3do-devkit/src/display.cpp at master · trapexit/3do-devkit · GitHub

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#include "display.hpp"

#include "abort.h"

#include "graphics.h"
#include "io.h"
#include "mem.h"
#include "stdio.h"

#define NUM_SCREENS 2


BasicDisplay::BasicDisplay()
{
  Item rv;
  Err err;

  err = OpenGraphicsFolio();
  if(err < 0)
    abort_err(err);

  sc = (ScreenContext*)AllocMem(sizeof(ScreenContext),MEMTYPE_ANY);
  if(sc == NULL)
    return;

  rv = CreateBasicDisplay(sc,DI_TYPE_DEFAULT,NUM_SCREENS);
  if(rv < 0)
    {
      FreeMem(sc,sizeof(ScreenContext));
      sc = NULL;
      abort("unable to initialize display");
    }

  for(int i = 0; i < sc->sc_NumScreens; i++)
    {
      DisableHAVG(sc->sc_Screens[i]);
      DisableVAVG(sc->sc_Screens[i]);
    }

  _vram_ioreq = CreateVRAMIOReq();
  _vbl_ioreq  = CreateVBLIOReq();
  _screen     = 0;
}

BasicDisplay::~BasicDisplay()
{
  if(sc == NULL)
    return;

  DeleteIOReq(_vbl_ioreq);
  DeleteIOReq(_vram_ioreq);
  DeleteBasicDisplay(sc);
  FreeMem(sc,sizeof(ScreenContext));
}

Err
BasicDisplay::clear(const int color_)
{
  return SetVRAMPages(_vram_ioreq,
                      sc->sc_Bitmaps[_screen]->bm_Buffer,
                      color_,
                      75,
                      0xFFFFFFFF);
}

Err
BasicDisplay::waitvbl()
{
  return WaitVBL(_vbl_ioreq,1);
}

Err
BasicDisplay::display()
{
  return DisplayScreen(sc->sc_Screens[_screen],0);
}

void
BasicDisplay::swap()
{
  _screen = !_screen;
}

Err
BasicDisplay::display_and_swap()
{
  Err err;

  err = display();
  swap();

  return err;
}

Err
BasicDisplay::draw_cels(CCB *ccb_)
{
  return DrawCels(sc->sc_BitmapItems[_screen],ccb_);
}

Err
BasicDisplay::draw_text8(const int   x_,
                         const int   y_,
                         const char *str_)
{
  Err err;
  GrafCon gcon;
  Item bitmapItem;

  gcon.gc_PenX = x_;
  gcon.gc_PenY = y_;

  bitmapItem = sc->sc_BitmapItems[_screen];

  err = DrawText8(&gcon,bitmapItem,(const u8*)str_);

  return 0;
}

Err
BasicDisplay::draw_printf(const int x_,
                          const int y_,
                          const char *fmt_,
                          ...)
{
  va_list args;
  char strbuf[256];

  va_start(args,fmt_);
  vsprintf(strbuf,fmt_,args);
  va_end(args);

  return draw_text8(x_,y_,strbuf);
}

Err
BasicDisplay::draw_vprintf(const int   x_,
                           const int   y_,
                           const char *fmt_,
                           va_list     args_)
{
  char strbuf[256];

  vsprintf(strbuf,fmt_,args_);

  return draw_text8(x_,y_,strbuf);
}