//
// Shoot
//
void Game::Shoot()
{
static Uint32 lShot = SDL_GetTicks() - RELOAD_TIME;
static list<SprDraw> killableSprites;
static list<SprDraw>::iterator ksIt;
static float distance, a, b, c, d;
if(SDL_GetTicks() - lShot > RELOAD_TIME)
{
list<Sprite *>::iterator it;
Sprite *spr;
if(player->GetWeapon() == 0)
{
player->DecrementAmmo(1);
if(player->GetAmmo() == 0)
{
AddMessage("Out of ammo!");
return;
}
}
else if(player->GetWeapon() == 1)
{
player->DecrementMGAmmo(1);
if(player->GetMGAmmo() == 0)
{
AddMessage("Out of ammo!");
return;
}
}
fireStart = SDL_GetTicks();
fireVisible = true;
if(player->GetWeapon()==0)
framework->PlaySound(shootSnd);
else if(player->GetWeapon()==1)
framework->PlaySound(MGshootSnd);
for(it = sprites.begin(); it != sprites.end(); it++)
{
spr = *it;
if(spr->GetLookingAt() && spr->GetId() == ET_FURBY)
{
SprDraw ks;
ks.original = spr;
ks.x = spr->GetPosX();
ks.y = spr->GetPosY();
ks.image = spr->GetImage();
a = raycaster->GetPosX() - ks.x;
b = raycaster->GetPosY() - ks.y;
distance = sqrt(a*a+b*b);
ks.distance = distance;
killableSprites.push_back(ks);
}
if(spr->GetLookingAt() && spr->GetId() == ET_SKULL)
{
SprDraw ks;
ks.original = spr;
ks.x = spr->GetPosX();
ks.y = spr->GetPosY();
ks.image = spr->GetImage();
c = raycaster->GetPosX() - ks.x;
d = raycaster->GetPosY() - ks.y;
distance = sqrt(a*a+b*b);
ks.distance = distance;
killableSprites.push_back(ks);
}
}
if(!killableSprites.empty())
{
killableSprites.sort();
killableSprites.reverse();
ksIt = killableSprites.begin();
Furby *thisFurby = (Furby *)(*ksIt).original;
Skull *thisSkull = (Skull*)(*ksIt).original;
if(!thisFurby->IsDead()&&thisFurby->GetId()==ET_FURBY)
{
thisFurby->NextImage();
framework->PlaySound(EnemyHurt);
}
else if(thisFurby->IsDead() && thisFurby->GetId()==ET_FURBY)
{
SDL_Surface *daFrames[NUM_DEATH_ANIM_FRAMES];
daFrames[0] = spriteImgs[11];
daFrames[1] = spriteImgs[12];
daFrames[2] = spriteImgs[13];
DeathAnimation *deathAnim = new DeathAnimation(daFrames, (*ksIt).original->GetPosX(), (*ksIt).original->GetPosY());
sprites.push_back(deathAnim);
delete (*ksIt).original;
sprites.remove((*ksIt).original);
framework->PlaySound(killSnd);
AddMessage("You killed a furby!");
}
if(!thisSkull->IsDead() && thisSkull->GetId()==ET_SKULL)
{
thisSkull->NextImage();
framework->PlaySound(EnemyHurt);
}
else if(thisSkull->IsDead() && thisSkull->GetId()==ET_SKULL)
{
SDL_Surface *skdaFrames[NUM_DEATH_ANIM_FRAMES];
skdaFrames[0] = spriteImgs[17];
skdaFrames[1] = spriteImgs[18];
skdaFrames[2] = spriteImgs[19];
SKDeathAnimation *skdeathAnim = new SKDeathAnimation(skdaFrames, (*ksIt).original->GetPosX(), (*ksIt).original->GetPosY());
sprites.push_back(skdeathAnim);
delete (*ksIt).original;
sprites.remove((*ksIt).original);
framework->PlaySound(killSnd);
AddMessage("You killed a skull!");
}
//}
killableSprites.clear();
}
lShot = SDL_GetTicks();
}
}
//
// DrawSprites
//
// Note: My version of the calculations for the sprite distance and x-coord using only trigonometric functions
// was giving pretty ugly results. Of course it was working, but in small rooms you could see some wrong clipping
// and other messy things. Therefore I replaced these calculations by others using vectors and matrizes in order
// to get the right values for the x-coord of the projected sprite and the distance for correct clipping. And
// I have to say that this solution is very much based on what Lode Vandevenne explains in his raycasting tutorial.
//
void Raycaster::DrawSprites()
{
static SDL_Rect sprRect;
int i, j, startX, startY;
float distance, height;
float a, b;
list<Sprite *>::iterator sprIt;
list<SprDraw>::iterator it;
SprDraw curSpr;
Sprite *anotherSpr;
Uint32 color;
bool partlyDrawn = false;
float sprX, sprY;
float yStepWidth, xStepWidth;
//float beta;
float inverse, transX, transY;
// Put sprites into list for sorting
for(sprIt = sprites->begin(); sprIt != sprites->end(); sprIt++)
{
anotherSpr = (*sprIt);
SprDraw spr;
spr.x = anotherSpr->GetPosX();
spr.y = anotherSpr->GetPosY();
spr.original = anotherSpr;
a = spr.x - posX;
b = spr.y - posY;
distance = sqrt(a*a+b*b);
spr.image = anotherSpr->GetImage();
spr.distance = distance;
sprsToDraw.push_back(spr);
}
// Sort from far away to near
sprsToDraw.sort();
// Draw them from the back
for(it = sprsToDraw.begin(); it != sprsToDraw.end(); it++)
{
// Draw sprite
curSpr = *it;
a = curSpr.x - posX;
b = curSpr.y - posY;
inverse = 1.0f / (camPlane.x * lookDir.y - lookDir.x * camPlane.y);
transX = inverse * (lookDir.y * a - lookDir.x * b);
transY = inverse * (-camPlane.y * a + camPlane.x * b);
height = DistToWallHeight(transY) * 1.0f;
startX = (int)(-height / 2 + (target->w / 2) * (1 + transX / transY));
startY = (target->h - (int)height) / 2;
sprX = sprY = 0;
xStepWidth = (float)SPRITE_WIDTH / (float)height;
yStepWidth = (float)SPRITE_HEIGHT / (float)height;
if(startX + height < 0 || startX >= target->w || curSpr.distance < SPR_NEAR_CLIP_DIST)
continue;
partlyDrawn = false;
// Horizontal
for(i=0; i<height; i++)
{
if(startX + i < 0 || startX + i >= target->w || transY > zBuffer[i+startX])
{
sprX += xStepWidth;
continue;
}
// Vertical
for(j=0; j<height; j++)
{
if(!badQuality || j % 4 == 0)
color = framework->GetPixelColor(curSpr.image, (int)sprX, (int)sprY);
if(color != framework->GetMagenta())
partlyDrawn |= framework->DrawPixel(startX + i, startY + j, color);
sprY += yStepWidth;
}
sprY = 0;
sprX += xStepWidth;
}
sprRect.w = (int)height;
sprRect.x = startX;
sprRect.h = (int)height;
sprRect.y = startY;
if(partlyDrawn && framework->Coll(&sprRect, crosshairRect))
curSpr.original->SetLookingAt(true);
else
curSpr.original->SetLookingAt(false);
if(curSpr.original->GetId() == ET_FURBY)//||!curSpr.original->GetId() == ET_SKULL)
{
Furby *fb = (Furby *)curSpr.original;
fb->SetVisible(partlyDrawn);
}
if(curSpr.original->GetId() == ET_SKULL)//||!curSpr.original->GetId() == ET_FURBY);
{
Skull *sk = (Skull *)curSpr.original;
sk->SetVisible(partlyDrawn);
}
}
sprsToDraw.clear();
}