void PaintLayer::fillLineEndPointAt(CCPoint center, CCPoint aLineDir, float radius, ccColor4F color)
{
int numberOfSegments = 32;
LineVertex *vertices = (LineVertex *)malloc(sizeof(LineVertex) * numberOfSegments * 9);
float anglePerSegment = (float)(M_PI / (numberOfSegments - 1));
//! we need to cover M_PI from this, dot product of normalized vectors is equal to cos angle between them... and if you include rightVec dot you get to know the correct direction :)
CCPoint perpendicular = ccpPerp(aLineDir);
float angle = acosf(ccpDot(perpendicular, CCPointMake(0, 1)));
float rightDot = ccpDot(perpendicular, CCPointMake(1, 0));
if (rightDot < 0.0f)
{
angle *= -1;
}
CCPoint prevPoint = center;
CCPoint prevDir = ccp(sinf(0), cosf(0));
for (unsigned int i = 0; i < numberOfSegments; ++i)
{
CCPoint dir = ccp(sinf(angle), cosf(angle));
CCPoint curPoint = ccp(center.x + radius * dir.x, center.y + radius * dir.y);
vertices[i * 9 + 0].pos = center;
vertices[i * 9 + 1].pos = prevPoint;
vertices[i * 9 + 2].pos = curPoint;
//! fill rest of vertex data
for (unsigned int j = 0; j < 9; ++j)
{
vertices[i * 9 + j].z = j < 3 ? 1.0f : 2.0f;
vertices[i * 9 + j].color = color;
}
//! add overdraw
vertices[i * 9 + 3].pos = ccpAdd(prevPoint, ccpMult(prevDir, overdraw));
vertices[i * 9 + 3].color.a = 0;
vertices[i * 9 + 4].pos = prevPoint;
vertices[i * 9 + 5].pos = ccpAdd(curPoint, ccpMult(dir, overdraw));
vertices[i * 9 + 5].color.a = 0;
vertices[i * 9 + 6].pos = prevPoint;
vertices[i * 9 + 7].pos = curPoint;
vertices[i * 9 + 8].pos = ccpAdd(curPoint, ccpMult(dir, overdraw));
vertices[i * 9 + 8].color.a = 0;
prevPoint = curPoint;
prevDir = dir;
angle += anglePerSegment;
}
glVertexAttribPointer(kCCVertexAttrib_Position, 3, GL_FLOAT, GL_FALSE, sizeof(LineVertex), &vertices[0].pos);
glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_FLOAT, GL_FALSE, sizeof(LineVertex), &vertices[0].color);
glDrawArrays(GL_TRIANGLES, 0, numberOfSegments * 9);
free(vertices);
}
float ccpAngleSigned(CCPoint a, CCPoint b)
{
CCPoint a2 = ccpNormalize(a); CCPoint b2 = ccpNormalize(b);
float angle = atan2f(a2.x * b2.y - a2.y * b2.x, ccpDot(a2, b2));
if( fabs(angle) < kCCPointEpsilon ) return 0.f;
return angle;
}
float ccpAngle(const CCPoint& a, const CCPoint& b)
{
float angle = acosf(ccpDot(ccpNormalize(a), ccpNormalize(b)));
if (fabs(angle) < kCCPointEpsilon)
{
return 0.f;
}
return angle;
}
HitTestResult* hitTestStripStrip(StripBodyNode* a, StripBodyNode* b)
{
Point Atop[4];
Point Btop[4];
a->getTops(Atop, Atop + 1, Atop + 2, Atop + 3);
b->getTops(Btop, Btop + 1, Btop + 2, Btop + 3);
int cpcount = 0;
Point cp[12];
bool hit = isRectCrossRect(Atop[0], Atop[1], Atop[2], Atop[3],
Btop[0], Btop[1], Btop[2], Btop[3], &cpcount, cp);
if(hit)
{
if(cpcount < 0)
cpcount = 0;
Point ca = a->getCenter();
float wa = a->getWidth();
float ha = ccpDistance(a->getBegin(), a->getEnd());
Vector2 aa = ccpNormalize(a->getEnd() - a->getBegin());
for(int i = 0; i < 4; i++)
{
if(isPointInRect(Btop[i], ca, wa, ha, aa))
{
cp[cpcount++] = Btop[i];
}
}
// use dot result for comparing directly
// get true distance when receive a minimun dot result
int iMin = 0;
float dMin = 0;
Vector2 direction = a->getEnd() - a->getBegin();
for(int i = 0; i < cpcount; i++)
{
float d = ccpDot(cp[i], direction);
if( i == 0 && d < dMin)
{
dMin = d;
iMin = i;
}
}
dMin /= ccpLength(direction);
return HitTestResult::create(HTRT_CROSS, cp[iMin], dMin);
}
else
{
return HitTestResult::create(HTRT_NONE);
}
}
bool ccpLineIntersect(CCPoint p1, CCPoint p2,
CCPoint p3, CCPoint p4,
float *s, float *t){
CCPoint p13, p43, p21;
float d1343, d4321, d1321, d4343, d2121;
float numer, denom;
p13 = ccpSub(p1, p3);
p43 = ccpSub(p4, p3);
//Roughly equal to zero but with an epsilon deviation for float
//correction
if (ccpFuzzyEqual(p43, CCPointZero, kCCPointEpsilon))
return false;
p21 = ccpSub(p2, p1);
//Roughly equal to zero
if (ccpFuzzyEqual(p21,CCPointZero, kCCPointEpsilon))
return false;
d1343 = ccpDot(p13, p43);
d4321 = ccpDot(p43, p21);
d1321 = ccpDot(p13, p21);
d4343 = ccpDot(p43, p43);
d2121 = ccpDot(p21, p21);
denom = d2121 * d4343 - d4321 * d4321;
if (fabs(denom) < kCCPointEpsilon)
return false;
numer = d1343 * d4321 - d1321 * d4343;
*s = numer / denom;
*t = (d1343 + d4321 *(*s)) / d4343;
return true;
}
void Canon ::shoot(MyObject* m_enemy, float dt)
{
CCPoint totarget = ccpSub(m_enemy->m_pos, this->m_pos);
float a = ccpDot(m_enemy->m_velocity,m_enemy->m_velocity) - (m_maxVelocity *m_maxVelocity);
float b = 2 * ccpDot(m_enemy->m_velocity, totarget);
float c = ccpDot(totarget,totarget);
float p = -b / (2 * a);
float q = (float)sqrt((b * b) - 4 * a * c) / (2 * a);
float t1 = p - q;
float t2 = p + q;
float t;
if (t1 > t2 && t2 > 0)
{
t = t2;
}
else
{
t = t1;
}
CCPoint aimSpot = ccpAdd(m_enemy->m_pos ,ccpMult(m_enemy->m_velocity,t)); //position of target in future after t seconds
CCPoint BoomPath = ccpSub (aimSpot , m_pos );
float timeToImpact = ccpLength(BoomPath) / m_maxVelocity/60; //speed must be in units per second
m_BoomManager->addBoom(new Boom(layer, m_pos,timeToImpact,m_maxVelocity));
for (int i =0; i < m_BoomManager->getListBoom().size(); i++)
{
m_BoomManager->getBoom(i)->setTarget(aimSpot);
m_BoomManager->getBoom(i)->m_Active = true;
}
}
CCPoint calculateCosASinAOfVec1ToVec2(const CCPoint&vec1,const CCPoint&vec2)
//return {cos(vec1,vec2),sin(vec1,vec2)}
{
float cosA=ccpDot(vec1, vec2)/(ccpLength(vec1)*ccpLength(vec2));
float signalOfSinA;
{
float _vec1[3]={vec1.x,vec1.y,0};
float _vec2[3]={vec2.x,vec2.y,0};
float _rs[3];
__cross(_vec1, _vec2, _rs);
if (_rs[2]==0) {
signalOfSinA=0;
}else if(_rs[2]>0){
signalOfSinA=1;
}else{
signalOfSinA=-1;
}
}
float sinA=signalOfSinA*sqrtf(MAX(0,1-cosA*cosA));
return CCPoint(cosA,sinA);
}
NS_CC_BEGIN
void ccVertexLineToPolygon(DPoint *points, float stroke, ccVertex2F *vertices, unsigned int offset, unsigned int nuPoints)
{
nuPoints += offset;
if(nuPoints<=1) return;
stroke *= 0.5f;
unsigned int idx;
unsigned int nuPointsMinus = nuPoints-1;
for(unsigned int i = offset; i<nuPoints; i++)
{
idx = i*2;
DPoint p1 = points[i];
DPoint perpVector;
if(i == 0)
perpVector = ccpPerp(ccpNormalize(ccpSub(p1, points[i+1])));
else if(i == nuPointsMinus)
perpVector = ccpPerp(ccpNormalize(ccpSub(points[i-1], p1)));
else
{
DPoint p2 = points[i+1];
DPoint p0 = points[i-1];
DPoint p2p1 = ccpNormalize(ccpSub(p2, p1));
DPoint p0p1 = ccpNormalize(ccpSub(p0, p1));
// Calculate angle between vectors
float angle = acosf(ccpDot(p2p1, p0p1));
if(angle < CC_DEGREES_TO_RADIANS(70))
perpVector = ccpPerp(ccpNormalize(ccpMidpoint(p2p1, p0p1)));
else if(angle < CC_DEGREES_TO_RADIANS(170))
perpVector = ccpNormalize(ccpMidpoint(p2p1, p0p1));
else
perpVector = ccpPerp(ccpNormalize(ccpSub(p2, p0)));
}
perpVector = ccpMult(perpVector, stroke);
vertices[idx] = vertex2(p1.x+perpVector.x, p1.y+perpVector.y);
vertices[idx+1] = vertex2(p1.x-perpVector.x, p1.y-perpVector.y);
}
// Validate vertexes
offset = (offset==0) ? 0 : offset-1;
for(unsigned int i = offset; i<nuPointsMinus; i++)
{
idx = i*2;
const unsigned int idx1 = idx+2;
ccVertex2F p1 = vertices[idx];
ccVertex2F p2 = vertices[idx+1];
ccVertex2F p3 = vertices[idx1];
ccVertex2F p4 = vertices[idx1+1];
float s;
//BOOL fixVertex = !ccpLineIntersect(DPoint(p1.x, p1.y), DPoint(p4.x, p4.y), DPoint(p2.x, p2.y), DPoint(p3.x, p3.y), &s, &t);
bool fixVertex = !ccVertexLineIntersect(p1.x, p1.y, p4.x, p4.y, p2.x, p2.y, p3.x, p3.y, &s);
if(!fixVertex)
if (s<0.0f || s>1.0f)
fixVertex = true;
if(fixVertex)
{
vertices[idx1] = p4;
vertices[idx1+1] = p3;
}
}
}
float ccpAngle(CCPoint a, CCPoint b)
{
float angle = acosf(ccpDot(ccpNormalize(a), ccpNormalize(b)));
if( fabs(angle) < kCCPointEpsilon ) return 0.f;
return angle;
}
float CCRibbon::sideOfLine(CCPoint p, CCPoint l1, CCPoint l2)
{
CCPoint vp = ccpPerp(ccpSub(l1, l2));
CCPoint vx = ccpSub(p, l1);
return ccpDot(vx, vp);
}
bool ElfEffectAnimHandler::Entered()
{
ElfBaseState::Entered();
m_pEffect = NULL;
m_continueTime = 0.0f;
if(m_pSkill->effectID > 0)
{
if(m_pSkill->effectSoundID > 0)
{
GameAudioManager::sharedManager()->playEffect(m_pSkill->effectSoundID, false);
}
m_pEffect = GetEffect(m_pSkill->effectID);
Push(new MagicCheckerHandler(new MagicCheckerEvt(m_pRole, m_actionId, m_pEffect)));
ATTACH_POINT_TYPE apt = kType_SHOOT_HOR;
switch(GetAnimDir())
{
case DIRECTION_UP:
apt = kType_SHOOT_UP;
break;
case DIRECTION_BOTTOM:
apt = kType_SHOOT_DOWN;
break;
case DIRECTION_LEFT:
case DIRECTION_RIGHT:
apt = kType_SHOOT_HOR;
break;
default:
apt = kType_SHOOT_HOR;
break;
}
m_dir = m_attackDir;
m_displacement = m_attackDisplacement;
if(m_pSkill->type != FAIRY_SKILL_INFO::E_BUFFER)
{
if(!m_pSkill->bLock)
{
m_pEffect->setPosition(ccp(0.0f, 0.0f));
m_initDir.setPoint(0.0f, 1.0f);
float degree = acosf(ccpDot(m_initDir, m_dir)) / 3.1415926 * 180.0f;
if(m_dir.x < 0)
degree = -degree;
m_pEffect->getRoot()->setRotation(degree);
}
}
m_speed = m_pSkill->longDistanceEffectSpeed;
CCPoint pos = m_pElf->getAttachPoint(apt);
switch(m_pSkill->aim)
{
case FAIRY_SKILL_INFO::E_HERO:
{
CCPoint pos = m_pRole->getPosition();
pos.y += 16.0f;
m_pEffect->setPosition(pos);
m_continueTime = m_pSkill->continueTime;
}
break;
case FAIRY_SKILL_INFO::E_FULL_SCREEN:
{
CCPoint cameraOffset = CCDirector::sharedDirector()->getLevelRenderCameraOffset();
CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
m_pEffect->setPosition(ccp(cameraOffset.x + visibleSize.width / 2, cameraOffset.y + visibleSize.height / 2));
}
break;
default:
m_pEffect->setPosition( m_pElf->getPosition() + pos );
break;
}
if(m_speed <= 0.0f && m_displacement > 0.0f)
{
m_pEffect->SetAnim(kType_Play,1,false);
}
else
{
m_pEffect->SetAnim(kType_Play,1,true);
}
if(m_pEffect->getParent() != LevelManager::sShareInstance()->getCurrentLevelLayer()->getObjectLayer())
{
LevelManager::sShareInstance()->getCurrentLevelLayer()->getObjectLayer()->addChild(m_pEffect, LevelLayer::sCalcZorder(m_pEffect->getPosition()));
}
else
{
m_pEffect->setZOrder(LevelLayer::sCalcZorder(m_pEffect->getPosition()));
}
}
return true;
}