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#include "CSprite.h"
CSprite::CSprite(void)
{
mOldX = 0;
mOldY = 0;
mFrame = 0;
mLastUpdate = 0;
mDrawn = false;
mParticle = new CParticle(0, 0, 0, 0, 0, 0);
mStartFrame = 0;
mEndFrame = 0;
mIsLooping = false;
}
CSprite::CSprite(CSpriteAnimation *aSpriteAnimation, CSurface *aScreen)
{
mOldX = 0;
mOldY = 0;
mFrame = 0;
mLastUpdate = 0;
mDrawn = false;
mParticle = new CParticle(0, 0, 0, 0, 0, 0);
mStartFrame = 0;
mEndFrame = 0;
mIsLooping = false;
mSpriteAnimation = aSpriteAnimation;
mScreen = aScreen;
if (mSpriteAnimation != NULL)
{
// Create the background image.
mBackground = new CSurface(mSpriteAnimation->getWidth(), mSpriteAnimation->getHeight());
if (mSpriteAnimation->getNumFrames() > 1)
mAnimating = true;
else
mAnimating = false;
}
else
{
fprintf(stderr, "Sprite constructor failed!\n");
fprintf(stderr, "Sprite animation is not built!\n");
}
}
CSprite::~CSprite(void)
{
destroy();
}
void CSprite::destroy(void)
{
if (mBackground != NULL)
{
mBackground->destroy();
mBackground = NULL;
}
if (mParticle != NULL)
{
delete mParticle;
mParticle = NULL;
}
}
// Restore the background.
void CSprite::restoreBackground(void)
{
// If the sprite has been drawn once before, then we can clear the screen.
// If we do not do this, the first time the backgrouns is restored and this results in a black rectangle.
if (mDrawn)
{
CSurface::drawImage(mScreen, mBackground, mOldX, mOldY);
}
}
// Save the background.
void CSprite::saveBackground(void)
{
CSurface::drawImage(mBackground, mScreen, 0, 0, getIntX()+mOffsetX, getIntY()+mOffsetY, mSpriteAnimation->getWidth(), mSpriteAnimation->getHeight());
mOldX = getIntX()+mOffsetX;
mOldY = getIntY()+mOffsetY;
}
// Draw the sprite in the screen.
void CSprite::draw(void)
{
CSurface::drawImage(mScreen, mSpriteAnimation->getFrame(mFrame)->getImage(), getIntX()+mOffsetX, getIntY()+mOffsetY);
if (!mDrawn)
mDrawn = true;
}
void CSprite::update(void)
{
if (mAnimating)
{
if (mLastUpdate + mSpriteAnimation->getFrame(mFrame)->getFrameTime() < SDL_GetTicks())
{
mFrame++;
if (mFrame > mEndFrame)
{
if (mIsLooping)
{
mFrame = mStartFrame;
mAnimating = true;
}
else
{
mFrame = mEndFrame;
mAnimating = false;
}
}
mLastUpdate = SDL_GetTicks();
}
}
mParticle->update();
// fprintf(stdout, "mAnimating = %d.\n", mAnimating);
// fprintf(stdout, "mFrame = %d.\n", mFrame);
}
void CSprite::render(void)
{
restoreBackground();
saveBackground();
draw();
}
int CSprite::getIntX(void)
{
return (int) floor(mParticle->getX());
}
int CSprite::getIntY(void)
{
return (int) floor(mParticle->getY());
}
void CSprite::setXVel(float aXVel)
{
mParticle->setXVel(aXVel);
}
void CSprite::setYVel(float aYVel)
{
mParticle->setYVel(aYVel);
}
void CSprite::setAnim(int aStartFrame, int aEndFrame, bool aIsLooping)
{
if (aStartFrame == aEndFrame)
mAnimating = false;
else
mAnimating = true;
mIsLooping = aIsLooping;
mStartFrame = aStartFrame;
mEndFrame = aEndFrame;
mFrame = mStartFrame;
mLastUpdate = SDL_GetTicks();
}
void CSprite::setRenderOffsets(int aOffsetX, int aOffsetY)
{
mOffsetX = aOffsetX;
mOffsetY = aOffsetY;
}
void CSprite::setXY(int aX, int aY)
{
mParticle->setXY(aX, aY);
}
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