Question

我正在使用cocos2d-x v3.3rc0
我试图处理多点触控，但我只收到一次触摸它的行为类似于单点触控，而不是多点触控。当触摸超过1个手指时，onTouchesBegan只调用一次。

希望有人可以帮我解决这个问题。

以下是启用多点触控的代码

ControlLayer.h

#include "cocos2d.h"

class ControlLayer : public cocos2d::Layer{


public:

    static ControlLayer* create();
    virtual bool init();

    void onTouchesBegan(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);
    void onTouchesMoved(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);
    void onTouchesEnded(const std::vector<cocos2d::Touch*>& touches, cocos2d::Event *unused_event);

};

ControlLayer.cpp

bool ControlLayer::init(){

    if (!Layer::init()){
        return false;
    }

    auto touchListener = EventListenerTouchAllAtOnce::create();
    touchListener->onTouchesBegan = CC_CALLBACK_2(ControlLayer::onTouchesBegan, this);
    touchListener->onTouchesMoved = CC_CALLBACK_2(ControlLayer::onTouchesMoved, this);
    touchListener->onTouchesEnded = CC_CALLBACK_2(ControlLayer::onTouchesEnded, this);

    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(touchListener, this);

    return true;
}

void ControlLayer::onTouchesBegan(const std::vector<Touch*>& touches, Event *unused_event){
    CCLOG("onTouchesBegan[%lu]", touches.size());
}
void ControlLayer::onTouchesMoved(const std::vector<Touch*>& touches, Event *unused_event){
    CCLOG("onTouchesMoved[%lu]", touches.size());
}
void ControlLayer::onTouchesEnded(const std::vector<Touch*>& touches, Event *unused_event){

}

Answer 1

您必须在每个平台上启用多点触控才能在本地支持它。

这是一个例子（iOS）：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

// Override point for customization after application launch.

// Add the view controller's view to the window and display.
window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];

// Init the CCEAGLView
CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [window bounds]
                                 pixelFormat: kEAGLColorFormatRGBA8
                                 depthFormat: GL_DEPTH24_STENCIL8_OES
                          preserveBackbuffer: NO
                                  sharegroup: nil
                               multiSampling: NO
                             numberOfSamples: 0];

[eaglView setMultipleTouchEnabled:YES]; // <-----

Answer 2

您必须在项目的iOS部分启用多点触控，即使项目的其余部分是用C ++编写的，也会在Objective C中启用。模板项目在app控制器（AppController.mm）中有行Msg 208, Level 16, State 1, Line 1 Invalid object name 'dbo.tdnResetTicket'.，您可以将NO更改为YES。

Answer 3

对于iOS，您需要启用它。从Cocos2d-x 3.16开始，修改RootViewController.mm命令行工具生成的cocos new的单行以启用多点触控。

--- a/proj.ios_mac/ios/RootViewController.mm
+++ b/proj.ios_mac/ios/RootViewController.mm
@@ -52,7 +52,7 @@
                                      numberOfSamples: 0 ];

     // Enable or disable multiple touches
-    [eaglView setMultipleTouchEnabled:NO];
+    [eaglView setMultipleTouchEnabled:YES];

无法在cocos2d-x v3上进行多点触控工作

3 个答案: