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C/C++ Source or Header  |  1999-03-29  |  21.9 KB  |  631 lines
  1. /*
  2.  * C version of the 'space' assembly demo.
  3.  *
  4.  * Little demo illustrating how to use the graphical possibilities
  5.  *  of the GB (background, window and animated sprite)
  6.  * I have used fixed-point values for both the position and
  7.  *  speed of objects to get smooth movements
  8.  * 
  9.  * OBJ data             : 0x8000 -> 0x8FFF (unsigned)
  10.  * Window data          : 0x8800 -> 0x97FF (unsigned)
  11.  * Background data      : 0x8800 -> 0x97FF (signed)
  12.  * 
  13.  * Tiled 0xFC -> 0xFF are standard tiles (all black -> all white)
  14.  * 
  15.  * Keys:
  16.  * Arrow keys           : Change the speed (and direction) of the sprite
  17.  * Arrow keys + A       : Change the speed (and direction) of the window
  18.  * Arrow keys + B       : Change the speed (and direction) of the background
  19.  * START                : Open/close the door
  20.  * SELECT               : Basic fading effect
  21.  * 
  22.  * Note that the window is kept in the lower right part of the screen
  23.  * since it can't be made transparent
  24.  */
  25.  
  26. #include <gb.h>
  27.  
  28. unsigned char std_data[] = {
  29.  
  30.   /* Basic tiles (0xFC to 0xFF) */
  31.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  32.   0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,
  33.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,
  34.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
  35. };
  36.  
  37. unsigned char earth_data[] = {
  38.  
  39.   /* Tile 0x00 */
  40.   0x07,0x07,0x18,0x1F,0x32,0x2D,0x71,0x4E,0x70,0x4F,0xF8,0x87,0xF8,0x87,0xF8,0x87,
  41.   0xFC,0x83,0xFE,0x81,0x7F,0x40,0x7F,0x40,0x3F,0x20,0x1F,0x18,0x07,0x07,0x00,0x00,
  42.   0xC0,0xC0,0xF0,0x30,0x78,0x88,0x3C,0xC4,0x5C,0xA4,0x9E,0x62,0x3E,0xC2,0x3E,0xC2,
  43.   0x5E,0xA2,0x7E,0x82,0x0C,0xF4,0x0C,0xF4,0x98,0x68,0xB0,0x70,0xC0,0xC0,0x00,0x00,
  44.   0x07,0x07,0x1F,0x18,0x2F,0x30,0x4F,0x70,0x6F,0x50,0x9F,0xE0,0x9F,0xE0,0xBF,0xC0,
  45.   0xFF,0x80,0xB7,0xC8,0x63,0x5C,0x43,0x7C,0x3F,0x20,0x1F,0x18,0x07,0x07,0x00,0x00,
  46.   0xC0,0xC0,0xB0,0x70,0x18,0xE8,0x0C,0xF4,0x0C,0xF4,0x82,0x7E,0x82,0x7E,0x86,0x7A,
  47.   0xC6,0x3A,0xE6,0x1A,0xF4,0x0C,0xFC,0x04,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00,
  48.  
  49.   /* Tile 0x08 */
  50.   0x07,0x07,0x1E,0x19,0x20,0x3F,0x40,0x7F,0x42,0x7D,0x81,0xFE,0x81,0xFE,0x83,0xFC,
  51.   0xD7,0xA8,0xBB,0xC4,0x6E,0x51,0x7C,0x43,0x3F,0x20,0x1F,0x18,0x07,0x07,0x00,0x00,
  52.   0xC0,0xC0,0x70,0xB0,0xE8,0x18,0xF4,0x0C,0xF4,0x0C,0xFE,0x02,0xFE,0x02,0xFE,0x02,
  53.   0xFE,0x02,0x7E,0x82,0x3C,0xC4,0x3C,0xC4,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00,
  54.   0x07,0x07,0x1B,0x1C,0x20,0x3F,0x40,0x7F,0x40,0x7F,0xE0,0x9F,0x90,0xEF,0x89,0xF6,
  55.   0x8D,0xF2,0x9F,0xE0,0x5E,0x61,0x6F,0x50,0x3F,0x20,0x1F,0x18,0x07,0x07,0x00,0x00,
  56.   0xC0,0xC0,0xB0,0x70,0x28,0xD8,0x04,0xFC,0x2C,0xD4,0x1E,0xE2,0x1E,0xE2,0x3E,0xC2,
  57.   0x7E,0x82,0xB6,0x4A,0xE4,0x1C,0xC4,0x3C,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00,
  58.  
  59.   /* Tile 0x10 */
  60.   0x07,0x07,0x18,0x1F,0x20,0x3F,0x40,0x7F,0x40,0x7F,0xEE,0x91,0xF1,0x8E,0xE0,0x9F,
  61.   0xE0,0x9F,0xF1,0x8E,0x71,0x4E,0x72,0x4D,0x3F,0x20,0x1F,0x18,0x07,0x07,0x00,0x00,
  62.   0xC0,0xC0,0xF0,0x30,0x08,0xF8,0x04,0xFC,0x04,0xFC,0x02,0xFE,0x02,0xFE,0x92,0x6E,
  63.   0xD6,0x2A,0xFE,0x02,0xEC,0x14,0xFC,0x04,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00,
  64.   0x07,0x07,0x1D,0x1A,0x36,0x29,0x5C,0x63,0x6C,0x53,0xCE,0xB1,0x9F,0xE0,0x9E,0xE1,
  65.   0xAE,0xD1,0xBF,0xC0,0x47,0x78,0x47,0x78,0x2F,0x30,0x1F,0x18,0x07,0x07,0x00,0x00,
  66.   0xC0,0xC0,0x70,0xB0,0x08,0xF8,0x04,0xFC,0x04,0xFC,0xE2,0x1E,0x32,0xCE,0x0E,0xF2,
  67.   0x0E,0xF2,0x1E,0xE2,0x1C,0xE4,0x2C,0xD4,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00,
  68.  
  69.   /* Tile 0x18 */
  70.   0x07,0x07,0x1E,0x19,0x33,0x2C,0x49,0x76,0x42,0x7D,0xC4,0xBB,0xC1,0xBE,0xC1,0xBE,
  71.   0xE2,0x9D,0xF3,0x8C,0x78,0x47,0x78,0x47,0x3C,0x23,0x1C,0x1B,0x07,0x07,0x00,0x00,
  72.   0xC0,0xC0,0x70,0xB0,0x68,0x98,0xC4,0x3C,0xC4,0x3C,0xEE,0x12,0xF2,0x0E,0xE2,0x1E,
  73.   0xE2,0x1E,0xF2,0x0E,0x7C,0x84,0x7C,0x84,0xF8,0x08,0xF0,0x30,0xC0,0xC0,0x00,0x00
  74. };
  75.  
  76. unsigned char frame_data[] = {
  77.  
  78.   /* Tile 0x00 */
  79.   0xFF,0x00,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,
  80.   0xFF,0x00,0x01,0xFE,0x03,0xFC,0x07,0xF8,0x0F,0xF0,0x1F,0xE0,0x3F,0xC0,0x7F,0x80,
  81.   0xFF,0x00,0xFE,0x01,0xFC,0x03,0xF8,0x07,0xF0,0x0F,0xE0,0x1F,0xC0,0x3F,0x80,0x7F,
  82.   0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,
  83.   0xFF,0x00,0xFF,0x01,0xFD,0x03,0xF9,0x07,0xF1,0x0F,0xE1,0x1F,0xC1,0x3F,0x81,0x7F,
  84.   0x80,0x7F,0x81,0x7E,0x83,0x7C,0x87,0x78,0x8F,0x70,0x9F,0x60,0xBF,0x40,0xFF,0x00,
  85.   0xFF,0x70,0xFF,0x98,0xEF,0xB8,0xCF,0xF8,0xFF,0x70,0xFF,0x00,0xFF,0x00,0xFF,0x01,
  86.   0xFF,0x00,0xFE,0x01,0xFC,0x03,0xF8,0x07,0xF0,0x0F,0xE0,0x1F,0xC0,0x3F,0xFF,0xFF,
  87.  
  88.   /* Tile 0x08 */
  89.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,
  90.   0x00,0xFF,0x01,0xFE,0x03,0xFC,0x07,0xF8,0x0F,0xF0,0x1F,0xE0,0x3F,0xC0,0xFF,0xFF,
  91.   0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,
  92.   0xFF,0x0E,0xFF,0x13,0xFD,0x17,0xF9,0x1F,0xFE,0x0F,0xE0,0x1F,0xC0,0x3F,0x80,0xFF,
  93.   0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,
  94.   0xFF,0x01,0xFF,0x01,0xFD,0x03,0xF9,0x07,0xF1,0x0F,0xE1,0x1F,0xC1,0x3F,0x81,0x7F,
  95.   0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,0x80,0x7F,
  96.   0x01,0xFF,0x01,0xFF,0x03,0xFD,0x07,0xF9,0x0F,0xF1,0x1F,0xE1,0x3F,0xC1,0x7F,0x81,
  97.  
  98.   /* Tile 0x10 */
  99.   0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,
  100.   0x01,0xFF,0x01,0xFE,0x03,0xFC,0x77,0xF8,0xFF,0x98,0xEF,0xB8,0xCF,0xF8,0x7F,0xF0,
  101.   0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x0E,0xFF,0x13,0xFD,0x17,0xF9,0x1F,0xFF,0x0E,
  102.   0x80,0x7F,0x81,0x7E,0x83,0x7C,0x87,0x78,0x8F,0x70,0x9F,0x60,0xBF,0x40,0xFF,0x7F,
  103.   0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0x01,0xFF,0xFF,0xFF,
  104.  
  105.   /* Door1 */
  106.  
  107.   /* Tile 0x15 */
  108.   0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,
  109.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,
  110.   0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,
  111.  
  112.   /* Door2 */
  113.  
  114.   /* Tile 0x18 */
  115.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,
  116.   0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,
  117.   0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,
  118.   0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  119.  
  120.   /* Door3 */
  121.  
  122.   /* Tile 0x1C */
  123.   0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,
  124.   0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,
  125.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0xFF,0x00,0xFF,0x00,0xFF,
  126.   0x00,0xFF,0x00,0xFF,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  127.  
  128.   /* Door4 */
  129.  
  130.   /* Tile 0x20 */
  131.   0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
  132. };
  133.  
  134. unsigned char bkg_data[] = {
  135.  
  136.   /* Tile 0x00 */
  137.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xEF,0xFF,0xFF,0xFF,0xFF,
  138.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xDF,0xFF,0xFF,0xFF,0xFF,
  139.   0xFF,0xFF,0xFF,0xFB,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  140.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF7,0xF7,0xFF,0xFF,
  141.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xDF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  142.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,
  143.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  144.   0xFF,0xFF,0xDF,0xFF,0xEF,0xFF,0xFF,0xF7,0xFF,0xFB,0xFF,0xFD,0xFF,0xFE,0xFE,0xFF,
  145.  
  146.   /* Tile 0x08 */
  147.   0xFF,0xFF,0xFF,0xFF,0xF7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7D,0xFE,0x7C,0x39,
  148.   0xFF,0xFF,0xF7,0xFF,0xEF,0xFF,0xFF,0xDF,0xFF,0xBF,0xFF,0x7F,0xFF,0xFF,0xFF,0xFF,
  149.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xDF,0xFF,0xFF,0xFF,0xFF,0xFF,
  150.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFE,0xFF,0xFD,
  151.   0xBB,0x01,0xC7,0x83,0xC7,0x83,0xC7,0x83,0xBB,0x01,0x7C,0x39,0x7D,0xFE,0xFF,0xFF,
  152.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,
  153.   0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,0xFF,0xFF,
  154.   0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFB,0xAF,0x77,0x27,0x8F,0xDF,0x8F,0x27,0x8F,
  155.  
  156.   /* Tile 0x10 */
  157.   0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  158.   0xFF,0xFB,0xFF,0xF7,0xEF,0xFF,0xDF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  159.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,0xFB,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  160.   0xFF,0xBF,0xFF,0xDF,0xEF,0xFF,0xF7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  161.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  162.   0xFF,0xFF,0xFF,0xFE,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  163.   0xAF,0x77,0xFF,0xFB,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  164.   0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFB,0xFF,
  165.  
  166.   /* Tile 0x18 */
  167.   0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,
  168.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF7,0xFF,0xFF,0xFF,0xFF,0xFF,
  169.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFB,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,
  170.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,0x7D,0xFE,0x7C,0x39,
  171.   0xFF,0xFF,0xF7,0xFF,0xEF,0xFF,0xFF,0xDF,0xFF,0xBF,0xFF,0x7F,0x7F,0xFF,0xFF,0xFF,
  172.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xBF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFF,
  173.   0xFF,0xFF,0xFF,0xFF,0xFF,0xEF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  174.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0xFD,
  175.  
  176.   /* Tile 0x20 */
  177.   0xFF,0xFF,0xDF,0xFF,0xEF,0xFF,0xFF,0xF7,0xFF,0xFB,0xFE,0xFD,0xFD,0xFE,0xFE,0xFF,
  178.   0xAB,0x11,0xC7,0x83,0x83,0xC7,0xC7,0x83,0xAB,0x11,0x7C,0x39,0x7D,0xFE,0xFE,0xFF,
  179.   0xFF,0xFF,0xFF,0xFF,0xFB,0xDF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,0x7F,
  180.   0xFB,0xFF,0xFF,0xFD,0xFE,0xFE,0xFE,0xFF,0xFE,0xFE,0xFF,0xFD,0xFB,0xFF,0xFF,0xFF,
  181.   0xEF,0xFF,0xFF,0xDF,0x3F,0xBF,0x3F,0x7F,0x3F,0xBF,0xFF,0xDF,0xEF,0xFF,0xFF,0xFF,
  182.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xEF,0xFB,0xFF,0xFF,0xFF,0xFF,
  183.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFF,0xFD,0xFE,0xFE,0xFD,
  184.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFB,0xFF,0xFF,
  185.  
  186.   /* Tile 0x28 */
  187.   0xF7,0xFF,0xFB,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  188.   0xFF,0xFF,0xFF,0xFF,0xFF,0xBF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  189.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,
  190.   0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  191.   0xFF,0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
  192. };
  193.  
  194. /*
  195.  * Image size: 0x40 x 0x40
  196.  * Number of tiles (total - unique): 0x40 - 0x2D
  197.  */
  198.  
  199. unsigned char bkg_tiles[] = {
  200.   0x00,0x01,0x02,0x03,0xFC,0xFC,0x04,0xFC,
  201.   0xFC,0x05,0x06,0xFC,0x07,0x08,0x09,0x0A,
  202.   0xFC,0xFC,0xFC,0x02,0x0B,0x0C,0x0D,0xFC,
  203.   0x0E,0x0F,0x10,0xFC,0x11,0x12,0x13,0x14,
  204.   0x15,0x16,0x17,0xFC,0x18,0x19,0x1A,0xFC,
  205.   0x1B,0x1C,0x1D,0xFC,0xFC,0x1E,0x1F,0x20,
  206.   0x21,0x22,0xFC,0x23,0x24,0x25,0xFC,0x26,
  207.   0x27,0x13,0x28,0x29,0x2A,0x2B,0x2C,0x11
  208. };
  209.  
  210. /*
  211.  * Image size: 0x10 x 0x70
  212.  * Number of tiles (total - unique): 0x1C - 0x1C
  213.  */
  214.  
  215. unsigned char earth_tiles[] = {
  216.   0x00,0x02,
  217.   0x04,0x06,
  218.   0x08,0x0A,
  219.   0x0C,0x0E,
  220.   0x10,0x12,
  221.   0x14,0x16,
  222.   0x18,0x1A
  223. };
  224.  
  225. /*
  226.  * Image size: 0x80 x 0x50
  227.  * Number of tiles (total - unique): 0xA0 - 0x15
  228.  */
  229.  
  230. unsigned char frame_tiles[] = {
  231.   0x80,0x81,0xFD,0x82,0x83,0x81,0xFD,0x82,0x83,0x81,0xFD,0x82,0x83,0x81,0xFD,0x84,
  232.   0x85,0x86,0x87,0x88,0x89,0x8A,0x87,0x88,0x89,0x8A,0x87,0x88,0x89,0x8A,0x8B,0x8C,
  233.   0xFD,0x8D,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x8E,0x8F,
  234.   0x82,0x8C,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x85,0x90,
  235.   0x8E,0x8F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0x8D,
  236.   0x85,0x90,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x82,0x8C,
  237.   0xFD,0x8D,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x8E,0x8F,
  238.   0x82,0x8C,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x85,0x90,
  239.   0x8E,0x91,0xFD,0x82,0x83,0x81,0xFD,0x82,0x83,0x81,0xFD,0x82,0x83,0x81,0x92,0x8D,
  240.   0x93,0x8A,0x87,0x88,0x89,0x8A,0x87,0x88,0x89,0x8A,0x87,0x88,0x89,0x8A,0x87,0x94
  241. };
  242.  
  243. /*
  244.  * Image size: 0x60 x 0x30
  245.  * Number of tiles (total - unique): 0x48 - 0x03
  246.  */
  247.  
  248. unsigned char door1_tiles[] = {
  249.   0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,
  250.   0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,
  251.   0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,
  252.   0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,
  253.   0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,
  254.   0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,
  255.  
  256.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  257.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  258.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  259.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  260.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  261.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC
  262. };
  263.  
  264. /*
  265.  * Image size: 0x60 x 0x30
  266.  * Number of tiles (total - unique): 0x48 - 0x04
  267.  */
  268.  
  269. unsigned char door2_tiles[] = {
  270.   0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,
  271.   0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,
  272.   0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,0x9A,
  273.   0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,0x98,
  274.   0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,0x99,
  275.   0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,0x9B,
  276.  
  277.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  278.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  279.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  280.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  281.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  282. };
  283.  
  284. /*
  285.  * Image size: 0x60 x 0x30
  286.  * Number of tiles (total - unique): 0x48 - 0x04
  287.  */
  288.  
  289. unsigned char door3_tiles[] = {
  290.   0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,
  291.   0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,
  292.   0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,0x9E,
  293.   0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,0x9C,
  294.   0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,0x9D,
  295.   0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,0x9F,
  296.  
  297.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  298.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  299.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  300.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  301.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC
  302. };
  303.  
  304. /*
  305.  * Image size: 0x60 x 0x30
  306.  * Number of tiles (total - unique): 0x48 - 0x01
  307.  */
  308.  
  309. unsigned char door4_tiles[] = {
  310.   0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,
  311.   0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,
  312.   0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,0x97,
  313.   0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,0x95,
  314.   0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,0x96,
  315.   0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,0xA0,
  316.  
  317.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  318.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  319.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  320.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,
  321.   0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC
  322. };
  323.  
  324. unsigned char *film[] = {
  325.   &door1_tiles[0x0C*0],
  326.   &door2_tiles[0x0C*0],
  327.   &door3_tiles[0x0C*0],
  328.   &door4_tiles[0x0C*0],
  329.   &door1_tiles[0x0C*1],
  330.   &door2_tiles[0x0C*1],
  331.   &door3_tiles[0x0C*1],
  332.   &door4_tiles[0x0C*1],
  333.   &door1_tiles[0x0C*2],
  334.   &door2_tiles[0x0C*2],
  335.   &door3_tiles[0x0C*2],
  336.   &door4_tiles[0x0C*2],
  337.   &door1_tiles[0x0C*3],
  338.   &door2_tiles[0x0C*3],
  339.   &door3_tiles[0x0C*3],
  340.   &door4_tiles[0x0C*3],
  341.   &door1_tiles[0x0C*4],
  342.   &door2_tiles[0x0C*4],
  343.   &door3_tiles[0x0C*4],
  344.   &door4_tiles[0x0C*4],
  345.   &door1_tiles[0x0C*5],
  346.   &door2_tiles[0x0C*5],
  347.   &door3_tiles[0x0C*5],
  348.   &door4_tiles[0x0C*5],
  349.   &door1_tiles[0x0C*6]
  350. };
  351.  
  352. #define NBDFRAMES 0x18                  /* Nb frames for the door */
  353. #define NBSFRAMES 0x07                  /* Nb frames for the sprite */
  354. #define WINSZX    0x80                  /* Size of the picture in the window */
  355. #define WINSZY    0x50
  356. #define MINWINX   (MAXWNDPOSX-WINSZX+1) /* Bounds of the window origin */
  357. #define MINWINY   (MAXWNDPOSY-WINSZY+1)
  358. #define MAXWINX   MAXWNDPOSX
  359. #define MAXWINY   MAXWNDPOSY
  360. #define FADESTEP  0x10                  /* Nb steps for the fading effect */
  361. #define STARTFADE (0x06*FADESTEP)       /* Initial value for the fading effect */
  362.  
  363. #define CLOSED  0x00
  364. #define OPENING 0x01
  365. #define OPENED  0x02
  366. #define CLOSING 0x03
  367.  
  368. UBYTE time;         /* Global "time" value (counter) */
  369. UBYTE doorstate;    /* State of the door (OPENED, CLOSED...) */
  370. UBYTE doorpos;      /* Current position in the door animation */
  371. UBYTE color;        /* Current color for fading effect */
  372. UBYTE sframe;       /* Current frame of the sprite */
  373. fixed bposx, bposy; /* Background position (fixed point) */
  374. fixed bspx, bspy;   /* Background speed (fixed point) */
  375. fixed wposx, wposy; /* Window position (fixed point) */
  376. fixed wspx, wspy;   /* Window speed (fixed point) */
  377. fixed sposx, sposy; /* Sprite position (fixed point) */
  378. fixed sspx, sspy;   /* Sprite speed (fixed point) */
  379.  
  380. void fade();
  381. void scroll();
  382. void door();
  383. void animate_sprite();
  384. void tile_sprite();
  385. void place_sprite();
  386.  
  387. /* Fade the screen (off and on) */
  388. void fade()
  389. {
  390.   if(color == 0)
  391.     return;
  392.   switch(color)
  393.     {
  394.     case STARTFADE:
  395.     case STARTFADE-4*FADESTEP:
  396.       BGP_REG = 0xF9U;
  397.       break;
  398.     case STARTFADE-FADESTEP:
  399.     case STARTFADE-3*FADESTEP:
  400.       BGP_REG = 0xFEU;
  401.       break;
  402.     case STARTFADE-2*FADESTEP:
  403.       BGP_REG = 0xFFU;
  404.       break;
  405.     case STARTFADE-5*FADESTEP:
  406.       BGP_REG = 0xE4U;
  407.       break;
  408.     }
  409.   color--;
  410. }
  411.  
  412. /* Scroll the background, the window and the sprite */
  413. void scroll()
  414. {
  415.   /* Update background */
  416.   bposx.w += bspx.w;
  417.   bposy.w += bspy.w;
  418.   SCX_REG = bposx.b.h;
  419.   SCY_REG = bposy.b.h;
  420.  
  421.   /* Update window */
  422.   wposx.w += wspx.w ;
  423.   wposy.w += wspy.w ;
  424.   /* X position */
  425.   if(wposx.b.h >= MAXWINX) {
  426.     wposx.b.h = MAXWINX;
  427.     /* Invert speed */
  428.     wspx.w = -(WORD)wspx.w;
  429.   } else if(wposx.b.h <= MINWINX) {
  430.     wposx.b.h = MINWINX;
  431.     /* Invert speed */
  432.     wspx.w = -(WORD)wspx.w;
  433.   }
  434.   WX_REG = wposx.b.h;
  435.   /* Y position */
  436.   if(wposy.b.h >= MAXWINY) {
  437.     wposy.b.h = MAXWINY;
  438.     /* Invert speed */
  439.     wspy.w = -(WORD)wspy.w;
  440.   } else if(wposy.b.h <= MINWINY) {
  441.     wposy.b.h = MINWINY;
  442.     /* Invert speed */
  443.     wspy.w = -(WORD)wspy.w;
  444.   }
  445.   WY_REG = wposy.b.h;
  446.  
  447.   /* Update sprite */
  448.   sposx.w += sspx.w;
  449.   sposy.w += sspy.w;
  450.   place_sprite();
  451. }
  452.  
  453. /* Open and close the door */
  454. void door()
  455. {
  456.   if(doorstate == OPENING) {
  457.     doorpos++;
  458.     /* Draw the door in the window */
  459.     set_win_tiles(2, 2, 12, 6, film[doorpos]);
  460.     if(doorpos == NBDFRAMES)
  461.       doorstate = OPENED;
  462.   } else if(doorstate == CLOSING) {
  463.     doorpos--;
  464.     /* Draw the door in the window */
  465.     set_win_tiles(2, 2, 12, 6, film[doorpos]);
  466.     if(doorpos == 0)
  467.       doorstate = CLOSED;
  468.   }
  469. }
  470.  
  471. /* Animate sprite */
  472. void animate_sprite()
  473. {
  474.   if((time&0x07) == 0) {
  475.     sframe++;
  476.     if(sframe == NBSFRAMES)
  477.       sframe = 0;
  478.     tile_sprite();
  479.   }
  480. }
  481.  
  482. /* Set sprite tiles */
  483. void tile_sprite()
  484. {
  485.   UBYTE s;
  486.  
  487.   s = sframe<<1;
  488.   set_sprite_tile(0, earth_tiles[s]);
  489.   set_sprite_tile(1, earth_tiles[s+1]);
  490. }
  491.  
  492. /* Place sprite */
  493. void place_sprite()
  494. {
  495.   move_sprite(0, sposx.b.h, sposy.b.h);
  496.   move_sprite(1, sposx.b.h+8, sposy.b.h);
  497. }
  498.  
  499. void main()
  500. {
  501.   UBYTE i, j;
  502.  
  503.   disable_interrupts();
  504.   DISPLAY_OFF;
  505.   LCDC_REG = 0x67;
  506.   /*
  507.    * LCD        = Off
  508.    * WindowBank = 0x9C00
  509.    * Window     = On
  510.    * BG Chr     = 0x8800
  511.    * BG Bank    = 0x9800
  512.    * OBJ        = 8x16
  513.    * OBJ        = On
  514.    * BG         = On
  515.    */
  516.  
  517.   doorstate = CLOSED;
  518.  
  519.   /* Set palettes */
  520.   BGP_REG = OBP0_REG = OBP1_REG = 0xE4U;
  521.  
  522.   /* Initialize the background */
  523.   set_bkg_data(0xFC, 0x04, std_data);
  524.   set_bkg_data(0x00, 0x2D, bkg_data);
  525.   /*
  526.    * Draw the background
  527.    *
  528.    * Width  = 0x100 = 0x20 * 8
  529.    * Height = 0x100 = 0x20 * 8
  530.    */
  531.   for(i = 0; i < 32; i+=8)
  532.     for(j = 0; j < 32; j+=8)
  533.       set_bkg_tiles(i, j, 8, 8, bkg_tiles);
  534.   bposx.w = 0;
  535.   SCX_REG = 0;
  536.   bposy.w = 0;
  537.   SCY_REG = 0;
  538.   bspx.w = 0xFF00UL;
  539.   bspy.w = 0x0080UL;
  540.  
  541.   /* Initialize the window */
  542.   set_win_data(0x80, 0x21, frame_data);
  543.   /*
  544.    * Draw the frame in the window
  545.    *
  546.    * Width  = 0x80 = 0x10 * 8
  547.    * Height = 0x50 = 0x0A * 8
  548.    */
  549.   set_win_tiles(0, 0, 16, 10, frame_tiles);
  550.   /*
  551.    * Draw the door in the window
  552.    *
  553.    * Width  = 0x60 = 0x20 * 12
  554.    * Height = 0x30 = 0x20 * 6
  555.    */
  556.   set_win_tiles(2, 2, 12, 6, door1_tiles);
  557.   wposx.b.h = MAXWNDPOSX;
  558.   wposx.b.l = 0;
  559.   WX_REG = MAXWNDPOSX;
  560.   wposy.b.h = MAXWNDPOSY;
  561.   wposy.b.l = 0;
  562.   WY_REG = MAXWNDPOSY;
  563.   wspx.w = 0xFF80UL;
  564.   wspy.w = 0xFFC0UL;
  565.  
  566.   /* Initialize the sprite */
  567.   set_sprite_data(0x00, 0x1C, earth_data);
  568.   set_sprite_prop(0, 0x00);
  569.   set_sprite_prop(1, 0x00);
  570.   sframe = 0;
  571.   sposx.w  = 0x1000U;
  572.   sposy.w  = 0x1000U;
  573.   sspx.w  = 0x0040UL;
  574.   sspy.w  = 0x0040UL;
  575.   tile_sprite();
  576.   place_sprite();
  577.  
  578.   DISPLAY_ON;
  579.   enable_interrupts();
  580.  
  581.   while(1) {
  582.     /* Skip four VBLs (slow down animation) */
  583.     for(i = 0; i < 4; i++)
  584.       wait_vbl_done();
  585.     time++;
  586.     fade();
  587.     door();
  588.     scroll();
  589.     animate_sprite();
  590.     i = joypad();
  591.     if(i & J_B) {
  592.       if(i & J_UP)
  593.     bspy.w -= 0x0010UL;
  594.       if(i & J_DOWN)
  595.     bspy.w += 0x0010UL;
  596.       if(i & J_LEFT)
  597.     bspx.w -= 0x0010UL;
  598.       if(i & J_RIGHT)
  599.     bspx.w += 0x0010UL;
  600.     } else if(i & J_A) {
  601.       if(i & J_UP)
  602.     wspy.w -= 0x0010UL;
  603.       if(i & J_DOWN)
  604.     wspy.w += 0x0010UL;
  605.       if(i & J_LEFT)
  606.     wspx.w -= 0x0010UL;
  607.       if(i & J_RIGHT)
  608.     wspx.w += 0x0010UL;
  609.     } else {
  610.       if(i & J_SELECT)
  611.     color = STARTFADE;
  612.       if(i & J_START)
  613.     if(doorstate == CLOSED) {
  614.       doorstate = OPENING;
  615.       doorpos = 0;
  616.     } else if(doorstate == OPENED) {
  617.       doorstate = CLOSING;
  618.       doorpos = NBDFRAMES;
  619.     }
  620.       if(i & J_UP)
  621.     sspy.w -= 0x0010UL;
  622.       if(i & J_DOWN)
  623.     sspy.w += 0x0010UL;
  624.       if(i & J_LEFT)
  625.     sspx.w -= 0x0010UL;
  626.       if(i & J_RIGHT)
  627.     sspx.w += 0x0010UL;
  628.     }
  629.   }
  630. }
  631.