111 lines
2.3 KiB
C++
111 lines
2.3 KiB
C++
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/* [DESTRUCTUR] Destruction de l'animation
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=========================================================*/
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xSpriteAnimation::~xSpriteAnimation(){
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SDL_DestroyTexture( _texture );
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_manager = NULL;
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_texture = NULL;
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}
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/* [CONSTRUCTOR] Construction de l'animation (chargement)
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=========================================================*/
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xSpriteAnimation::xSpriteAnimation(xManager *manager, const char *url, SDL_Rect viewport){
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/* (1) Definition des attributs */
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_manager = manager;
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_texture = NULL;
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_clip = viewport;
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/* (2) On charge le spritesheet */
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_texture = IMG_LoadTexture( _manager->renderer(), url );
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// Gestion erreur
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if( _texture == NULL )
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return;
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}
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/* [ADDFRAME] Ajout d'une frame d'animation
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=========================================================*/
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void xSpriteAnimation::addFrame(float x, float y){
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// On ajoute une frame
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_frames.push_back( (SDL_Rect){
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(int) x*_clip.w,
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(int) y*_clip.h,
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(int) _clip.w,
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(int) _clip.h
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});
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}
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/* [TRHEAD] Process de l'animation
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=========================================================*/
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void xSpriteAnimationProcess(xSpriteAnimation *xSA, int t, int flags){
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int length = xSA->_frames.size();
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int timer = 0;
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int step = 1;
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int start = 0;
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int stop = length;
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while( flags&SPRITE_ANIM_INFINITE ){
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/* (1) Pour chaque sprite */
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for( int i = start ; i != stop ; i+=step ){
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timer = SDL_GetTicks();
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// On met a jour la frame
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xSA->_frame = xSA->_frames[i];
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if( SDL_GetTicks()-timer < t )
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SDL_Delay( t - (SDL_GetTicks()-timer) );
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}
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/* (2) Gestion des flags */
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// SPRITE_ANIM_REVERSE
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if( flags&SPRITE_ANIM_REVERSE ){
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step *= -1;
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start = (step==1) ? 0 : length-1;
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stop = (step==1) ? length-1 : 0;
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}
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}
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/* (n) On termine le thread */
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return;
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}
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/* [START] Ajoute l'animation au rendu
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=========================================================*/
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void xSpriteAnimation::start(int t, int flags){
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/* (1) On ajoute le sprite au rendu */
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_manager->push(_texture, &_frame, &_clip);
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/* (2) On lance l'animation */
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_animation = new thread(xSpriteAnimationProcess, this, t, flags);
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// On attends pas le thread
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_animation->detach();
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}
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/* [STOP] Arrete l'animation
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=========================================================*/
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void xSpriteAnimation::stop(){
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delete _animation;
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}
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