整理ecs框架

2020-07-22 20:07:14 +08:00
parent 6b8569b0b5
commit 5b8f414a45
31 changed files with 1908 additions and 1239 deletions
--- a/source/src/ECS/Transform.ts
+++ b/source/src/ECS/Transform.ts
@@ -0,0 +1,138 @@
+module es {
+    export class Transform {
+        /** 与此转换关联的实体 */
+        public readonly entity: Entity;
+
+        private _parent: Transform;
+        /**
+         * 获取此转换的父转换
+         */
+        public get parent() {
+            return this._parent;
+        }
+
+        /**
+         * 设置此转换的父转换
+         * @param value
+         */
+        public set parent(value: Transform) {
+            this.setParent(value);
+        }
+
+        /**
+         * 这个转换的所有子元素
+         */
+        public get childCount() {
+            return this._children.length;
+        }
+
+        /**
+         * 变换在世界空间中的位置
+         */
+        public position: Vector2;
+        /**
+         * 变换在世界空间的旋转度
+         */
+        public rotation: number;
+        /**
+         * 变换在世界空间的缩放
+         */
+        public scale: Vector2;
+        public _children: Transform[];
+
+        constructor(entity: Entity) {
+            this.entity = entity;
+            this.scale = Vector2.one;
+            this._children = [];
+        }
+
+        /**
+         * 返回在索引处的转换子元素
+         * @param index
+         */
+        public getChild(index: number): Transform {
+            return this._children[index];
+        }
+
+        /**
+         * 设置此转换的父转换
+         * @param parent
+         */
+        public setParent(parent: Transform): Transform {
+            if (this._parent == parent)
+                return this;
+
+            if (!this._parent) {
+                this._parent._children.remove(this);
+                this._parent._children.push(this);
+            }
+
+            this._parent = parent;
+
+            return this;
+        }
+
+        /**
+         * 设置转换在世界空间中的位置
+         * @param x
+         * @param y
+         */
+        public setPosition(x: number, y: number): Transform {
+            this.position = new Vector2(x, y);
+            return this;
+        }
+
+        /**
+         * 设置变换在世界空间的旋转度
+         * @param degrees
+         */
+        public setRotation(degrees: number): Transform {
+            this.rotation = degrees;
+            return this;
+        }
+
+        /**
+         * 设置变换在世界空间中的缩放
+         * @param scale
+         */
+        public setScale(scale: Vector2): Transform {
+            this.scale = scale;
+            return this;
+        }
+
+        /**
+         * 旋转精灵的顶部，使其朝向位置
+         * @param pos
+         */
+        public lookAt(pos: Vector2) {
+            let sign = this.position.x > pos.x ? -1 : 1;
+            let vectorToAlignTo = Vector2.normalize(Vector2.subtract(this.position, pos));
+            this.rotation = sign * Math.acos(Vector2.dot(vectorToAlignTo, Vector2.unitY));
+        }
+
+        /**
+         * 对精灵坐标进行四舍五入
+         */
+        public roundPosition() {
+            this.position = this.position.round();
+        }
+
+        /**
+         * 从另一个transform属性进行拷贝
+         * @param transform
+         */
+        public copyFrom(transform: Transform) {
+            this.position = transform.position;
+            this.rotation = transform.rotation;
+            this.scale = transform.scale;
+        }
+    }
+}
+
+module Transform {
+    export enum Component {
+        position,
+        scale,
+        rotation,
+    }
+}