Système d'entités et de composants #1
22
ecs.py
22
ecs.py
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@ -6,6 +6,8 @@ class World:
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self._to_apply: set[Entity] = set()
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self._entities: set[Entity] = set()
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self._mapping: dict[type, set[Entity]] = {}
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self._to_apply_resources: list[tuple[type, object]] = []
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self._resources: dict[type, object] = {}
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def create_entity(self, *components):
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return Entity(self, *components)
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@ -14,6 +16,15 @@ class World:
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entity._deleted = True
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self._to_apply.add(entity)
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def set(self, *resources):
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for resource in resources:
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self._to_apply_resources.append((type(resource), resource))
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def remove(self, *resource_types):
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for resource_type in resource_types:
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if resource_type in self._resources:
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self._to_apply_resources.append((resource_type, None))
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def apply(self):
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for entity in self._to_apply:
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if entity._deleted:
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@ -30,6 +41,11 @@ class World:
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entity._components[component_type] = component
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self._mapping.setdefault(component_type, set()).add(entity)
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entity._to_apply.clear()
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self._to_apply.clear()
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for resource_type, resource in self._to_apply_resources:
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if resource is None: del self._resources[resource_type]
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else: self._resources[resource_type] = resource
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self._to_apply_resources.clear()
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def query(self, *needed: type, without: tuple[type] = []) -> Iterator['Entity']:
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if not needed:
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@ -42,6 +58,12 @@ class World:
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all(without_type not in entity for without_type in without):
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yield entity
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def __getitem__(self, resource_type: type) -> object:
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return self._resources[resource_type]
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def __contains__(self, resource_type: type) -> bool:
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return resource_type in self._resources
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class Entity:
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def __init__(self, world: World, *components):
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self._world = world
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30
main.py
30
main.py
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@ -50,3 +50,33 @@ for entity in world.query():
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print(entity[Age], end=" ")
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print()
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# Création d'une ressource pouvant être ajoutée a un monde
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class Gravity(float): pass
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# On peut aussi ajouter des ressources globales
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world.set(Gravity(9.81))
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print("On vérifie que la ressource Gravity existe")
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print(Gravity in world)
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# On applique les moddifications
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world.apply()
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print("On vérifie que la ressource Gravity existe après l'application")
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print(Gravity in world)
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print("Récupération de la ressource Gravity")
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print(world[Gravity])
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# On supprime la ressource Gravity
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world.remove(Gravity)
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print("On vérifie que la ressource Gravity n'existe plus")
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print(Gravity in world)
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# On applique les moddifications
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world.apply()
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print("On vérifie que la ressource Gravity n'existe plus")
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print(Gravity in world)
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