devilutionX/Source/engine.cpp

//HEADER_GOES_HERE

#include "../types.h"

char gbPixelCol;  // automap pixel color 8-bit (palette entry)
int dword_52B970; // BOOLEAN flip - if y < x
int orgseed;      // weak
int sgnWidth;
int sglGameSeed; // weak
static CRITICAL_SECTION sgMemCrit;
int SeedCount;    // weak
int dword_52B99C; // BOOLEAN valid - if x/y are in bounds

const int rand_increment = 1;           // unused
const int rand_multiplier = 0x015A4E35; // unused

void __fastcall CelDrawDatOnly(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label6
		sub		edx, eax
		mov		ecx, eax
		shr		ecx, 1
		jnb		label3
		movsb
		jecxz	label5
	label3:
		shr		ecx, 1
		jnb		label4
		movsw
		jecxz	label5
	label4:
		rep movsd
	label5:
		or		edx, edx
		jz		label7
		jmp		label2
	label6:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label7:
		sub		edi, w
		cmp		ebx, esi
		jnz		label1
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	w = nWidth;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(width & 1) {
					dst[0] = src[0];
					src++;
					dst++;
				}
				width >>= 1;
				if(width & 1) {
					dst[0] = src[0];
					dst[1] = src[1];
					src += 2;
					dst += 2;
				}
				width >>= 1;
				for(; width; width--) {
					dst[0] = src[0];
					dst[1] = src[1];
					dst[2] = src[2];
					dst[3] = src[3];
					src += 4;
					dst += 4;
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}

void __fastcall CelDecodeOnly(int sx, int sy, BYTE *pCelBuff, int nCel, int nWidth)
{
	BYTE *tmp;
	DWORD *pFrameTable;

	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;
	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;

	tmp = (BYTE *)gpBuffer;
	pFrameTable = (DWORD *)pCelBuff;

	CelDrawDatOnly(
		&tmp[sx + screen_y_times_768[sy]],
		&pCelBuff[pFrameTable[nCel]],
		pFrameTable[nCel + 1] - pFrameTable[nCel],
		nWidth);
}

void __fastcall CelDecDatOnly(BYTE *pBuff, BYTE *pCelBuff, int nCel, int nWidth)
{
	DWORD *pFrameTable;

	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;
	/// ASSERT: assert(pBuff != NULL);
	if(!pBuff)
		return;

	pFrameTable = (DWORD *)pCelBuff;

	CelDrawDatOnly(
		pBuff,
		&pCelBuff[pFrameTable[nCel]],
		pFrameTable[nCel + 1] - pFrameTable[nCel],
		nWidth);
}

void __fastcall CelDrawHdrOnly(int sx, int sy, BYTE *pCelBuff, int nCel, int nWidth, int always_0, int dir)
{
	int v1, v2, nDataSize;
	BYTE *pRLEBytes, *tmp;
	DWORD *pFrameTable;

	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;
	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;

	pFrameTable = (DWORD *)pCelBuff;
	pRLEBytes = &pCelBuff[pFrameTable[nCel]];
	v1 = *(WORD *)&pRLEBytes[always_0];

	if(!v1)
		return;

	nDataSize = pFrameTable[nCel + 1] - pFrameTable[nCel];

	if(dir == 8)
		v2 = 0;
	else
		v2 = *(WORD *)&pRLEBytes[dir];
	if(v2)
		nDataSize = v2 - v1;
	else
		nDataSize -= v1;

	tmp = (BYTE *)gpBuffer;
	CelDrawDatOnly(
		&tmp[sx + screen_y_times_768[sy - 16 * always_0]],
		&pRLEBytes[v1],
		nDataSize,
		nWidth);
}

void __fastcall CelDecodeHdrOnly(BYTE *pBuff, BYTE *pCelBuff, int nCel, int nWidth, int always_0, int dir)
{
	int v1, v2, nDataSize;
	BYTE *pRLEBytes;
	DWORD *pFrameTable;

	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;
	/// ASSERT: assert(pBuff != NULL);
	if(!pBuff)
		return;

	pFrameTable = (DWORD *)pCelBuff;
	pRLEBytes = &pCelBuff[pFrameTable[nCel]];
	v1 = *(WORD *)&pRLEBytes[always_0];

	if(!v1)
		return;

	nDataSize = pFrameTable[nCel + 1] - pFrameTable[nCel];

	if(dir == 8)
		v2 = 0;
	else
		v2 = *(WORD *)&pRLEBytes[dir];
	if(v2)
		nDataSize = v2 - v1;
	else
		nDataSize -= v1;

	CelDrawDatOnly(pBuff, &pRLEBytes[v1], nDataSize, nWidth);
}

void __fastcall CelDecDatLightOnly(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;
	BYTE *tbl;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		eax, light_table_index
		shl		eax, 8
		add		eax, pLightTbl
		mov		tbl, eax
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label3
		push	ebx
		mov		ebx, tbl
		sub		edx, eax
		mov		ecx, eax
		push	edx
		call	CelDecDatLightEntry
		pop		edx
		pop		ebx
		or		edx, edx
		jnz		label2
		jmp		label4
	label3:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label4:
		sub		edi, w
		cmp		ebx, esi
		jnz		label1
		jmp		labexit
	}

	/* Assembly Macro */
	__asm {
	CelDecDatLightEntry:
		shr		cl, 1
		jnb		label5
		mov		dl, [esi]
		mov		dl, [ebx+edx]
		mov		[edi], dl
		add		esi, 1
		add		edi, 1
	label5:
		shr		cl, 1
		jnb		label6
		mov		dl, [esi]
		mov		ch, [ebx+edx]
		mov		[edi], ch
		mov		dl, [esi+1]
		mov		ch, [ebx+edx]
		mov		[edi+1], ch
		add		esi, 2
		add		edi, 2
	label6:
		test	cl, cl
		jz		labret
	label7:
		mov		eax, [esi]
		add		esi, 4
		mov		dl, al
		mov		ch, [ebx+edx]
		mov		dl, ah
		ror		eax, 10h
		mov		[edi], ch
		mov		ch, [ebx+edx]
		mov		dl, al
		mov		[edi+1], ch
		mov		ch, [ebx+edx]
		mov		dl, ah
		mov		[edi+2], ch
		mov		ch, [ebx+edx]
		mov		[edi+3], ch
		add		edi, 4
		dec		cl
		jnz		label7
	labret:
		retn
	}

	__asm {
	labexit:
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	tbl = (BYTE *)&pLightTbl[light_table_index * 256];
	w = nWidth;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(width & 1) {
					dst[0] = tbl[src[0]];
					src++;
					dst++;
				}
				width >>= 1;
				if(width & 1) {
					dst[0] = tbl[src[0]];
					dst[1] = tbl[src[1]];
					src += 2;
					dst += 2;
				}
				width >>= 1;
				for(; width; width--) {
					dst[0] = tbl[src[0]];
					dst[1] = tbl[src[1]];
					dst[2] = tbl[src[2]];
					dst[3] = tbl[src[3]];
					src += 4;
					dst += 4;
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall CelDecDatLightTrans(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;
	BOOL shift;
	BYTE *tbl;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		eax, light_table_index
		shl		eax, 8
		add		eax, pLightTbl
		mov		tbl, eax
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
		mov		eax, edi
		and		eax, 1
		mov		shift, eax
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label9
		push	ebx
		mov		ebx, tbl
		sub		edx, eax
		mov		ecx, eax
		mov		eax, edi
		and		eax, 1
		cmp		eax, shift
		jnz		label5
		shr		ecx, 1
		jnb		label3
		inc		esi
		inc		edi
		jecxz	label8
		jmp		label6
	label3:
		shr		ecx, 1
		jnb		label4
		inc		esi
		inc		edi
		lodsb
		xlat
		stosb
		jecxz	label8
	label4:
		lodsd
		inc		edi
		ror		eax, 8
		xlat
		stosb
		ror		eax, 10h
		inc		edi
		xlat
		stosb
		loop	label4
		jmp		label8
	label5:
		shr		ecx, 1
		jnb		label6
		lodsb
		xlat
		stosb
		jecxz	label8
		jmp		label3
	label6:
		shr		ecx, 1
		jnb		label7
		lodsb
		xlat
		stosb
		inc		esi
		inc		edi
		jecxz	label8
	label7:
		lodsd
		xlat
		stosb
		inc		edi
		ror		eax, 10h
		xlat
		stosb
		inc		edi
		loop	label7
	label8:
		pop		ebx
		or		edx, edx
		jz		label10
		jmp		label2
	label9:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label10:
		sub		edi, w
		mov		eax, shift
		inc		eax
		and		eax, 1
		mov		shift, eax
		cmp		ebx, esi
		jnz		label1
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	tbl = (BYTE *)&pLightTbl[light_table_index * 256];
	w = nWidth;
	shift = (BYTE)dst & 1;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w, shift = (shift + 1) & 1) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(((BYTE)dst & 1) == shift) {
					if(!(width & 1)) {
						goto L_ODD;
					} else {
						src++;
						dst++;
L_EVEN:
						width >>= 1;
						if(width & 1) {
							dst[0] = tbl[src[0]];
							src += 2;
							dst += 2;
						}
						width >>= 1;
						for(; width; width--) {
							dst[0] = tbl[src[0]];
							dst[2] = tbl[src[2]];
							src += 4;
							dst += 4;
						}
					}
				} else {
					if(!(width & 1)) {
						goto L_EVEN;
					} else {
						dst[0] = tbl[src[0]];
						src++;
						dst++;
L_ODD:
						width >>= 1;
						if(width & 1) {
							dst[1] = tbl[src[1]];
							src += 2;
							dst += 2;
						}
						width >>= 1;
						for(; width; width--) {
							dst[1] = tbl[src[1]];
							dst[3] = tbl[src[3]];
							src += 4;
							dst += 4;
						}
					}
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall CelDecodeLightOnly(int sx, int sy, BYTE *pCelBuff, int nCel, int nWidth)
{
	int nDataSize;
	BYTE *pDecodeTo, *pRLEBytes, *tmp;
	DWORD *pFrameTable;

	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;
	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;

	tmp = (BYTE *)gpBuffer;
	pFrameTable = (DWORD *)pCelBuff;

	nDataSize = pFrameTable[nCel + 1] - pFrameTable[nCel];
	pRLEBytes = &pCelBuff[pFrameTable[nCel]];
	pDecodeTo = &tmp[sx + screen_y_times_768[sy]];

	if(light_table_index)
		CelDecDatLightOnly(pDecodeTo, pRLEBytes, nDataSize, nWidth);
	else
		CelDrawDatOnly(pDecodeTo, pRLEBytes, nDataSize, nWidth);
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall CelDecodeHdrLightOnly(int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int always_0, int direction)
{
	int v7;        // esi
	char *v8;      // ecx
	int v9;        // edi
	char *v10;     // edx
	int v11;       // ebx
	int v12;       // ebx
	char *v13;     // edx
	char *v14;     // ecx
	int v15;       // [esp+Ch] [ebp-4h]
	char *cel_buf; // [esp+18h] [ebp+8h]

	v7 = screen_y;
	v15 = screen_x;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			v9 = *(_DWORD *)&pCelBuff[4 * frame];
			v10 = &pCelBuff[v9];
			v11 = *(unsigned short *)&pCelBuff[v9 + always_0];
			cel_buf = (char *)*(unsigned short *)&pCelBuff[v9 + always_0];
			if (v11) {
				if (direction != 8 && *(_WORD *)&v10[direction])
					v12 = *(unsigned short *)&v10[direction] - (_DWORD)cel_buf;
				else
					v12 = *(_DWORD *)&v8[4 * frame + 4] - v9 - (_DWORD)cel_buf;
				v13 = &v10[(_DWORD)cel_buf];
				v14 = (char *)gpBuffer + screen_y_times_768[v7 - 16 * always_0] + v15;
				if (light_table_index)
					CelDecDatLightOnly((BYTE *)v14, (BYTE *)v13, v12, frame_width);
				else
					CelDrawDatOnly((BYTE *)v14, (BYTE *)v13, v12, frame_width);
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall CelDecodeHdrLightTrans(char *pBuff, char *pCelBuff, int frame, int frame_width, int always_0, int direction)
{
	char *v6;  // eax
	int v7;    // esi
	char *v8;  // edx
	int v9;    // ebx
	int v10;   // eax
	int v11;   // eax
	char *v12; // edx

	v6 = pCelBuff;
	if (pCelBuff) {
		if (pBuff) {
			v7 = *(_DWORD *)&pCelBuff[4 * frame];
			v8 = &pCelBuff[v7];
			v9 = *(unsigned short *)&v6[v7 + always_0];
			if (*(_WORD *)&v6[v7 + always_0]) {
				v10 = *(_DWORD *)&v6[4 * frame + 4] - v7;
				if (direction != 8 && *(_WORD *)&v8[direction])
					v11 = *(unsigned short *)&v8[direction] - v9;
				else
					v11 = v10 - v9;
				v12 = &v8[v9];
				if (cel_transparency_active) {
					CelDecDatLightTrans((BYTE *)pBuff, (BYTE *)v12, v11, frame_width);
				} else if (light_table_index) {
					CelDecDatLightOnly((BYTE *)pBuff, (BYTE *)v12, v11, frame_width);
				} else {
					CelDrawDatOnly((BYTE *)pBuff, (BYTE *)v12, v11, frame_width);
				}
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;
// 69CF94: using guessed type int cel_transparency_active;

void __fastcall CelDrawHdrLightRed(int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int always_0, int direction, char always_1)
{
	char *v8;       // esi
	int v9;         // ebx
	int v10;        // eax
	char *v11;      // edi
	int v12;        // ecx
	int v13;        // esi
	int v14;        // eax
	int v15;        // eax
	_BYTE *v16;     // esi
	char *v17;      // edi
	int v18;        // edx
	int v19;        // eax
	int v20;        // ecx
	int v21;        // [esp+Ch] [ebp-4h]
	char *v22;      // [esp+Ch] [ebp-4h]
	char *cel_buf;  // [esp+18h] [ebp+8h]
	char *cel_bufa; // [esp+18h] [ebp+8h]
	int framea;     // [esp+1Ch] [ebp+Ch]
	int always_0a;  // [esp+24h] [ebp+14h]
	int directiona; // [esp+28h] [ebp+18h]

	v21 = screen_x;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			v9 = *(_DWORD *)&pCelBuff[4 * frame];
			v10 = always_0;
			v11 = &pCelBuff[v9];
			v12 = *(unsigned short *)&pCelBuff[v9 + always_0];
			cel_buf = (char *)*(unsigned short *)&pCelBuff[v9 + always_0];
			if (v12) {
				v13 = *(_DWORD *)&v8[4 * frame + 4] - v9;
				if (direction != 8 && *(_WORD *)&v11[direction])
					always_0a = *(unsigned short *)&v11[direction] - (_DWORD)cel_buf;
				else
					always_0a = v13 - (_DWORD)cel_buf;
				directiona = (int)&v11[(_DWORD)cel_buf];
				cel_bufa = (char *)gpBuffer + screen_y_times_768[screen_y - 16 * v10] + v21;
				v14 = -(light4flag != 0);
				_LOWORD(v14) = v14 & 0xF400;
				v15 = v14 + 4096;
				framea = v15;
				if (always_1 == 2) {
					v15 += 256;
					framea = v15;
				}
				if (always_1 >= 4)
					framea = v15 + (always_1 << 8) - 256;
				v22 = &pLightTbl[framea];
				v16 = (_BYTE *)directiona;
				v17 = cel_bufa;
				do {
					v18 = frame_width;
					do {
						while (1) {
							v19 = (unsigned char)*v16++;
							if ((v19 & 0x80u) == 0)
								break;
							_LOBYTE(v19) = -(char)v19;
							v17 += v19;
							v18 -= v19;
							if (!v18)
								goto LABEL_20;
						}
						v18 -= v19;
						v20 = v19;
						do {
							_LOBYTE(v19) = *v16++;
							*v17 = v22[v19];
							--v20;
							++v17;
						} while (v20);
					} while (v18);
				LABEL_20:
					v17 += -frame_width - 768;
				} while ((_BYTE *)(directiona + always_0a) != v16);
			}
		}
	}
}
// 525728: using guessed type int light4flag;

void __fastcall Cel2DecDatOnly(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;
	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label7
		sub		edx, eax
		cmp		edi, gpBufEnd
		jb		label3
		add		esi, eax
		add		edi, eax
		jmp		label6
	label3:
		mov		ecx, eax
		shr		ecx, 1
		jnb		label4
		movsb
		jecxz	label6
	label4:
		shr		ecx, 1
		jnb		label5
		movsw
		jecxz	label6
	label5:
		rep movsd
	label6:
		or		edx, edx
		jz		label8
		jmp		label2
	label7:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label8:
		sub		edi, w
		cmp		ebx, esi
		jnz		label1
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	w = nWidth;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(dst < gpBufEnd) {
					if(width & 1) {
						dst[0] = src[0];
						src++;
						dst++;
					}
					width >>= 1;
					if(width & 1) {
						dst[0] = src[0];
						dst[1] = src[1];
						src += 2;
						dst += 2;
					}
					width >>= 1;
					for(; width; width--) {
						dst[0] = src[0];
						dst[1] = src[1];
						dst[2] = src[2];
						dst[3] = src[3];
						src += 4;
						dst += 4;
					}
				} else {
					src += width;
					dst += width;
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cel2DrawHdrOnly(int sx, int sy, BYTE *pCelBuff, int nCel, int nWidth, int always_0, int dir)
{
	int v1, v2, nDataSize;
	BYTE *pRLEBytes, *tmp;
	DWORD *pFrameTable;

	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;
	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;

	pFrameTable = (DWORD *)pCelBuff;
	pRLEBytes = &pCelBuff[pFrameTable[nCel]];
	v1 = *(WORD *)&pRLEBytes[always_0];

	if(!v1)
		return;

	nDataSize = pFrameTable[nCel + 1] - pFrameTable[nCel];

	if(dir == 8)
		v2 = 0;
	else
		v2 = *(WORD *)&pRLEBytes[dir];
	if(v2)
		nDataSize = v2 - v1;
	else
		nDataSize -= v1;

	tmp = (BYTE *)gpBuffer;
	Cel2DecDatOnly(
		&tmp[sx + screen_y_times_768[sy - 16 * always_0]],
		&pRLEBytes[v1],
		nDataSize,
		nWidth);
}

void __fastcall Cel2DecodeHdrOnly(BYTE *pBuff, BYTE *pCelBuff, int nCel, int nWidth, int always_0, int dir)
{
	int v1, v2, nDataSize;
	BYTE *pRLEBytes;
	DWORD *pFrameTable;

	/// ASSERT: assert(pCelBuff != NULL);
	if(!pCelBuff)
		return;
	/// ASSERT: assert(pBuff != NULL);
	if(!pBuff)
		return;

	pFrameTable = (DWORD *)pCelBuff;
	pRLEBytes = &pCelBuff[pFrameTable[nCel]];
	v1 = *(WORD *)&pRLEBytes[always_0];

	if(!v1)
		return;

	nDataSize = pFrameTable[nCel + 1] - pFrameTable[nCel];

	v2 = *(WORD *)&pRLEBytes[dir];
	if(dir == 8)
		v2 = 0;
	if(v2)
		nDataSize = v2 - v1;
	else
		nDataSize -= v1;

	Cel2DecDatOnly(pBuff, &pRLEBytes[v1], nDataSize, nWidth);
}

void __fastcall Cel2DecDatLightOnly(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;
	BYTE *tbl;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;
	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		eax, light_table_index
		shl		eax, 8
		add		eax, pLightTbl
		mov		tbl, eax
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label5
		push	ebx
		mov		ebx, tbl
		sub		edx, eax
		cmp		edi, gpBufEnd
		jb		label3
		add		esi, eax
		add		edi, eax
		jmp		label4
	label3:
		mov		ecx, eax
		push	edx
		call	Cel2DecDatLightEntry
		pop		edx
	label4:
		pop		ebx
		or		edx, edx
		jz		label6
		jmp		label2
	label5:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label6:
		sub		edi, w
		cmp		ebx, esi
		jnz		label1
		jmp		labexit
	}

	/* Assembly Macro */
	__asm {
	Cel2DecDatLightEntry:
		shr		cl, 1
		jnb		label7
		mov		dl, [esi]
		mov		dl, [ebx+edx]
		mov		[edi], dl
		add		esi, 1
		add		edi, 1
	label7:
		shr		cl, 1
		jnb		label8
		mov		dl, [esi]
		mov		ch, [ebx+edx]
		mov		[edi], ch
		mov		dl, [esi+1]
		mov		ch, [ebx+edx]
		mov		[edi+1], ch
		add		esi, 2
		add		edi, 2
	label8:
		test	cl, cl
		jz		labret
	label9:
		mov		eax, [esi]
		add		esi, 4
		mov		dl, al
		mov		ch, [ebx+edx]
		mov		dl, ah
		ror		eax, 10h
		mov		[edi], ch
		mov		ch, [ebx+edx]
		mov		dl, al
		mov		[edi+1], ch
		mov		ch, [ebx+edx]
		mov		dl, ah
		mov		[edi+2], ch
		mov		ch, [ebx+edx]
		mov		[edi+3], ch
		add		edi, 4
		dec		cl
		jnz		label9
	labret:
		retn
	}

	__asm {
	labexit:
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	tbl = (BYTE *)&pLightTbl[light_table_index * 256];
	w = nWidth;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(dst < gpBufEnd) {
					if(width & 1) {
						dst[0] = tbl[src[0]];
						src++;
						dst++;
					}
					width >>= 1;
					if(width & 1) {
						dst[0] = tbl[src[0]];
						dst[1] = tbl[src[1]];
						src += 2;
						dst += 2;
					}
					width >>= 1;
					for(; width; width--) {
						dst[0] = tbl[src[0]];
						dst[1] = tbl[src[1]];
						dst[2] = tbl[src[2]];
						dst[3] = tbl[src[3]];
						src += 4;
						dst += 4;
					}
				} else {
					src += width;
					dst += width;
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}
// 69BEF8: using guessed type int light_table_index;
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cel2DecDatLightTrans(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth)
{
	int w;
	BOOL shift;
	BYTE *tbl;

	/// ASSERT: assert(pDecodeTo != NULL);
	if(!pDecodeTo)
		return;
	/// ASSERT: assert(pRLEBytes != NULL);
	if(!pRLEBytes)
		return;
	/// ASSERT: assert(gpBuffer);
	if(!gpBuffer)
		return;

#if (_MSC_VER >= 800) && (_MSC_VER <= 1200)
	__asm {
		mov		eax, light_table_index
		shl		eax, 8
		add		eax, pLightTbl
		mov		tbl, eax
		mov		esi, pRLEBytes
		mov		edi, pDecodeTo
		mov		eax, 768
		add		eax, nWidth
		mov		w, eax
		mov		ebx, nDataSize
		add		ebx, esi
		mov		eax, edi
		and		eax, 1
		mov		shift, eax
	label1:
		mov		edx, nWidth
	label2:
		xor		eax, eax
		lodsb
		or		al, al
		js		label10
		push	ebx
		mov		ebx, tbl
		sub		edx, eax
		cmp		edi, gpBufEnd
		jb		label3
		add		esi, eax
		add		edi, eax
		jmp		label9
	label3:
		mov		ecx, eax
		mov		eax, edi
		and		eax, 1
		cmp		eax, shift
		jnz		label6
		shr		ecx, 1
		jnb		label4
		inc		esi
		inc		edi
		jecxz	label9
		jmp		label7
	label4:
		shr		ecx, 1
		jnb		label5
		inc		esi
		inc		edi
		lodsb
		xlat
		stosb
		jecxz	label9
	label5:
		lodsd
		inc		edi
		ror		eax, 8
		xlat
		stosb
		ror		eax, 10h
		inc		edi
		xlat
		stosb
		loop	label5
		jmp		label9
	label6:
		shr		ecx, 1
		jnb		label7
		lodsb
		xlat
		stosb
		jecxz	label9
		jmp		label4
	label7:
		shr		ecx, 1
		jnb		label8
		lodsb
		xlat
		stosb
		inc		esi
		inc		edi
		jecxz	label9
	label8:
		lodsd
		xlat
		stosb
		inc		edi
		ror		eax, 10h
		xlat
		stosb
		inc		edi
		loop	label8
	label9:
		pop		ebx
		or		edx, edx
		jz		label11
		jmp		label2
	label10:
		neg		al
		add		edi, eax
		sub		edx, eax
		jnz		label2
	label11:
		sub		edi, w
		mov		eax, shift
		inc		eax
		and		eax, 1
		mov		shift, eax
		cmp		ebx, esi
		jnz		label1
	}
#else
	int i;
	BYTE width;
	BYTE *src, *dst;

	src = pRLEBytes;
	dst = pDecodeTo;
	tbl = (BYTE *)&pLightTbl[light_table_index * 256];
	w = nWidth;
	shift = (BYTE)dst & 1;

	for(; src != &pRLEBytes[nDataSize]; dst -= 768 + w, shift = (shift + 1) & 1) {
		for(i = w; i;) {
			width = *src++;
			if(!(width & 0x80)) {
				i -= width;
				if(dst < gpBufEnd) {
					if(((BYTE)dst & 1) == shift) {
						if(!(width & 1)) {
							goto L_ODD;
						} else {
							src++;
							dst++;
L_EVEN:
							width >>= 1;
							if(width & 1) {
								dst[0] = tbl[src[0]];
								src += 2;
								dst += 2;
							}
							width >>= 1;
							for(; width; width--) {
								dst[0] = tbl[src[0]];
								dst[2] = tbl[src[2]];
								src += 4;
								dst += 4;
							}
						}
					} else {
						if(!(width & 1)) {
							goto L_EVEN;
						} else {
							dst[0] = tbl[src[0]];
							src++;
							dst++;
L_ODD:
							width >>= 1;
							if(width & 1) {
								dst[1] = tbl[src[1]];
								src += 2;
								dst += 2;
							}
							width >>= 1;
							for(; width; width--) {
								dst[1] = tbl[src[1]];
								dst[3] = tbl[src[3]];
								src += 4;
								dst += 4;
							}
						}
					}
				} else {
					src += width;
					dst += width;
				}
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
#endif
}
// 69BEF8: using guessed type int light_table_index;
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cel2DecodeHdrLight(int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int a6, int direction)
{
	int v7;        // esi
	char *v8;      // eax
	int v9;        // edi
	char *v10;     // edx
	int v11;       // ebx
	int v12;       // eax
	int v13;       // edi
	int v14;       // eax
	char *v15;     // edx
	char *v16;     // ecx
	char *cel_buf; // [esp+18h] [ebp+8h]

	v7 = screen_y;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			v9 = *(_DWORD *)&pCelBuff[4 * frame];
			v10 = &pCelBuff[v9];
			v11 = *(unsigned short *)&pCelBuff[v9 + a6];
			cel_buf = (char *)*(unsigned short *)&pCelBuff[v9 + a6];
			if (v11) {
				v12 = *(_DWORD *)&v8[4 * frame + 4] - v9;
				v13 = *(unsigned short *)&v10[direction];
				if (direction == 8)
					v13 = 0;
				if (v13)
					v14 = v13 - (_DWORD)cel_buf;
				else
					v14 = v12 - (_DWORD)cel_buf;
				v15 = &v10[(_DWORD)cel_buf];
				v16 = (char *)gpBuffer + screen_y_times_768[v7 - 16 * a6] + screen_x;
				if (light_table_index)
					Cel2DecDatLightOnly((BYTE *)v16, (BYTE *)v15, v14, frame_width);
				else
					Cel2DecDatOnly((BYTE *)v16, (BYTE *)v15, v14, frame_width);
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall Cel2DecodeLightTrans(char *dst_buf, char *pCelBuff, int frame, int frame_width, int a5, int direction)
{
	char *v6;  // eax
	int v7;    // esi
	char *v8;  // edx
	int v9;    // ebx
	int v10;   // eax
	int v11;   // esi
	int v12;   // eax
	char *v13; // edx

	v6 = pCelBuff;
	if (pCelBuff) {
		v7 = *(_DWORD *)&pCelBuff[4 * frame];
		v8 = &pCelBuff[v7];
		v9 = *(unsigned short *)&v6[v7 + a5];
		if (*(_WORD *)&v6[v7 + a5]) {
			v10 = *(_DWORD *)&v6[4 * frame + 4] - v7;
			v11 = *(unsigned short *)&v8[direction];
			if (direction == 8)
				v11 = 0;
			if (v11)
				v12 = v11 - v9;
			else
				v12 = v10 - v9;
			v13 = &v8[v9];
			if (cel_transparency_active) {
				Cel2DecDatLightTrans((BYTE *)dst_buf, (BYTE *)v13, v12, frame_width);
			} else if (light_table_index) {
				Cel2DecDatLightOnly((BYTE *)dst_buf, (BYTE *)v13, v12, frame_width);
			} else {
				Cel2DecDatOnly((BYTE *)dst_buf, (BYTE *)v13, v12, frame_width);
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;
// 69CF94: using guessed type int cel_transparency_active;

void __fastcall Cel2DrawHdrLightRed(int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int always_0, int direction, char always_1)
{
	char *v8;        // esi
	int v9;          // ebx
	char *v10;       // edi
	int v11;         // ecx
	int v12;         // esi
	int v13;         // eax
	int v14;         // eax
	_BYTE *v15;      // esi
	_BYTE *v16;      // edi
	int v17;         // ecx
	int v18;         // edx
	int v19;         // ecx
	int v20;         // eax
	_BYTE *v21;      // [esp-4h] [ebp-14h]
	int v22;         // [esp+Ch] [ebp-4h]
	char *cel_buf;   // [esp+18h] [ebp+8h]
	char *cel_bufa;  // [esp+18h] [ebp+8h]
	int framea;      // [esp+1Ch] [ebp+Ch]
	char *always_0a; // [esp+24h] [ebp+14h]
	int directiona;  // [esp+28h] [ebp+18h]

	v22 = screen_x;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			v9 = *(_DWORD *)&pCelBuff[4 * frame];
			v10 = &pCelBuff[v9];
			v11 = *(unsigned short *)&pCelBuff[v9 + always_0];
			cel_buf = (char *)*(unsigned short *)&pCelBuff[v9 + always_0];
			if (v11) {
				v12 = *(_DWORD *)&v8[4 * frame + 4] - v9;
				if (direction != 8 && *(_WORD *)&v10[direction])
					framea = *(unsigned short *)&v10[direction] - (_DWORD)cel_buf;
				else
					framea = v12 - (_DWORD)cel_buf;
				directiona = (int)&v10[(_DWORD)cel_buf];
				always_0a = (char *)gpBuffer + screen_y_times_768[screen_y - 16 * always_0] + v22;
				v13 = -(light4flag != 0);
				_LOWORD(v13) = v13 & 0xF400;
				v14 = v13 + 4096;
				if (always_1 == 2)
					v14 += 256;
				if (always_1 >= 4)
					v14 = v14 + (always_1 << 8) - 256;
				cel_bufa = &pLightTbl[v14];
				v15 = (_BYTE *)directiona;
				v16 = (unsigned char *)always_0a;
				v17 = directiona + framea;
				do {
					v21 = (_BYTE *)v17;
					v18 = frame_width;
					v19 = 0;
					do {
						while (1) {
							v20 = (unsigned char)*v15++;
							if ((v20 & 0x80u) == 0)
								break;
							_LOBYTE(v20) = -(char)v20;
							v16 += v20;
							v18 -= v20;
							if (!v18)
								goto LABEL_21;
						}
						v18 -= v20;
						if (v16 < gpBufEnd) {
							do {
								_LOBYTE(v19) = *v15++;
								*v16 = cel_bufa[v19];
								--v20;
								++v16;
							} while (v20);
						} else {
							v15 += v20;
							v16 += v20;
						}
					} while (v18);
				LABEL_21:
					v17 = (int)v21;
					v16 += -frame_width - 768;
				} while (v21 != v15);
			}
		}
	}
}
// 525728: using guessed type int light4flag;
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall CelDecodeRect(char *pBuff, int always_0, int dst_height, int dst_width, char *pCelBuff, int frame, int frame_width)
{
	char *v7;         // ebx
	char *v8;         // esi
	char *v9;         // edi
	int v10;          // ebx
	int v11;          // edx
	unsigned int v12; // eax
	unsigned int v13; // ecx
	char v14;         // cf
	unsigned int v15; // ecx
	int dst_widtha;   // [esp+14h] [ebp+Ch]

	if (pCelBuff && pBuff) {
		v7 = &pCelBuff[4 * frame];
		v8 = &pCelBuff[*(_DWORD *)v7];
		v9 = &pBuff[dst_width * dst_height + always_0];
		dst_widtha = frame_width + dst_width;
		v10 = (int)&v8[*((_DWORD *)v7 + 1) - *(_DWORD *)v7];
		do {
			v11 = frame_width;
			do {
				while (1) {
					v12 = (unsigned char)*v8++;
					if ((v12 & 0x80u) == 0)
						break;
					_LOBYTE(v12) = -(char)v12;
					v9 += v12;
					v11 -= v12;
					if (!v11)
						goto LABEL_14;
				}
				v11 -= v12;
				v13 = v12 >> 1;
				if (v12 & 1) {
					*v9++ = *v8++;
					if (!v13)
						continue;
				}
				v14 = v13 & 1;
				v15 = v12 >> 2;
				if (v14) {
					*(_WORD *)v9 = *(_WORD *)v8;
					v8 += 2;
					v9 += 2;
					if (!v15)
						continue;
				}
				qmemcpy(v9, v8, 4 * v15);
				v8 += 4 * v15;
				v9 += 4 * v15;
			} while (v11);
		LABEL_14:
			v9 -= dst_widtha;
		} while ((char *)v10 != v8);
	}
}

void __fastcall CelDecodeClr(BYTE colour, int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int a7, int direction)
{
	char *v8;  // ebx
	int v9;    // eax
	char *v10; // esi
	char *v11; // edi
	int v12;   // edx
	int v13;   // eax
	int v14;   // ecx
	char v15;  // al
	int v16;   // [esp+Ch] [ebp-10h]
	char *v17; // [esp+10h] [ebp-Ch]
	int v18;   // [esp+14h] [ebp-8h]
	char v19;  // [esp+18h] [ebp-4h]

	v19 = colour;
	if (pCelBuff) {
		if (gpBuffer) {
			v8 = &pCelBuff[4 * frame];
			v17 = &pCelBuff[*(_DWORD *)v8];
			v16 = *(unsigned short *)&v17[a7];
			if (*(_WORD *)&v17[a7]) {
				if (direction == 8)
					v9 = 0;
				else
					v9 = *(unsigned short *)&v17[direction];
				if (v9)
					v18 = v9 - v16;
				else
					v18 = *((_DWORD *)v8 + 1) - *(_DWORD *)v8 - v16;
				v10 = &v17[v16];
				v11 = (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a7] + screen_x;
				do {
					v12 = frame_width;
					do {
						while (1) {
							v13 = (unsigned char)*v10++;
							if ((v13 & 0x80u) == 0)
								break;
							_LOBYTE(v13) = -(char)v13;
							v11 += v13;
							v12 -= v13;
							if (!v12)
								goto LABEL_20;
						}
						v12 -= v13;
						v14 = v13;
						do {
							v15 = *v10++;
							if (v15) {
								*(v11 - 768) = v19;
								*(v11 - 1) = v19;
								v11[1] = v19;
								v11[768] = v19;
							}
							++v11;
							--v14;
						} while (v14);
					} while (v12);
				LABEL_20:
					v11 += -frame_width - 768;
				} while (&v17[v16 + v18] != v10);
			}
		}
	}
}

void __fastcall CelDrawHdrClrHL(char colour, int screen_x, int screen_y, char *pCelBuff, int frame, int frame_width, int a7, int direction)
{
	char *v8;  // ebx
	int v9;    // eax
	char *v10; // esi
	char *v11; // edi
	int v12;   // edx
	int v13;   // eax
	int v14;   // ecx
	char v15;  // al
	int v16;   // ecx
	char v17;  // al
	int v18;   // [esp+Ch] [ebp-10h]
	char *v19; // [esp+10h] [ebp-Ch]
	int v20;   // [esp+14h] [ebp-8h]
	char v21;  // [esp+18h] [ebp-4h]

	v21 = colour;
	if (pCelBuff) {
		if (gpBuffer) {
			v8 = &pCelBuff[4 * frame];
			v19 = &pCelBuff[*(_DWORD *)v8];
			v18 = *(unsigned short *)&v19[a7];
			if (*(_WORD *)&v19[a7]) {
				if (direction == 8)
					v9 = 0;
				else
					v9 = *(unsigned short *)&v19[direction];
				if (v9)
					v20 = v9 - v18;
				else
					v20 = *((_DWORD *)v8 + 1) - *(_DWORD *)v8 - v18;
				v10 = &v19[v18];
				v11 = (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a7] + screen_x;
				do {
					v12 = frame_width;
					do {
						while (1) {
							v13 = (unsigned char)*v10++;
							if ((v13 & 0x80u) == 0)
								break;
							_LOBYTE(v13) = -(char)v13;
							v11 += v13;
							v12 -= v13;
							if (!v12)
								goto LABEL_28;
						}
						v12 -= v13;
						if (v11 < (char *)gpBufEnd) {
							if (v11 >= (char *)gpBufEnd - 768) {
								v16 = v13;
								do {
									v17 = *v10++;
									if (v17) {
										*(v11 - 768) = v21;
										*(v11 - 1) = v21;
										v11[1] = v21;
									}
									++v11;
									--v16;
								} while (v16);
							} else {
								v14 = v13;
								do {
									v15 = *v10++;
									if (v15) {
										*(v11 - 768) = v21;
										*(v11 - 1) = v21;
										v11[1] = v21;
										v11[768] = v21;
									}
									++v11;
									--v14;
								} while (v14);
							}
						} else {
							v10 += v13;
							v11 += v13;
						}
					} while (v12);
				LABEL_28:
					v11 += -frame_width - 768;
				} while (&v19[v18 + v20] != v10);
			}
		}
	}
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall ENG_set_pixel(int screen_x, int screen_y, UCHAR pixel)
{
	UCHAR *v3; // edi

	if (screen_y >= 0 && screen_y < 640 && screen_x >= 64 && screen_x < 704) {
		v3 = (UCHAR *)gpBuffer + screen_y_times_768[screen_y] + screen_x;
		if (v3 < gpBufEnd)
			*v3 = pixel;
	}
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall engine_draw_pixel(int x, int y)
{
	_BYTE *v2; // eax

	if (dword_52B970) {
		if (!dword_52B99C || x >= 0 && x < 640 && y >= 64 && y < 704) {
			v2 = (unsigned char *)gpBuffer + screen_y_times_768[x] + y;
			goto LABEL_14;
		}
	} else if (!dword_52B99C || y >= 0 && y < 640 && x >= 64 && x < 704) {
		v2 = (unsigned char *)gpBuffer + screen_y_times_768[y] + x;
	LABEL_14:
		if (v2 < gpBufEnd)
			*v2 = gbPixelCol;
		return;
	}
}
// 52B96C: using guessed type char gbPixelCol;
// 52B970: using guessed type int dword_52B970;
// 52B99C: using guessed type int dword_52B99C;
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall DrawLine(int x0, int y0, int x1, int y1, UCHAR col)
{
	int v5;         // ST18_4
	int v6;         // ST2C_4
	int v7;         // ST20_4
	int v8;         // [esp+Ch] [ebp-48h]
	int v9;         // [esp+10h] [ebp-44h]
	int v10;        // [esp+14h] [ebp-40h]
	int v11;        // [esp+18h] [ebp-3Ch]
	signed int v12; // [esp+1Ch] [ebp-38h]
	int v13;        // [esp+20h] [ebp-34h]
	int v14;        // [esp+24h] [ebp-30h]
	int v15;        // [esp+28h] [ebp-2Ch]
	int y;          // [esp+2Ch] [ebp-28h]
	int ya;         // [esp+2Ch] [ebp-28h]
	int yb;         // [esp+2Ch] [ebp-28h]
	int yc;         // [esp+2Ch] [ebp-28h]
	int j;          // [esp+30h] [ebp-24h]
	int i;          // [esp+30h] [ebp-24h]
	int x;          // [esp+34h] [ebp-20h]
	int xa;         // [esp+34h] [ebp-20h]
	int xb;         // [esp+34h] [ebp-20h]
	int xc;         // [esp+34h] [ebp-20h]
	int xd;         // [esp+34h] [ebp-20h]
	int xe;         // [esp+34h] [ebp-20h]
	int xf;         // [esp+34h] [ebp-20h]
	int xg;         // [esp+34h] [ebp-20h]
	int xh;         // [esp+34h] [ebp-20h]
	int v31;        // [esp+38h] [ebp-1Ch]
	int v32;        // [esp+3Ch] [ebp-18h]
	int v33;        // [esp+3Ch] [ebp-18h]
	int v34;        // [esp+3Ch] [ebp-18h]
	signed int v35; // [esp+40h] [ebp-14h]
	signed int v36; // [esp+44h] [ebp-10h]
	int v37;        // [esp+48h] [ebp-Ch]
	int v38;        // [esp+48h] [ebp-Ch]
	int v39;        // [esp+4Ch] [ebp-8h]
	int v40;        // [esp+4Ch] [ebp-8h]
	int v41;        // [esp+50h] [ebp-4h]
	int x2a;        // [esp+5Ch] [ebp+8h]

	v8 = y0;
	v9 = x0;
	gbPixelCol = col;
	dword_52B99C = 0;
	if (x0 < 64 || x0 >= 704)
		dword_52B99C = 1;
	if (x1 < 64 || x1 >= 704)
		dword_52B99C = 1;
	if (y0 < 160 || y0 >= 512)
		dword_52B99C = 1;
	if (y1 < 160 || y1 >= 512)
		dword_52B99C = 1;
	if (x1 - x0 < 0)
		v36 = -1;
	else
		v36 = 1;
	v11 = v36 * (x1 - x0);
	if (y1 - y0 < 0)
		v35 = -1;
	else
		v35 = 1;
	v10 = v35 * (y1 - y0);
	if (v35 == v36)
		v12 = 1;
	else
		v12 = -1;
	if (v11 >= v10) {
		dword_52B970 = 0;
	} else {
		v8 = y0 ^ x0 ^ y0;
		v9 = v8 ^ y0 ^ x0;
		x2a = y1 ^ x1;
		y1 ^= x2a;
		x1 = y1 ^ x2a;
		v5 = v10 ^ v11;
		v10 ^= v5;
		v11 = v10 ^ v5;
		dword_52B970 = 1;
	}
	if (x1 >= v9) {
		x = v9;
		y = v8;
		v32 = x1;
		v13 = y1;
	} else {
		x = x1;
		y = y1;
		v32 = v9;
		v13 = v8;
	}
	v31 = (v11 - 1) / 4;
	v41 = (v11 - 1) % 4; /* (((v11 - 1) >> 31) ^ abs(v11 - 1) & 3) - ((v11 - 1) >> 31) */
	engine_draw_pixel(x, y);
	engine_draw_pixel(v32, v13);
	v14 = 4 * v10 - 2 * v11;
	if (v14 >= 0) {
		v40 = 2 * (v10 - v11);
		v15 = 4 * (v10 - v11);
		v38 = v15 + v11;
		for (i = 0; i < v31; ++i) {
			xe = x + 1;
			v34 = v32 - 1;
			if (v38 <= 0) {
				if (v40 <= v38) {
					y += v12;
					engine_draw_pixel(xe, y);
					x = xe + 1;
					engine_draw_pixel(x, y);
					v13 -= v12;
					engine_draw_pixel(v34, v13);
				} else {
					engine_draw_pixel(xe, y);
					y += v12;
					x = xe + 1;
					engine_draw_pixel(x, y);
					engine_draw_pixel(v34, v13);
					v13 -= v12;
				}
				v32 = v34 - 1;
				engine_draw_pixel(v32, v13);
				v38 += v14;
			} else {
				v6 = v12 + y;
				engine_draw_pixel(xe, v6);
				y = v12 + v6;
				x = xe + 1;
				engine_draw_pixel(x, y);
				v7 = v13 - v12;
				engine_draw_pixel(v34, v7);
				v13 = v7 - v12;
				v32 = v34 - 1;
				engine_draw_pixel(v32, v13);
				v38 += v15;
			}
		}
		if (v41) {
			if (v38 <= 0) {
				if (v40 <= v38) {
					yc = v12 + y;
					xh = x + 1;
					engine_draw_pixel(xh, yc);
					if (v41 > 1)
						engine_draw_pixel(xh + 1, yc);
					if (v41 > 2) {
						if (v40 >= v38)
							engine_draw_pixel(v32 - 1, v13);
						else
							engine_draw_pixel(v32 - 1, v13 - v12);
					}
				} else {
					xg = x + 1;
					engine_draw_pixel(xg, y);
					if (v41 > 1)
						engine_draw_pixel(xg + 1, v12 + y);
					if (v41 > 2)
						engine_draw_pixel(v32 - 1, v13);
				}
			} else {
				yb = v12 + y;
				xf = x + 1;
				engine_draw_pixel(xf, yb);
				if (v41 > 1)
					engine_draw_pixel(xf + 1, v12 + yb);
				if (v41 > 2)
					engine_draw_pixel(v32 - 1, v13 - v12);
			}
		}
	} else {
		v39 = 2 * v10;
		v37 = 4 * v10 - v11;
		for (j = 0; j < v31; ++j) {
			xa = x + 1;
			v33 = v32 - 1;
			if (v37 >= 0) {
				if (v39 <= v37) {
					y += v12;
					engine_draw_pixel(xa, y);
					x = xa + 1;
					engine_draw_pixel(x, y);
					v13 -= v12;
					engine_draw_pixel(v33, v13);
				} else {
					engine_draw_pixel(xa, y);
					y += v12;
					x = xa + 1;
					engine_draw_pixel(x, y);
					engine_draw_pixel(v33, v13);
					v13 -= v12;
				}
				v32 = v33 - 1;
				engine_draw_pixel(v32, v13);
				v37 += v14;
			} else {
				engine_draw_pixel(xa, y);
				x = xa + 1;
				engine_draw_pixel(x, y);
				engine_draw_pixel(v33, v13);
				v32 = v33 - 1;
				engine_draw_pixel(v32, v13);
				v37 += 4 * v10;
			}
		}
		if (v41) {
			if (v37 >= 0) {
				if (v39 <= v37) {
					ya = v12 + y;
					xd = x + 1;
					engine_draw_pixel(xd, ya);
					if (v41 > 1)
						engine_draw_pixel(xd + 1, ya);
					if (v41 > 2)
						engine_draw_pixel(v32 - 1, v13 - v12);
				} else {
					xc = x + 1;
					engine_draw_pixel(xc, y);
					if (v41 > 1)
						engine_draw_pixel(xc + 1, v12 + y);
					if (v41 > 2)
						engine_draw_pixel(v32 - 1, v13);
				}
			} else {
				xb = x + 1;
				engine_draw_pixel(xb, y);
				if (v41 > 1)
					engine_draw_pixel(xb + 1, y);
				if (v41 > 2)
					engine_draw_pixel(v32 - 1, v13);
			}
		}
	}
}
// 52B96C: using guessed type char gbPixelCol;
// 52B970: using guessed type int dword_52B970;
// 52B99C: using guessed type int dword_52B99C;

int __fastcall GetDirection(int x1, int y1, int x2, int y2)
{
	int mx, my;
	int md, ny;

	mx = x2 - x1;
	my = y2 - y1;

	if (mx >= 0) {
		if (my >= 0) {
			md = DIR_S;
			if (2 * mx < my)
				md = DIR_SW;
		} else {
			my = -my;
			md = DIR_E;
			if (2 * mx < my)
				md = DIR_NE;
		}
		if (2 * my < mx)
			return DIR_SE;
	} else {
		ny = -mx;
		if (my >= 0) {
			md = DIR_W;
			if (2 * ny < my)
				md = DIR_SW;
		} else {
			my = -my;
			md = DIR_N;
			if (2 * ny < my)
				md = DIR_NE;
		}
		if (2 * my < ny)
			return DIR_NW;
	}

	return md;
}

void __fastcall SetRndSeed(int s)
{
	SeedCount = 0;
	sglGameSeed = s;
	orgseed = s;
}
// 52B974: using guessed type int orgseed;
// 52B97C: using guessed type int sglGameSeed;
// 52B998: using guessed type int SeedCount;

int __cdecl GetRndSeed()
{
	SeedCount++;
	sglGameSeed = 0x015A4E35 * sglGameSeed + 1;
	return abs(sglGameSeed);
}
// 52B97C: using guessed type int sglGameSeed;
// 52B998: using guessed type int SeedCount;

int __fastcall random(BYTE idx, int v)
{
	if (v <= 0)
		return 0;
	if (v >= 0xFFFF)
		return GetRndSeed() % v;
	return (GetRndSeed() >> 16) % v;
}

#ifndef _MSC_VER
__attribute__((constructor))
#endif
static void
engine_c_init(void)
{
	mem_init_mutex();
	mem_atexit_mutex();
}

SEG_ALLOCATE(SEGMENT_C_INIT)
_PVFV engine_c_init_funcs[] = { &engine_c_init };

void __cdecl mem_init_mutex()
{
	InitializeCriticalSection(&sgMemCrit);
}

void __cdecl mem_atexit_mutex()
{
	atexit(mem_free_mutex);
}

void __cdecl mem_free_mutex(void)
{
	DeleteCriticalSection(&sgMemCrit);
}

unsigned char *__fastcall DiabloAllocPtr(int dwBytes)
{
	BYTE *buf;

	EnterCriticalSection(&sgMemCrit);
	buf = (BYTE *)SMemAlloc(dwBytes, "C:\\Src\\Diablo\\Source\\ENGINE.CPP", 2236, 0);
	LeaveCriticalSection(&sgMemCrit);

	if (buf == NULL) {
		ErrDlg(IDD_DIALOG2, GetLastError(), "C:\\Src\\Diablo\\Source\\ENGINE.CPP", 2269);
	}

	return buf;
}

void __fastcall mem_free_dbg(void *p)
{
	if (p) {
		EnterCriticalSection(&sgMemCrit);
		SMemFree(p, "C:\\Src\\Diablo\\Source\\ENGINE.CPP", 2317, 0);
		LeaveCriticalSection(&sgMemCrit);
	}
}

BYTE *__fastcall LoadFileInMem(char *pszName, int *pdwFileLen)
{
	HANDLE file;
	BYTE *buf;
	int fileLen;

	WOpenFile(pszName, &file, FALSE);
	fileLen = WGetFileSize(file, NULL);

	if (pdwFileLen)
		*pdwFileLen = fileLen;

	if (!fileLen)
		TermMsg("Zero length SFILE:\n%s", pszName);

	buf = (BYTE *)DiabloAllocPtr(fileLen);

	WReadFile(file, buf, fileLen);
	WCloseFile(file);

	return buf;
}

void __fastcall LoadFileWithMem(char *pszName, void *buf)
{
	char *v2; // ebx
	char *v3; // edi
	int v4;   // esi
	HANDLE a1; // [esp+Ch] [ebp-4h]

	v2 = (char *)buf;
	v3 = pszName;
	if (!buf)
		TermMsg("LoadFileWithMem(NULL):\n%s", pszName);
	WOpenFile(v3, &a1, 0);
	v4 = WGetFileSize(a1, 0);
	if (!v4)
		TermMsg("Zero length SFILE:\n%s", v3);
	WReadFile(a1, v2, v4);
	WCloseFile(a1);
}

void __fastcall Cl2ApplyTrans(unsigned char *p, unsigned char *ttbl, int last_frame)
{
	int v3;            // eax
	int v4;            // edi
	int v5;            // esi
	unsigned char *v6; // eax
	char v7;           // bl
	unsigned char v8;  // bl
	int v9;            // edi
	int i;             // [esp+0h] [ebp-4h]

	v3 = 1;
	for (i = 1; i <= last_frame; ++i) {
		v4 = *(_DWORD *)&p[4 * v3];
		v5 = *(_DWORD *)&p[4 * v3 + 4] - v4 - 10;
		v6 = &p[v4 + 10];
		while (v5) {
			v7 = *v6++;
			--v5;
			if (v7 < 0) {
				v8 = -v7;
				if ((char)v8 <= 65) {
					v5 -= (char)v8;
					if (v8) {
						v9 = v8;
						do {
							*v6 = ttbl[*v6];
							++v6;
							--v9;
						} while (v9);
					}
				} else {
					--v5;
					*v6 = ttbl[*v6];
					++v6;
				}
			}
		}
		v3 = i + 1;
	}
}

void __fastcall Cl2DecodeFrm1(int x, int y, char *pCelBuff, int nCel, int width, int dir1, int dir2)
{
	char *v8;        // edx
	char *v9;        // ecx
	int v10;         // ecx
	int v11;         // eax
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(char **)&pCelBuff[4 * nCel];
				pCelBuffa = v9;
				v10 = (int)&v9[(_DWORD)v8];
				if (*(_WORD *)(v10 + dir1)) {
					if (dir2 == 8 || (v11 = *(unsigned short *)(v10 + dir2), !*(_WORD *)(v10 + dir2)))
						v11 = *((_DWORD *)v8 + nCel + 1) - (_DWORD)pCelBuffa;
					Cl2DecDatFrm1(
					    (char *)gpBuffer + screen_y_times_768[y - 16 * dir1] + x,
					    (char *)(*(unsigned short *)(v10 + dir1) + v10),
					    v11 - *(unsigned short *)(v10 + dir1),
					    width);
				}
			}
		}
	}
}

void __fastcall Cl2DecDatFrm1(char *buffer, char *frame_content, int a3, int width) /* fix */
{
	char *v4; // esi
	char *v5; // edi
	int v6;   // eax
	int v7;   // ebx
	int v8;   // ecx
	char v9;  // dl
	char v10; // dl
	int v11;  // edx

	v4 = frame_content;
	v5 = buffer;
	v6 = 0;
	v7 = width;
	v8 = a3;
	do {
		_LOBYTE(v6) = *v4++;
		--v8;
		if ((v6 & 0x80u) == 0) {
			do {
				if (v6 <= v7) {
					v11 = v6;
					v5 += v6;
					v6 = 0;
				} else {
					v11 = v7;
					v5 += v7;
					v6 -= v7;
				}
				v7 -= v11;
				if (!v7) {
					v7 = width;
					v5 = &v5[-width - 768];
				}
			} while (v6);
		} else {
			_LOBYTE(v6) = -(char)v6;
			if ((char)v6 <= 65) {
				v8 -= v6;
				v7 -= v6;
				do {
					v10 = *v4++;
					*v5 = v10;
					--v6;
					++v5;
				} while (v6);
			} else {
				_LOBYTE(v6) = v6 - 65;
				--v8;
				v9 = *v4++;
				v7 -= v6;
				do {
					*v5 = v9;
					--v6;
					++v5;
				} while (v6);
			}
			if (!v7) {
				v7 = width;
				v5 = &v5[-width - 768];
			}
		}
	} while (v8);
}

void __fastcall Cl2DecodeFrm2(char colour, int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a7, int a8)
{
	int v8;   // ebx
	char *v9; // edx
	int v10;  // eax
	int v11;  // [esp+Ch] [ebp-8h]

	v11 = screen_x;
	if (gpBuffer) {
		if (pCelBuff) {
			if (nCel > 0) {
				v8 = *(_DWORD *)&pCelBuff[4 * nCel];
				v9 = &pCelBuff[v8];
				if (*(_WORD *)&pCelBuff[v8 + a7]) {
					if (a8 == 8 || (v10 = *(unsigned short *)&v9[a8], !*(_WORD *)&v9[a8]))
						v10 = *(_DWORD *)&pCelBuff[4 * nCel + 4] - v8;
					Cl2DecDatFrm2(
					    (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a7] + v11,
					    &v9[*(unsigned short *)&pCelBuff[v8 + a7]],
					    v10 - *(unsigned short *)&pCelBuff[v8 + a7],
					    frame_width,
					    colour);
				}
			}
		}
	}
}

void __fastcall Cl2DecDatFrm2(char *buffer, char *frame_content, int a3, int frame_width, char colour)
{
	char *v5; // esi
	char *v6; // edi
	int v7;   // eax
	int v8;   // ebx
	int v9;   // ecx
	char v10; // dl
	char v11; // dh
	char v12; // dh
	int v13;  // edx

	v5 = frame_content;
	v6 = buffer;
	v7 = 0;
	v8 = frame_width;
	v9 = a3;
	v10 = colour;
	do {
		_LOBYTE(v7) = *v5++;
		--v9;
		if ((v7 & 0x80u) != 0) {
			_LOBYTE(v7) = -(char)v7;
			if ((char)v7 <= 65) {
				v9 -= v7;
				v8 -= v7;
				do {
					v12 = *v5++;
					if (v12) {
						*(v6 - 1) = v10;
						v6[1] = v10;
						*(v6 - 768) = v10;
						v6[768] = v10;
					}
					--v7;
					++v6;
				} while (v7);
				goto LABEL_12;
			}
			_LOBYTE(v7) = v7 - 65;
			--v9;
			v11 = *v5++;
			if (v11) {
				*(v6 - 1) = v10;
				v8 -= v7;
				v6[v7] = v10;
				do {
					*(v6 - 768) = v10;
					v6[768] = v10;
					--v7;
					++v6;
				} while (v7);
			LABEL_12:
				if (!v8) {
					v8 = frame_width;
					v6 = &v6[-frame_width - 768];
				}
				continue;
			}
		}
		do {
			if (v7 <= v8) {
				v13 = v7;
				v6 += v7;
				v7 = 0;
			} else {
				v13 = v8;
				v6 += v8;
				v7 -= v8;
			}
			v8 -= v13;
			if (!v8) {
				v8 = frame_width;
				v6 = &v6[-frame_width - 768];
			}
		} while (v7);
		v10 = colour;
	} while (v9);
}

void __fastcall Cl2DecodeFrm3(int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a6, int a7, char a8)
{
	char *v8;        // edi
	int v9;          // ebx
	char *v10;       // esi
	int v11;         // eax
	int v12;         // eax
	char *v13;       // esi
	int v14;         // edi
	int v15;         // eax
	int v16;         // eax
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(_DWORD *)&pCelBuff[4 * nCel];
				v10 = &pCelBuff[v9];
				v11 = *(unsigned short *)&pCelBuff[v9 + a6];
				pCelBuffa = (char *)*(unsigned short *)&pCelBuff[v9 + a6];
				if (v11) {
					if (a7 == 8 || (v12 = *(unsigned short *)&v10[a7], !*(_WORD *)&v10[a7]))
						v12 = *(_DWORD *)&v8[4 * nCel + 4] - v9;
					v13 = &v10[(_DWORD)pCelBuffa];
					v14 = v12 - (_DWORD)pCelBuffa;
					v15 = -(light4flag != 0);
					_LOWORD(v15) = v15 & 0xF400;
					v16 = v15 + 4096;
					if (a8 == 2)
						v16 += 256;
					if (a8 >= 4)
						v16 = v16 + (a8 << 8) - 256;
					Cl2DecDatLightTbl1(
					    (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a6] + screen_x,
					    v13,
					    v14,
					    frame_width,
					    &pLightTbl[v16]);
				}
			}
		}
	}
}
// 525728: using guessed type int light4flag;

void __fastcall Cl2DecDatLightTbl1(char *a1, char *a2, int a3, int a4, char *unused_lindex) /* check 5th arg */
{
	char *v5; // esi
	char *v6; // edi
	int v7;   // ebx
	int v8;   // ecx
	int v9;   // eax
	int v10;  // edx
	char v11; // dl

	v5 = a2;
	v6 = a1;
	v7 = a4;
	v8 = a3;
	sgnWidth = a4;
	v9 = 0;
	v10 = 0;
	do {
		_LOBYTE(v9) = *v5++;
		--v8;
		if ((v9 & 0x80u) == 0) {
			do {
				if (v9 <= v7) {
					v10 = v9;
					v6 += v9;
					v9 = 0;
				} else {
					v10 = v7;
					v6 += v7;
					v9 -= v7;
				}
				v7 -= v10;
				if (!v7) {
					v7 = sgnWidth;
					v6 = &v6[-sgnWidth - 768];
				}
			} while (v9);
		} else {
			_LOBYTE(v9) = -(char)v9;
			if ((char)v9 <= 65) {
				v8 -= v9;
				v7 -= v9;
				do {
					_LOBYTE(v10) = *v5++;
					*v6 = unused_lindex[v10];
					--v9;
					++v6;
				} while (v9);
			} else {
				_LOBYTE(v9) = v9 - 65;
				--v8;
				v7 -= v9;
				_LOBYTE(v10) = *v5++;
				v11 = unused_lindex[v10];
				do {
					*v6 = v11;
					--v9;
					++v6;
				} while (v9);
			}
			if (!v7) {
				v7 = sgnWidth;
				v6 = &v6[-sgnWidth - 768];
			}
		}
	} while (v8);
}
// 52B978: using guessed type int sgnWidth;

void __fastcall Cl2DecodeLightTbl(int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a6, int a7)
{
	int v7;          // esi
	char *v8;        // edi
	int v9;          // ebx
	char *v10;       // edx
	int v11;         // eax
	int v12;         // eax
	int v13;         // eax
	char *v14;       // edx
	char *v15;       // ecx
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	v7 = screen_y;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(_DWORD *)&pCelBuff[4 * nCel];
				v10 = &pCelBuff[v9];
				v11 = *(unsigned short *)&pCelBuff[v9 + a6];
				pCelBuffa = (char *)*(unsigned short *)&pCelBuff[v9 + a6];
				if (v11) {
					if (a7 == 8 || (v12 = *(unsigned short *)&v10[a7], !*(_WORD *)&v10[a7]))
						v12 = *(_DWORD *)&v8[4 * nCel + 4] - v9;
					v13 = v12 - (_DWORD)pCelBuffa;
					v14 = &v10[(_DWORD)pCelBuffa];
					v15 = (char *)gpBuffer + screen_y_times_768[v7 - 16 * a6] + screen_x;
					if (light_table_index)
						Cl2DecDatLightTbl1(
						    v15,
						    v14,
						    v13,
						    frame_width,
						    &pLightTbl[256 * light_table_index]);
					else
						Cl2DecDatFrm1(v15, v14, v13, frame_width);
				}
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall Cl2DecodeFrm4(int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a6, int a7)
{
	int v7;          // ebx
	char *v8;        // edx
	char *v9;        // ecx
	int v10;         // ecx
	int v11;         // eax
	int v12;         // [esp+Ch] [ebp-4h]
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	v7 = screen_y;
	v12 = screen_x;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(char **)&pCelBuff[4 * nCel];
				pCelBuffa = v9;
				v10 = (int)&v9[(_DWORD)v8];
				if (*(_WORD *)(v10 + a6)) {
					if (a7 == 8 || (v11 = *(unsigned short *)(v10 + a7), !*(_WORD *)(v10 + a7)))
						v11 = *(_DWORD *)&v8[4 * nCel + 4] - (_DWORD)pCelBuffa;
					Cl2DecDatFrm4(
					    (char *)gpBuffer + screen_y_times_768[v7 - 16 * a6] + v12,
					    (char *)(*(unsigned short *)(v10 + a6) + v10),
					    v11 - *(unsigned short *)(v10 + a6),
					    frame_width);
				}
			}
		}
	}
}

void __fastcall Cl2DecDatFrm4(char *buffer, char *a2, int a3, int frame_width)
{
	char *v4; // esi
	char *v5; // edi
	int v6;   // eax
	int v7;   // ebx
	int v8;   // ecx
	char v9;  // dl
	char v10; // dl
	int v11;  // edx

	v4 = a2;
	v5 = buffer;
	v6 = 0;
	v7 = frame_width;
	v8 = a3;
	do {
		_LOBYTE(v6) = *v4++;
		--v8;
		if ((v6 & 0x80u) != 0) {
			_LOBYTE(v6) = -(char)v6;
			if ((char)v6 <= 65) {
				v8 -= v6;
				if (v5 < (char *)gpBufEnd) {
					v7 -= v6;
					do {
						v10 = *v4++;
						*v5 = v10;
						--v6;
						++v5;
					} while (v6);
					goto LABEL_12;
				}
				v4 += v6;
			} else {
				_LOBYTE(v6) = v6 - 65;
				--v8;
				v9 = *v4++;
				if (v5 < (char *)gpBufEnd) {
					v7 -= v6;
					do {
						*v5 = v9;
						--v6;
						++v5;
					} while (v6);
				LABEL_12:
					if (!v7) {
						v7 = frame_width;
						v5 = &v5[-frame_width - 768];
					}
					continue;
				}
			}
		}
		do {
			if (v6 <= v7) {
				v11 = v6;
				v5 += v6;
				v6 = 0;
			} else {
				v11 = v7;
				v5 += v7;
				v6 -= v7;
			}
			v7 -= v11;
			if (!v7) {
				v7 = frame_width;
				v5 = &v5[-frame_width - 768];
			}
		} while (v6);
	} while (v8);
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cl2DecodeClrHL(char colour, int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a7, int a8)
{
	int v8;   // ebx
	char *v9; // edx
	int v10;  // ecx
	int v11;  // eax
	int v12;  // [esp+Ch] [ebp-8h]
	char a5;  // [esp+10h] [ebp-4h]

	v12 = screen_x;
	a5 = colour;
	if (gpBuffer) {
		if (pCelBuff) {
			if (nCel > 0) {
				v8 = *(_DWORD *)&pCelBuff[4 * nCel];
				v9 = &pCelBuff[v8];
				v10 = *(unsigned short *)&pCelBuff[v8 + a7];
				if (*(_WORD *)&pCelBuff[v8 + a7]) {
					if (a8 == 8 || (v11 = *(unsigned short *)&v9[a8], !*(_WORD *)&v9[a8]))
						v11 = *(_DWORD *)&pCelBuff[4 * nCel + 4] - v8;
					gpBufEnd -= 768;
					Cl2DecDatClrHL(
					    (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a7] + v12,
					    &v9[v10],
					    v11 - v10,
					    frame_width,
					    a5);
					gpBufEnd += 768;
				}
			}
		}
	}
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cl2DecDatClrHL(char *dst_buf, char *frame_content, int a3, int frame_width, char colour)
{
	char *v5; // esi
	char *v6; // edi
	int v7;   // eax
	int v8;   // ebx
	int v9;   // ecx
	char v10; // dl
	char v11; // dh
	char v12; // dh
	int v13;  // edx

	v5 = frame_content;
	v6 = dst_buf;
	v7 = 0;
	v8 = frame_width;
	v9 = a3;
	v10 = colour;
	do {
		_LOBYTE(v7) = *v5++;
		--v9;
		if ((v7 & 0x80u) != 0) {
			_LOBYTE(v7) = -(char)v7;
			if ((char)v7 <= 65) {
				v9 -= v7;
				if (v6 < (char *)gpBufEnd) {
					v8 -= v7;
					do {
						v12 = *v5++;
						if (v12) {
							*(v6 - 1) = v10;
							v6[1] = v10;
							*(v6 - 768) = v10;
							v6[768] = v10;
						}
						--v7;
						++v6;
					} while (v7);
					goto LABEL_15;
				}
				v5 += v7;
			} else {
				_LOBYTE(v7) = v7 - 65;
				--v9;
				v11 = *v5++;
				if (v11 && v6 < (char *)gpBufEnd) {
					*(v6 - 1) = v10;
					v8 -= v7;
					v6[v7] = v10;
					do {
						*(v6 - 768) = v10;
						v6[768] = v10;
						--v7;
						++v6;
					} while (v7);
				LABEL_15:
					if (!v8) {
						v8 = frame_width;
						v6 = &v6[-frame_width - 768];
					}
					continue;
				}
			}
		}
		do {
			if (v7 <= v8) {
				v13 = v7;
				v6 += v7;
				v7 = 0;
			} else {
				v13 = v8;
				v6 += v8;
				v7 -= v8;
			}
			v8 -= v13;
			if (!v8) {
				v8 = frame_width;
				v6 = &v6[-frame_width - 768];
			}
		} while (v7);
		v10 = colour;
	} while (v9);
}
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cl2DecodeFrm5(int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a6, int a7, char a8)
{
	char *v8;        // edi
	int v9;          // ebx
	char *v10;       // esi
	int v11;         // eax
	int v12;         // eax
	char *v13;       // esi
	int v14;         // edi
	int v15;         // eax
	int v16;         // eax
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(_DWORD *)&pCelBuff[4 * nCel];
				v10 = &pCelBuff[v9];
				v11 = *(unsigned __int16 *)&pCelBuff[v9 + a6];
				pCelBuffa = (char *)*(unsigned __int16 *)&pCelBuff[v9 + a6];
				if (v11) {
					if (a7 == 8 || (v12 = *(unsigned __int16 *)&v10[a7], !*(_WORD *)&v10[a7]))
						v12 = *(_DWORD *)&v8[4 * nCel + 4] - v9;
					v13 = &v10[(_DWORD)pCelBuffa];
					v14 = v12 - (_DWORD)pCelBuffa;
					v15 = -(light4flag != 0);
					_LOWORD(v15) = v15 & 0xF400;
					v16 = v15 + 4096;
					if (a8 == 2)
						v16 += 256;
					if (a8 >= 4)
						v16 = v16 + (a8 << 8) - 256;
					Cl2DecDatLightTbl2(
					    (char *)gpBuffer + screen_y_times_768[screen_y - 16 * a6] + screen_x,
					    v13,
					    v14,
					    frame_width,
					    &pLightTbl[v16]);
				}
			}
		}
	}
}
// 525728: using guessed type int light4flag;

void __fastcall Cl2DecDatLightTbl2(char *dst_buf, char *a2, int a3, int frame_width, char *a5) /* check 5th arg */
{
	char *v5; // esi
	char *v6; // edi
	int v7;   // ebx
	int v8;   // ecx
	int v9;   // eax
	int v10;  // edx
	char v11; // dl

	v5 = a2;
	v6 = dst_buf;
	v7 = frame_width;
	v8 = a3;
	sgnWidth = frame_width;
	v9 = 0;
	v10 = 0;
	do {
		_LOBYTE(v9) = *v5++;
		--v8;
		if ((v9 & 0x80u) != 0) {
			_LOBYTE(v9) = -(char)v9;
			if ((char)v9 <= 65) {
				v8 -= v9;
				if (v6 < (char *)gpBufEnd) {
					v7 -= v9;
					do {
						_LOBYTE(v10) = *v5++;
						*v6 = a5[v10];
						--v9;
						++v6;
					} while (v9);
					goto LABEL_12;
				}
				v5 += v9;
			} else {
				_LOBYTE(v9) = v9 - 65;
				--v8;
				_LOBYTE(v10) = *v5++;
				v11 = a5[v10];
				if (v6 < (char *)gpBufEnd) {
					v7 -= v9;
					do {
						*v6 = v11;
						--v9;
						++v6;
					} while (v9);
				LABEL_12:
					if (!v7) {
						v7 = sgnWidth;
						v6 = &v6[-sgnWidth - 768];
					}
					continue;
				}
			}
		}
		do {
			if (v9 <= v7) {
				v10 = v9;
				v6 += v9;
				v9 = 0;
			} else {
				v10 = v7;
				v6 += v7;
				v9 -= v7;
			}
			v7 -= v10;
			if (!v7) {
				v7 = sgnWidth;
				v6 = &v6[-sgnWidth - 768];
			}
		} while (v9);
	} while (v8);
}
// 52B978: using guessed type int sgnWidth;
// 69CF0C: using guessed type int gpBufEnd;

void __fastcall Cl2DecodeFrm6(int screen_x, int screen_y, char *pCelBuff, int nCel, int frame_width, int a6, int a7)
{
	int v7;          // esi
	char *v8;        // edi
	int v9;          // ebx
	char *v10;       // edx
	int v11;         // eax
	int v12;         // eax
	int v13;         // eax
	char *v14;       // edx
	char *v15;       // ecx
	char *pCelBuffa; // [esp+18h] [ebp+8h]

	v7 = screen_y;
	if (gpBuffer) {
		v8 = pCelBuff;
		if (pCelBuff) {
			if (nCel > 0) {
				v9 = *(_DWORD *)&pCelBuff[4 * nCel];
				v10 = &pCelBuff[v9];
				v11 = *(unsigned short *)&pCelBuff[v9 + a6];
				pCelBuffa = (char *)*(unsigned short *)&pCelBuff[v9 + a6];
				if (v11) {
					if (a7 == 8 || (v12 = *(unsigned short *)&v10[a7], !*(_WORD *)&v10[a7]))
						v12 = *(_DWORD *)&v8[4 * nCel + 4] - v9;
					v13 = v12 - (_DWORD)pCelBuffa;
					v14 = &v10[(_DWORD)pCelBuffa];
					v15 = (char *)gpBuffer + screen_y_times_768[v7 - 16 * a6] + screen_x;
					if (light_table_index)
						Cl2DecDatLightTbl2(v15, v14, v13, frame_width, &pLightTbl[256 * light_table_index]);
					else
						Cl2DecDatFrm4(v15, v14, v13, frame_width);
				}
			}
		}
	}
}
// 69BEF8: using guessed type int light_table_index;

void __fastcall PlayInGameMovie(char *pszMovie)
{
	PaletteFadeOut(8);
	play_movie(pszMovie, 0);
	ClearScreenBuffer();
	drawpanflag = 255;
	scrollrt_draw_game_screen(1);
	PaletteFadeIn(8);
	drawpanflag = 255;
}
// 52571C: using guessed type int drawpanflag;