False, anchor_x: str = 'left', anchor_y: str = 'baseline', rotation: float = 0)

Draws text to the screen using pyglet’s label instead. Doesn’t work.

Parameters

• text (str) – Text to draw

• start_x (float) –

• start_y (float) –

• color (Color) – Color of the text

• font_size (float) – Size of the text

• width (float) –

• align (str) –

• Tuple[str, ...]] font_name (Union[str,) –

• bold (bool) –

• italic (bool) –

• anchor_x (str) –

• anchor_y (str) –

• rotation (float) –

arcade.draw_texture_rectangle(center_x: float, center_y: float, width: float, height: float, texture: arcade.texture.Texture, angle: float = 0, alpha: int = 255)

Draw a textured rectangle on-screen.

Parameters

• center_x (float) – x coordinate of rectangle center.

• center_y (float) – y coordinate of rectangle center.

• width (float) – width of texture

• height (float) – height of texture

• texture (int) – identifier of texture returned from load_texture() call

• angle (float) – rotation of the rectangle. Defaults to zero.

• alpha (float) – Transparency of image. 0 is fully transparent, 255 (default) is visible

arcade.draw_triangle_filled(x1: float, y1: float, x2: float, y2: float, x3: float, y3: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Draw a filled in triangle.

Parameters

• x1 (float) – x value of first coordinate.

• y1 (float) – y value of first coordinate.

• x2 (float) – x value of second coordinate.

• y2 (float) – y value of second coordinate.

• x3 (float) – x value of third coordinate.

• y3 (float) – y value of third coordinate.

• color (Color) – Color of triangle.

arcade.draw_triangle_outline(x1: float, y1: float, x2: float, y2: float, x3: float, y3: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1)

Draw a the outline of a triangle.

Parameters

• x1 (float) – x value of first coordinate.

• y1 (float) – y value of first coordinate.

• x2 (float) – x value of second coordinate.

• y2 (float) – y value of second coordinate.

• x3 (float) – x value of third coordinate.

• y3 (float) – y value of third coordinate.

• color (Color) – Color of triangle.

• border_width (float) – Width of the border in pixels. Defaults to 1.

arcade.draw_xywh_rectangle_filled(bottom_left_x: float, bottom_left_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Draw a filled rectangle extending from bottom left to top right

Parameters

• bottom_left_x (float) – The x coordinate of the left edge of the rectangle.

• bottom_left_y (float) – The y coordinate of the bottom of the rectangle.

• width (float) – The width of the rectangle.

• height (float) – The height of the rectangle.

• color (Color) – The color of the rectangle.

arcade.draw_xywh_rectangle_outline(bottom_left_x: float, bottom_left_y: float, width: float, height: float, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], border_width: float = 1)

Draw a rectangle extending from bottom left to top right

Parameters

• bottom_left_x (float) – The x coordinate of the left edge of the rectangle.

• bottom_left_y (float) – The y coordinate of the bottom of the rectangle.

• width (float) – The width of the rectangle.

• height (float) – The height of the rectangle.

• color (Color) – The color of the rectangle.

• border_width (float) – The width of the border in pixels. Defaults to one.

arcade.earclip(polygon)

Simple earclipping algorithm for a given polygon p. polygon is expected to be an array of 2-tuples of the cartesian points of the polygon For a polygon with n points it will return n-2 triangles. The triangles are returned as an array of 3-tuples where each item in the tuple is a 2-tuple of the cartesian point.

Implementation Reference:

• https://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf

arcade.finish_render()

Swap buffers and displays what has been drawn. If programs use derive from the Window class, this function is automatically called.

arcade.get_closest_sprite(sprite: arcade.Sprite, sprite_list: arcade.SpriteList) → Optional[Tuple[arcade.Sprite, float]]

Given a Sprite and SpriteList, returns the closest sprite, and its distance.

Parameters

• sprite (Sprite) – Target sprite

• sprite_list (SpriteList) – List to search for closest sprite.

Returns

Closest sprite.

Return type

Sprite

arcade.get_display_size(screen_id: int = 0) → Tuple[int, int]

Return the width and height of a monitor.

The size of the primary monitor is returned by default.

Parameters

screen_id (int) – The screen number

Returns

Tuple containing the width and height of the screen

Return type

tuple

arcade.get_distance(x1: float, y1: float, x2: float, y2: float)

Get the distance between two points.

arcade.get_distance_between_sprites(sprite1: arcade.Sprite, sprite2: arcade.Sprite) → float

Returns the distance between the center of two given sprites :param Sprite sprite1: Sprite one :param Sprite sprite2: Sprite two :return: Distance :rtype: float

arcade.get_four_byte_color(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]) → Union[Tuple[int, int, int, int], List[int]]

Given a RGB list, it will return RGBA. Given a RGBA list, it will return the same RGBA.

Parameters

color (Color) – Three or four byte tuple

Returns

return: Four byte RGBA tuple

arcade.get_four_float_color(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]) → Tuple[float, float, float, float]

Given a 3 or 4 RGB/RGBA color where each color goes 0-255, this returns a RGBA tuple where each item is a scaled float from 0 to 1.

Parameters

color (Color) – Three or four byte tuple

Returns

Four floats as a RGBA tuple

arcade.get_game_controllers()

Get a list of all the game controllers

Returns

List of game controllers

arcade.get_image(x: int = 0, y: int = 0, width: Optional[int] = None, height: Optional[int] = None) → PIL.Image.Image

Get an image from the screen.

Parameters

• x (int) – Start (left) x location

• y (int) – Start (top) y location

• width (int) – Width of image. Leave blank for grabbing the ‘rest’ of the image

• height (int) – Height of image. Leave blank for grabbing the ‘rest’ of the image

Returns

A Pillow Image

Return type

PIL.Image.Image

You can save the image like:

image = get_image()
image.save('screenshot.png', 'PNG')

arcade.get_joysticks()

Get a list of all the game controllers

This is an alias of get_game_controllers, which is better worded.

Returns

List of game controllers

arcade.get_pixel(x: int, y: int) → Tuple[int, int, int]

Given an x, y, will return RGB color value of that point.

Parameters

• x (int) – x location

• y (int) – y location

Return type

Color

arcade.get_points_for_thick_line(start_x: float, start_y: float, end_x: float, end_y: float, line_width: float)

Function used internally for Arcade. OpenGL draws triangles only, so a think line must be two triangles that make up a rectangle. This calculates those points.

arcade.get_projection()

Returns the current projection matrix used by sprites and shapes in arcade.

This is a shortcut for `window.ctx.projection_2d_matrix.

Returns

Numpy array with projection.

arcade.get_rectangle_points(center_x: float, center_y: float, width: float, height: float, tilt_angle: float = 0) → Sequence[Union[Tuple[float, float], List[float]]]

Utility function that will return all four coordinate points of a rectangle given the x, y center, width, height, and rotation.

Args:

center_x: center_y: width: height: tilt_angle:

Returns:

arcade.get_scaling_factor(window=None) → float

Gets the scaling factor of the given Window. This is the ratio between the window and framebuffer size. If no window is supplied the currently active window will be used.

Parameters

window (Window) – Handle to window we want to get scaling factor of.

Returns

Scaling factor. E.g., 2 would indicate scaled up twice.

Return type

float

arcade.get_screens()

Return a list of screens. So for a two-monitor setup, this should return a list of two screens. Can be used with arcade.Window to select which window we full-screen on.

Returns

List of screens, one for each monitor.

Return type

List

arcade.get_sprites_at_exact_point(point: Union[Tuple[float, float], List[float]], sprite_list: arcade.SpriteList) → List[arcade.Sprite]

Get a list of sprites at a particular point

Parameters

• point (Point) – Point to check

• sprite_list (SpriteList) – SpriteList to check against

Returns

List of sprites colliding, or an empty list.

Return type

list

arcade.get_sprites_at_point(point: Union[Tuple[float, float], List[float]], sprite_list: arcade.SpriteList) → List[arcade.Sprite]

Get a list of sprites at a particular point

Parameters

• point (Point) – Point to check

• sprite_list (SpriteList) – SpriteList to check against

Returns

List of sprites colliding, or an empty list.

Return type

list

arcade.get_text_image(text: str, text_color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], font_size: float = 12, width: int = 0, align: str = 'left', valign: str = 'top', font_name: Union[str, Tuple[str, ...]] = ('calibri', 'arial'), background_color: Optional[Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]] = None, height: int = 0)

arcade.get_tilemap_layer(map_object: pytiled_parser.objects.TileMap, layer_path: str) → Optional[pytiled_parser.objects.Layer]

Given a TileMap and a layer path, this returns the TileLayer.

Parameters

• map_object (pytiled_parser.objects.TileMap) – The map read in by the read_tmx function.

• layer_path (str) – A string to match the layer name. Case sensitive.

Returns

A TileLayer, or None if no layer was found.

arcade.get_viewport() → Tuple[float, float, float, float]

Get the current viewport settings.

Returns

Tuple of floats, with (left, right, bottom, top)

arcade.get_window() → pyglet.window.BaseWindow

Return a handle to the current window.

Returns

Handle to the current window.

arcade.has_line_of_sight(point_1: Union[Tuple[float, float], List[float]], point_2: Union[Tuple[float, float], List[float]], walls: arcade.SpriteList, max_distance: int = - 1)

Determine if we have line of sight between two points. Having a line of sight means, that you can connect both points with straight line without intersecting any obstacle. Thanks to the shapely efficiency and speedups boost, this method is very fast. It can easily test 10 000 lines_of_sight.

Parameters

• point_1 – tuple – coordinates of first position (x, y)

• point_2 – tuple – coordinates of second position (x, y)

• walls – list – Obstacle objects to check against

• max_distance – int –

Returns

tuple – (bool, list)

arcade.is_point_in_polygon(x, y, polygon_point_list)

Use ray-tracing to see if point is inside a polygon

Args:

x: y: polygon_point_list:

Returns: bool

arcade.isometric_grid_to_screen(tile_x, tile_y, width, height, tile_width, tile_height)

arcade.lerp(v1: float, v2: float, u: float) → float

linearly interpolate between two values

arcade.lerp_vec(v1: Union[Tuple[float, float], List[float]], v2: Union[Tuple[float, float], List[float]], u: float) → Union[Tuple[float, float], List[float]]

arcade.load_sound(path: Union[str, pathlib.Path], streaming: bool = False) → Optional[arcade.Sound]

Load a sound.

Parameters

• path (Path) – Name of the sound file to load.

• streaming (bool) – Boolean for determining if we stream the sound or load it all into memory. Set to True for long sounds to save memory, False for short sounds to speed playback.

Returns

Sound object which can be used by the play_sound() function.

Return type

Sound

arcade.load_spritesheet(file_name: Union[str, pathlib.Path], sprite_width: int, sprite_height: int, columns: int, count: int, margin: int = 0) → List[arcade.texture.Texture]

Parameters

• file_name (str) – Name of the file to that holds the texture.

• sprite_width (int) – Width of the sprites in pixels

• sprite_height (int) – Height of the sprites in pixels

• columns (int) – Number of tiles wide the image is.

• count (int) – Number of tiles in the image.

• margin (int) – Margin between images

Returns List

List of Texture objects.

arcade.load_texture(file_name: Union[str, pathlib.Path], x: float = 0, y: float = 0, width: float = 0, height: float = 0, flipped_horizontally: bool = False, flipped_vertically: bool = False, flipped_diagonally: bool = False, can_cache: bool = True, mirrored=None, hit_box_algorithm='Simple', hit_box_detail: float = 4.5) → arcade.texture.Texture

Load an image from disk and create a texture.

Note: If the code is to load only part of the image, the given x, y coordinates will start with the origin (0, 0) in the upper left of the image. When drawing, Arcade uses (0, 0) in the lower left corner. Be careful with this reversal.

For a longer explanation of why computers sometimes start in the upper left, see: http://programarcadegames.com/index.php?chapter=introduction_to_graphics&lang=en#section_5

Parameters

• file_name (str) – Name of the file to that holds the texture.

• x (float) – X position of the crop area of the texture.

• y (float) – Y position of the crop area of the texture.

• width (float) – Width of the crop area of the texture.

• height (float) – Height of the crop area of the texture.

• flipped_horizontally (bool) – Mirror the sprite image. Flip left/right across vertical axis.

• flipped_vertically (bool) – Flip the image up/down across the horizontal axis.

• flipped_diagonally (bool) – Transpose the image, flip it across the diagonal.

• can_cache (bool) – If a texture has already been loaded, load_texture will return the same texture in order to save time. Sometimes this is not desirable, as resizing a cached texture will cause all other textures to resize with it. Setting can_cache to false will prevent this issue at the experience of additional resources.

• mirrored (bool) – Deprecated.

• hit_box_algorithm (str) –

  One of ‘None’, ‘Simple’ or ‘Detailed’. Defaults to ‘Simple’. Use ‘Simple’ for the PhysicsEngineSimple, PhysicsEnginePlatformer and ‘Detailed’ for the PymunkPhysicsEngine.

  

  hit_box_algorithm = “None”

  

  hit_box_algorithm = “Simple”

  

  hit_box_algorithm = “Detailed”

• hit_box_detail (float) – Float, defaults to 4.5. Used with ‘Detailed’ to hit box

Returns

New Texture object.

Raises

ValueError

arcade.load_texture_pair(filename, hit_box_algorithm: str = 'Simple')

Load a texture pair, with the second being a mirror image of the first. Useful when doing animations and the character can face left/right.

arcade.load_textures(file_name: Union[str, pathlib.Path], image_location_list: Union[Tuple[Union[Tuple[float, float, float, float], List[float]], ...], List[Union[Tuple[float, float, float, float], List[float]]]], mirrored: bool = False, flipped: bool = False) → List[arcade.texture.Texture]

Load a set of textures from a single image file.

Note: If the code is to load only part of the image, the given x, y coordinates will start with the origin (0, 0) in the upper left of the image. When drawing, Arcade uses (0, 0) in the lower left corner. Be careful with this reversal.

For a longer explanation of why computers sometimes start in the upper left, see: http://programarcadegames.com/index.php?chapter=introduction_to_graphics&lang=en#section_5

Parameters

• file_name (str) – Name of the file.

• image_location_list (List) – List of image sub-locations. Each rectangle should be a List of four floats: [x, y, width, height].

• mirrored (bool) – If set to True, the image is mirrored left to right.

• flipped (bool) – If set to True, the image is flipped upside down.

Returns

List of Texture’s.

Raises

ValueError

arcade.make_burst_emitter(center_xy: Union[Tuple[float, float], List[float]], filenames_and_textures: Sequence[Union[str, arcade.texture.Texture]], particle_count: int, particle_speed: float, particle_lifetime_min: float, particle_lifetime_max: float, particle_scale: float = 1.0, fade_particles: bool = True)

Returns an emitter that emits all of its particles at once

arcade.make_circle_texture(diameter: int, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]]) → arcade.texture.Texture

Return a Texture of a circle with the given diameter and color.

Parameters

• diameter (int) – Diameter of the circle and dimensions of the square Texture returned.

• color (Color) – Color of the circle.

Returns

New Texture object.

arcade.make_interval_emitter(center_xy: Union[Tuple[float, float], List[float]], filenames_and_textures: Sequence[Union[str, arcade.texture.Texture]], emit_interval: float, emit_duration: float, particle_speed: float, particle_lifetime_min: float, particle_lifetime_max: float, particle_scale: float = 1.0, fade_particles: bool = True)

Returns an emitter that emits its particles at a constant rate for a given amount of time

arcade.make_soft_circle_texture(diameter: int, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], center_alpha: int = 255, outer_alpha: int = 0) → arcade.texture.Texture

Return a Texture of a circle with the given diameter and color, fading out at its edges.

Parameters

• diameter (int) – Diameter of the circle and dimensions of the square Texture returned.

• color (Color) – Color of the circle.

• center_alpha (int) – Alpha value of the circle at its center.

• outer_alpha (int) – Alpha value of the circle at its edges.

Returns

New Texture object.

Return type

arcade.Texture

arcade.make_soft_square_texture(size: int, color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], center_alpha: int = 255, outer_alpha: int = 0) → arcade.texture.Texture

Return a Texture of a square with the given diameter and color, fading out at its edges.

Parameters

• size (int) – Diameter of the square and dimensions of the square Texture returned.

• color (Color) – Color of the square.

• center_alpha (int) – Alpha value of the square at its center.

• outer_alpha (int) – Alpha value of the square at its edges.

Returns

New Texture object.

arcade.make_transparent_color(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]], transparency: float)

Given a RGB color, along with an alpha, returns a RGBA color tuple.

Parameters

• color (Color) – Three or four byte RGBA color

• transparency (float) – Transparency

arcade.open_window(width: int, height: int, window_title: str, resizable: bool = False, antialiasing: bool = True) → arcade.Window

This function opens a window. For ease-of-use we assume there will only be one window, and the programmer does not need to keep a handle to the window. This isn’t the best architecture, because the window handle is stored in a global, but it makes things easier for programmers if they don’t have to track a window pointer.

Parameters

• width (Number) – Width of the window.

• height (Number) – Height of the window.

• window_title (str) – Title of the window.

• resizable (bool) – Whether the window can be user-resizable.

• antialiasing (bool) – Smooth the graphics?

Returns

Handle to window

Rtype arcade.Window

arcade.pause(seconds: numbers.Number)

Pause for the specified number of seconds. This is a convenience function that just calls time.sleep()

Parameters

seconds (float) – Time interval to pause in seconds.

arcade.play_sound(sound: arcade.Sound, volume: float = 1.0, pan: float = 0.0, looping: bool = False) → pyglet.media.player.Player

Play a sound.

Parameters

• sound (Sound) – Sound loaded by load_sound(). Do NOT use a string here for the filename.

• volume (float) – Volume, from 0=quiet to 1=loud

• pan (float) – Pan, from -1=left to 0=centered to 1=right

arcade.process_layer(map_object: pytiled_parser.objects.TileMap, layer_name: str, scaling: float = 1, base_directory: str = '', use_spatial_hash: Optional[bool] = None, hit_box_algorithm='Simple', hit_box_detail: float = 4.5) → arcade.SpriteList

This takes a map layer returned by the read_tmx function, and creates Sprites for it.

Parameters

• map_object – The TileMap read in by read_tmx.

• layer_name – The name of the layer that we are creating sprites for.

• scaling – Scaling the layer up or down. (Note, any number besides 1 can create a tearing effect, if numbers don’t evenly divide.)

• base_directory – Base directory of the file, that we start from to load images.

• use_spatial_hash – If all, or at least 75%, of the loaded tiles will not move between frames and you are using either the simple physics engine or platformer physics engine, set this to True to speed collision calculation. Leave False if using PyMunk, if all sprites are moving, or if no collision will be checked.

• hit_box_algorithm (str) –

  One of ‘None’, ‘Simple’ or ‘Detailed’. Defaults to ‘Simple’. Use ‘Simple’ for the PhysicsEngineSimple, PhysicsEnginePlatformer and ‘Detailed’ for the PymunkPhysicsEngine.

  

  hit_box_algorithm = “None”

  

  hit_box_algorithm = “Simple”

  

  hit_box_algorithm = “Detailed”

• hit_box_detail (float) – Float, defaults to 4.5. Used with ‘Detailed’ to hit box

Returns

A SpriteList.

arcade.quick_run(time_to_pause: numbers.Number)

Only run the application for the specified time in seconds. Useful for unit testing or continuous integration (CI) testing where there is no user interaction.

Parameters

time_to_pause (Number) – Number of seconds to pause before automatically closing.

arcade.rand_angle_360_deg()

arcade.rand_angle_spread_deg(angle: float, half_angle_spread: float) → float

arcade.rand_in_circle(center: Union[Tuple[float, float], List[float]], radius: float)

Generate a point in a circle, or can think of it as a vector pointing a random direction with a random magnitude <= radius Reference: http://stackoverflow.com/a/30564123 Note: This algorithm returns a higher concentration of points around the center of the circle

arcade.rand_in_rect(bottom_left: Union[Tuple[float, float], List[float]], width: float, height: float) → Union[Tuple[float, float], List[float]]

arcade.rand_on_circle(center: Union[Tuple[float, float], List[float]], radius: float) → Union[Tuple[float, float], List[float]]

Note: by passing a random value in for float, you can achieve what rand_in_circle() does

arcade.rand_on_line(pos1: Union[Tuple[float, float], List[float]], pos2: Union[Tuple[float, float], List[float]]) → Union[Tuple[float, float], List[float]]

arcade.rand_vec_magnitude(angle: float, lo_magnitude: float, hi_magnitude: float) → Union[Tuple[float, float], List[float]]

arcade.rand_vec_spread_deg(angle: float, half_angle_spread: float, length: float) → Union[Tuple[float, float], List[float]]

arcade.read_tmx(tmx_file: Union[str, pathlib.Path]) → pytiled_parser.objects.TileMap

Given a .tmx, this will read in a tiled map, and return a TiledMap object.

Given a tsx_file, the map will use it as the tileset. If tsx_file is not specified, it will use the tileset specified within the tmx_file.

Important: Tiles must be a “collection” of images.

Hitboxes can be drawn around tiles in the tileset editor, but only polygons are supported. (This is a great area for PR’s to improve things.)

Parameters

tmx_file (str) – String with name of our TMX file

Returns

Map

Return type

TiledMap

arcade.render_text(text: arcade.CreateText, start_x: float, start_y: float)

Deprecated. Two step text drawing for backwards compatibility.

arcade.rotate_point(x: float, y: float, cx: float, cy: float, angle_degrees: float) → List[float]

Rotate a point around a center.

Parameters

• x – x value of the point you want to rotate

• y – y value of the point you want to rotate

• cx – x value of the center point you want to rotate around

• cy – y value of the center point you want to rotate around

• angle_degrees – Angle, in degrees, to rotate

Returns

Return rotated (x, y) pair

Return type

(float, float)

arcade.run()

Run the main loop. After the window has been set up, and the event hooks are in place, this is usually one of the last commands on the main program.

arcade.schedule(function_pointer: Callable, interval: numbers.Number)

Schedule a function to be automatically called every interval seconds. The function/callable needs to take a delta time argument similar to on_update. This is a float representing the number of seconds since the method was scheduled or called.

A function can be scheduled multiple times, but this is not recommended.

Warning

Scheduled functions should always be unscheduled using arcade.unschedule(). Having lingering scheduled functions will lead to crashes.

Example:

def some_action(delta_time):
    print(delta_time)

# Call the function every second
arcade.schedule(some_action, 1)
# Unschedule

Parameters

• function_pointer (Callable) – Pointer to the function to be called.

• interval (Number) – Interval to call the function (float or integer)

arcade.screen_to_isometric_grid(screen_x, screen_y, width, height, tile_width, tile_height)

arcade.set_background_color(color: Union[Tuple[int, int, int], List[int], Tuple[int, int, int, int]])

Specifies the background color of the window. This value will persist for every future screen clears until changed.

Parameters

color (Color) – List of 3 or 4 bytes in RGB/RGBA format.

arcade.set_viewport(left: float, right: float, bottom: float, top: float)

This sets what coordinates the window will cover.

By default, the lower left coordinate will be (0, 0) and the top y coordinate will be the height of the window in pixels, and the right x coordinate will be the width of the window in pixels.

If a program is making a game where the user scrolls around a larger world, this command can help out.

Note: It is recommended to only set the viewport to integer values that line up with the pixels on the screen. Otherwise if making a tiled game the blocks may not line up well, creating rectangle artifacts.

Note: Window.on_resize will call set_viewport by default. If you set your own custom viewport, you may need to over-ride this method.

For more advanced users: This functions sets the orthogonal projection used by shapes and sprites. It also updates the viewport to match the current screen resolution. window.ctx.projection_2d (projection_2d()) and window.ctx.viewport (viewport()) can be used to set viewport and projection separately.

Parameters

• left (Number) – Left-most (smallest) x value.

• right (Number) – Right-most (largest) x value.

• bottom (Number) – Bottom (smallest) y value.

• top (Number) – Top (largest) y value.

arcade.set_window(window: pyglet.window.BaseWindow)

Set a handle to the current window.

Parameters

window (Window) – Handle to the current window.

arcade.start_render()

Get set up to render. Required to be called before drawing anything to the screen.

arcade.stop_sound(player: pyglet.media.player.Player)

Stop a sound that is currently playing.

Parameters

player (pyglet.media.Player) – Player returned from play_sound().

arcade.trim_image(image: PIL.Image.Image) → PIL.Image.Image

Crops the extra whitespace out of an image.

Returns

New PIL.Image.Image object.

arcade.unschedule(function_pointer: Callable)

Unschedule a function being automatically called.

Example:

def some_action(delta_time):
    print(delta_time)

arcade.schedule(some_action, 1)
arcade.unschedule(some_action)

Parameters

function_pointer (Callable) – Pointer to the function to be unscheduled.