Thắc mắc phần ĐIỂM trong trò chơi "PINBALL" (lập trình hướng đối tượng)

[Yoh]

Các a đi qua xem hộ e cái này với ạ! Phần điểm nó cộng k như ý muốn. E muốn khi đập vào gạch thì điểm nó ++ nhưng k đc

#include<conio.h>#include<stdio.h>#include<stdlib.h>#include<graphics.h>#include<iostream.h>#include<dos.h>//============================================//class HCN;class TUONG;class BONG;class THANH;class PINBALL;//===========================================// class HCN{    private:        int x,y,d,r,m;    public:        void taoHCN(int,int,int,int,int);        void ve();        void xoa();        int &getX();        int &getY();        int &getD();        int &getR();};class TUONG{    private:        HCN a[50];        int n;    public:        void taotuong();        void ve();        void xoa();        HCN getTUONG(int k)        {            return a[k];        }        int &getN()        {            return n;        }};class BONG{    private:        int x,y,r,m;    public:        void taobong(int,int,int,int);        void ve();        void xoa();        int &getX();        int &getY();        int &getR();};class THANH{    private:        int x,y,d,r,m;    public:        void taothanh(int,int,int,int,int);        void ve();        void xoa();        int &getX();        int &getY();        int &getD();        int &getR();};  class PINBALL{    private:        TUONG tuong;        BONG bong;        THANH thanh;    public:        void khoitao();        void play();        int ktDobong();        int ktTruotbong();};//================================================////---------Cac ham trong class BONG----------------// void BONG::taobong(int x1,int y1,int r1,int m1)    {        x=x1;        y=y1;        r=r1;        m=m1;    }void BONG::ve()    {        setcolor(m);        circle(x,y,r);        circle(x,y,r+1);    }void BONG::xoa()    {        setcolor(BLACK);        circle(x,y,r);        circle(x,y,r+1);    } int &BONG::getX()    {        return x;    }int &BONG::getY()    {        return y;    }int &BONG::getR()    {        return r;    }//----------------- Cac ham trong class HCN---------//void HCN::taoHCN(int x1,int y1,int d1, int r1, int m2)    {        x=x1;        y=y1;        d=d1;        r=r1;        m=m2;     }void HCN::ve()    {        setcolor(m);        rectangle(x,y,x+d,y+r);     }void HCN::xoa()    {        setcolor(getbkcolor());        rectangle(x,y,x+d,y+r);    } int &HCN::getX()    {        return x;           //   return x2;    }int &HCN::getY()    {        return y;    }int &HCN::getD()    {        return d;    }int &HCN::getR()    {        return r;    }//----------------------------------------------//void ktdh()    {        int gm=0,gd=0;        initgraph(&gm,&gd,"..\\BGI");        if(graphresult()!=0)        {            cout<<"Loi do hoa";getch();exit(1);        }    } //------------------ tao khung---------------//void khung(int maukhung)    {        setcolor(maukhung);        rectangle(0,0,getmaxx(),getmaxy());        line(getmaxx()-70,0, getmaxx()-70, getmaxx());        setcolor(13);        outtextxy(getmaxx()-50, 50,"DIEM");        outtextxy(getmaxx()-50, 150,"TRUOT");        setcolor(WHITE);        outtextxy(getmaxx()-60, 350,"PINBALL");        outtextxy(getmaxx()-50, 365,"GAME");        outtextxy(getmaxx()-50, 380,"10B3");     }int diem=0,truot=0;void sodiem(){  char s[3];  setcolor(BLACK);  setfillstyle(SOLID_FILL, BLACK);  bar(getmaxx()-50, 60, getmaxx()-5,90);  sprintf(s, "%d",diem);  setcolor(YELLOW);  outtextxy(getmaxx()-37, 70, s);}void sotruot(){  char s[3];  setcolor(BLUE);  setfillstyle(SOLID_FILL, BLACK);  bar(getmaxx()-50, 160, getmaxx()-10, 180);  sprintf(s, "%d",truot);  setcolor(YELLOW);  outtextxy(getmaxx()-33,170, s);}//--------- Cac ham trong class THANH--------//void THANH::taothanh(int x1,int y1,int d1, int r1, int m1)    {        x=x1;        y=y1;        d=d1;        r=r1;        m=m1;     }void THANH::ve()    {        setcolor(m);        setfillstyle(1,13);        rectangle(x,y,x+d,y+r);    }void THANH::xoa()    {        setcolor(getbkcolor());        setfillstyle(1,getbkcolor());        rectangle(x,y,x+d,y+r);    } int &THANH::getX()    {        return x;    }int &THANH::getY()    {        return y;    }int &THANH::getD()    {        return d;    }int &THANH::getR()    {        return r;    } //----------------- Cac ham trong class TUONG ---------//void TUONG::taotuong()    {         int i,j;        n=9;        a[0].taoHCN(10,5,50,10,WHITE);          for(i=1;i<=n;i++)             {            a[i].taoHCN(a[i-1].getX()+56,5,50,10,WHITE);              }    }void TUONG::ve()    {        for(int i=0;i<=n;i++)           {    setcolor(WHITE);            a[i].ve();           }    }void TUONG::xoa()    {        for(int i=0;i<=n;i++)        a[i].xoa();    }//=================================================//void PINBALL::khoitao(){    int maukhung;    maukhung=rand()%14+1;    khung(maukhung);    sodiem();    sotruot();    bong.taobong(240,454,5,YELLOW);    bong.ve();    thanh.taothanh(200,466,80,10,WHITE);    thanh.ve();    tuong.taotuong();    tuong.ve();}void PINBALL::play(){    khoitao();    int dx=1;    int dy=1;    int i;    char ch;    int n=11;    do    {        int xb,yb;        xb=bong.getX();        yb=bong.getY();        bong.ve();        delay(5);        bong.xoa();        bong.getX()+=dx;        bong.getY()-=dy;        if(bong.getX()>getmaxx()-78||bong.getX()<8)            {            dx=-dx;            }        if(bong.getY()<8||abs(thanh.getY()-bong.getY())<=8&&thanh.getX()<=bong.getX()&&bong.getX()<=(thanh.getX()+80))            {            dy=-dy;            }        for(i=0;i<=n;i++)        {            if(abs(yb-tuong.getTUONG(i).getY()-10)<=5&&xb>tuong.getTUONG(i).getX()&&xb<(tuong.getTUONG(i).getX()+50))                {                tuong.getTUONG(i).xoa();//                  dy=-dy;                      //    dx=dx;                      diem++;                    sodiem();                    break;                }        }          if((xb<thanh.getX()||xb>(thanh.getX()+80))&&yb>=(getmaxy()-12))        {            truot++;            bong.taobong(thanh.getX()+40,thanh.getY()-10,5,YELLOW);            bong.ve();            delay(5);            bong.xoa();            bong.getX()+=dx;            bong.getY()-=dy;            sotruot();        }        if(truot==3)        {            break;        }        if(kbhit())        {        ch=getch();        if(ch==27)        break;        if(ch==77&&thanh.getX()<getmaxx()-165)            {                thanh.xoa();                thanh.getX()=thanh.getX()+15;                thanh.ve();            }        if(ch==75&&thanh.getX()>10)            {                thanh.xoa();                thanh.getX()=thanh.getX()-15;                thanh.ve();            }        }    } while(ch!=27);}void main(){    ktdh();    PINBALL ok;    ok.play();    getch();}