scummvm/simon/simonitems.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001/2002 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */

// Item script opcodes for Simon1/Simon2
#include "stdafx.h"
#include "simon.h"

int SimonState::runScript() {
	byte opcode;
	bool flag, condition;

	do {
#ifdef DUMP_CONTINOUS_MAINSCRIPT
	dumpOpcode(_code_ptr);
#endif	
		
	opcode = getByte();
	if (opcode==0xFF)
		return 0;

	if (_run_script_return_1)
		return 1;

	/* Invert condition? */
	flag = false;
	if (opcode==0) {
		flag = true;
		opcode = getByte();
		if (opcode==0xFF)
			return 0;
	}

	condition = true;
	
	switch(opcode) {
	case 1: { /* ptrA parent is */
		condition = (getItem1Ptr()->parent == getNextItemID());
	} break;

	case 2: { /* ptrA parent is not */
		condition = (getItem1Ptr()->parent != getNextItemID());
	} break;

	case 5: {	/* parent is 1 */
		condition = (getNextItemPtr()->parent == getItem1ID());
	} break;

	case 6: { /* parent isnot 1 */
		condition = (getNextItemPtr()->parent != getItem1ID());
	} break;

	case 7: { /* parent is */
		Item *item = getNextItemPtr();
		condition = (item->parent == getNextItemID());
	} break;

	case 11: { /* is zero */
		condition = (getNextVarContents() == 0);
	} break;

	case 12: { /* isnot zero */
		condition = (getNextVarContents() != 0);
	} break;

	case 13: { /* equal */
		uint tmp = getNextVarContents();
		condition = (tmp == getVarOrWord());
	} break;

	case 14: { /* not equal */
		uint tmp = getNextVarContents();
		condition = (tmp != getVarOrWord());
	} break;

	case 15: { /* is greater */
		uint tmp = getNextVarContents();
		condition = (tmp > getVarOrWord());
	} break;

	case 16: { /* is less */
		uint tmp = getNextVarContents();
		condition = (tmp < getVarOrWord());
	} break;

	case 17: { /* is eq f */
		uint tmp = getNextVarContents();
		condition = (tmp == getNextVarContents());
	} break;

	case 18: { /* is not equal f */
		uint tmp = getNextVarContents();
		condition = (tmp != getNextVarContents());
	} break;

	case 19: { /* is greater f */
		uint tmp = getNextVarContents();
		condition = (tmp < getNextVarContents());
	} break;

	case 20: { /* is less f */
		uint tmp = getNextVarContents();
		condition = (tmp > getNextVarContents());
	} break;

	case 23: {
		condition = o_unk_23(getVarOrWord());
	} break;

	case 25: { /* has child of type 1 */
		condition = hasChildOfType1(getNextItemPtr());
	} break;
		
	case 26: { /* has child of type 2 */
		condition = hasChildOfType2(getNextItemPtr());
	} break;

	case 27: { /* item unk3 is */
		Item *item = getNextItemPtr();
		condition = ((uint)item->unk3 == getVarOrWord());
	} break;

	case 28: { /* item has prop */
		Child2 *child = findChildOfType2(getNextItemPtr());
		byte num = getVarOrByte();
		condition = child!=NULL && (child->avail_props & (1<<num)) != 0;
	} break;

	case 31: { /* set no parent */
		setItemParent(getNextItemPtr(), NULL);
	} break;

	case 33: { /* set item parent */
		Item *item = getNextItemPtr();
		setItemParent(item, getNextItemPtr());
	} break;

	case 36: { /* copy var */
		uint value = getNextVarContents();
		writeNextVarContents(value);
	} break;

	case 41: { /* zero var */
		writeNextVarContents(0);
	} break;

	case 42: { /* set var */
		uint var = getVarOrByte();
		writeVariable(var, getVarOrWord());
	} break;

	case 43: { /* add */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) + getVarOrWord());
	} break;

	case 44: { /* sub */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) - getVarOrWord());
	} break;

	case 45: { /* add f */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) + getNextVarContents());
	} break;

	case 46: { /* sub f */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) - getNextVarContents());
	} break;
			
	case 47: { /* mul */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) * getVarOrWord());
	} break;

	case 48: { /* div */
		uint var = getVarOrByte();
		int value = getVarOrWord();
		if (value == 0)
			error("Division by zero in div");
		writeVariable(var, readVariable(var) / value);
	} break;

	case 49: { /* mul f */
		uint var = getVarOrByte();
		writeVariable(var, readVariable(var) * getNextVarContents());
	} break;
		
	case 50: { /* div f */
		uint var = getVarOrByte();
		int value = getNextVarContents();
		if (value == 0)
			error("Division by zero in div f");
		writeVariable(var, readVariable(var) / value);
	} break;

	case 51: { /* mod */
		uint var = getVarOrByte();
		int value = getVarOrWord();
		if (value == 0)
			error("Division by zero in mod");
		writeVariable(var, readVariable(var) % value);
	} break;

	case 52: { /* mod f */
		uint var = getVarOrByte();
		int value = getNextVarContents();
		if (value == 0)
			error("Division by zero in mod f");
		writeVariable(var, readVariable(var) % value);
	} break;

	case 53: { /* random */
		uint var = getVarOrByte();
		uint value = (uint16)getVarOrWord();
		uint rand_value;
		
		for(;;) {
			uint value_2 = value;
			rand_value = rand() & 0x7FFF;

			if (value == 0)
				error("Invalid random range");
			
			value = 0x8000 / value;
			
			if (value == 0)
				error("Invalid random range");

			if (rand_value / value != value_2)
				break;
				
			value = value_2;
		}

		writeVariable(var, rand_value / value);
	} break;

	case 55: { /* set itemA parent */
		setItemParent(getItem1Ptr(), getNextItemPtr());
	} break;

	case 56: { /* set child2 fr bit */
		Child2 *child = findChildOfType2(getNextItemPtr());
		int value = getVarOrByte();
		if (child != NULL && value >= 0x10)
			child->avail_props |= 1<<value;
	} break;

	case 57: { /* clear child2 fr bit */
		Child2 *child = findChildOfType2(getNextItemPtr());
		int value = getVarOrByte();
		if (child != NULL && value >= 0x10)
			child->avail_props &= ~(1<<value);
	} break;

	case 58: { /* make siblings */
		Item *item = getNextItemPtr();
		setItemParent(item, derefItem(getNextItemPtr()->parent));
	} break;

	case 59: { /* item inc unk3 */
		Item *item = getNextItemPtr();
		if (item->unk3<=30000)
			setItemUnk3(item, item->unk3 + 1);
	} break;

	case 60: { /* item dec unk3 */
		Item *item = getNextItemPtr();
		if (item->unk3>=0)
			setItemUnk3(item, item->unk3 - 1);
	} break;

	case 61: { /* item set unk3 */
		Item *item = getNextItemPtr();
		int value = getVarOrWord();
		if (value<0) value = 0;
		if (value>30000) value = 30000;
		setItemUnk3(item, value);
	} break;
	
	case 62: { /* show int */
		showMessageFormat("%d", getNextVarContents());
	} break;

	case 63: { /* show string nl */
		showMessageFormat("%s\n", getStringPtrByID(getNextStringID()));
	} break;	

	case 64: { /* show string */
		showMessageFormat("%s", getStringPtrByID(getNextStringID()));
	} break;

	case 65: { /* add hit area */
		int id = getVarOrWord();
		int x = getVarOrWord();
		int y = getVarOrWord();
		int w = getVarOrWord();
		int h = getVarOrWord();
		int number = getVarOrByte();
		if (number < 20)
			addNewHitArea(id, x, y, w, h, (number<<8) + 129, 0xD0, &_dummy_item_2);
	} break;
	
	case 66: { /* set array 2 */
		uint var = getVarOrByte();
		uint string_id = getNextStringID();
		if (var < 20)
			_stringid_array_2[var] = string_id;
	} break;

	case 67: { /* set array 3 and 4 */
		if (_game == GAME_SIMON1WIN || _game&GAME_SIMON2) {
			uint var = getVarOrByte();
			uint string_id = getNextStringID();
			uint value = getNextWord();
			if (var < 20) {
				_stringid_array_3[var] = string_id;
				_array_4[var] = value;
			}
		} else {
			uint var = getVarOrByte();
			uint string_id = getNextStringID();
			if (var < 20) {
				_stringid_array_3[var] = string_id;
			}
		}
	} break;

	case 68: { /* exit interpreter */
		error("Exit interpreter opcode");
	} break;

	case 69: { /* return 1 */
		return 1;
	}

	case 70: { /* show string from array */
		const char *str = (const char*)getStringPtrByID(_stringid_array_3[getVarOrByte()]);

		if (_game & GAME_SIMON2) {
			writeVariable(51, strlen(str)/53 * 8 + 8);
		}

		showMessageFormat("%s\n", str);
	} break;

	case 71: { /* start subroutine */
		Subroutine *sub = getSubroutineByID(getVarOrWord());
		if (sub != NULL)
			startSubroutine(sub);
	} break;

	case 76: { /* add event */
		uint timeout = getVarOrWord();
		addTimeEvent(timeout, getVarOrWord());
	} break;

	case 77: { /* has item minus 1 */
		condition = _subject_item != NULL;
	} break;
			
	case 78: { /* has item minus 3 */
		condition = _object_item != NULL;
	} break;

	case 79: { /* childstruct fr2 is */
		Child2 *child = findChildOfType2(getNextItemPtr());
		uint string_id = getNextStringID();
		condition = (child != NULL) && child->string_id == string_id;
	} break;

	case 80: { /* item equal */
		condition = getNextItemPtr() == getNextItemPtr();
	} break;

	case 82: { /* dummy opcode? */
		getVarOrByte();
	} break;

	case 83: { /* restart subroutine */
		return -10;
	}

	case 87: { /* dummy opcode? */
		getNextStringID();
	} break;

	case 88: { /* or_lock_word */
		_lock_word |= 0x10;
	} break;

	case 89: { /* and lock word */
		_lock_word &= ~0x10;
	} break;

	case 90: { /* set minusitem to parent */
		Item *item = derefItem(getNextItemPtr()->parent);
		switch(getVarOrByte()) {
		case 0:
			_object_item = item;
			break;
		case 1:
			_subject_item = item;
			break;
		default:
			error("set minusitem to parent, invalid subcode");
		}
	} break;

	case 91: { /* set minusitem to sibling */
		Item *item = derefItem(getNextItemPtr()->sibling);
		switch(getVarOrByte()) {
		case 0:
			_object_item = item;
			break;
		case 1:
			_subject_item = item;
			break;
		default:
			error("set minusitem to sibling, invalid subcode");
		}
	} break;
		
	case 92: { /* set minusitem to child */
		Item *item = derefItem(getNextItemPtr()->child);
		switch(getVarOrByte()) {
		case 0:
			_object_item = item;
			break;
		case 1:
			_subject_item = item;
			break;
		default:
			error("set minusitem to child, invalid subcode");
		}
	} break;

	case 96: {
		uint val = getVarOrWord();
		o_set_video_mode(getVarOrByte(), val);
	} break;

	case 97: { /* load vga */
		ensureVgaResLoadedC(getVarOrWord());
	} break;

	case 98: {
		if (!(_game & GAME_SIMON2)) {
			uint a = getVarOrWord();
			uint b = getVarOrByte();
			uint c = getVarOrWord();
			uint d = getVarOrWord();
			uint f = getVarOrWord();
			start_vga_code(b, a/100, a, c, d, f);
		} else {
			uint a = getVarOrWord();
			uint b = getVarOrWord();
			uint c = getVarOrByte();
			uint d = getVarOrWord();
			uint e = getVarOrWord();
			uint f = getVarOrWord();
			start_vga_code(c,a,b,d,e,f);
		}
	} break;

	case 99: {
		if (!(_game & GAME_SIMON2)) {
			o_unk_99_simon1(getVarOrWord());
		} else {
			uint a = getVarOrWord();
			uint b = getVarOrWord();
			o_unk_99_simon2(a,b);
		}
	} break;

	case 100: {
		o_vga_reset();
	} break;

	case 101: {
		uint a = getVarOrByte();
		uint b = getVarOrWord();
		uint c = getVarOrWord();
		uint d = getVarOrWord();
		uint e = getVarOrWord();
		uint f = getVarOrWord();
		uint g = getVarOrWord();
		o_unk26_helper(a, b, c, d, e, f, g, 0);
	} break;

	case 102: {
		fcs_unk_2(getVarOrByte() & 7);
	} break;

	case 103: {
		o_unk_103();
	} break;

	case 104: {
		fcs_delete(getVarOrByte() & 7);
	} break;
	
	case 107: { /* ADD_ITEM_HITAREA(id,x,y,w,h,item,unk3) */
		uint flags = 0;
		uint id = getVarOrWord();
		uint params = id / 1000;
		uint x,y,w,h,unk3;
		Item *item;
		
		id = id % 1000;

		if (params & 1) flags |= 8;
		if (params & 2) flags |= 4;
		if (params & 4) flags |= 0x80;
		if (params & 8) flags |= 1;
		if (params & 16) flags |= 0x10;

		x = getVarOrWord();
		y = getVarOrWord();
		w = getVarOrWord();
		h = getVarOrWord();
		item = getNextItemPtrStrange();
		unk3 = getVarOrWord();
		if (x >= 1000) {
			unk3 += 0x4000;
			x -= 1000;
		}
		addNewHitArea(id, x, y, w, h, flags, unk3, item);
	} break;

	case 108: { /* delete hitarea */
		delete_hitarea(getVarOrWord());
	} break;

	case 109: { /* clear hitarea bit 0x40 */
		clear_hitarea_bit_0x40(getVarOrWord());
	} break;

	case 110: { /* set hitarea bit 0x40 */
		set_hitarea_bit_0x40(getVarOrWord());
	} break;

	case 111: { /* set hitarea xy */
		uint hitarea_id = getVarOrWord();
		uint x = getVarOrWord();
		uint y = getVarOrWord();
		set_hitarea_x_y(hitarea_id, x, y);
	} break;

	case 114: {
		Item *item = getNextItemPtr();
		uint fcs_index = getVarOrByte();
		lock();
		fcs_unk_proc_1(fcs_index, item, 0, 0);
		unlock();
	} break;

	case 115: { /* item has flag */
		Item *item = getNextItemPtr();
		condition = (item->unk4 & (1 << getVarOrByte())) != 0;
	} break;

	case 116: { /* item set flag */
		Item *item = getNextItemPtr();
		item->unk4 |= (1 << getVarOrByte());
	} break;
	
	case 117: { /* item clear flag */
		Item *item = getNextItemPtr();
		item->unk4 &= ~(1 << getVarOrByte());
	} break;

	case 119: { /* WAIT_VGA */
		uint var = getVarOrWord();
		_scriptvar_2 = (var==200);
		
		if (var!=200 || !_skip_vga_wait)
			o_wait_for_vga(var);
		_skip_vga_wait = false;
	} break;

	case 120: {
		o_unk_120(getVarOrWord());
	} break;

	case 121: { /* SET_VGA_ITEM */
		uint slot = getVarOrByte();
		_vc_item_array[slot] = getNextItemPtr();
	} break;
	
	case 125: { /* item is sibling with item 1 */
		Item *item = getNextItemPtr();
		condition = (getItem1Ptr()->parent == item->parent);
	} break;

	case 126: {
		Item *item = getNextItemPtr();
		uint fcs_index = getVarOrByte();
		uint a = 1<<getVarOrByte();
		lock();
		fcs_unk_proc_1(fcs_index, item, 1, a);
		unlock();
	} break;

	case 127: { /* deals with music */
		o_unk_127();
	} break;

	case 128: { /* dummy instruction? */
		getVarOrWord();
	} break;

	case 129: { /* dummy instruction? */
		getVarOrWord();
		condition = true;
	} break;

	case 130: { /* set script cond */
		uint a = getVarOrByte();
		if (a == 1) {
			getNextWord();
			_script_cond_b = getNextWord();
		} else {
			getNextWord();
			_script_cond_c = getNextWord();
		}
	} break;

	case 132: {
		o_save_game();
	} break;

	case 133: {
		o_load_game();
	} break;

	case 134: {
		warning("stopMidiMusic: not implemented");
		/* dummy proc */
	} break;

	case 135: {
		error("Quit if user presses Y unimplemented");
	} break;

	case 136: { /* set var to item unk3 */
		Item *item = getNextItemPtr();
		writeNextVarContents(item->unk3);
	} break;

	case 137: {
		o_unk_137(getVarOrByte());
	} break;

	case 138: {
		o_unk_138();
	} break;

	case 139: { /* SET_PARENT_SPECIAL */
		Item *item = getNextItemPtr();
		_no_parent_notify = true;
		setItemParent(item, getNextItemPtr());
		_no_parent_notify = false;
	} break;

	case 140: {
		killAllTimers();
		addTimeEvent(3, 0xA0);
	} break;
	
	case 141: {
		uint which = getVarOrByte();
		Item *item = getNextItemPtr();
		if(which == 1) {
			_subject_item = item;
		} else {
			_object_item = item;
		}
	} break;

	case 142: {
		condition = is_hitarea_0x40_clear(getVarOrWord());
	} break;

	case 143: { /* start item sub */
		Child1 *child = findChildOfType1(getNextItemPtr());
		if (child != NULL) {
			Subroutine *sub = getSubroutineByID(child->subroutine_id);
			if (sub)
				startSubroutine(sub);
		}
	} break;

	case 151: { /* set array6 to item */
		uint var = getVarOrByte();
		Item *item = getNextItemPtr();
		_item_array_6[var] = item;
	} break;

	case 152: { /* set m1 or m3 to array6 */
		Item *item = _item_array_6[getVarOrByte()];
		uint var = getVarOrByte();
		if (var==1) {
			_subject_item = item;
		} else {
			_object_item = item;
		}
	} break;

	case 153: { /* set bit */
		uint bit = getVarOrByte();
		_bit_array[bit>>4] |= 1<<(bit&15);
		break;
	}

	case 154: { /* clear bit */
		uint bit = getVarOrByte();
		_bit_array[bit>>4] &= ~(1<<(bit&15));
		break;
	}

	case 155: { /* is bit clear? */
		uint bit = getVarOrByte();
		condition = (_bit_array[bit>>4] & (1<<(bit&15))) == 0;
	} break;

	case 156: { /* is bit set? */
		uint bit = getVarOrByte();
		condition = (_bit_array[bit>>4] & (1<<(bit&15))) != 0;
	} break;

	case 157: { /* get item int prop */
		Item *item = getNextItemPtr();
		Child2 *child = findChildOfType2(item);
		uint prop = getVarOrByte();

		if (child != NULL && child->avail_props&(1<<prop) && prop < 16) {
			uint offs = getOffsetOfChild2Param(child, 1<<prop);
			writeNextVarContents(child->array[offs]);
		} else {
			writeNextVarContents(0);	
		}
	} break;

	case 158: { /* set item prop */
		Item *item = getNextItemPtr();
		Child2 *child = findChildOfType2(item);
		uint prop = getVarOrByte();
		int value = getVarOrWord();

		if (child != NULL && child->avail_props&(1<<prop) && prop < 16) {
			uint offs = getOffsetOfChild2Param(child, 1<<prop);
			child->array[offs] = value;
		}
	} break;

	case 160: {
		o_unk_160(getVarOrByte());
	} break;

	case 161: { /* setup text */
		uint value = getVarOrByte();
		ThreeValues *tv;

		switch(value) {
		case 1: tv = &_threevalues_1; break;
		case 2: tv = &_threevalues_2; break;
		case 101: tv = &_threevalues_3; break;
		case 102: tv = &_threevalues_4; break;
		default:
			error("setup text, invalid value %d", value);
		}

		tv->a = getVarOrWord();
		tv->b = getVarOrByte();
		tv->c = getVarOrWord();
	} break;

	case 162: {
		o_print_str();
	} break;

	case 163: {
		o_unk_163(getVarOrWord());
	} break;

	case 164: {
		_show_preposition = true;
		o_setup_cond_c();
		_show_preposition = false;
	} break;

	case 165: {
		Item *item = getNextItemPtr();
		int16 a = getNextWord(),
					b = getNextWord();
		condition = (item->unk2 == a && item->unk1 == b);
	} break;

	case 166: { /* set bit2 */
		uint bit = getVarOrByte();
		_bit_array[(bit>>4)+16] |= 1<<(bit&15);
	} break;
		
	case 167: { /* clear bit2 */
		uint bit = getVarOrByte();
		_bit_array[(bit>>4)+16] &= ~(1<<(bit&15));
	} break;

	case 168: { /* is bit clear? */
		uint bit = getVarOrByte();
		condition = (_bit_array[(bit>>4)+16] & (1<<(bit&15))) == 0;
	} break;

	case 169: { /* is bit set? */
		uint bit = getVarOrByte();
		condition = (_bit_array[(bit>>4)+16] & (1<<(bit&15))) != 0;
	} break;

	case 175: {
		o_unk_175();
	} break;

	case 176: {
		o_unk_176();
	} break;

	case 177: {
		o_177();
	} break;

	case 178: { /* path find */
		uint a = getVarOrWord();
		uint b = getVarOrWord();
		uint c = getVarOrByte();
		uint d = getVarOrByte();
		o_pathfind(a,b,c,d);
	} break;

	case 179: {
		if (_game == GAME_SIMON1WIN) {
			uint b = getVarOrByte();
			/*uint c = */getVarOrByte();
			uint a = getVarOrByte();
			uint d = _array_4[a];
			if (d!=0)
				talk_with_speech(d, b);
		} else if (_game == GAME_SIMON1DOS) {
			uint b = getVarOrByte();
			uint c = getVarOrByte();
			uint a = getVarOrByte();
			const char *s = (const char*)getStringPtrByID(_stringid_array_3[a]);
			ThreeValues *tv;
			
			switch(b) {
			case 1: tv = &_threevalues_1; break;
			case 2: tv = &_threevalues_2; break;
			case 101: tv = &_threevalues_3; break;
			case 102: tv = &_threevalues_4; break;
			default:
				error("setup text, invalid value %d", b);
			}

			talk_with_text(b, c, s, tv->a, tv->b, tv->c);
		} else if (_game == GAME_SIMON2WIN || _game == GAME_SIMON2DOS) {
			uint b = getVarOrByte();
			uint c = getVarOrByte();
			uint a = getVarOrByte();
			uint d;
			const char *s = (const char*)getStringPtrByID(_stringid_array_3[a]);
			ThreeValues *tv;
			
			switch(b) {
			case 1: tv = &_threevalues_1; break;
			case 2: tv = &_threevalues_2; break;
			case 101: tv = &_threevalues_3; break;
			case 102: tv = &_threevalues_4; break;
			default:
				error("setup text, invalid value %d", b);
			}

			d = _array_4[a];
			if (d!=0 && !_vk_t_toggle)
				talk_with_speech(d, b);

			if (s!=NULL && _vk_t_toggle)
				talk_with_text(b, c, s, tv->a, tv->b, tv->c);
		}
	} break;

	case 180: {
		o_force_unlock();
	} break;

	case 181: {
		o_force_lock();
		if (_game == GAME_SIMON2WIN || _game == GAME_SIMON2DOS) {
			fcs_unk_2(1);
			showMessageFormat("\xC");		
		}
	} break;
	
	case 182: {
		if (_game & GAME_SIMON2) goto invalid_opcode;
		o_read_vgares_328();
	} break;

	case 183: {
		if (_game & GAME_SIMON2) goto invalid_opcode;
		o_read_vgares_23();
	} break;

	case 184: {
		o_clear_vgapointer_entry(getVarOrWord());
	} break;

	case 185: {
		if (_game & GAME_SIMON2) goto invalid_opcode;
		getVarOrWord();
	} break;

	case 186: {
		o_unk_186();
	} break;

	case 187: {
		if (_game & GAME_SIMON2) goto invalid_opcode;
		o_fade_to_black();
	} break;

	case 188: 
		if (!(_game & GAME_SIMON2)) goto invalid_opcode;
		{
			uint i = getVarOrByte();
			uint str = getNextStringID();
			condition = (str<20 && _stringid_array_2[i] == str);
		} break;

	case 189: {
		if (!(_game & GAME_SIMON2)) goto invalid_opcode;
		_op_189_flags = 0;
	} break;

	case 190: {
		uint i;
		if (!(_game & GAME_SIMON2)) goto invalid_opcode;
		i = getVarOrByte();
		if (!(_op_189_flags&(1<<i)))
			o_190_helper(i);
	} break;

	default:
invalid_opcode:;
		error("Invalid opcode '%d'", opcode);
	}

	} while (condition != flag);

	return 0;
}

int SimonState::startSubroutine(Subroutine *sub) {
	int result = -1;
	SubroutineLine *sl;
	byte *old_code_ptr;

#ifdef DUMP_START_MAINSCRIPT
	dumpSubroutine(sub);
#endif

	old_code_ptr = _code_ptr;

	if (++_recursion_depth > 40)
		error("Recursion error");

	sl = (SubroutineLine*)((byte*)sub + sub->first);

	while ((byte*)sl != (byte*)sub) {
		if (checkIfToRunSubroutineLine(sl, sub)) {
			result = 0;
			_code_ptr = (byte*)sl;
			if (sub->id) _code_ptr += 2; else _code_ptr += 8;

#ifdef DUMP_CONTINOUS_MAINSCRIPT
			fprintf(_dump_file,"; %d\n", sub->id);
#endif
			result = runScript();
			if (result != 0) {
				/* result -10 means restart subroutine */
				if (result == -10) {
					delay(0); /* maybe leave control to the VGA */
					sl = (SubroutineLine*)((byte*)sub + sub->first);
					continue;
				}
				break;
			}
		}
		sl = (SubroutineLine*)((byte*)sub + sl->next);
	}

	_code_ptr = old_code_ptr;

	_recursion_depth--;
	return result;
}

int SimonState::startSubroutineEx(Subroutine *sub) {
	_item_1_ptr = _item_1;
	return startSubroutine(sub);
}

bool SimonState::checkIfToRunSubroutineLine(SubroutineLine *sl, Subroutine *sub) {
	if (sub->id)
		return true;

	if (sl->cond_a != -1 && sl->cond_a != _script_cond_a &&
		  (sl->cond_a != -2 || _script_cond_a != -1))
		return false;
	
	if (sl->cond_b != -1 && sl->cond_b != _script_cond_b &&
		  (sl->cond_b != -2 || _script_cond_b != -1))
		return false;

	if (sl->cond_c != -1 && sl->cond_c != _script_cond_c &&
		  (sl->cond_c != -2 || _script_cond_c != -1))
		return false;

	return true;
}

void SimonState::o_190_helper(uint i) {
	warning("o_190_helper not implemented");
}


bool SimonState::o_unk_23(uint a) {
	if (a == 0)
		return 0;

	if (a == 100)
		return 1;

	a += _script_unk_1;
	if (a<=0) {
		_script_unk_1 = 0;
		return 0;
	}
	
	if (((uint)(rand()>>5))%100 < a) {
		if (_script_unk_1 <= 0)
			_script_unk_1 -= 5;
		else
			_script_unk_1 = 0;
		return 1;
	}

	if (_script_unk_1 >= 0)
		_script_unk_1 += 5;
	else
		_script_unk_1 = 0;

	return 0;
}

void SimonState::o_177() {
	if (_game == GAME_SIMON1WIN) {
		uint a = getVarOrByte();
		/*uint b = */getVarOrByte();
		uint offs;
		Child2 *child = findChildOfType2(getNextItemPtr());
		if (child != NULL && child->avail_props&0x200) {
			offs = getOffsetOfChild2Param(child, 0x200);
			talk_with_speech(child->array[offs], a);
		} else if (child != NULL && child->avail_props&0x100) {
			offs = getOffsetOfChild2Param(child, 0x100);
			talk_with_speech(child->array[offs]+3550, a);
		}
	} else if (_game == GAME_SIMON1DOS) {
		uint a = getVarOrByte();
		uint b = getVarOrByte();
		Child2 *child = findChildOfType2(getNextItemPtr());
		if (child!=NULL && child->avail_props&1) {
			const char *s = (const char*)getStringPtrByID(child->array[0]);
			ThreeValues *tv;
			char buf[256];
			switch(a) {
			case 1: tv = &_threevalues_1; break;
			case 2: tv = &_threevalues_2; break;
			case 101: tv = &_threevalues_3; break;
			case 102: tv = &_threevalues_4; break;
			default:
				error("setup text, invalid value %d", a);
			}

			if (child->avail_props&0x100) {
				uint x = getOffsetOfChild2Param(child,0x100);
				sprintf(buf,"%d%s",child->array[x],s);
				s = buf;
			}

			talk_with_text(a,b,s,tv->a, tv->b,tv->c);
		}
	} else if (_game == GAME_SIMON2WIN || _game == GAME_SIMON2DOS) {
		uint a = getVarOrByte();
		uint b = getVarOrByte();
		Child2 *child = findChildOfType2(getNextItemPtr());
		const char *s = NULL;
		ThreeValues *tv = NULL;
		char buf[256];

		if (child != NULL && child->avail_props&1) {
			s = (const char*)getStringPtrByID(child->array[0]);
			switch(a) {
			case 1: tv = &_threevalues_1; break;
			case 2: tv = &_threevalues_2; break;
			case 101: tv = &_threevalues_3; break;
			case 102: tv = &_threevalues_4; break;
			default:
				error("setup text, invalid value %d", a);
			}
		}

		if (child != NULL && child->avail_props&0x200) {
			uint var200 = child->array[getOffsetOfChild2Param(child, 0x200)];

			if (child->avail_props&0x100) {
				uint var100 = child->array[getOffsetOfChild2Param(child, 0x100)];

				if (var200 == 116) var200 = var100 + 115;
				if (var200 == 92) var200 = var100 + 98;
				if (var200 == 99) var200 = 9;
				if (var200 == 97) {
					switch(var100) {
					case 12: var200 = 109; break;
					case 14: var200 = 108; break;
					case 18: var200 = 107; break;
					case 20: var200 = 106; break;
					case 22: var200 = 105; break;
					case 28: var200 = 104; break;
					case 90: var200 = 103; break;
					case 92: var200 = 102; break;
					case 100: var200 = 51; break;
					default:
						error("o_177: invalid case %d", var100);
					}
				}
			}

			if (!_vk_t_toggle)
				talk_with_speech(var200, a);
		} 

		if (!_vk_t_toggle)
			return;

		if (child==NULL || !(child->avail_props&1))
			return;
			
		if (child->avail_props&0x100) {
			sprintf(buf, "%d%s", child->array[getOffsetOfChild2Param(child, 0x100)], s);
			s = buf;
		}
		
		talk_with_text(a,b,s,tv->a, tv->b,tv->c); 
	}
}


void SimonState::o_unk_137(uint fcs_index) {
	FillOrCopyStruct *fcs;

	fcs = _fcs_ptr_array_3[fcs_index & 7];
	if (fcs->fcs_data == NULL)
		return;
	fcs_unk_proc_1(fcs_index, fcs->fcs_data->item_ptr, fcs->fcs_data->unk1, fcs->fcs_data->unk2);
}

void SimonState::o_unk_138() {
	_vga_buf_start = _vga_buf_free_start;
	_vga_file_buf_org = _vga_buf_free_start;
}

void SimonState::o_unk_186() {
	_vga_buf_free_start = _vga_file_buf_org_2;
	_vga_buf_start = _vga_file_buf_org_2;
	_vga_file_buf_org = _vga_file_buf_org_2;
}

void SimonState::o_unk_175() {
	_vga_buf_start = _vga_buf_free_start;
}

void SimonState::o_unk_176() {
	_vga_buf_free_start = _vga_file_buf_org;
	_vga_buf_start = _vga_file_buf_org;
}

int SimonState::o_unk_132_helper(bool *b, char *buf) {
	HitArea *ha;
	
	*b = true;

	
	if (!_saveload_flag) {
strange_jump:;
		_saveload_flag = false;
		savegame_dialog(buf);
	}	

start_over:;
	_key_pressed = 0;

start_over_2:;
	_last_hitarea = _last_hitarea_3 = 0;

	do {
		if (_key_pressed != 0) {
			if (_saveload_flag) {
				*b = false;	
				return _key_pressed;
			}
			goto start_over;
		}
		delay(100);
	} while (_last_hitarea_3 == 0);

	ha = _last_hitarea;

	if (ha == NULL || ha->id < 205) goto start_over_2;

	if (ha->id == 205) return ha->id;

	if (ha->id == 206) {
		if (_saveload_row_curpos == 1) goto start_over_2;
		if (_saveload_row_curpos < 7) _saveload_row_curpos = 1;
		else _saveload_row_curpos -= 6;

		goto strange_jump;
	}
	
	if (ha->id == 207) {
		if (!_savedialog_flag) goto start_over_2;
		_saveload_row_curpos += 6;
//		if (_saveload_row_curpos >= _num_savegame_rows)
//			_saveload_row_curpos = _num_savegame_rows;
		goto strange_jump;
	}
	
	if (ha->id >= 214) goto start_over_2;
	return ha->id - 208;
}

void SimonState::o_unk_132_helper_3() {
	for(int i=208; i!=208+6; i++)
		set_hitarea_bit_0x40(i);
}

void SimonState::o_unk_132_helper_2(FillOrCopyStruct *fcs, int x) {
	byte old_text;

	video_putchar(fcs, x);
	old_text = fcs->text_color;
	fcs->text_color = fcs->fill_color;
	
	x += 120;
	if (x != 128) x=129;
	video_putchar(fcs, x);

	fcs->text_color = old_text;
	video_putchar(fcs, 8);
}

void SimonState::o_unk_127() {
	if (_game & GAME_SIMON2) {
		uint a = getVarOrWord();
		uint b = getVarOrWord();
		uint c = getVarOrByte();

		warning("o_unk_127(%d,%d,%d) not implemented properly", a, b, c);	

		if (a!=_last_music_played) {
			_last_music_played = a;
			playMusic(a);
		}
	} else {
		uint a = getVarOrWord();
		/*uint b = */getVarOrWord();

		if (a!=_last_music_played) {
			_last_music_played = a;
			playMusic(a);
		}
	}
}

void SimonState::o_unk_120(uint a) {
	uint16 id = TO_BE_16(a);
	_lock_word |= 0x4000;
	_vc_ptr = (byte*)&id;
	vc_15_start_funkystruct_by_id();
	_lock_word &= ~0x4000;
}

void SimonState::o_unk_163(uint a) {
	playSound(a);
}

void SimonState::o_unk_160(uint a) {
	fcs_proc_1(_fcs_ptr_array_3[_fcs_unk_1], a);
}

void SimonState::o_unk_103() {
	lock();
	fcs_unk1(_fcs_unk_1);
	showMessageFormat("\x0C");
	unlock();
}

void SimonState::o_unk_99_simon1(uint a) {
	uint16 b = TO_BE_16(a);
	_lock_word |= 0x4000;
	_vc_ptr = (byte*)&b;
	vc_60();
	_lock_word &= ~0x4000;
}

void SimonState::o_unk_99_simon2(uint a, uint b) {
	uint16 items[2];
	
	items[0] = TO_BE_16(a);
	items[1] = TO_BE_16(a);

	_lock_word |= 0x4000;
	_vc_ptr = (byte*)&items;
	vc_60();
	_lock_word &= ~0x4000;
}

/* OK */
void SimonState::o_unk26_helper(uint a, uint b, uint c, uint d, uint e, uint f, uint g, uint h) {
	a &= 7;

	if (_fcs_ptr_array_3[a])
		fcs_delete(a);

	_fcs_ptr_array_3[a] = fcs_alloc(b,c,d,e,f,g,h);
	
	if (a == _fcs_unk_1) {
		_fcs_ptr_1 = _fcs_ptr_array_3[a];
		showmessage_helper_3(_fcs_ptr_1->unk6, _fcs_ptr_1->unk7);
	}
}