muamua/main.c

   1 #include <SDL/SDL.h>
   2 #include <SDL/SDL_image.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5
   6 #define true 1;
   7 #define false 0;
   8
   9
  10 const int SCREEN_WIDTH = 640;
  11 const int SCREEN_HEIGHT = 480;
  12 const int SCREEN_BPP = 32;
  13
  14
  15 SDL_Surface *screen = NULL;
  16 SDL_Surface *actor = NULL;
  17 SDL_Surface *background = NULL;
  18
  19
  20 SDL_Event event;
  21
  22
  23 int quit = true;
  24
  25 int init(char *title){
  26
  27     if( SDL_Init( SDL_INIT_EVERYTHING ) == -1)
  28         return true;
  29
  30     screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );
  31
  32
  33     if(!screen)
  34         return true;
  35
  36
  37     SDL_WM_SetCaption(title, NULL);
  38
  39
  40     return false;
  41 }
  42
  43 SDL_Surface *load_image( char *filename ){
  44
  45     SDL_Surface* loadedImage = NULL;
  46
  47
  48     SDL_Surface* optimizedImage = NULL;
  49
  50
  51     loadedImage = IMG_Load( filename );
  52
  53
  54   /*  if( loadedImage ){
  55
  56         optimizedImage = SDL_DisplayFormat( loadedImage );
  57
  58
  59         SDL_FreeSurface( loadedImage );
  60
  61
  62         if( optimizedImage ){
  63
  64             Uint32 colorkey = SDL_MapRGB( optimizedImage->format, 0xFF, 0, 0xFF );
  65
  66
  67             SDL_SetColorKey( optimizedImage, SDL_SRCCOLORKEY, colorkey );
  68         }
  69     }*/
  70
  71     return loadedImage;
  72 }
  73 void move(Uint8 *keystates, int *x, int *y){
  74
  75     int speed = 2;
  76
  77     if( keystates[SDLK_UP] )
  78         *y -= speed;
  79     if( keystates[SDLK_DOWN] )
  80         *y += speed;
  81     if( keystates[SDLK_LEFT] )
  82         *x -= speed;
  83     if( keystates[SDLK_RIGHT] )
  84         *x += speed;
  85 }
  86
  87 void is_out(int *x, int *y){
  88
  89     if(*x < 0)
  90         *x = 0;
  91
  92     if(*x + 49 > SCREEN_WIDTH)
  93         *x = SCREEN_WIDTH - 49;
  94
  95     if(*y < 0)
  96         *y = 0;
  97
  98     if(*y + 104 > SCREEN_HEIGHT)
  99         *y = SCREEN_HEIGHT - 104;
 100 }
 101
 102 void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination ){
 103
 104     SDL_Rect offset;
 105
 106
 107     offset.x = x;
 108     offset.y = y;
 109
 110
 111     SDL_BlitSurface( source, NULL, destination, &offset );
 112 }
 113
 114 int load_files(){
 115
 116     background = load_image( "background.png" );
 117
 118
 119     if(!background)
 120         return true;
 121
 122
 123     actor = load_image( "actor.png" );
 124
 125
 126     if(!actor)
 127         return true;
 128
 129     return false;
 130 }
 131
 132 void clean_up(){
 133
 134     SDL_Quit();
 135
 136
 137     SDL_FreeSurface( actor );
 138     SDL_FreeSurface( background );
 139 }
 140
 141 int main(){
 142     if (init("MUAMUAMUAMAMAMA")){
 143         printf("Error al Iniciar");
 144         return 1;
 145     }
 146
 147
 148     int x = 100, y = 100;
 149
 150     if(load_files())
 151         return 1;
 152
 153
 154     while(quit){
 155
 156         Uint8 *keystates = SDL_GetKeyState( NULL );
 157         if( keystates[ SDLK_ESCAPE ] )
 158             break;
 159
 160
 161         while( SDL_PollEvent( &event ) ){
 162
 163             if( event.type == SDL_QUIT ){
 164
 165                 quit = false;
 166             }
 167         }
 168
 169         move(keystates, &x, &y);
 170
 171         is_out(&x, &y);
 172         apply_surface( 0, 0, background, screen );
 173         apply_surface( x, y, actor, screen );
 174         SDL_Flip( screen );
 175     }
 176     clean_up();
 177     return 0;
 178 }