gba-x3dtest

annotate src/game.c @ 13:2070a81127f2

find changesets by author, revision, files, or words in the commit message
foo
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 23 Jun 2014 08:28:28 +0300
parents ecc022a21279
children c398d834d64a
rev   line source
nuclear@6 1 #include "config.h"
nuclear@5 2 #include "game.h"
nuclear@5 3 #include "gbasys.h"
nuclear@8 4 #include "x3d.h"
nuclear@8 5 #include "sincos.h"
nuclear@8 6 #include "fixed.h"
nuclear@9 7 #include "palman.h"
nuclear@13 8 #include "ggen.h"
nuclear@9 9
nuclear@9 10 static void draw_rect(int x, int y, int w, int h, uint16_t color);
nuclear@5 11
nuclear@5 12 #define X16INT(x) ((x) << 16)
nuclear@12 13 #define X16FLT(x) ((int32_t)((x) * 65536.0))
nuclear@5 14
nuclear@8 15 static const int32_t poly[] = {
nuclear@13 16 X16INT(-1), X16INT(-1), 0,
nuclear@13 17 X16INT(-1), X16INT(1), 0,
nuclear@13 18 X16INT(1), X16INT(1), 0,
nuclear@13 19 X16INT(1), X16INT(-1), 0,
nuclear@13 20 X16INT(1), X16INT(-1), 0,
nuclear@13 21 X16INT(1), X16INT(1), 0,
nuclear@13 22 X16INT(-1), X16INT(1), 0,
nuclear@13 23 X16INT(-1), X16INT(-1), 0
nuclear@13 24 };
nuclear@13 25 static const int32_t colors[] = {
nuclear@13 26 65535, 0, 0, 65535, 0, 0, 65535, 0, 0, 65535, 0, 0,
nuclear@13 27 65536, 65535, 0, 65536, 65535, 0, 65536, 65535, 0, 65536, 65535, 0
nuclear@5 28 };
nuclear@8 29 static const short vcount = sizeof poly / sizeof *poly / 3;
nuclear@8 30
nuclear@13 31 static struct mesh box;
nuclear@13 32
nuclear@13 33
nuclear@8 34 int game_init(void)
nuclear@8 35 {
nuclear@8 36 sincos_init();
nuclear@9 37 #ifdef PALMODE
nuclear@9 38 palman_init();
nuclear@9 39 #endif
nuclear@8 40
nuclear@12 41 x3d_projection(45.0, (WIDTH << 16) / HEIGHT, 65536 / 2, 65536 * 500);
nuclear@12 42
nuclear@13 43 init_mesh(&box);
nuclear@13 44 gen_box(&box);
nuclear@13 45
nuclear@8 46 return 0;
nuclear@8 47 }
nuclear@5 48
nuclear@13 49 static int32_t cam_theta, cam_phi = 25 << 16;
nuclear@9 50 static short keyrot;
nuclear@9 51 static int autorot = 1;
nuclear@9 52
nuclear@5 53 void game_draw(void)
nuclear@5 54 {
nuclear@8 55 unsigned long msec = get_millisec();
nuclear@8 56
nuclear@5 57 clear_buffer(back_buffer, 0);
nuclear@5 58
nuclear@8 59 x3d_load_identity();
nuclear@12 60 /*x3d_translate(-itox16(WIDTH / 2), -itox16(HEIGHT / 2), 0);
nuclear@9 61 if(autorot) {
nuclear@9 62 x3d_rotate((msec / 64) << 16, 0, 0, 65536);
nuclear@9 63 } else {
nuclear@9 64 x3d_rotate(keyrot << 16, 0, 0, 65536);
nuclear@9 65 }
nuclear@12 66 x3d_translate(itox16(WIDTH / 2), itox16(HEIGHT / 2), 0);*/
nuclear@12 67
nuclear@13 68 x3d_rotate(cam_phi, 65536, 0, 0);
nuclear@13 69 x3d_rotate(keyrot << 16, 0, 65536, 0);
nuclear@13 70 x3d_translate(0, 0, X16INT(6));
nuclear@6 71
nuclear@9 72 #ifdef PALMODE
nuclear@9 73 x3d_color_index(255);
nuclear@9 74 #else
nuclear@8 75 x3d_color(65536, 65536, 65536);
nuclear@9 76 #endif
nuclear@13 77
nuclear@13 78 draw_mesh(&box);
nuclear@13 79
nuclear@13 80 /*
nuclear@13 81 x3d_vertex_array(vcount, poly);
nuclear@13 82 x3d_color_array(vcount, colors);
nuclear@13 83 x3d_draw(X3D_QUADS, vcount);
nuclear@13 84 x3d_color_array(0, 0);
nuclear@8 85
nuclear@9 86 #ifdef PALMODE
nuclear@9 87 x3d_color_index(RGBPAL(0, 255, 0));
nuclear@9 88 #else
nuclear@8 89 x3d_color(0, 65536, 0);
nuclear@9 90 #endif
nuclear@13 91
nuclear@12 92 x3d_draw(X3D_POINTS, vcount);
nuclear@9 93 x3d_vertex_array(0, 0);
nuclear@13 94 */
nuclear@6 95
nuclear@5 96 flip();
nuclear@5 97 }
nuclear@5 98
nuclear@5 99 void game_keyb(int key, int pressed)
nuclear@5 100 {
nuclear@9 101 if(!pressed) return;
nuclear@9 102
nuclear@9 103 switch(key) {
nuclear@9 104 case KEY_LEFT:
nuclear@9 105 keyrot--;
nuclear@9 106 break;
nuclear@9 107
nuclear@9 108 case KEY_RIGHT:
nuclear@9 109 keyrot++;
nuclear@9 110 break;
nuclear@9 111
nuclear@9 112 case KEY_A:
nuclear@9 113 autorot = !autorot;
nuclear@9 114 break;
nuclear@9 115
nuclear@9 116 default:
nuclear@9 117 break;
nuclear@9 118 }
nuclear@5 119 }
nuclear@9 120
nuclear@9 121 #ifdef PALMODE
nuclear@9 122 #define ROWADV (WIDTH / 2)
nuclear@9 123 #else
nuclear@9 124 #define ROWADV WIDTH
nuclear@9 125 #endif
nuclear@9 126
nuclear@9 127 static void draw_rect(int x, int y, int w, int h, uint16_t color)
nuclear@9 128 {
nuclear@9 129 int i, xsz = w, ysz = h;
nuclear@9 130 uint16_t *pixels = back_buffer->pixels;
nuclear@9 131 uint16_t *topleft, *topright, *botleft;
nuclear@9 132
nuclear@9 133 #ifdef PALMODE
nuclear@9 134 pixels += (y * WIDTH + x) / 2;
nuclear@9 135 topleft = pixels;
nuclear@9 136 topright = (uint16_t*)back_buffer->pixels + (y * WIDTH + x + w - 1) / 2;
nuclear@9 137
nuclear@9 138 color |= color << 8;
nuclear@9 139 xsz /= 2;
nuclear@9 140 #else
nuclear@9 141 pixels += y * WIDTH + x;
nuclear@9 142 topleft = pixels;
nuclear@9 143 topright = topleft + w - 1;
nuclear@9 144 #endif
nuclear@9 145 botleft = topleft + (ysz - 1) * ROWADV;
nuclear@9 146
nuclear@9 147 #ifdef PALMODE
nuclear@9 148 if(x & 1) {
nuclear@9 149 *topleft = (*topleft & 0xff) | (color & 0xff00);
nuclear@9 150 *botleft = (*topleft & 0xff) | (color & 0xff00);
nuclear@9 151 ++topleft;
nuclear@9 152 ++botleft;
nuclear@9 153 xsz -= 1;
nuclear@9 154 }
nuclear@9 155 #endif
nuclear@9 156 for(i=0; i<xsz; i++) {
nuclear@9 157 *topleft++ = color;
nuclear@9 158 *botleft++ = color;
nuclear@9 159 }
nuclear@9 160
nuclear@9 161 topleft = pixels;
nuclear@9 162 for(i=0; i<ysz; i++) {
nuclear@9 163 #ifdef PALMODE
nuclear@9 164 if(x & 1) {
nuclear@9 165 *topleft = (*topleft & 0xff) | (color & 0xff00);
nuclear@9 166 } else {
nuclear@9 167 *topleft = (*topleft & 0xff00) | (color & 0xff);
nuclear@9 168 }
nuclear@9 169
nuclear@9 170 if((x + w - 1) & 1) {
nuclear@9 171 *topright = (*topright & 0xff) | (color & 0xff00);
nuclear@9 172 } else {
nuclear@9 173 *topright = (*topright & 0xff00) | (color & 0xff);
nuclear@9 174 }
nuclear@9 175 #else
nuclear@9 176 *topleft = color;
nuclear@9 177 *topright = color;
nuclear@9 178 #endif
nuclear@9 179
nuclear@9 180 topleft += ROWADV;
nuclear@9 181 topright += ROWADV;
nuclear@9 182 }
nuclear@9 183 }