58 lines
2.1 KiB
Python
58 lines
2.1 KiB
Python
from typing import Iterator
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class World:
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def __init__(self):
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self.entities: set[Entity] = set()
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self.mapping: dict[type, set[Entity]] = {}
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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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for entity in self.entities:
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for without_type in without:
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if without_type in entity:
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break
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else:
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yield entity
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else:
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first_component = needed[0]
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for entity in self.mapping.get(first_component, set()):
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for component_type in needed[1:]:
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if entity not in self.mapping.get(component_type, set()):
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break
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else:
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for without_type in without:
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if without_type in entity:
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break
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else:
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yield entity
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class Entity:
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def __init__(self, world: World):
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self.world = world
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self.world.entities.add(self)
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self.components: dict[type, object] = {}
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def __getitem__(self, component_type):
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return self.components[component_type]
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def __setitem__(self, component_type, component):
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self.components[component_type] = component
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self.world.mapping.setdefault(component_type, set()).add(self)
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def __delitem__(self, component_type):
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del self.components[component_type]
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self.world.mapping[component_type].remove(self)
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if len(self.world.mapping[component_type]) == 0:
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del self.world.mapping[component_type]
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def __contains__(self, component_type):
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return component_type in self.components
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def __del__(self): # TODO: Réparer ça marche pas car il n'est pas détruit car il est toujours dans World
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self.world.entities.remove(self)
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for component_type in self.components:
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self.world.mapping[component_type].remove(self)
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if len(self.world.mapping[component_type]) == 0:
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del self.world.mapping[component_type]
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