init commit with base ECS and Network System

1 files changed, 60 insertions, 0 deletions

diff --git a/kennel/engine/entities/entity.py b/kennel/engine/entities/entity.py
new file mode 100644
index 0000000..0ca8666
--- /dev/null
+++ b/kennel/engine/entities/entity.py
@@ -0,0 +1,60 @@
+from enum import Enum
+from kennel.engine.components.component import Component, ComponentType
+from typing import List, Optional
+
+
+class EntityType(str, Enum):
+    LASER = "LASER"
+
+
+class Entity:
+    def __init__(
+        self, entity_type: EntityType, id: str, component_list: List[Component]
+    ):
+        self.entity_type = entity_type
+        self.id = id
+        self.components = {}
+        for component in component_list:
+            self.add_component(component)
+
+    def get_component(self, component_type: ComponentType) -> Optional[Component]:
+        return self.components[component_type]
+
+    def add_component(self, component: Component) -> None:
+        self.components[component.component_type] = component
+
+
+class EntityManager:
+    def __init__(self):
+        self.entities = {}
+        self.component_entities = {}
+
+    def update(self) -> None:
+        self.component_entities = {}
+        for entity in self.entities.values():
+            for component in entity.components.values():
+                if component.component_type not in self.component_entities:
+                    self.component_entities[component.component_type] = set()
+                self.component_entities[component.component_type].add(entity)
+
+    def get_entities_with_component(
+        self, component_type: ComponentType
+    ) -> List[Entity]:
+        return self.component_entities.get(component_type, [])
+
+    def add_entity(self, entity: Entity) -> None:
+        self.entities[entity.id] = entity
+        for component in entity.components.values():
+            if component.component_type not in self.component_entities:
+                self.component_entities[component.component_type] = set()
+            self.component_entities[component.component_type].add(entity)
+
+    def remove_entity(self, entity_id: str) -> None:
+        if entity_id in self.entities:
+            entity = self.entities[entity_id]
+            for component in entity.components.values():
+                if component.component_type in self.component_entities:
+                    self.component_entities[component.component_type].remove(entity)
+
+    def get_entity(self, entity_id: str) -> Optional[Entity]:
+        return self.entities.get(entity_id)