#include "ray.h"
#include "globals.h"
#include "prevarr.h"
#include "scrconf.h"

BOOL prev_loaded=FALSE;

void Setup_Prev_Arrays() {
   Clear_Prev_Arrays();
   prev_colors=(PUCHAR)NewPtr(Get_Phys_Screen_Width() * sizeof (UCHAR));
   win_tops=(PSHORT)NewPtr(Get_Phys_Screen_Width() * sizeof(short));
   win_bottoms=(PSHORT)NewPtr(Get_Phys_Screen_Width() * sizeof(short));
   prev_loaded=TRUE;
}

void Clear_Prev_Arrays() {
   if (prev_loaded) {
      DelPtr(prev_colors);
      DelPtr(win_tops);
      DelPtr(win_bottoms);
   }
}