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