xmario/xSDL/xSprite.cpp

#include "xSprite.h"

/** clean SDL objects */
xSprite::~xSprite(){
	_mutex.try_lock();
	SDL_FreeSurface( _surface );
	_mutex.unlock();
}

/** empty sprite */
xSprite::xSprite(){
	_type = "basic";
}

/** color sprite */
xSprite::xSprite(const int rgba[]){
	_type = "basic";
	this->setSurface(rgba);
}

/** image sprite */
xSprite::xSprite(const char *url){
	_type = "basic";

	this->setSurface(url);
}

/** texture copy sprite */
xSprite::xSprite(SDL_Surface *s){
	_type = "basic";
	this->setSurface(s);
}

/** update sprite to rhb color */
void xSprite::setSurface(const int rgba[]){
	_mutex.try_lock();
	if( _surface != NULL ){
		SDL_FreeSurface( _surface );
		_surface = NULL;
	}

	_surface = SDL_CreateRGBSurface(0, 0, 0, 32, rgba[0], rgba[1], rgba[2], rgba[3]);

	// On cree la texture a partir de la surface
	// _surface = SDL_CreateTextureFromSurface(_manager->renderer(), surf);
	if( _surface == NULL ) {
		throw runtime_error("[xSprite] setSurface(rgba) -> NULL surface");
	}
	_mutex.unlock();
}



/** update sprite to image */
void xSprite::setSurface(const char *url){
	_mutex.try_lock();
	if( _surface != NULL ){
		SDL_FreeSurface( _surface );
		_surface = NULL;
	}

	_surface = IMG_Load(url);

	if( _surface == NULL ) {
		throw runtime_error("[xSprite] setSurface(url) -> NULL surface");
	}
	_mutex.unlock();
}

/* [SETTEXTURE] Modification de la texture texture
=========================================================*/
void xSprite::setSurface(SDL_Surface *s){
	_mutex.try_lock();
	if( _surface != NULL ){
		SDL_FreeSurface( _surface );
		_surface = NULL;
	}

	_surface = s;

	if( _surface == NULL ) {
		throw runtime_error("[xSprite] setSurface(surface) -> NULL surface");
	}

	_mutex.unlock();
}

/** move sprite with a (x,y) velocity
 * - int[0]: new
 * - int[1]: can move on y
 */
// bool* xSprite::move(double xSpeed, double ySpeed){
// 	_mutex.try_lock();

// 	bool result[2] = {false, false};

// 	/* logic variables */
// 	int incrx          = x;
// 	int incry          = y;
// 	bool moveFasterOnY = abs(x) <= abs(y);

// 	int signofx = (x==0) ? 0 : x / abs(x);
// 	int signofy = (y==0) ? 0 : y / abs(y);

// 	// while velocity not null
// 	while( incrx != 0 || incry != 0 ){

// 		result[0] = incrx;
// 		result[1] = incry;

// 		/* (3) Si on peut aller a la destination */
// 		// if( !_manager->hit(this, incrx, incry) ){
// 		// 	_dst.x += incrx;
// 		// 	_dst.y += incry;

// 		// 	// cerr << ">>> not locked <<<" << endl;

// 		// 	result[0] = incrx;
// 		// 	result[1] = incry;

// 		// 	_mutex.unlock();
// 		// 	return result;
// 		// }



// 		/* (4) Sinon, on decremente les deplacements 'alternativement' */
// 		if( moveFasterOnY ){                      // Si on a plus de mouvement horizontal
// 			if( signofx != 0 && incrx != 0 )      // si la vel. sur x n'est pas nulle
// 				incrx -= signofx;                 // on diminue la vel. sur x
// 			else if( signofy != 0 && incry != 0 ) // sinon si vel. sur y n'est pas nulle
// 				incry -= signofy;                 // on diminue la vel. sur y
// 			else                                  // sinon, velocite nulle
// 				return result;                    // On arrete de chercher

// 		}else{                                    // Si on a plus de mouvement vertical
// 			if( signofy != 0 && incry != 0 )      // si la vel. sur y n'est pas nulle
// 				incry -= signofy;                 // on diminue la vel. sur y
// 			else if( signofx != 0 && incrx != 0 ) // sinon si vel. sur x n'est pas nulle
// 				incrx -= signofx;                 // on diminue la vel. sur x
// 			else                                  // sinon, velocite nulle
// 				return result;                    // On arrete de chercher
// 		}

// 		// if( !_manager->hit(this, 0, 1) ){
// 		// 	cerr << "locked from (" << _dst.x << ", " << _dst.y << ") to (" << incrx << ", " << incry << ")" << endl;
// 		// }
// 	}

// 	// retour
// 	_mutex.unlock();
// 	return result;
// }

/** get/set sprite type */
string xSprite::getType(){ return _type; }
void xSprite::setType(string newtype){ _type = newtype; }

/** set default dimensions */
void xSprite::dimensions(){
	_mutex.try_lock();
	/* extract surface lengths*/
	int w = _surface->w;
	int h = _surface->h;

	_dst = (SDL_Rect){0, 0, w, h};
	_src = (SDL_Rect){0, 0, w, h};
	_mutex.unlock();
}

/** set surface dimensions */
void xSprite::dimensions(SDL_Rect r){
	_mutex.try_lock();
	/* extract surface lengths */
	int w = _surface->w;
	int h = _surface->h;
	_src = (SDL_Rect){0, 0, w, h};

	/* store destination dimensions */
	_dst = (SDL_Rect){r.x, r.y, r.w, r.h};
	_mutex.unlock();
}

/** set surface dimensions + clip */
void xSprite::dimensions(SDL_Rect r, SDL_Rect clip){
	_mutex.try_lock();
	_src = (SDL_Rect){clip.x, clip.y, clip.w, clip.h};
	_dst = (SDL_Rect){r.x, r.y, r.w, r.h};
	_mutex.unlock();
}

/** returns the surface */
SDL_Surface *xSprite::surface(){ return _surface; }

/** return destination dimensions */
SDL_Rect *xSprite::dst(){ return &_dst; }

/** return source dimensions */
SDL_Rect *xSprite::src(){ return &_src; }


/** draws to renderer */
void xSprite::draw(SDL_Renderer* renderer){
	_mutex.try_lock();
	SDL_RenderCopy(
		renderer,
		SDL_CreateTextureFromSurface(renderer, this->surface()),
		this->src(),
		this->dst()
	);
	_mutex.unlock();
}