[adapters] 增加小游戏适配部分源码

adapters/platforms/bytedance/wrapper/sub-context-adapter.js

@@ -0,0 +1,100 @@
+// Ensure recieving message from main context before engine being inited
+let isEngineReady = false;
+const game = cc.game;
+game.once(game.EVENT_ENGINE_INITED, function () {
+    isEngineReady = true;
+});
+
+var viewportInMain = {
+    x: 0,
+    y: 0,
+    width: 0,
+    height: 0
+};
+
+// Touch conversion
+cc.view.convertToLocationInView = function (tx, ty, relatedPos, out) {
+    var result = out || cc.v2();
+    var x = this._devicePixelRatio * (tx - relatedPos.left);
+    var y = this._devicePixelRatio * (relatedPos.top + relatedPos.height - ty);
+    // Move to real viewport area
+    x = (x - viewportInMain.x) * this._viewportRect.width / viewportInMain.width;
+    y = (y - viewportInMain.y) * this._viewportRect.height / viewportInMain.height;
+    if (this._isRotated) {
+        result.x = this._viewportRect.width - y;
+        result.y = x;
+    }
+    else {
+        result.x = x;
+        result.y = y;
+    }
+    return result;
+};
+
+// In sub context, run main loop after subContextView component get enabled.
+game._prepareFinished = function (cb) {
+    this._prepared = true;
+
+    // Init engine
+    this._initEngine();
+    cc.assetManager.builtins.init(() => {
+        // Log engine version
+        console.log('Cocos Creator v' + cc.ENGINE_VERSION);
+
+        this._setAnimFrame();
+        
+        this.emit(this.EVENT_GAME_INITED);
+
+        if (cb) cb();
+    });
+};
+
+tt.onMessage(function (data) {
+    if (data.fromEngine) {
+        if (data.event === 'boot') {
+            game._banRunningMainLoop = false;
+            if (game._firstSceneLaunched) {
+                game._runMainLoop();
+            }
+        }
+        else if (data.event === 'viewport') {
+            viewportInMain.x = data.x;
+            viewportInMain.y = data.y;
+            viewportInMain.width = data.width;
+            viewportInMain.height = data.height;
+        }
+        else if (data.event === 'resize') {
+            window.dispatchEvent({type: 'resize'});
+        }
+        else if (isEngineReady) {
+            if (data.event === 'mainLoop') {
+                if (data.value) {
+                    game.resume();
+                }
+                else {
+                    game.pause();
+                }
+            }
+            else if (data.event === 'frameRate') {
+                game.setFrameRate(data.value);
+            }
+            else if (data.event === 'step') {
+                game.step();
+            }
+        }
+    }
+});
+
+// Canvas component adaptation
+
+cc.Canvas.prototype.update = function () {
+    if (this._width !== game.canvas.width || this._height !== game.canvas.height) {
+        this.applySettings();
+    }
+};
+let originalApplySettings = cc.Canvas.prototype.applySettings;
+cc.Canvas.prototype.applySettings = function () {
+    originalApplySettings.call(this);
+    this._width = game.canvas.width;
+    this._height = game.canvas.height;
+};