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comparison 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
comparison
equal deleted inserted replaced
9:5ec4707a3fd1 10:889227ec630c
1 #include <genesis.h> 1 #include <genesis.h>
2 #include "creep.h" 2 #include "creep.h"
3
4 const u32 cursor_tiles[4*8] = {
5 0x21100000, // top left
6 0x10000000,
7 0x10000000,
8 0x00000000,
9 0x00000000,
10 0x00000000,
11 0x00000000,
12 0x00000000,
13
14 0x00000000, // bottom left
15 0x00000000,
16 0x00000000,
17 0x00000000,
18 0x00000000,
19 0x10000000,
20 0x10000000,
21 0x21100000,
22
23 0x00000112, // top right
24 0x00000001,
25 0x00000001,
26 0x00000000,
27 0x00000000,
28 0x00000000,
29 0x00000000,
30 0x00000000,
31
32 0x00000000, // bottom right
33 0x00000000,
34 0x00000000,
35 0x00000000,
36 0x00000000,
37 0x00000001,
38 0x00000001,
39 0x00000112,
40
41 };
3 42
4 u16 tilemap[40*28]; 43 u16 tilemap[40*28];
5 u16 countdown; 44 u16 countdown;
6 45
46 int cursor_x = 0;
47 int cursor_y = 0;
48 const int cursor_size_px = 2 * 8; // two tiles of 8 pixels each
49
50 void joy_event_handler(u16 joy, u16 changed, u16 state) {
51 u16 went_down = changed & state;
52 if (went_down & BUTTON_UP) {
53 cursor_y -= cursor_size_px;
54 }
55 if (went_down & BUTTON_DOWN) {
56 cursor_y += cursor_size_px;
57 }
58 if (went_down & BUTTON_LEFT) {
59 cursor_x -= cursor_size_px;
60 }
61 if (went_down & BUTTON_RIGHT) {
62 cursor_x += cursor_size_px;
63 }
64 }
65
7 int main(void) 66 int main(void)
8 { 67 {
68 JOY_init();
69 JOY_setEventHandler(&joy_event_handler);
70
71 u8 cursor_tile_index = 1;
72 VDP_loadTileData((const u32 *)cursor_tiles, cursor_tile_index, 4, 0);
73
9 u16 i; 74 u16 i;
10 VDP_setPlanSize(64, 32); 75 VDP_setPlanSize(64, 32);
11 for (i = 6; i < 40*28; i += 4) 76 for (i = 6; i < 40*28; i += 4)
12 if ((i > 80 || i & 4) && (i < 40*26 || !(i & 4)) && i % 40 < 38) 77 if ((i > 80 || i & 4) && (i < 40*26 || !(i & 4)) && i % 40 < 38)
13 { 78 {
19 tilemap[39 + 13*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX); 84 tilemap[39 + 13*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
20 tilemap[38 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX); 85 tilemap[38 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
21 tilemap[39 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX); 86 tilemap[39 + 14*40] = TILE_ATTR_FULL(1, 0, 0, 0, 'G' + TILE_FONTINDEX);
22 for (;;) 87 for (;;)
23 { 88 {
89 VDP_setSprite(0, cursor_x, cursor_y, SPRITE_SIZE(2,2), TILE_ATTR_FULL(PAL0, 1, 0, 0, cursor_tile_index), 0);
24 VDP_waitVSync(); 90 VDP_waitVSync();
25 VDP_updateSprites(); 91 VDP_updateSprites();
26 for (i = 0; i < 28; i++) 92 for (i = 0; i < 28; i++)
27 { 93 {
28 VDP_setTileMapRectByIndex(VDP_PLAN_B, tilemap + i*40, i*64, 40, 0); 94 VDP_setTileMapRectByIndex(VDP_PLAN_B, tilemap + i*40, i*64, 40, 0);