由於每當一點遊戲場景畫面，藍紅色小人就會一起移動，現在我們就來修改點擊判斷，將點擊判斷分成左右兩邊。

首先用SpriteBuilder開啟TouchAndPush專案。

拖拉兩個顏色物件(藍色、紅色)增加至GamePlayScene遊戲場景之中。

佈局流程如下：

藍色區塊Doc root var: _blueArea
紅色區塊Doc root var: _redArea

佈局完發佈置Xcode之中，並且編輯GamePlayScene遊戲場景

程式方法解釋：

將UIKit坐標轉化為OpenGL坐標
- (CGPoint)convertToGL:(CGPoint)p

獲得物件的範圍大小
- (CGRect)boundingBox

判斷點擊的點point是否在rect範圍內
bool CGRectContainsPoint ( CGRect rect, CGPoint point );

判斷範圍rect1與範圍rect2相交
bool CGRectIntersectsRect ( CGRect rect1, CGRect rect2 );

替遊戲場景增加_blueArea、_redArea變數
@interface GamePlayScene () {
// =======================
// 程式省略...
// =======================
CCNodeColor *_blueArea;
CCNodeColor *_redArea;
}

修改點擊事件程式：
- (void)touchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
if (isGameReady == NO) {
return;
}
if (maxTimer > 0.0f) {
// =======================
// 獲取畫面點擊的位置
// 將點擊的UIKit坐標轉化為OpenGL坐標
// =======================
CGPoint touchPoint = [touch locationInView:[touch view]];
touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint];

// =======================
// 藍色、紅色透明點擊區塊
// =======================
CGRect blueAreaRect = [_blueArea boundingBox];
CGRect redAreaRect = [_redArea boundingBox];

// =======================
// 藍色、紅色小人的範圍區塊
// =======================
CGRect bluePlayerRect = [_bluePlayer boundingBox];
CGRect redPlayerRect = [_redPlayer boundingBox];

// =======================
// 藍色、紅色透明區塊是否被點擊
// =======================
BOOL isTouchInSideBlueArea = CGRectContainsPoint(blueAreaRect, touchPoint);
BOOL isTouchInSideRedArea = CGRectContainsPoint(redAreaRect, touchPoint);

// =======================
// 左右移動動畫
// =======================
CCActionMoveBy *rightMoveAction = [CCActionMoveBy actionWithDuration:0.5
position:ccp(10, 0)];
CCActionMoveBy *leftMoveAction = [CCActionMoveBy actionWithDuration:0.5
position:ccp(-10, 0)];

// =======================
// 藍色、紅色小人範圍區塊碰撞
// =======================
if (CGRectIntersectsRect(bluePlayerRect, redPlayerRect)) {

// =======================
// 點擊藍色透明區塊，藍色、紅色小人向右移動
// =======================
if (isTouchInSideBlueArea) {
[_bluePlayer runAction:rightMoveAction];
[_redPlayer runAction:rightMoveAction];
}

// =======================
// 點擊紅色透明區塊，紅色、藍色小人向左移動
// =======================
if (isTouchInSideRedArea) {
[_redPlayer runAction:leftMoveAction];
[_bluePlayer runAction:leftMoveAction];
}
} else {

// =======================
// 藍色、紅色小人非碰撞
// =======================

if (isTouchInSideBlueArea) {
[_bluePlayer runAction:rightMoveAction];
}

if (isTouchInSideRedArea) {
[_redPlayer runAction:leftMoveAction];
}
}
}
}

執行結果如下：

點擊藍色區塊，藍色小人移動

點擊紅色區塊，紅色小人移動

兩個小人碰撞互推移動