void Display::DrawBillboards()
{
BillboardDisplayListRecord* temp = NULL;
glDepthMask(GL_FALSE);
bool lightingEnable = (glIsEnabled(GL_LIGHTING) == GL_TRUE);
glDisable(GL_LIGHTING);
if (!BillboardDisplayList.empty())
BillboardDisplayList.sort(BubbleSortDistance);
for (std::list<BillboardDisplayListRecord*>::iterator itr = BillboardDisplayList.begin(); itr != BillboardDisplayList.end();)
{
temp = (*itr);
if (!temp)
{
itr = BillboardDisplayList.erase(itr);
continue;
}
if (temp->remove)
{
if (temp->displayList)
glDeleteLists(temp->displayList, temp->displayListSize);
if (temp->AnimTicket)
sAnimator->DestroyAnimTicket(temp->AnimTicket);
if (temp)
delete temp;
itr = BillboardDisplayList.erase(itr);
continue;
}
// Zabezpeceni proti vykreslovani billboardu, ktere jsou od nas vzdalene vice jak 14 jednotek
// - Zvysuje vykon
if (pythagoras_c(fabs(temp->x-fabs(m_targetX)), fabs(temp->z-fabs(m_targetZ))) > 14.0f)
{
++itr;
continue;
}
glLoadIdentity();
glColor3ub(255, 255, 255);
AdjustViewToTarget();
if (temp->AnimTicket)
BindTexture(sAnimator->GetActualTexture(temp->AnimTicket));
else
BindTexture(temp->textureId);
// Pruhledne objekty potrebuji mit zapnuty mod pro blending a mod one minus src alpha pro
// spravne vykresleni pruhlednosti
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Nechat depth test pro ted zapnuty, zpusobuje nepruhlednost
// vykreslenych spritu vuci jinym spritum
//glDisable(GL_DEPTH_TEST);
// TODO: blending zvlast kanalu
// asi useless
//glColor4f(1,1,1,0.85);
glTranslatef(temp->x, temp->y, temp->z);
if (temp->billboard_y)
glRotatef(90.0f-m_angleY, 0.0f, 1.0f, 0.0f);
if (temp->billboard_x)
glRotatef(m_angleX, 0.0f, 0.0f, -1.0f);
if (temp->displayList > 0)
{
glCallList(temp->displayList);
}
else
{
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(1.0f, 1.0f); glVertex3f(0, 0 , (-temp->scale_x/2));
glTexCoord2f(0.0f, 1.0f); glVertex3f(0, 0 , ( temp->scale_x/2));
glTexCoord2f(1.0f, 0.0f); glVertex3f(0, temp->scale_y , (-temp->scale_x/2));
glTexCoord2f(0.0f, 0.0f); glVertex3f(0, temp->scale_y , ( temp->scale_x/2));
glEnd();
}
// Nezapomeneme vypnout blending, jen jako slusnacci
glDisable(GL_BLEND);
// Netreba, viz. komentar vyse
//glEnable(GL_DEPTH_TEST);
++itr;
}
glDepthMask(GL_TRUE);
if (lightingEnable)
glEnable(GL_LIGHTING);
glLoadIdentity();
glRotatef(m_angleX, 1.0f, 0.0f, 0.0f);
glRotatef(m_angleY, 0.0f, -1.0f, 0.0f);
glTranslatef(m_viewX, m_viewY, m_viewZ);
}
bool ParticleEmitter::Update(const clock_t diff)
{
//Nejdrive pricist k celkovemu casu ten ubehly (milisekundy)
totaltime += diff;
//Pak porovnat celkovy cas, zdali uz ubehnul maximalni cas
if(totaltime >= time)
return false; //--> odstranit emitter z listu pro update
//TODO: dodelat "dojizdeni" emitteru - cas po ktery uz nebudou vydavany castice, ale
//stare castice se budou stale pohybovat, az zmizi. Po tu dobu vracet stale true!
uint32 newparticlescount = 10;
//Zde update vsech castic a emit novych
while(newparticlescount > 0)
{
if (Particles.size() < velocity-1)
{
if (nextParticleCountdown < diff)
{
//vytvorit novou castici
Particle* pNew = new Particle;
//a priradit ji veskere hodnoty
//velice neuniverzalni a ne prilis profesionalni postup zde
pNew->sx = x;
pNew->sz = z;
if (dirangleh < PI/4 || dirangleh > 7*PI/4 || (dirangleh > 3*PI/4 && dirangleh < 5*PI/4) )
pNew->sz = z+frand(square1,square3);
else
pNew->sx = x+frand(square1,square3);
pNew->sy = y+frand(square2,square4);
//az sem
pNew->modelId = modelId;
pNew->actTime = 0;
pNew->destrange = frand(minrange,maxrange);
pNew->hangle = frand(dirangleh-angleh/2,dirangleh+angleh/2);
pNew->vangle = frand(diranglev-anglev/2,diranglev+anglev/2);
pNew->modelSize = modelSize+frand(min(0,sizevar),max(0,sizevar));
float rotate = 0.0f;
if (flags & EMIT_FLAG_RANDOM_ROTATE)
rotate = frand(0,PI);
//pridat ji do display listu a ulozit pointer
pNew->pRec = gDisplay.DrawModel(x,y,z,modelId, ANIM_IDLE,false,pNew->modelSize,rotate);
Particles.push_back(pNew);
nextParticleCountdown = density;
} else nextParticleCountdown -= diff;
}
--newparticlescount;
}
Particle* temp;
// Projit particles a rozpohybovat je
for (std::list<Particle*>::iterator itr = Particles.begin(); itr != Particles.end(); ++itr)
{
temp = *itr;
//pricist cas ktery ubehl [ms]
temp->actTime += diff;
if (!temp->pRec)
continue;
//speed [pocet tisicin rozmeru za 1 sekundu]
temp->pRec->x = temp->sx+(float(temp->actTime)/1000)*(float(speed)/1000)*cos(temp->hangle);
temp->pRec->y = temp->sy+(float(temp->actTime)/1000)*(float(speed)/1000)*sin(temp->vangle);
temp->pRec->z = temp->sz+(float(temp->actTime)/1000)*(float(speed)/1000)*sin(temp->hangle);
//pokud castice urazila drahu jakou ma urazit, vymazeme ji
if (pythagoras_c(pythagoras_c(temp->pRec->x-temp->sx,temp->pRec->z-temp->sz),temp->pRec->y-temp->sy) > temp->destrange)
{
temp->pRec->remove = true;
itr = Particles.erase(itr);
if (itr == Particles.end())
break;
if (itr != Particles.begin())
--itr;
continue;
}
}
return true; //false pokud emitter dosahne maximalniho casu pusobeni nebo je jinak odstranen
}
