git.mutantstargoat.com Git - mdlife/blob - src/main.c

   1 #include <stdio.h>
   2 #include "z80.h"
   3 #include "vdp.h"
   4 #include "pad.h"
   5 #include "sprite.h"
   6 #include "parts.h"
   7 #include "debug.h"
   8
   9 uint32_t frameno;
  10 uint32_t dbgval[4];
  11
  12 struct part parts[3];
  13 static struct part *part;
  14
  15
  16 int main(void)
  17 {
  18         int i;
  19         static unsigned short bnprev;
  20
  21         z80_init();
  22         vdp_init();
  23         pad_init();
  24         dbg_init();
  25
  26         dna_init();
  27         mitosis_init();
  28         simba_init();
  29
  30         parts[0].start = dna_start;
  31         parts[0].update = dna_update;
  32         parts[1].start = mitosis_start;
  33         parts[1].update = mitosis_update;
  34         parts[1].vblank = mitosis_vblank;
  35         parts[2].start = simba_start;
  36         parts[2].update = simba_update;
  37         parts[2].vblank = simba_vblank;
  38         part = parts;
  39
  40         part->start();
  41
  42         for(;;) {
  43                 unsigned char val;
  44                 z80_grab_bus();
  45                 while(!z80_have_bus());
  46                 val = Z80_MEM[0x1ffc];
  47                 dbgval[3] = (uint32_t)val << 8;
  48                 val = Z80_MEM[0x1ffd];
  49                 dbgval[3] |= val;
  50                 z80_release_bus();
  51
  52                 dbg_setcursor(32, 0);
  53                 for(i=0; i<4; i++) {
  54                         printf("%04x\n", (unsigned int)dbgval[i]);
  55                 }
  56                 spr_begin();
  57
  58                 part->update();
  59
  60                 vdp_wait_vblank();
  61                 if(part->vblank) part->vblank();
  62                 spr_submit();
  63                 bnstate = pad_read(0);
  64                 bndiff = bnstate ^ bnprev;
  65                 bnprev = bnstate;
  66
  67                 if(bndiff & bnstate & PAD_START) {
  68                         if(++part >= parts + 3) {
  69                                 part = parts;
  70                         }
  71                         part->start();
  72                 }
  73
  74                 frameno++;
  75         }
  76
  77         return 0;
  78 }