Ejemplo n.º 1
0
void Snake::detectCrash()
{
    QCanvasSprite* head = snakelist.first();
    QCanvasItem* item;
    QCanvasItemList l=head->collisions(FALSE);
    for (QCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it) {
       item = *it;
       // check if snake hit target
       if ( (item->rtti()== 1500 ) && (item->collidesWith(head)) ) {
              Target* target = (Target*) item;
              target->done();
              emit targethit();
              extendSnake();
              setScore(5);
              return;
       }
       // check if snake hit obstacles
       if ( (item->rtti()==1600) && (item->collidesWith(head)) ) {
             emit dead();
             autoMoveTimer->stop();
             return;
       }
    }
    //check if snake hit itself
    for (uint i = 3; i < snakelist.count(); i++) {
       if (head->collidesWith(snakelist.at(i)) ) {
            emit dead();
            autoMoveTimer->stop();
            return;
       }
   }
   //check if snake hit edge
   if ( (head->x() > canvas->width()-5) || (head->y() > canvas->height()-10)
         || (head->x() <2) || (head->y() <-5) ) {
        emit dead();
        autoMoveTimer->stop();
        return;
   }
}
Ejemplo n.º 2
0
void Bullet::checkCollision()
{
    QCanvasItem* item;
    QCanvasItemList l=collisions(FALSE);
      for (QCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it) {
          item = *it;
          if ( (item->rtti()== 1500) && (item->collidesWith(this)) ) {
               Man* deadman = (Man*)item;
               if (deadman->frame() != 5) return;
               deadman->done();
	       emit score(10);
               setShotCount(shotcount+1);
               setAnimated(false);
               nobullets--;
               delete this;
               return;
          }
          else if ( (item->rtti()==1900) && (item->collidesWith(this)) ) {
               Helicopter* deadchopper = (Helicopter*) item;
               deadchopper->done();
	       emit score(50);
               setAnimated(false);
               nobullets--;
               delete this;
               return;
         }
      }
      //check shot is not out of bounds
     if ( (y() < 0) || (x() < 0) ||
          (y() > canvas()->height()) ||
          ( x() > canvas()->width()))  {
          setAnimated(false);
          nobullets--;
          delete this;
          return;
     }
}
Ejemplo n.º 3
0
void BouncyLogo::advance(int stage)
{
    switch ( stage ) {
      case 0: {
	double vx = xVelocity();
	double vy = yVelocity();

	if ( vx == 0.0 && vy == 0.0 ) {
	    // stopped last turn
	    initSpeed();
	    vx = xVelocity();
	    vy = yVelocity();
	}

	double nx = x() + vx;
	double ny = y() + vy;

	if ( nx < 0 || nx >= canvas()->width() )
	    vx = -vx; // 換反方向
	if ( ny < 0 || ny >= canvas()->height() )
	    vy = -vy; // 換反方向

	for (int bounce=0; bounce<4; bounce++) {
	    QCanvasItemList l=collisions(FALSE); // 沒有那麼精準的傳回所有有碰撞的canvas item
	    for (QCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it) {
		QCanvasItem *hit = *it;
		if ( hit->rtti()==logo_rtti && hit->collidesWith(this) ) {
		    switch ( bounce ) {
		      case 0:
			vx = -vx;
			break;
		      case 1:
			vy = -vy;
			vx = -vx;
			break;
		      case 2:
			vx = -vx;
			break;
		      case 3:
			// Stop for this turn
			vx = 0;
			vy = 0;
			break;
		    }
		    setVelocity(vx,vy);
		    break;
		}
	    }
	}

	if ( x()+vx < 0 || x()+vx >= canvas()->width() )
	    vx = 0;
	if ( y()+vy < 0 || y()+vy >= canvas()->height() )
	    vy = 0;

	setVelocity(vx,vy);
      } break;
      case 1:
	QCanvasItem::advance(stage);
	break;
    }
}