HitTestResult* hitTestRectRound(RectBodyNode* a, RoundBodyNode* b)
{
Point ca = a->getCenter();
float wa = a->getWidth();
float ha = a->getHeight();
float aa = CC_DEGREES_TO_RADIANS(-a->getAngle());
float ra = a->getRadius();
Point cb = b->getCenter();
float rb = b->getRadius();
bool hit = isRoundCrossRect(cb, rb, ca, wa, ha, ccpForAngle(aa));
if(hit)
{
Point hp;
float distance;
Vector2 delta = ca - cb;
float deltaLength = ccpLength(delta);
hp = cb + delta/deltaLength * rb;
distance = deltaLength - rb;
return HitTestResult::create(HTRT_CROSS, hp, distance);
}
else
{
return HitTestResult::create(HTRT_NONE);
}
}
void CCCurl::update(float time) {
// radius and angle
float radius = m_fromRadius + time * (m_toRadius - m_fromRadius);
float angle = m_initAngle + time * m_fDuration * m_angularVelocity;
// set target position
CCPoint v = ccpForAngle(angle) * radius;
CCPoint p = ccpAdd(m_center, v);
getTarget()->setPosition(p);
}
//--------------------------------------------------------------------
void FKCW_Action_Curl::update(float time)
{
// 半径和角度
float radius = m_fromRadius + time * (m_toRadius - m_fromRadius);
float angle = m_initAngle + time * m_fDuration * m_angularVelocity;
// 设置目标点
CCPoint v = ccpForAngle(angle) * radius;
CCPoint p = ccpAdd(m_center, v);
getTarget()->setPosition(p);
}
void Ball::collideWithPaddle(Paddle* paddle)
{
CCRect paddleRect = paddle->rect();
paddleRect.origin.x += paddle->getPosition().x;
paddleRect.origin.y += paddle->getPosition().y;
float lowY = CCRect::CCRectGetMinY(paddleRect);
float midY = CCRect::CCRectGetMidY(paddleRect);
float highY = CCRect::CCRectGetMaxY(paddleRect);
float leftX = CCRect::CCRectGetMinX(paddleRect);
float rightX = CCRect::CCRectGetMaxX(paddleRect);
if (getPosition().x > leftX && getPosition().x < rightX) {
bool hit = false;
float angleOffset = 0.0f;
if (getPosition().y > midY && getPosition().y <= highY + radius())
{
setPosition( CCPointMake(getPosition().x, highY + radius()) );
hit = true;
angleOffset = (float)M_PI / 2;
}
else if (getPosition().y < midY && getPosition().y >= lowY - radius())
{
setPosition( CCPointMake(getPosition().x, lowY - radius()) );
hit = true;
angleOffset = -(float)M_PI / 2;
}
if (hit)
{
float hitAngle = ccpToAngle(ccpSub(paddle->getPosition(), getPosition())) + angleOffset;
float scalarVelocity = ccpLength(m_velocity) * 1.05f;
float velocityAngle = -ccpToAngle(m_velocity) + 0.5f * hitAngle;
m_velocity = ccpMult(ccpForAngle(velocityAngle), scalarVelocity);
}
}
}
HitTestResult* hitTestRoundRect(RoundBodyNode* a, RectBodyNode* b)
{
Point ca = a->getCenter();
float ra = a->getRadius();
Point cb = b->getCenter();
float wb = b->getWidth();
float hb = b->getHeight();
float ab = CC_DEGREES_TO_RADIANS(-b->getAngle());
float rb = b->getRadius();
Point rrp;
bool hit = isRoundCrossRect(ca, ra, cb, wb, hb, ccpForAngle(ab), &rrp);
if( hit )
{
float distance;
float angle = ccpToAngle(rrp);
Point hp = ccp(cos(angle), sin(angle)) * rb;
if(hp.x > wb/2)
hp.x = wb/2;
else if(hp.x < -wb/2)
hp.x = -wb/2;
if(hp.y > hb/2)
hp.y = hb/2;
else if(hp.y < -hb/2)
hp.y = -hb/2;
hp = cb + ccpRotateByAngle(hp, POINT_ZERO, ab);
distance = ccpDistance(ca, hp);
return HitTestResult::create(HTRT_CROSS, hp, distance);
}
else
{
return HitTestResult::create(HTRT_NONE);
}
}
