optimize: support Touch.clone() method and remove clone param

cocos · Sep 11, 2023 · 739bd4b · 739bd4b
1 parent 205cba2
commit 739bd4b
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Showing 3 changed files with 27 additions and 11 deletions.
diff --git a/cocos/input/input.ts b/cocos/input/input.ts
@@ -251,9 +251,9 @@ export class Input {
      * @param clone - Whether to clone touch object
      * @returns
      */
-    public getTouch (touchID: number, clone?: boolean): Touch | undefined {
+    public getTouch (touchID: number): Touch | undefined {
         const touch = touchManager._touchMap.get(touchID);
-        return touch ? (clone === false ? touch : touchManager._cloneTouch(touch)) : undefined;
+        return touch;
     }
 
     /**
@@ -263,8 +263,8 @@ export class Input {
      * 获取当前 所有touch对象 的数组。
      * @param clone - Whether to clone touch object
      */
-    public getAllTouches (clone?: boolean): Touch[] {
-        return touchManager.getAllTouches(clone);
+    public getAllTouches (): Touch[] {
+        return touchManager.getAllTouches();
     }
 
     /**

diff --git a/cocos/input/types/touch.ts b/cocos/input/types/touch.ts
@@ -199,7 +199,7 @@ export class Touch {
 
         _vec2.set(this._point);
         _vec2.subtract(this._prevPoint);
-        out.set(cclegacy.view.getScaleX(), cclegacy.view.getScaleY());
+        out.set(cclegacy.view.getScaleX() as number, cclegacy.view.getScaleY() as number);
         Vec2.divide(out, _vec2, out);
         return out;
     }
@@ -261,7 +261,7 @@ export class Touch {
      * @param x - x position of the touch point
      * @param y - y position of the touch point
      */
-    public setTouchInfo (id = 0, x?: number, y?: number): void {
+    public setTouchInfo (id: number = 0, x: number = 0, y: number = 0): void {
         this._prevPoint = this._point;
         this._point = new Vec2(x || 0, y || 0);
         this._id = id;
@@ -321,6 +321,21 @@ export class Touch {
         }
         this._lastModified = cclegacy.game.frameStartTime;
     }
+
+    /**
+     * @zh Touch 对象的原始数据不应该被修改。如果你需要这么做，最好克隆一个新的对象。
+     * @en The original Touch object shouldn't be modified. If you need to, it's better to clone a new one.
+     */
+    public clone (): Touch {
+        const touchID = this.getID();
+        this.getStartLocation(_vec2);
+        const clonedTouch = new Touch(_vec2.x, _vec2.y, touchID);
+        this.getLocation(_vec2);
+        clonedTouch.setPoint(_vec2.x, _vec2.y);
+        this.getPreviousLocation(_vec2);
+        clonedTouch.setPrevPoint(_vec2);
+        return clonedTouch;
+    }
 }
 
 cclegacy.Touch = Touch;
diff --git a/pal/input/touch-manager.ts b/pal/input/touch-manager.ts
@@ -32,6 +32,7 @@ const tempVec2 = new Vec2();
 class TouchManager {
     /**
      * A map from touch ID to touch object.
+     * @engineInternal
      */
     public _touchMap: Map<number, Touch>;
     private readonly _maxTouches = 8;
@@ -45,7 +46,7 @@ class TouchManager {
      * @param touch
      * @returns
      */
-    public _cloneTouch (touch: Touch): Touch {
+    private _cloneTouch (touch: Touch): Touch {
         const touchID = touch.getID();
         touch.getStartLocation(tempVec2);
         const clonedTouch = new Touch(tempVec2.x, tempVec2.y, touchID);
@@ -100,25 +101,25 @@ class TouchManager {
      * @param touchID
      * @returns
      */
-    public getTouch (touchID: number, x: number, y: number, clone?: boolean): Touch | undefined {
+    public getTouch (touchID: number, x: number, y: number): Touch | undefined {
         let touch = this._touchMap.get(touchID);
         if (!touch) {
             touch = this._createTouch(touchID, x, y);
         } else {
             this._updateTouch(touch, x, y);
         }
-        return touch ? (clone === false ? touch : this._cloneTouch(touch)) : undefined;
+        return touch;
     }
 
     /**
      * Get all the current touches objects.
      * @returns
      */
-    public getAllTouches (clone?: boolean): Touch[] {
+    public getAllTouches (): Touch[] {
         const touches: Touch[] = [];
         this._touchMap.forEach((touch) => {
             if (touch) {
-                touches.push(clone === false ? touch : this._cloneTouch(touch));
+                touches.push(touch);
             }
         });
         return touches;