Marmalade SDK Multitouch

我需要帮助。我做游戏黑莓playbook，但我有麻烦的多点触控事件处理。我使用从例子中获取的CInput类来处理触摸事件，它工作(所有的触摸都有正确的坐标和触摸计数正确)，但是当在同一时间进行2次触摸和释放触摸时，CInput没有释放1个事件，就像我没有释放触摸一样出错。我可以在模拟器或剧本中看到这个bug。本部分适用于接触工作。我怎样才能修好它?如果有人能帮忙，谢谢。抱歉我的英语不好

void touchUpdate()
{
    g_Input.Update();
    printf("count %dn", g_Input.getTouchCount());
    if (g_Input.getTouchCount() != 0)
    {
        CTouch* touch;
        if (g_Input.isMultiTouch())
        {
            for (int i = 0; i < g_Input.getTouchCount(); i++)
            {
                touch = g_Input.getTouch(i);
                if (touch != NULL)
                {
                    if (!touch->active)
                    {
                        touch->x = -1;
                        touch->y = -1;
                        continue;
                    }
                    else if (checkButton(&btnAction, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventAction();
                        }
                        else
                        {
                            currentGame = menu->eventAction();
                        }
                        continue;
                    }
                    else if (checkButton(&btnUp, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventUp();
                        }
                        else
                        {
                            menu->eventUp();
                        }
                        continue;
                    }
                    else if (checkButton(&btnDown, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventDown();
                        }
                        else
                        {
                            menu->eventDown();
                        }
                        continue;
                    }
                    else if (checkButton(&btnLeft, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventLeft();
                        }
                        else
                        {
                            menu->eventLeft();
                        }
                        continue;
                    }
                    else if (checkButton(&btnRight, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventRight();
                        }
                        else
                        {
                            menu->eventRight();
                        }
                        continue;
                    }
                    else if (checkButton(&btnPause, touch))
                    {
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventPause();
                        }
                        continue;
                    }
                    else if (checkButton(&btnSound, touch))
                    {
                        //  off/on sound
                        continue;
                    }
                    else if (checkButton(&btnMenu, touch))
                    {
                        //  force drop to menu
                        if (menu->isGameEnabled())
                        {
                            currentGame->eventMenu();
                        }
                        continue;
                    }
                }
            }
        }
    }
}

currentGame->eventMenu()， currentGame->eventUp()等…它只是在游戏逻辑或主菜单中起作用。这个函数必须在按下按钮时调用。

struct roundButton
{
    int  x, y;
    int  radius;
    bool pressed;
};
bool checkButton(roundButton *button, CTouch *touch)
{
    if ((button->x - touch->x) * (button->x - touch->x) + (button->y - touch->y) * (button->y - touch->y) <= button->radius * button->radius)
    {
        button->pressed = true;
        return true;
    }
    return false;
}

这是我检查按钮是否按下的方式

#ifndef SRC_INPUT_H_
#define SRC_INPUT_H_
#include "IwGeom.h"
#include "s3ePointer.h"
#define MAX_TOUCHES 2
struct CTouch
{
public:
    int  x, y;
    bool active;
    int  id;
};
class CInput
{
private:
    bool        Available;                                          // true if a pointer is present
    bool        IsMultiTouch;                                       // true if multitouch is enabled
    CTouch      Touches[MAX_TOUCHES];                               // List of potential touches
public:
    bool        isAvailable() const { return Available; }           // Returns availability of the pointer
    bool        isMultiTouch() const { return IsMultiTouch; }       // Returns multitouch capability
    CTouch*     getTouchByID(int id);                               // returns the touch identified by its id
    CTouch*     getTouch(int index) { return &Touches[index]; }     // Gets a specific touch
    CTouch*     findTouch(int id);                                  // Finds a specific touch by its id
    int         getTouchCount() const;                              // Get number of touches this frame
public:
    bool        Init();                                             // Initialises the input system (returns true if pointer is supported)
    void        Release();                                          // Releases data used by the input system
    void        Update();                                           // Updates the input system, called every frame
};
extern CInput g_Input;
#endif  // SRC_INPUT_H_

CInput类

#include "input.h"
CInput g_Input;
void HandleMultiTouchButtonCB(s3ePointerTouchEvent* event)
{
    CTouch* touch = g_Input.findTouch(event->m_TouchID);
    if (touch != NULL)
    {
        touch->active = event->m_Pressed != 0;
        touch->x = event->m_x;
        touch->y = event->m_y;
    }
}
void HandleMultiTouchMotionCB(s3ePointerTouchMotionEvent* event)
{
    CTouch* touch = g_Input.findTouch(event->m_TouchID);
    if (touch != NULL)
    {
        touch->x = event->m_x;
        touch->y = event->m_y;
    }
}
void HandleSingleTouchButtonCB(s3ePointerEvent* event)
{
    CTouch* touch = g_Input.getTouch(0);
    touch->active = event->m_Pressed != 0;
    touch->x = event->m_x;
    touch->y = event->m_y;
}
void HandleSingleTouchMotionCB(s3ePointerMotionEvent* event)
{
    CTouch* touch = g_Input.getTouch(0);
    touch->x = event->m_x;
    touch->y = event->m_y;
}
CTouch* CInput::findTouch(int id)
{
    if (!Available)
        return NULL;
    for (int t = 0; t < MAX_TOUCHES; t++)
    {
        if (Touches[t].id == id)
            return &Touches[t];
        if (!Touches[t].active)
        {
            Touches[t].id = id;
            return &Touches[t];
        }
    }
    return NULL;
}
CTouch* CInput::getTouchByID(int id)
{
    for (int t = 0; t < MAX_TOUCHES; t++)
    {
        if (Touches[t].active && Touches[t].id == id)
            return &Touches[t];
    }
    return NULL;
}
int CInput::getTouchCount() const
{
    if (!Available)
        return 0;
    int count = 0;
    for (int t = 0; t < MAX_TOUCHES; t++)
    {
        if (Touches[t].active)
            count++;
    }
    return count;
}
bool CInput::Init()
{
    Available = s3ePointerGetInt(S3E_POINTER_AVAILABLE) ? true : false;
    if (!Available)
        return false;
    for (int t = 0; t < MAX_TOUCHES; t++)
    {
        Touches[t].active = false;
        Touches[t].id = 0;
    }
    IsMultiTouch = s3ePointerGetInt(S3E_POINTER_MULTI_TOUCH_AVAILABLE) ? true : false;
    if (IsMultiTouch)
    {
        s3ePointerRegister(S3E_POINTER_TOUCH_EVENT, (s3eCallback)HandleMultiTouchButtonCB, NULL);
        s3ePointerRegister(S3E_POINTER_TOUCH_MOTION_EVENT, (s3eCallback)HandleMultiTouchMotionCB, NULL);
    }
    else
    {
        s3ePointerRegister(S3E_POINTER_BUTTON_EVENT, (s3eCallback)HandleSingleTouchButtonCB, NULL);
        s3ePointerRegister(S3E_POINTER_MOTION_EVENT, (s3eCallback)HandleSingleTouchMotionCB, NULL);
    }
    return true;
}
void CInput::Release()
{
    if (Available)
    {
        if (IsMultiTouch)
        {
            s3ePointerUnRegister(S3E_POINTER_TOUCH_EVENT, (s3eCallback)HandleMultiTouchButtonCB);
            s3ePointerUnRegister(S3E_POINTER_TOUCH_MOTION_EVENT, (s3eCallback)HandleMultiTouchMotionCB);
        }
        else
        {
            s3ePointerUnRegister(S3E_POINTER_BUTTON_EVENT, (s3eCallback)HandleSingleTouchButtonCB);
            s3ePointerUnRegister(S3E_POINTER_MOTION_EVENT, (s3eCallback)HandleSingleTouchMotionCB);
        }
    }
}
void CInput::Update()
{
    if (Available)
        s3ePointerUpdate();
}