新增ninja adventure例子

source/src/ECS/Components/Sprite.ts

@@ -1,4 +1,8 @@
 module es {
+    import RenderTexture = egret.RenderTexture;
+    import Bitmap = egret.Bitmap;
+    import SpriteSheet = egret.SpriteSheet;
+
     export class Sprite {
         public texture2D: egret.Texture;
         public readonly sourceRect: Rectangle;
@@ -22,5 +26,37 @@ module es {
             this.uvs.width = sourceRect.width * inverseTexW;
             this.uvs.height = sourceRect.height * inverseTexH;
         }
+
+        /**
+         * 提供一个精灵的列/行等间隔的图集的精灵列表
+         * @param texture
+         * @param cellWidth
+         * @param cellHeight
+         * @param cellOffset 处理时要包含的第一个单元格。基于0的索引
+         * @param maxCellsToInclude 包含的最大单元
+         */
+        public static spritesFromAtlas(texture: egret.Texture, cellWidth: number, cellHeight: number,
+                                       cellOffset: number = 0, maxCellsToInclude: number = Number.MAX_VALUE){
+            let sprites: Sprite[] = [];
+            let cols = texture.textureWidth / cellWidth;
+            let rows = texture.textureHeight / cellHeight;
+            let i = 0;
+            let spriteSheet = new SpriteSheet(texture);
+
+            for (let y = 0; y < rows; y ++){
+                for (let x = 0; x < cols; x ++) {
+                    if (i++ < cellOffset) continue;
+
+                    let texture = spriteSheet.getTexture(`${y}_${x}`);
+                    if (!texture)
+                        texture = spriteSheet.createTexture(`${y}_${x}`, x * cellWidth, y * cellHeight, cellWidth, cellHeight);
+                    sprites.push(new Sprite(texture));
+
+                    if (sprites.length == maxCellsToInclude) return sprites;
+                }
+            }
+
+            return sprites;
+        }
     }
 }

source/src/ECS/Components/SpriteAnimator.ts

@@ -82,7 +82,7 @@ module es {
                 this.animationState = State.completed;
                 this._elapsedTime = 0;
                 this.currentFrame = 0;
-                this.sprite = animation.sprites[this.currentFrame];
+                (this.displayObject as egret.Bitmap).texture = animation.sprites[this.currentFrame].texture2D;
                 return;
             }
 
@@ -97,7 +97,7 @@ module es {
                 this.currentFrame = i % n;
             }
 
-            this.sprite = animation.sprites[this.currentFrame];
+            (this.displayObject as egret.Bitmap).texture = animation.sprites[this.currentFrame].texture2D;
         }
 
         /**
@@ -123,8 +123,7 @@ module es {
             this.currentAnimationName = name;
             this.currentFrame = 0;
             this.animationState = State.running;
-
-            this.sprite = this.currentAnimation.sprites[0];
+            (this.displayObject as egret.Bitmap).texture = this.currentAnimation.sprites[0].texture2D;
             this._elapsedTime = 0;
             this._loopMode = loopMode ? loopMode : LoopMode.loop;
         }