调整项目结构，改为背景适配，内容适配，内容适配（支持动画）三个场景

assets/Script/MultiResolution/CloseToBorderComponent.ts

@@ -0,0 +1,28 @@
+import MultiResolutionCompat from "./MultiResoultionCompat";
+
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class CloseToBorderComponent extends cc.Component {
+    @property()
+    isCloseToBottom: boolean = false;
+
+    @property()
+    closeToBottonPx: number = 0;
+
+    onLoad() {
+        this.node.position = this.getShowAllModeNodePositionCloseToBottom(this.node.position);
+    }
+
+    /**
+     * 计算当前游戏设计分辨率在ShowAll模式适配后，传入来的原始坐标在ShowAll模式下的「贴近屏幕底部」实际坐标值
+     */
+    getShowAllModeNodePositionCloseToBottom(nodePosInDesign: cc.Vec2): cc.Vec2 {
+        let srcScaleForShowAll = MultiResolutionCompat.getShowAllModeScale();
+        let bottomBorderHeightInCanvas = MultiResolutionCompat.getShowAllModeVerticalBorderHeight() / 2;
+        let srcNodePosYInCanvas = nodePosInDesign.y * srcScaleForShowAll;
+        let finalNodePosYInCanvas = srcNodePosYInCanvas - bottomBorderHeightInCanvas;
+        let nodePosYInDesign = finalNodePosYInCanvas / srcScaleForShowAll;
+        return cc.v2(nodePosInDesign.x, nodePosYInDesign);
+    }
+}