entity = entity_manager.create_entity()

entity_manager.kill_entity(entity)

class Position(pygame_ecs.BaseComponent): def __init__(self, x: int, y: int): super().__init__() self.x = x self.y = y

class BallPhysics(pygame_ecs.BaseSystem): def __init__(self, screen) -> None: super().__init__(required_component_types=[Position, Velocity]) self.dt = 0 self.screen = screen def update_entity(self, entity, entity_components): pos: Position = entity_components[Position] vel: Velocity = entity_components[Velocity] pos.x += vel.vec.x * self.dt pos.y += vel.vec.y * self.dt if pos.x > WIDTH or pos.x < 0: vel.vec.x *= -1 if pos.y > HEIGHT or pos.y < 0: vel.vec.y *= -1

import pygame import pygame_ecs import random class Position(pygame_ecs.BaseComponent): def __init__(self, x: int, y: int): super().__init__() self.x = x self.y = y class BallRenderer(pygame_ecs.BaseComponent): def __init__(self, radius: int, color) -> None: super().__init__() self.radius = radius self.color = color class BallDrawSystem(pygame_ecs.BaseSystem): def __init__(self, screen) -> None: super().__init__(required_component_types=[Position, BallRenderer]) self.screen = screen def update_entity(self, entity, entity_components): pos: Position = entity_components[Position] ball_renderer: BallRenderer = entity_components[BallRenderer] pygame.draw.circle( self.screen, ball_renderer.color, (pos.x, pos.y), ball_renderer.radius ) screen = pygame.display.set_mode((800, 600)) clock = pygame.time.Clock() component_manager = pygame_ecs.ComponentManager() entity_manager = pygame_ecs.EntityManager(component_manager) system_manager = pygame_ecs.SystemManager(entity_manager, component_manager) ball_draw_system = BallDrawSystem(screen) system_manager.add_system(ball_draw_system) component_manager.init_components() for _ in range(200): center = ( random.randint(0, screen.get_width()), random.randint(0, screen.get_height()), ) radius = random.randint(4, 18) color = [random.randint(0, 255) for _ in range(3)] vel = pygame.math.Vector2( (random.random() - 0.5) * 400 / 1000, (random.random() - 0.5) * 400 / 1000, ) entity = entity_manager.create_entity() component_manager.add_component(entity, Position(center[0], center[1])) component_manager.add_component(entity, BallRenderer(radius, color)) while True: for event in pygame.event.get(): if event.type == pygame.QUIT: raise SystemExit system_manager.update_entities() pygame.display.update() clock.tick(60) pygame.display.set_caption(f"FPS: {clock.get_fps()}")