git.mutantstargoat.com Git - dosdemo/blob - src/dos/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include "demo.h"
   5 #include "keyb.h"
   6 #include "timer.h"
   7 #include "gfx.h"
   8 #include "logger.h"
   9 #include "cdpmi.h"
  10 #include "audio.h"
  11 #include "sball.h"
  12 #include "vmath.h"
  13
  14 static int handle_sball_event(sball_event *ev);
  15 static void recalc_sball_matrix(float *xform);
  16
  17 static int quit;
  18
  19 int force_snd_config;
  20
  21 static int use_sball;
  22 static vec3_t pos = {0, 0, 0};
  23 static quat_t rot = {0, 0, 0, 1};
  24
  25
  26 int main(int argc, char **argv)
  27 {
  28         int i;
  29         int vmidx, status = 0;
  30
  31         for(i=1; i<argc; i++) {
  32                 if(strcmp(argv[i], "-setup") == 0) {
  33                         force_snd_config = 1;
  34                 }
  35         }
  36
  37 #ifdef __DJGPP__
  38         __djgpp_nearptr_enable();
  39 #endif
  40
  41         init_logger("demo.log");
  42
  43         /* au_init needs to be called early, before init_timer, and also before
  44          * we enter graphics mode, to use the midas configuration tool if necessary
  45          */
  46         if(au_init() == -1) {
  47                 return 1;
  48         }
  49
  50         init_timer(100);
  51         kb_init(32);
  52
  53         if(init_video() == -1) {
  54                 return 1;
  55         }
  56
  57         if((vmidx = match_video_mode(640, 480, 16)) == -1) {
  58                 return 1;
  59         }
  60         if(!(vmem = set_video_mode(vmidx, 1))) {
  61                 return 1;
  62         }
  63
  64         if(opt.mouse) {
  65                 if((opt.mouse = have_mouse())) {
  66                         printf("initializing mouse input\n");
  67                         set_mouse_limits(0, 0, FB_WIDTH - 1, FB_HEIGHT - 1);
  68                         set_mouse(FB_WIDTH / 2, FB_HEIGHT / 2);
  69                 }
  70         }
  71
  72         if(init(argc, argv) == -1) {
  73                 status = -1;
  74                 goto break_evloop;
  75         }
  76
  77         if(opt.sball && sball_init() == 0) {
  78                 use_sball = 1;
  79         }
  80
  81         reset_timer();
  82
  83         for(;;) {
  84                 int key;
  85                 while((key = kb_getkey()) != -1) {
  86                         demo_key(key, 1);
  87                         if(quit) goto break_evloop;
  88                 }
  89
  90                 if(opt.mouse) {
  91                         mouse_bmask = read_mouse(&mouse_x, &mouse_y);
  92                 }
  93                 if(use_sball && sball_pending()) {
  94                         sball_event ev;
  95                         while(sball_getevent(&ev)) {
  96                                 handle_sball_event(&ev);
  97                         }
  98                         recalc_sball_matrix(sball_matrix);
  99                 }
 100
 101                 time_msec = get_msec();
 102                 draw();
 103         }
 104
 105 break_evloop:
 106         cleanup();
 107         set_text_mode();
 108         cleanup_video();
 109         kb_shutdown();
 110         au_shutdown();
 111         if(use_sball) {
 112                 sball_shutdown();
 113         }
 114         return status;
 115 }
 116
 117 void demo_quit(void)
 118 {
 119         quit = 1;
 120 }
 121
 122 #define TX(ev)  ((ev)->motion.motion[0])
 123 #define TY(ev)  ((ev)->motion.motion[1])
 124 #define TZ(ev)  ((ev)->motion.motion[2])
 125 #define RX(ev)  ((ev)->motion.motion[3])
 126 #define RY(ev)  ((ev)->motion.motion[4])
 127 #define RZ(ev)  ((ev)->motion.motion[5])
 128
 129 static int handle_sball_event(sball_event *ev)
 130 {
 131         switch(ev->type) {
 132         case SBALL_EV_MOTION:
 133                 if(RX(ev) | RY(ev) | RZ(ev)) {
 134                         float rx = (float)RX(ev);
 135                         float ry = (float)RY(ev);
 136                         float rz = (float)RZ(ev);
 137                         float axis_len = sqrt(rx * rx + ry * ry + rz * rz);
 138                         if(axis_len > 0.0) {
 139                                 rot = quat_rotate(rot, axis_len * 0.001, -rx / axis_len,
 140                                                 -ry / axis_len, -rz / axis_len);
 141                         }
 142                 }
 143
 144                 pos.x += TX(ev) * 0.001;
 145                 pos.y += TY(ev) * 0.001;
 146                 pos.z += TZ(ev) * 0.001;
 147                 break;
 148
 149         case SBALL_EV_BUTTON:
 150                 if(ev->button.pressed) {
 151                         pos = v3_cons(0, 0, 0);
 152                         rot = quat_cons(1, 0, 0, 0);
 153                 }
 154                 break;
 155         }
 156
 157         return 0;
 158 }
 159
 160 void recalc_sball_matrix(float *xform)
 161 {
 162         quat_to_mat(xform, rot);
 163         xform[12] = pos.x;
 164         xform[13] = pos.y;
 165         xform[14] = pos.z;
 166 }