获取实体的所有组件

class Component:
    def __init__(self, name):
        self.name = name

class Entity:
    def __init__(self):
        self.components = []

    def add_component(self, component):
        self.components.append(component)

    def get_components(self):
        return self.components

# 创建组件
render_component = Component("RenderComponent")
physics_component = Component("PhysicsComponent")
behavior_component = Component("BehaviorComponent")

# 创建实体并添加组件
entity = Entity()
entity.add_component(render_component)
entity.add_component(physics_component)
entity.add_component(behavior_component)

# 获取实体的所有组件
components = entity.get_components()
for component in components:
    print(component.name)

RenderComponent
PhysicsComponent
BehaviorComponent

if entity is not None:
    components = entity.get_components()
    if components:
        for component in components:
            print(component.name)
    else:
        print("No components found.")
else:
    print("Entity is null.")