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#include<cstdlib> #include<SDL/SDL.h> #include<SDL_image.h> #include<iostream> #include<memory> int main(int, char **) { SDL_Surface *Screen=nullptr; SDL_Surface *Image=nullptr; SDL_Rect *Image_Rect=new SDL_Rect; SDL_Rect *Screen_Rect=new SDL_Rect; SDL_Rect *BackGround=new SDL_Rect; SDL_Event *Event=new SDL_Event; bool Run=true; atexit(SDL_Quit); if(SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER)<0) { std::cerr << "SDL konnte nicht initialisiert werden: " << SDL_GetError() << std::endl; } Screen=SDL_SetVideoMode(1280, 720, 32, SDL_HWSURFACE|SDL_DOUBLEBUF|SDL_FULLSCREEN); if(!Screen) { std::cerr << "VideoMode konnte nicht gesetzt werden: " << SDL_GetError() << std::endl; } BackGround->x=0; BackGround->y=0; Image=IMG_Load("Bilder/face-smile.png"); if(!Image) { std::cerr << "Bild konnte nicht geladen werden: " << SDL_GetError() << std::endl; exit(EXIT_FAILURE); } Image_Rect->w=Image->w; Image_Rect->h=Image->h; Image_Rect->x=0; Image_Rect->y=0; while(Run) { SDL_PollEvent(Event); switch(Event->type) { case SDL_KEYDOWN: switch(static_cast<int>(Event->key.keysym.sym)) { case SDLK_ESCAPE: { Run=false; } break; } break; case SDL_MOUSEBUTTONDOWN:; { if(Event->type==SDL_MOUSEMOTION && Event->button.x>=Image_Rect->x && Event->button.x<=Image->w && Event->button.y>=Image_Rect->y && Event->button.y<=Image_Rect->h+Image_Rect->y) { Image_Rect->x+=Event->motion.xrel; Image_Rect->y+=Event->motion.yrel; } } default:; } Screen_Rect->w=Image->w; Screen_Rect->h=Image->h; BackGround->w=Screen->w; BackGround->h=Screen->h; SDL_FillRect(Screen, BackGround, 4294967295); SDL_BlitSurface(Image, 0, Screen, Image_Rect); SDL_Flip(Screen); } delete Event; delete Image_Rect; delete Screen_Rect; delete BackGround; SDL_Quit(); SDL_FreeSurface(Image); SDL_FreeSurface(Screen); } |
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... Event->button.x<=Image->w ... // vs. ... Event->button.y<=Image_Rect->h+Image_Rect->y |
Ich hab jetzt button durch motion ersetzt.
Funktioniert aber immer noch nicht.
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if(Event->type == SDL_MOUSEMOTION && Event->button.x >= Image_Rect->x && Event->button.x <= Image->w /* <-- da fehlt doch noch was! */ && Event->button.y >= Image_Rect->y && Event->button.y <= Image_Rect->h + Image_Rect->y) |
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#include<cstdlib> #include<SDL/SDL.h> #include<SDL_image.h> #include<iostream> #include<memory> int main(int, char **) { SDL_Surface *Screen=nullptr; SDL_Surface *Image=nullptr; SDL_Rect *Image_Rect=new SDL_Rect; SDL_Rect *Screen_Rect=new SDL_Rect; SDL_Rect *Nocheins=new SDL_Rect; SDL_Rect *Nochnocheins=new SDL_Rect; SDL_Rect *BackGround=new SDL_Rect; SDL_Event *Event=new SDL_Event; bool Run=true; atexit(SDL_Quit); if(SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER)<0) { std::cerr << "SDL konnte nicht initialisiert werden: " << SDL_GetError() << std::endl; } Screen=SDL_SetVideoMode(1280, 720, 32, SDL_HWSURFACE|SDL_DOUBLEBUF|SDL_FULLSCREEN); if(!Screen) { std::cerr << "VideoMode konnte nicht gesetzt werden: " << SDL_GetError() << std::endl; } BackGround->x=0; BackGround->y=0; Image=IMG_Load("/home/ugoessner-mint/Dokumente/SDL/Bilder/face-smile.png"); if(!Image) { std::cerr << "Bild konnte nicht geladen werden: " << SDL_GetError() << std::endl; exit(EXIT_FAILURE); } Image_Rect->w=Image->w; Image_Rect->h=Image->h; Image_Rect->x=0; Image_Rect->y=0; while(Run) { SDL_PollEvent(Event); switch(Event->type) { case SDL_KEYDOWN: switch(static_cast<int>(Event->key.keysym.sym)) { case SDLK_ESCAPE: { Run=false; } break; } break; case SDL_MOUSEBUTTONDOWN: { if(Event->type==SDL_MOUSEMOTION && Event->motion.x>=Image_Rect->x && Event->motion.x<=Image_Rect->w+Image_Rect->x && Event->motion.y>=Image_Rect->y && Event->motion.y<=Image_Rect->h+Image_Rect->y) { Image_Rect->x+=Event->motion.xrel; Image_Rect->y+=Event->motion.yrel; std::cout << "stimmt "; } if(Event->type==SDL_MOUSEBUTTONUP) { if(Event->type==SDL_MOUSEBUTTONDOWN) { Run=false; } } } break; default:; } Nochnocheins->x=500; Nochnocheins->y=400; Nocheins->x=200; Nocheins->y=400; Screen_Rect->w=Image->w; Screen_Rect->h=Image->h; BackGround->w=Screen->w; BackGround->h=Screen->h; SDL_FillRect(Screen, BackGround, SDL_MapRGBA(Screen->format, 255, 0, 255, 255)); SDL_BlitSurface(Image, 0, Screen, Nocheins); SDL_BlitSurface(Image, 0, Screen, Nochnocheins); SDL_BlitSurface(Image, 0, Screen, Image_Rect); SDL_Flip(Screen); } delete Event; delete Nocheins; delete Nochnocheins; delete Image_Rect; delete Screen_Rect; delete BackGround; SDL_Quit(); SDL_FreeSurface(Image); SDL_FreeSurface(Screen); } |
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SDL_PollEvent(Event); switch(Event->type) { case SDL_MOUSEBUTTONDOWN: { if(Event->type==SDL_MOUSEMOTION && ... |
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int CursorPosition_x_alt {0}; int CursorPosition_y_alt {0}; int CursorPosition_x_neu {0}; int CursorPosition_y_neu {0}; case SDL_MOUSEBUTTONDOWN: { clicked=true; CursorPosition_x_alt=Event->button.x; CursorPosition_y_alt=Event->button.y; } break; case SDL_MOUSEBUTTONUP: { clicked=false; } break; case SDL_MOUSEMOTION: { CursorPosition_x_neu=Event->motion.x; CursorPosition_y_neu=Event->motion.y; } default: break; } if(clicked) { if(Event->motion.x>=Image_Rect->x && Event->motion.x<=Image_Rect->w+Image_Rect->x && Event->motion.y>=Image_Rect->y && Event->motion.y<=Image_Rect->h+Image_Rect->y) { Image_Rect->x+=CursorPosition_x_alt-CursorPosition_x_neu; Image_Rect->y+=CursorPosition_y_alt-CursorPosition_y_neu; } } Screen_Rect->w=Image->w; Screen_Rect->h=Image->h; BackGround->w=Screen->w; BackGround->h=Screen->h; SDL_FillRect(Screen, BackGround, SDL_MapRGBA(Screen->format, 255, 0, 255, 255)); SDL_BlitSurface(Image, Image_Rect, Screen, Screen_Rect); SDL_Flip(Screen); } |
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »Techel« (10.05.2016, 19:14)
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