// C Header File
// Created 11/27/2002; 1:00:03 PMr

static inline void MakeRandomFloorOrCeiling(unsigned short *addr, short ceiling);
static inline void CycleCeilFloor(void);
static inline void SetUpCeilingAndFloor(void);

#ifndef __CEILFLOOR_H__
#define __CEILFLOOR_H__

static inline void MakeRandomFloorOrCeiling(unsigned short *addr, short ceiling)
{
	register GameGlobals *ggg asm("a4") = gg;
	short a,b;
	long temp;
	long _FFFFFFFF = 0xFFFFFFFFL;

	for (a=0;a<6;a++)
	{
		unsigned long* dest = (long*)addr+a*48+(ceiling?0:24);
		for (b=0;b<24;b++,dest++)
		{
			switch(ceiling?ggg->ceilmode:ggg->floormode)
			{
			case WHITELIGHT:
			*dest |= rand_long();
			break;
			case WHITEDARK:
			*(dest+288) |= rand_long();
			break;
			case WHITEBLACK:
			temp = rand_long();
			*dest |= temp;
			*(dest+288) |= temp;
			break;
			case LIGHT:
			*(dest) |= _FFFFFFFF;
			break;
			case LIGHTDARK:
			*(dest) |= _FFFFFFFF;
			temp = rand_long();
			*dest ^= temp;
			*(dest+288) |= temp;
			break;
			case LIGHTBLACK:
			*dest |= _FFFFFFFF;
			*(dest+288) |= rand_long();
			break;
			case DARK:
			*(dest+288) |= _FFFFFFFF;
			break;
			case DARKBLACK:
			*dest |= rand_long();
			*(dest+288) |= _FFFFFFFF;
			break;
			case BLACK:
			*(dest) |= _FFFFFFFF;
			*(dest+288) |= _FFFFFFFF;
			break;
			}
		}
	}
}

static inline void CycleCeilFloor(void)
{
	register GameGlobals *ggg asm("a4") = gg;
	fc->background = (unsigned short*)ggg->bg_img[ggg->bg_cycle];
	ggg->bg_cycle++;
	if(ggg->bg_cycle==BGMAX) ggg->bg_cycle=0;
}

static inline void SetUpCeilingAndFloor(void)
{
	register GameGlobals *ggg asm("a4") = gg;
	short a;
	for(a=0;a<BGMAX;a++)
	{
		memset(ggg->bg_img[a],0x00,1152*2);
		if(ggg->ceilmode>=WHITE)
		{
			MakeRandomFloorOrCeiling((unsigned short*)ggg->bg_img[a],/*ceiling*/TRUE);
		}
		else
		{
			short i;
			for(i=0;i<12*96;i+=96)
			{
				if(ggg->ceilmode==DARKSKY) memcpy((BYTE*)ggg->bg_img[a]+i*2,(BYTE*)darksky+i,96);
				else if(ggg->ceilmode==LIGHTSKY) memcpy((BYTE*)ggg->bg_img[a]+i*2,(BYTE*)lightsky+i,96);
				else if(ggg->ceilmode==MEDSKY) memcpy((BYTE*)ggg->bg_img[a]+i*2,(BYTE*)medsky+i,96);
				else if(ggg->ceilmode==STARSKY) memcpy((BYTE*)ggg->bg_img[a]+i*2,(BYTE*)starsky+i,96);
			}
		}
		MakeRandomFloorOrCeiling((unsigned short*)ggg->bg_img[a],/*floor*/FALSE);
	}
	fc->background = (unsigned short*)ggg->bg_img[0];
}

#endif