/*
 * UNPUBLISHED -- Rights  reserved  under  the  copyright  laws  of the
 * United States.  Use  of a copyright notice is precautionary only and
 * does not imply publication or disclosure.
 *
 * THIS DOCUMENTATION CONTAINS CONFIDENTIAL AND PROPRIETARY INFORMATION
 * OF    BLIZZARD   ENTERTAINMENT.    ANY   DUPLICATION,  MODIFICATION,
 * DISTRIBUTION, OR DISCLOSURE IS STRICTLY PROHIBITED WITHOUT THE PRIOR
 * EXPRESS WRITTEN PERMISSION OF BLIZZARD ENTERTAINMENT.
 */

#include "../types.h"

int qtexty; // weak
char *qtextptr;
int qtextSpd; // weak
char qtextflag; // weak
int scrolltexty; // weak
int sgLastScroll; // weak
void *pMedTextCels;
void *pTextBoxCels;

unsigned char mfontframe[127] =
{
	0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
	0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
	0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
	0,   0,   0,  37,  49,  38,   0,  39,  40,  47,
   42,  43,  41,  45,  52,  44,  53,  55,  36,  27,
   28,  29,  30,  31,  32,  33,  34,  35,  51,  50,
   48,  46,  49,  54,   0,   1,   2,   3,   4,   5,
	6,   7,   8,   9,  10,  11,  12,  13,  14,  15,
   16,  17,  18,  19,  20,  21,  22,  23,  24,  25,
   26,  42,   0,  43,   0,   0,   0,   1,   2,   3,
	4,   5,   6,   7,   8,   9,  10,  11,  12,  13,
   14,  15,  16,  17,  18,  19,  20,  21,  22,  23,
   24,  25,  26,  48,   0,  49,   0
};
unsigned char mfontkern[56] =
{
	5,  15,  10,  13,  14,  10,   9,  13,  11,   5,
	5,  11,  10,  16,  13,  16,  10,  15,  12,  10,
   14,  17,  17,  22,  17,  16,  11,   5,  11,  11,
   11,  10,  11,  11,  11,  11,  15,   5,  10,  18,
   15,   8,   6,   6,   7,  10,   9,   6,  10,  10,
	5,   5,   5,   5,  11,  12
};

/* rdata */

int qscroll_spd_tbl[9] = { 2, 4, 6, 8, 0, -1, -2, -3, -4 };

//----- (00428056) --------------------------------------------------------
void __cdecl FreeQuestText()
{
	void *v0; // ecx
	void *v1; // ecx

	v0 = pMedTextCels;
	pMedTextCels = 0;
	mem_free_dbg(v0);
	v1 = pTextBoxCels;
	pTextBoxCels = 0;
	mem_free_dbg(v1);
}

//----- (0042807A) --------------------------------------------------------
void __cdecl InitQuestText()
{
	unsigned char *v0; // eax

	pMedTextCels = LoadFileInMem("Data\\MedTextS.CEL", 0);
	v0 = LoadFileInMem("Data\\TextBox.CEL", 0);
	qtextflag = 0;
	pTextBoxCels = v0;
}
// 646D00: using guessed type char qtextflag;

//----- (004280A4) --------------------------------------------------------
void __fastcall InitQTextMsg(int m)
{
	if ( alltext[m].scrlltxt )
	{
		questlog = 0;
		qtextptr = alltext[m].txtstr;
		qtextflag = 1;
		qtexty = 500;
		sgLastScroll = qscroll_spd_tbl[alltext[m].txtspd - 1]; /* double check offset */
		scrolltexty = sgLastScroll;
		qtextSpd = GetTickCount();
	}
	PlaySFX(alltext[m].sfxnr);
}
// 646CF4: using guessed type int qtexty;
// 646CFC: using guessed type int qtextSpd;
// 646D00: using guessed type char qtextflag;
// 646D04: using guessed type int scrolltexty;
// 646D08: using guessed type int sgLastScroll;
// 69BD04: using guessed type int questlog;

//----- (00428104) --------------------------------------------------------
void __cdecl DrawQTextBack()
{
	char *v0; // edi
	signed int v1; // edx
	signed int v2; // ecx
	int v3; // edi
	signed int v4; // ecx
	_BYTE *v5; // edi
	signed int v6; // ecx

	CelDecodeOnly(88, 487, pTextBoxCels, 1, 591);
	v0 = &gpBuffer->row[324].pixels[27];
	v1 = 148;
	do
	{
		v2 = 292;
		do
		{
			*v0 = 0;
			v0 += 2;
			--v2;
		}
		while ( v2 );
		*v0 = 0;
		v3 = (int)(v0 - 1352);
		v4 = 292;
		do
		{
			v5 = (_BYTE *)(v3 + 1);
			*v5 = 0;
			v3 = (int)(v5 + 1);
			--v4;
		}
		while ( v4 );
		v0 = (char *)(v3 - 1352);
		--v1;
	}
	while ( v1 );
	v6 = 292;
	do
	{
		*v0 = 0;
		v0 += 2;
		--v6;
	}
	while ( v6 );
	*v0 = 0;
}

//----- (00428160) --------------------------------------------------------
void __fastcall PrintQTextChr(int screen_x, int screen_y, char *cel_buf, int frame)
{
	char *v4; // ebx
	char *v5; // esi
	char *v6; // edi
	int v7; // ebx
	signed int v8; // edx
	unsigned int v9; // eax
	unsigned int v10; // ecx
	char v11; // cf
	unsigned int v12; // ecx
	char *v13; // [esp+14h] [ebp-8h]
	char *v14; // [esp+18h] [ebp-4h]

	v13 = (char *)gpBuffer + screen_y_times_768[209];
	v14 = (char *)gpBuffer + screen_y_times_768[469];
	v4 = &cel_buf[4 * frame];
	v5 = &cel_buf[*(_DWORD *)v4];
	v6 = (char *)gpBuffer + screen_y_times_768[screen_y] + screen_x;
	v7 = (int)&v5[*((_DWORD *)v4 + 1) - *(_DWORD *)v4];
	do
	{
		v8 = 22;
		do
		{
			while ( 1 )
			{
				v9 = (unsigned char)*v5++;
				if ( (v9 & 0x80u) == 0 )
					break;
				_LOBYTE(v9) = -(char)v9;
				v6 += v9;
				v8 -= v9;
				if ( !v8 )
					goto LABEL_15;
			}
			v8 -= v9;
			if ( v6 < v13 || v6 > v14 )
			{
				v5 += v9;
				v6 += v9;
			}
			else
			{
				v10 = v9 >> 1;
				if ( !(v9 & 1) || (*v6 = *v5, ++v5, ++v6, v10) )
				{
					v11 = v10 & 1;
					v12 = v9 >> 2;
					if ( !v11 || (*(_WORD *)v6 = *(_WORD *)v5, v5 += 2, v6 += 2, v12) )
					{
						qmemcpy(v6, v5, 4 * v12);
						v5 += 4 * v12;
						v6 += 4 * v12;
					}
				}
			}
		}
		while ( v8 );
LABEL_15:
		v6 -= 790;
	}
	while ( (char *)v7 != v5 );
}

//----- (00428202) --------------------------------------------------------
void __cdecl DrawQText()
{
	char *v0; // edi
	signed int v1; // edx
	int v2; // ecx
	char *i; // esi
	unsigned char v4; // al
	unsigned char v5; // al
	char v6; // dl
	char *v7; // eax
	unsigned char v8; // al
	char *v9; // esi
	unsigned char v10; // bl
	DWORD v11; // eax
	char qstr[128]; // [esp+8h] [ebp-90h]
	char *v13; // [esp+88h] [ebp-10h]
	int v14; // [esp+8Ch] [ebp-Ch]
	int screen_y; // [esp+90h] [ebp-8h]
	int screen_x; // [esp+94h] [ebp-4h]

	DrawQTextBack();
	v0 = qtextptr;
	screen_x = 112;
	v13 = 0;
	screen_y = qtexty;
	v14 = 0;
	do
	{
		v1 = 0;
		v2 = 0;
		for ( i = v0; *i != 10; ++v2 )
		{
			if ( *i == 124 || v1 >= 543 )
				break;
			v4 = *i++;
			v5 = fontidx[v4];
			if ( v5 )
			{
				qstr[v2] = v5;
				v1 += mfontkern[mfontframe[v5]] + 2;
			}
			else
			{
				--v2;
			}
		}
		v6 = *i;
		v7 = &qstr[v2];
		qstr[v2] = 0;
		if ( v6 == 124 )
		{
			*v7 = 0;
			v14 = 1;
		}
		else if ( v6 != 10 )
		{
			while ( *v7 != 32 && v2 > 0 )
			{
				*v7 = 0;
				v7 = &qstr[--v2];
			}
		}
		v8 = qstr[0];
		if ( qstr[0] )
		{
			v9 = qstr;
			do
			{
				++v0;
				v10 = mfontframe[fontidx[v8]];
				if ( *v0 == 10 )
					++v0;
				if ( v10 )
					PrintQTextChr(screen_x, screen_y, (char *)pMedTextCels, v10);
				++v9;
				screen_x += mfontkern[v10] + 2;
				v8 = *v9;
			}
			while ( *v9 );
		}
		if ( !v13 )
			v13 = v0;
		screen_y += 38;
		screen_x = 112;
		if ( screen_y > 501 )
			v14 = 1;
	}
	while ( !v14 );
	v11 = GetTickCount();
	while ( 1 )
	{
		if ( sgLastScroll <= 0 )
		{
			qtexty = qtexty + sgLastScroll - 1;
			goto LABEL_33;
		}
		if ( --scrolltexty )
		{
			--qtexty;
LABEL_33:
			if ( scrolltexty )
				goto LABEL_35;
		}
		scrolltexty = sgLastScroll;
LABEL_35:
		if ( qtexty <= 209 )
			break;
		qtextSpd += 50;
		if ( v11 - qtextSpd >= 0x7FFFFFFF )
			return;
	}
	qtexty += 38;
	qtextptr = v13;
	if ( *v13 == 124 )
		qtextflag = 0;
}
// 646CF4: using guessed type int qtexty;
// 646CFC: using guessed type int qtextSpd;
// 646D00: using guessed type char qtextflag;
// 646D04: using guessed type int scrolltexty;
// 646D08: using guessed type int sgLastScroll;
// 428202: using guessed type char qstr[128];