bullseye2d library

Classes

Accelerometer Input
Provides access to the device's accelerometer data, including the force of gravity.
App App
The base App class. Extend from this class to create a Bullseye2D application.
AppConfig App
The configuration settings for the application.
Audio Audio
Manages audio playback for sounds and music.
AudioVisualizer Audio
Handles the setup and data retrieval for audio visualization using the Web Audio API.
BitmapFont Graphics
A font rendered from a pre-generated texture atlas.
Char Input
Represents a single character input event, including the character symbol and the physical key code that produced it.
Gamepad Input
Manages input from connected gamepads.
Graphics Graphics
Provides the core 2D rendering capabilities for the Bullseye2D engine.
Image Graphics
A drawable image, typically a sub-region of a Texture.
Keyboard Input
Manages keyboard input, tracking key states (down, up, hit) and buffering character input.
Loader IO
Manages and tracks the progress of multiple asynchronous loading operations.
LoaderItem IO
An individual item being tracked by the Loader.
Mouse Input
Manages mouse and touch input.
Platform
Provides utility methods for detecting the current platform.
Point<T extends num>
A utility class for representing two-dimensional positions.
Rect<T extends num> Utility
Represents a rectangle defined by a top-left corner left, top and a width and height.
RenderBatchState
ResourceManager IO
Manages the loading of game resources such as textures, images, fonts, and sounds.
Sound Audio
Manages an audio resource, its loading state, and playback properties.
Texture Graphics
Represents a Texture. Textures are reference-counted; use retain and dispose to manage their lifecycle.
TextureFlags Graphics
Defines bitmask flags to control Texture behavior, such as filtering,

Enums

BlendMode Graphics
Defines how source and destination colors are blended together when rendering.
ChannelState Audio
The playback state of an AudioChannel or music.
GamepadButton Input
Represents the standard buttons and directional inputs found on a typical gamepad.
Joystick Input
Identifies the left or right analog stick on a gamepad.
KeyCodes Input
Represents physical key codes
LoadingState Audio
The loading status of a Sound resource.
MouseButton Input
Represents the buttons on a mouse.
Trigger Input
Identifies the left or right analog trigger on a gamepad.

Extensions

BitmaskExtension on int Utility
Provides extension methods for bitmask operations on integers.
ColorExtension on Color Graphics
Provides utility methods for Color (Vector4) objects.
ImageListExtension on Images Graphics
Provides extension methods for lists of Image objects (Images).
SumListExtension on List<num> Utility
Extension on List<num> to provide utility methods for calculations.

Constants

fragmentShaderSource → const String
pi → const double
The PI constant.
vertexShaderSource → const String

Properties

accel → Accelerometer Core Systems
{@category Core_Systems} Provides access to the device's accelerometer data.
no setter
audio → Audio Core Systems
{@category Core_Systems} Manages audio playback for sounds and music.
no setter
dartDoc ↔ bool? Features Cheatsheet Getting Started My first App
This is just a unused variable to enforce the dart doc generator to include topics that aren't attached to a specific classes or functions. {@category Getting_Started} {@category TutorialFirstApp} {@category Features} {@category Cheatsheet}
getter/setter pair
die → dynamic Debug
{@category Debug} Behaves the same as error, but stops the application / launches the debugger
final
error → dynamic Debug
{@category Debug} Behaves the same as log, but uses error verbosity
final
f ↔ String
getter/setter pair
gamepad → Gamepad Core Systems
{@category Core_Systems} Handles gamepad input from connected controllers.
no setter
gfx → Graphics Core Systems
{@category Core_Systems} The main graphics interface for rendering 2D primitives, textures, and text.
no setter
info → dynamic Debug
{@category Debug} Behaves the same as log, but uses info verbosity
final
keyboard → Keyboard Core Systems
{@category Core_Systems} Manages keyboard input.
no setter
loader → Loader Core Systems
{@category Core_Systems} Manages the loading of game assets.
no setter
log → dynamic Debug
{@category Debug} Accepts a variable number of arguments for logging.
final
mouse → Mouse Core Systems
{@category Core_Systems} Manages mouse and touch input.
no setter
resources → ResourceManager Core Systems
{@category Core_Systems} Manages loading and caching of game resources like textures, fonts, and sounds.
no setter
warn → dynamic Debug
{@category Debug} Behaves the same as log, but uses warn verbosity
final

Functions

atan2Degree(num a, num b) → double Utility
Calculates the angle in degrees for the point (b, a) using atan2(a, b).
colorFromInt(int vol) → Color
cos(num radians) → double
Converts radians to a double and returns the cosine of the value.
cosDegree(num degree) → double Utility
Calculates the cosine of an angle given in degrees.
debugger({bool when = true, String? message}) → bool
If when is true, stop the program as if a breakpoint were hit at the following statement.
encodeImageToDataURL(Images images, [int frame = 0]) → Future<String?> IO
Encodes a specific frame from an Images list into a base64 Data URL string (PNG format).
load<T>(String path, Loader loadingInfo, {String responseType = "text", T? defaultValue, void onError(Event event)?, dynamic onLoad(JSAny response, dynamic completer(T), void onError(Event event))?}) → Future<T> IO
Asynchronously loads a file from the specified path and returns its content as type T.
loadImageData(String path, Loader loadingInfo) → Future<HTMLImageElement?> IO
Asynchronously loads image data from the specified path into an HTMLImageElement.
loadStringAsync(String url, Loader loadingInfo) → Future<String> IO
Asynchronously loads a string from the specified url.
logEnableStacktrace(bool enable) → dynamic Debug
Prepend source location to all messages
logFilter([String? filter]) → dynamic Debug
Configures log output filtering.
logOff() → dynamic Debug
Disables all logging output
logOn() → dynamic Debug
Enables all logging output
logReset() → dynamic Debug
Clears the tag stack
min<T extends num>(T a, T b) → T
Returns the lesser of two numbers.
nextPowerOfTwo(int v) → int Utility
Calculates the next power of two greater than or equal to the given integer v.
sin(num radians) → double
Converts radians to a double and returns the sine of the value.
sinDegree(num degree) → double Utility
Calculates the sine of an angle given in degrees.
sqrt(num x) → double
Converts x to a double and returns the positive square root of the value.
stopEvent(Event event) → void Utility
Stops the propagation and prevents the default action of a browser Event.
tanDegree(num degree) → double Utility
Calculates the tangent of an angle given in degrees.

Typedefs

Color = Vector4 Graphics
Represents a color.
ColorList = List<Color> Graphics
A list of Color objects.
GL = WebGLRenderingContext
GL2 = WebGL2RenderingContext
Images = List<Image> Graphics
A type alias for a list of Image objects. Represents a collection of images, often used for animations or sprite sheets.