Specialized Features

class Emitter:
    """
    Particle emitter for creating visual effects.
    """
    def __init__(self, center_xy: tuple[float, float], 
                 emit_controller: arcade.EmitController,
                 particle_factory: callable):
        """Create particle emitter."""
    
    center_xy: tuple[float, float]
    
    def update(self) -> None:
        """Update particles and emission."""
    
    def draw(self) -> None:
        """Draw all particles."""

class Particle:
    """Base particle class."""
    def __init__(self):
        """Create particle."""
    
    position: tuple[float, float]
    velocity: tuple[float, float]
    lifetime: float
    
    def update(self) -> bool:
        """Update particle. Returns True if still alive."""

class EmitController:
    """Controls when and how particles are emitted."""
    def can_emit(self) -> bool:
        """Check if emission should occur."""

def make_burst_emitter(center_xy: tuple[float, float], particle_factory: callable, 
                      particle_count: int) -> arcade.Emitter:
    """Create burst emitter."""

def make_interval_emitter(center_xy: tuple[float, float], particle_factory: callable,
                         interval: float, particle_count: int) -> arcade.Emitter:
    """Create interval-based emitter."""

class AStarBarrierList:
    """
    Barrier list for A* pathfinding algorithm.
    """
    def __init__(self, moving_sprite: arcade.Sprite, blocking_sprites: arcade.SpriteList, 
                 grid_size: int, left: int, right: int, bottom: int, top: int):
        """Create A* barrier list."""

def astar_calculate_path(start_point: tuple[int, int], end_point: tuple[int, int], 
                        barriers: arcade.AStarBarrierList, 
                        diagonal_movement: bool = True) -> list[tuple[int, int]]:
    """
    Calculate path using A* algorithm.
    
    Args:
        start_point: Starting grid position
        end_point: Target grid position
        barriers: Barrier list with obstacles
        diagonal_movement: Allow diagonal movement
    
    Returns:
        List of grid positions forming the path
    """

def has_line_of_sight(point1: tuple[float, float], point2: tuple[float, float], 
                     barriers: arcade.AStarBarrierList) -> bool:
    """
    Check line of sight between two points.
    
    Args:
        point1: First point
        point2: Second point
        barriers: Obstacles to check against
    
    Returns:
        True if clear line of sight exists
    """

class PerfGraph:
    """
    Visual performance graph for monitoring frame rates and timing.
    """
    def __init__(self, width: int, height: int, graph_data: str, 
                 sample_count: int = 60):
        """Create performance graph."""
    
    def update(self, value: float) -> None:
        """Add new performance sample."""
    
    def draw(self) -> None:
        """Draw performance graph."""

def enable_timings() -> None:
    """Enable performance timing collection."""

def disable_timings() -> None:
    """Disable performance timing collection."""

def get_fps() -> float:
    """Get current frames per second."""

def print_timings() -> None:
    """Print collected timing information."""

def get_timings() -> dict:
    """Get timing data programmatically."""

def clear_timings() -> None:
    """Clear collected timing data."""

class TileMap:
    """
    Manages tile-based maps for 2D games.
    """
    def __init__(self):
        """Create tilemap."""
    
    # Map properties
    width: int
    height: int
    tile_width: int
    tile_height: int
    
    # Sprite lists for different layers
    sprite_lists: dict[str, arcade.SpriteList]
    
    def get_cartesian(self, x: int, y: int) -> tuple[float, float]:
        """Convert tile coordinates to world coordinates."""
    
    def get_tilemap_layer(self, layer_name: str) -> arcade.SpriteList:
        """Get sprite list for specific layer."""

def load_tilemap(map_path: str, scaling: float = 1.0, 
                layer_options: dict = None) -> arcade.TileMap:
    """
    Load tilemap from TMX file.
    
    Args:
        map_path: Path to TMX tilemap file
        scaling: Scale factor for tiles
        layer_options: Options for specific layers
    
    Returns:
        Loaded TileMap object
    """

class Scene:
    """
    Container for managing multiple sprite lists as named layers.
    """
    def __init__(self, sprite_lists: dict[str, arcade.SpriteList] = None):
        """Create scene with optional initial sprite lists."""
    
    def add_sprite_list(self, name: str, sprite_list: arcade.SpriteList = None) -> None:
        """Add sprite list layer to scene."""
    
    def get_sprite_list(self, name: str) -> arcade.SpriteList:
        """Get sprite list by layer name."""
    
    def remove_sprite_list(self, name: str) -> None:
        """Remove sprite list layer."""
    
    def update(self, names: list[str] = None) -> None:
        """Update specified layers or all layers."""
    
    def draw(self, names: list[str] = None, **kwargs) -> None:
        """Draw specified layers or all layers."""

class SceneKeyError(Exception):
    """Exception for scene layer access errors."""
    pass

# Shader effects
class Shadertoy:
    """
    Shadertoy-compatible shader system for visual effects.
    """
    def __init__(self, size: tuple[int, int], main_source: str):
        """Create Shadertoy shader."""
    
    def render(self, time: float = 0, mouse_position: tuple[float, float] = (0, 0)) -> None:
        """Render shader effect."""

class CRTFilter:
    """CRT monitor visual effect filter."""
    def __init__(self, width: int, height: int):
        """Create CRT filter."""
    
    def use(self) -> None:
        """Apply CRT effect to subsequent rendering."""
    
    def render(self) -> None:
        """Render CRT effect."""

class BloomFilter:
    """Bloom lighting effect filter."""
    def __init__(self, width: int, height: int, threshold: float = 0.7):
        """Create bloom filter."""
    
    threshold: float
    
    def use(self) -> None:
        """Apply bloom effect."""
    
    def render(self) -> None:
        """Render bloom effect."""

class HitBox:
    """Base hit box class for collision detection."""
    def __init__(self, points: list[tuple[float, float]]):
        """Create hit box from points."""
    
    points: list[tuple[float, float]]
    
    def create_rotated(self, angle: float) -> 'HitBox':
        """Create rotated version of hit box."""

class RotatableHitBox(HitBox):
    """Hit box that supports rotation."""
    def __init__(self, points: list[tuple[float, float]]):
        """Create rotatable hit box."""
    
    def rotate(self, angle: float) -> None:
        """Rotate hit box by angle."""

# Hit box algorithms
class SimpleHitBoxAlgorithm:
    """Simple rectangular hit box algorithm."""
    def calculate(self, texture: arcade.Texture) -> list[tuple[float, float]]:
        """Calculate simple hit box points."""

class PymunkHitBoxAlgorithm:
    """Detailed hit box using Pymunk for complex shapes."""
    def calculate(self, texture: arcade.Texture, detail: float = 4.5) -> list[tuple[float, float]]:
        """Calculate detailed hit box points."""

# Algorithm instances
algo_simple: SimpleHitBoxAlgorithm
algo_detailed: PymunkHitBoxAlgorithm
algo_default: SimpleHitBoxAlgorithm  # Default algorithm

import arcade

class ParticleDemo(arcade.Window):
    def __init__(self):
        super().__init__(800, 600, "Particle Effects")
        self.emitter_list = []
    
    def setup(self):
        # Create explosion effect
        def make_particle():
            particle = arcade.FadeParticle(
                filename_or_texture=":resources:images/space_shooter/meteorGrey_med1.png",
                change_xy=(arcade.rand_vec_magnitude(0, 2, 5)),
                scale=0.1,
                lifetime=2.0
            )
            return particle
        
        # Burst emitter for explosion
        explosion = arcade.make_burst_emitter(
            center_xy=(400, 300),
            particle_factory=make_particle,
            particle_count=50
        )
        self.emitter_list.append(explosion)
    
    def on_draw(self):
        self.clear()
        for emitter in self.emitter_list:
            emitter.draw()
    
    def on_update(self, delta_time):
        for emitter in self.emitter_list:
            emitter.update()

def main():
    game = ParticleDemo()
    game.setup()
    arcade.run()

if __name__ == "__main__":
    main()