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 #include "cpuid.h"
  14
  15 static int handle_sball_event(sball_event *ev);
  16 static void recalc_sball_matrix(float *xform);
  17
  18 static int quit;
  19
  20 int force_snd_config;
  21
  22 static int use_sball;
  23 static vec3_t pos = {0, 0, 0};
  24 static quat_t rot = {0, 0, 0, 1};
  25
  26
  27 int main(int argc, char **argv)
  28 {
  29         int i;
  30         int vmidx, status = 0;
  31
  32         for(i=1; i<argc; i++) {
  33                 if(strcmp(argv[i], "-setup") == 0) {
  34                         force_snd_config = 1;
  35                 }
  36         }
  37
  38 #ifdef __DJGPP__
  39         __djgpp_nearptr_enable();
  40 #endif
  41
  42         if(read_cpuid(&cpuid) == 0) {
  43                 print_cpuid(&cpuid);
  44         }
  45
  46         init_logger("demo.log");
  47
  48         /* au_init needs to be called early, before init_timer, and also before
  49          * we enter graphics mode, to use the midas configuration tool if necessary
  50          */
  51         if(au_init() == -1) {
  52                 return 1;
  53         }
  54
  55         init_timer(100);
  56         kb_init(32);
  57
  58         if(init_video() == -1) {
  59                 return 1;
  60         }
  61
  62         if((vmidx = match_video_mode(FB_WIDTH, FB_HEIGHT, FB_BPP)) == -1) {
  63                 return 1;
  64         }
  65         if(!(vmem = set_video_mode(vmidx, 1))) {
  66                 return 1;
  67         }
  68
  69         if(opt.mouse) {
  70                 if((opt.mouse = have_mouse())) {
  71                         printf("initializing mouse input\n");
  72                         set_mouse_limits(0, 0, FB_WIDTH - 1, FB_HEIGHT - 1);
  73                         set_mouse(FB_WIDTH / 2, FB_HEIGHT / 2);
  74                 }
  75         }
  76
  77         if(demo_init(argc, argv) == -1) {
  78                 status = -1;
  79                 goto break_evloop;
  80         }
  81
  82         if(opt.sball && sball_init() == 0) {
  83                 use_sball = 1;
  84         }
  85
  86         reset_timer();
  87
  88         for(;;) {
  89                 int key;
  90                 while((key = kb_getkey()) != -1) {
  91                         demo_keyboard(key, 1);
  92                         if(quit) goto break_evloop;
  93                 }
  94
  95                 if(opt.mouse) {
  96                         mouse_bmask = read_mouse(&mouse_x, &mouse_y);
  97                 }
  98                 if(use_sball && sball_pending()) {
  99                         sball_event ev;
 100                         while(sball_getevent(&ev)) {
 101                                 handle_sball_event(&ev);
 102                         }
 103                         recalc_sball_matrix(sball_matrix);
 104                 }
 105
 106                 time_msec = get_msec();
 107                 demo_draw();
 108         }
 109
 110 break_evloop:
 111         demo_cleanup();
 112         set_text_mode();
 113         cleanup_video();
 114         kb_shutdown();
 115         au_shutdown();
 116         if(use_sball) {
 117                 sball_shutdown();
 118         }
 119         return status;
 120 }
 121
 122 void demo_quit(void)
 123 {
 124         quit = 1;
 125 }
 126
 127 #define TX(ev)  ((ev)->motion.motion[0])
 128 #define TY(ev)  ((ev)->motion.motion[1])
 129 #define TZ(ev)  ((ev)->motion.motion[2])
 130 #define RX(ev)  ((ev)->motion.motion[3])
 131 #define RY(ev)  ((ev)->motion.motion[4])
 132 #define RZ(ev)  ((ev)->motion.motion[5])
 133
 134 static int handle_sball_event(sball_event *ev)
 135 {
 136         switch(ev->type) {
 137         case SBALL_EV_MOTION:
 138                 if(RX(ev) | RY(ev) | RZ(ev)) {
 139                         float rx = (float)RX(ev);
 140                         float ry = (float)RY(ev);
 141                         float rz = (float)RZ(ev);
 142                         float axis_len = sqrt(rx * rx + ry * ry + rz * rz);
 143                         if(axis_len > 0.0) {
 144                                 rot = quat_rotate(rot, axis_len * 0.001, -rx / axis_len,
 145                                                 -ry / axis_len, -rz / axis_len);
 146                         }
 147                 }
 148
 149                 pos.x += TX(ev) * 0.001;
 150                 pos.y += TY(ev) * 0.001;
 151                 pos.z += TZ(ev) * 0.001;
 152                 break;
 153
 154         case SBALL_EV_BUTTON:
 155                 if(ev->button.pressed) {
 156                         pos = v3_cons(0, 0, 0);
 157                         rot = quat_cons(1, 0, 0, 0);
 158                 }
 159                 break;
 160         }
 161
 162         return 0;
 163 }
 164
 165 void recalc_sball_matrix(float *xform)
 166 {
 167         quat_to_mat(xform, rot);
 168         xform[12] = pos.x;
 169         xform[13] = pos.y;
 170         xform[14] = pos.z;
 171 }