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annotate src/main.c @ 10:889227ec630c

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cursor and input code added.
author William Morgan <bill@mrgn.org>
date Sun, 12 Jan 2014 16:13:49 -0800
parents 3ed112d64b1b
children 1ee4a5c23c95
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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8f23be2db808 Movec creep.h into the src folder. Added main loop
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1 #include <genesis.h>
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2 #include "creep.h"
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3
10
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4 const u32 cursor_tiles[4*8] = {
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5 0x21100000, // top left
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6 0x10000000,
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7 0x10000000,
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8 0x00000000,
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9 0x00000000,
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10 0x00000000,
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11 0x00000000,
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12 0x00000000,
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13
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14 0x00000000, // bottom left
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15 0x00000000,
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16 0x00000000,
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17 0x00000000,
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18 0x00000000,
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19 0x10000000,
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20 0x10000000,
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21 0x21100000,
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22
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23 0x00000112, // top right
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24 0x00000001,
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25 0x00000001,
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26 0x00000000,
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27 0x00000000,
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28 0x00000000,
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29 0x00000000,
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30 0x00000000,
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31
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32 0x00000000, // bottom right
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33 0x00000000,
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34 0x00000000,
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35 0x00000000,
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36 0x00000000,
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37 0x00000001,
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38 0x00000001,
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39 0x00000112,
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40
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41 };
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42
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43 u16 tilemap[40*28];
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44 u16 countdown;
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45
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46 int cursor_x = 0;
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47 int cursor_y = 0;
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48 const int cursor_size_px = 2 * 8; // two tiles of 8 pixels each
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49
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50 void joy_event_handler(u16 joy, u16 changed, u16 state) {
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51 u16 went_down = changed & state;
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52 if (went_down & BUTTON_UP) {
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53 cursor_y -= cursor_size_px;
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54 }
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55 if (went_down & BUTTON_DOWN) {
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56 cursor_y += cursor_size_px;
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57 }
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58 if (went_down & BUTTON_LEFT) {
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59 cursor_x -= cursor_size_px;
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60 }
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61 if (went_down & BUTTON_RIGHT) {
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62 cursor_x += cursor_size_px;
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63 }
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64 }
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65
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66 int main(void)
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67 {
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68 JOY_init();
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69 JOY_setEventHandler(&joy_event_handler);
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70
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71 u8 cursor_tile_index = 1;
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72 VDP_loadTileData((const u32 *)cursor_tiles, cursor_tile_index, 4, 0);
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73
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74 u16 i;
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75 VDP_setPlanSize(64, 32);
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76 for (i = 6; i < 40*28; i += 4)
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77 if ((i > 80 || i & 4) && (i < 40*26 || !(i & 4)) && i % 40 < 38)
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78 {
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79 tilemap[i] = 'O' + TILE_FONTINDEX;
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80 tilemap[i+1] = 'O' + TILE_FONTINDEX;
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81 }
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82
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83 tilemap[38 + 13*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
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84 tilemap[39 + 13*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
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85 tilemap[38 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
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86 tilemap[39 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
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87 for (;;)
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88 {
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89 VDP_setSprite(0, cursor_x, cursor_y, SPRITE_SIZE(2,2), TILE_ATTR_FULL(PAL0, 1, 0, 0, cursor_tile_index), 0);
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90 VDP_waitVSync();
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91 VDP_updateSprites();
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92 for (i = 0; i < 28; i++)
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93 {
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94 VDP_setTileMapRectByIndex(VDP_PLAN_B, tilemap + i*40, i*64, 40, 0);
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95 }
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96 if (cur_creeps < 4)
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97 {
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98 if (countdown)
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99 --countdown;
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100 else
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101 {
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102 spawn_creep(CREEP_NORMAL, 4, 122);
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103 countdown = 300;
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104 }
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105 }
2
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106 }
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107 return 0;
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108 }