新增entitylist用于管理实体

2020-06-08 20:11:58 +08:00
parent 57efc5b0e6
commit a048a8ac29
15 changed files with 936 additions and 38 deletions
--- a/source/src/ECS/Utils/EntityList.ts
+++ b/source/src/ECS/Utils/EntityList.ts
@@ -0,0 +1,92 @@
+class EntityList{
+    public scene: Scene;
+    private _entitiesToRemove: Entity[] = [];
+    private _entitiesToAdded: Entity[] = [];
+    private _tempEntityList: Entity[] = [];
+    private _entities: Entity[] = [];
+
+    constructor(scene: Scene){
+        this.scene = scene;
+    }
+
+    public get count(){
+        return this._entities.length;
+    }
+
+    public get buffer(){
+        return this._entities;
+    }
+
+    public add(entity: Entity){
+        this._entitiesToAdded.push(entity);
+    }
+
+    public remove(entity: Entity){
+        if (this._entitiesToAdded.contains(entity)){
+            this._entitiesToAdded.remove(entity);
+            return;
+        }
+
+        if (!this._entitiesToRemove.contains(entity))
+            this._entitiesToRemove.push(entity);
+    }
+
+    public findEntity(name: string){
+        for (let i = 0; i < this._entities.length; i ++){
+            if (this._entities[i].name == name)
+                return this._entities[i];
+        }
+
+        return this._entitiesToAdded.firstOrDefault(entity => entity.name == name);
+    }
+
+    public update(){
+        for (let i = 0; i < this._entities.length; i++){
+            let entity = this._entities[i];
+            if (entity.enabled)
+                entity.update();
+        }
+    }
+
+    public removeAllEntities(){
+        this._entitiesToAdded.length = 0;
+
+        this.updateLists();
+
+        for (let i = 0; i < this._entities.length; i ++){
+            this._entities[i].scene = null;
+        }
+
+        this._entities.length = 0;
+    }
+
+    public updateLists(){
+        if (this._entitiesToRemove.length > 0){
+            let temp = this._entitiesToRemove;
+            this._entitiesToRemove = this._tempEntityList;
+            this._tempEntityList = temp;
+            this._tempEntityList.forEach(entity => {
+                this._entities.remove(entity);
+                entity.scene = null;
+
+                this.scene.entityProcessors.forEach(processor => processor.remove(entity));
+            });
+
+            this._tempEntityList.length = 0;
+        }
+
+        if (this._entitiesToAdded.length > 0){
+            let temp = this._entitiesToAdded;
+            this._entitiesToAdded = this._tempEntityList;
+            this._tempEntityList = temp;
+            this._tempEntityList.forEach(entity => {
+                this._entities.push(entity);
+                entity.scene = this.scene;
+
+                this.scene.entityProcessors.forEach(processor => processor.onChanged(entity));
+            });
+
+            this._tempEntityList.length = 0;
+        }
+    }
+}