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Posted By

ozkriff on 05/02/09


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io.c

 / Published in: C
 

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  1. #if 0
  2. #include "SDL/include/SDL.h"							
  3. #include "SDL/SDL_GfxPrimitives/SDL_gfxPrimitives.h"
  4.  
  5. #pragma comment (lib, "SDL/lib/SDL.lib")
  6. #pragma comment (lib, "SDL/SDL_GfxPrimitives/SDL_GfxPrimitives_Static.lib")
  7. #endif
  8.  
  9. enum color {BLACK, RED, GREEN, BLUE, CYAN, MAGENTA, YELLOW, WHITE, COLOR_MAX};
  10.  
  11.  
  12. static SDL_Surface* Screen;				
  13. static Uint32 Colors [COLOR_MAX] = {0x000000ff,
  14. 	0xff0000ff, 0x00ff00ff, 0x0000ffff,
  15. 	0x00ffffff, 0xff00ffff, 0xffff00ff,
  16. 	0xffffffff};
  17.  
  18. void 	clear_screen();
  19. void 	draw_rectangle( int X1, int Y1,	int X2, int Y2, enum color C );
  20. int 	get_screen_height();
  21. void 	update_screen();
  22. int 	poll_key();
  23. int 	get_key();
  24. int 	is_key_down( int key );
  25. int 	init_graph();
  26.  
  27.  
  28. /* ----------------------------  CLEAR SCREEN  ---------------------------- */
  29.  
  30. void clear_screen() 
  31. {
  32. 	boxColor (Screen, 0, 0, Screen->w - 1, Screen->h - 1, Colors[BLACK]);
  33. }
  34.  
  35.  
  36. /* ----------------------------  DRAW RECTANGLE  --------------------------- */
  37.  
  38. void draw_rectangle (
  39. 		int X1, int Y1, 	/* Upper left corner of the rectangle. */
  40. 		int X2, int Y2, 	/* Lower right corner of the rectangle. */
  41. 		enum color C ) 		/* Rectangle color. */
  42. {	
  43. 	boxColor ( Screen, X1, Y1, X2, Y2-1, Colors[C] );
  44. }
  45.  
  46.  
  47. /* ----------------------------  GET_SCREEN_HEIGHT  ---------------------- */
  48.  
  49. int get_screen_height() 
  50. {
  51. 	return Screen->h;
  52. }
  53.  
  54.  
  55. /* ----------------------------  UPDATE_SCREEN  ---------------------------- */
  56.  
  57. void update_screen() 
  58. {
  59. 	SDL_Flip(Screen);
  60. }
  61.  
  62.  
  63. /* ----------------------------  POLL_KEY-------------------------------- */
  64. /* Keyboard input. */
  65.  
  66. int poll_key() 
  67. {
  68. 	SDL_Event event;
  69.  
  70. 	while ( SDL_PollEvent(&event) ) {
  71. 		switch (event.type) {
  72. 			case SDL_KEYDOWN:
  73. 				return event.key.keysym.sym;
  74. 			case SDL_QUIT:
  75. 				exit(3);
  76. 		}
  77. 	}
  78. 	return -1;
  79. }
  80.  
  81.  
  82. /* ----------------------------  GET_KEY  --------------------------------- */
  83. /* Keyboard input. */
  84.  
  85. int get_key() 
  86. {
  87. 	SDL_Event event;
  88.  
  89. 	while (1) {
  90. 		SDL_WaitEvent(&event);
  91. 		if (event.type == SDL_KEYDOWN)
  92. 			break;
  93. 		if (event.type == SDL_QUIT)
  94. 			exit(3);
  95. 	};
  96. 	return event.key.keysym.sym;
  97. }
  98.  
  99.  
  100. /* ----------------------------  IS_KEY_DOWN  ------------------------------ */
  101. /* Keyboard input. */
  102.  
  103. int is_key_down (int key) 
  104. {
  105. 	Uint8* Keytable;
  106. 	int Numkeys;
  107. 	SDL_PumpEvents();
  108. 	Keytable = SDL_GetKeyState(&Numkeys);
  109. 	return Keytable[Key];
  110. }
  111.  
  112.  
  113. /* ----------------------------  GRAPHICAL INITIALIZATION  ----------------- */
  114.  
  115. int init_graph() 
  116. {
  117. 	const SDL_VideoInfo *info;
  118. 	Uint8  video_bpp;
  119. 	Uint32 videoflags;
  120.  
  121. 	/* Initialize SDL. */
  122. 	if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
  123. 		fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
  124. 		return 1;
  125. 	}
  126. 	atexit(SDL_Quit);
  127.  
  128. 	/* Alpha blending doesn't work well at 8-bit color. */
  129. 	info = SDL_GetVideoInfo();
  130. 	if ( info->vfmt->BitsPerPixel > 8 )
  131. 		video_bpp = info->vfmt->BitsPerPixel;
  132. 	else 
  133. 		video_bpp = 16;
  134. 	videoflags = SDL_SWSURFACE | SDL_DOUBLEBUF;
  135.  
  136. 	/* Set 640x480 video mode. */
  137. 	if ( (Screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) {
  138. 		fprintf( stderr, "Couldn't set %ix%i video mode: %s\n",
  139. 			640, 480, SDL_GetError() );
  140. 		return 2;
  141. 	}
  142.  
  143. 	return 0;
  144. }

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