Système d'entités et de composants #1
5
.vscode/settings.json
vendored
Normal file
5
.vscode/settings.json
vendored
Normal file
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@ -0,0 +1,5 @@
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{
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"[python]": {
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"editor.defaultFormatter": "ms-python.black-formatter"
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}
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}
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44
ecs.py
44
ecs.py
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@ -15,7 +15,7 @@ class World:
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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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"""
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Crée une entité avec les composants donnés en paramètres.
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@ -28,7 +28,7 @@ class World:
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"""
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return Entity(self, *components)
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def remove_entity(self, entity: 'Entity'):
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def remove_entity(self, entity: "Entity"):
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"""
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Supprime une entité du monde.
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@ -37,7 +37,7 @@ class World:
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"""
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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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"""
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Définit les ressources données en paramètres.
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@ -48,7 +48,7 @@ class World:
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"""
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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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"""
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Supprime les ressources données en paramètres.
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@ -81,14 +81,16 @@ class World:
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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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if resource is None:
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del self._resources[resource_type]
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else:
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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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def query(self, *needed: type, without: tuple[type] = []) -> Iterator["Entity"]:
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"""
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Renvoie les entités qui ont les composants de *needed et sans les composants de *without.
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Paramètres:
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*needed: Le type de composants que les entités doivent avoir.
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*without: Les type de composants que les entités ne doivent pas avoir.
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@ -103,10 +105,12 @@ class World:
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yield entity
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else:
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for entity in self._mapping.get(needed[0], set()):
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if all(entity in self._mapping.get(component_type, set()) for component_type in needed[1:]) and \
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all(without_type not in entity for without_type in without):
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if all(
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entity in self._mapping.get(component_type, set())
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for component_type in needed[1:]
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) and 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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"""
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Renvoie la ressource de type *resource_type.
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@ -118,7 +122,7 @@ class World:
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La ressource de type *resource_type.
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"""
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return self._resources[resource_type]
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def __contains__(self, resource_type: type) -> bool:
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"""
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Renvoie si la ressource de type *resource_type existe.
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@ -131,10 +135,12 @@ class World:
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"""
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return resource_type in self._resources
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class Entity:
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"""
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Une entité du monde.
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"""
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def __init__(self, world: World, *components):
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"""
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Créer une entité avec les composants en paramètres et l'ajoute au monde.
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@ -144,11 +150,13 @@ class Entity:
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*components: Les composants de l'entité.
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"""
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self._world = world
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self._to_apply: list[tuple[type, object]] = [(type(component), component) for component in components]
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self._to_apply: list[tuple[type, object]] = [
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(type(component), component) for component in components
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]
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self._components: dict[type, object] = {}
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self._deleted = False
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self._world._to_apply.add(self)
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def set(self, *components):
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"""
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Définit les composants de l'entité donnés en paramètres.
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@ -159,7 +167,7 @@ class Entity:
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for component in components:
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self._to_apply.append((type(component), component))
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self._world._to_apply.add(self)
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def remove(self, *component_types: type):
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"""
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Supprime les composants de l'entité donnés en paramètres.
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@ -171,7 +179,7 @@ class Entity:
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if component_type in self._components:
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self._to_apply.append((component_type, None))
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self._world._to_apply.add(self)
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def __getitem__(self, component_type: type) -> object:
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"""
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Renvoie le composant de type *component_type.
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@ -194,4 +202,4 @@ class Entity:
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Retourne:
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Si le composant de type *component_type existe.
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"""
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return component_type in self._components
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return component_type in self._components
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16
main.py
16
main.py
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@ -1,8 +1,14 @@
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from ecs import World
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# Création de composants pouvant être ajouté a des entitées
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class Name(str): pass
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class Age(int): pass
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class Name(str):
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pass
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class Age(int):
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pass
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# Création d'un monde
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world = World()
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@ -50,8 +56,11 @@ 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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class Gravity(float):
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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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@ -79,4 +88,3 @@ 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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29
tasks.py
Normal file
29
tasks.py
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@ -0,0 +1,29 @@
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from typing import Callable
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from ecs import World
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class TaskManager:
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"""
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Contient des fonctions de logique s'appliquant sur un monde.
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"""
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def __init__(self):
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"""
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Créer un gestionnaire de taches vide.
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"""
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self.tasks: dict[int, list[Callable[[World], None]]] = {}
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def add(self, priority: int, task: Callable[[World], None]):
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"""
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Ajoute une tache à un gestionnaire de taches.
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"""
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self.tasks.setdefault(priority, []).append(task)
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def run(self, world: World):
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"""
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Exécute toutes les taches.
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"""
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priorities = sorted(list(self.tasks.keys()))
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for priority in priorities:
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for task in self.tasks[priority]:
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task(world)
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