void BouncyLogo::initPos()
{
initSpeed();
int trial=1000;
do {
setPos(qrand()%int(scene()->width()),qrand()%int(scene()->height()));
advance(0);
} while (trial-- && xvel==0.0 && yvel==0.0);
}
void BouncyLogo::initPos()
{
initSpeed();
int trial=1000;
do {
move(rand()%canvas()->width(),rand()%canvas()->height());
advance(0); // 動畫不移動
} while (trial-- && xVelocity()==0.0 && yVelocity()==0.0); // trial不為0且x,y速度都為0
}
void BouncyLogo::advance(int stage)
{
switch ( stage ) {
case 0: {
double vx = xvel;
double vy = yvel;
if ( vx == 0.0 && vy == 0.0 ) {
// stopped last turn
initSpeed();
vx = xvel;
vy = yvel;
}
double nx = x() + vx;
double ny = y() + vy;
if ( nx < 0 || nx >= scene()->width() )
vx = -vx;
if ( ny < 0 || ny >= scene()->height() )
vy = -vy;
for (int bounce=0; bounce<4; bounce++) {
QList<QGraphicsItem *> l=scene()->collidingItems(this);
for (QList<QGraphicsItem *>::Iterator it=l.begin(); it!=l.end(); ++it) {
QGraphicsItem *hit = *it;
QPainterPath advancedShape = QMatrix().translate(xvel, yvel).map(shape());
if ( hit->type()==logo_rtti && hit->collidesWithPath(mapToItem(hit, advancedShape)) ) {
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;
}
xvel = vx;
yvel = vy;
break;
}
}
}
if ( x()+vx < 0 || x()+vx >= scene()->width() )
vx = 0;
if ( y()+vy < 0 || y()+vy >= scene()->height() )
vy = 0;
xvel = vx;
yvel = vy;
} break;
case 1:
moveBy(xvel, yvel);
break;
}
}
void initPowUps(){
initFood();
initSpeed();
initFreeze();
initEdwards();
}
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;
}
}
Character::Character(qreal p_x, qreal p_y, Maze* p_maze) : Element(p_x, p_y, p_maze), m_xSpeed(0), m_ySpeed(0) {
initSpeed();
m_maxSpeed = m_normalSpeed; // To avoid bugs, but will be overridden in the Ghost and Kapman constructors
}
Character::Character(qreal p_x, qreal p_y, Arena* p_arena) : Element(p_x, p_y, p_arena), m_xSpeed(0), m_ySpeed(0)
{
initSpeed();
m_maxSpeed = m_normalSpeed; // To avoid bugs, but will be overridden in the Player constructors
}
