From 7af0c51f594ddf667bed050615b76dd17fe79688 Mon Sep 17 00:00:00 2001
From: Alyssa Milburn
Date: Mon, 18 Jul 2011 21:56:43 +0200
Subject: COMPOSER: Move scripting code into scripting.cpp.

---
 engines/composer/composer.cpp  | 696 ---------------------------------------
 engines/composer/module.mk     |   3 +-
 engines/composer/scripting.cpp | 729 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 731 insertions(+), 697 deletions(-)
 create mode 100644 engines/composer/scripting.cpp

(limited to 'engines/composer')

diff --git a/engines/composer/composer.cpp b/engines/composer/composer.cpp
index 484f3cecae..485932eaa4 100644
--- a/engines/composer/composer.cpp
+++ b/engines/composer/composer.cpp
@@ -31,7 +31,6 @@
 #include "common/fs.h"
 #include "common/keyboard.h"
 #include "common/substream.h"
-#include "common/savefile.h"
 
 #include "graphics/cursorman.h"
 #include "graphics/surface.h"
@@ -48,81 +47,6 @@
 
 namespace Composer {
 
-// new script ops
-enum {
-	kOpPlusPlus = 0x1,
-	kOpMinusMinus = 0x2,
-	kOpAssign = 0x3,
-	kOpAdd = 0x4,
-	kOpSubtract = 0x5,
-	kOpMultiply = 0x6,
-	kOpDivide = 0x7,
-	kOpModulo = 0x8,
-	kOpMaybeAlsoAssign = 0x9,
-	kOpBooleanAssign = 0xA,
-	kOpNegate = 0xB,
-	kOpAnd = 0xC,
-	kOpOr = 0xD,
-	kOpXor = 0xE,
-	kOpNot = 0xF,
-	kOpSqrt = 0x10,
-	kOpRandom = 0x11,
-	kOpExecuteScript = 0x12,
-	kOpCallFunc = 0x13,
-	kOpBoolLessThanEq = 0x17,
-	kOpBoolLessThan = 0x16,
-	kOpBoolGreaterThanEq = 0x15,
-	kOpBoolGreaterThan = 0x14,
-	kOpBoolEqual = 0x18,
-	kOpBoolNotEqual = 0x19,
-	kOpSaveArgs = 0x1A,
-	kOpRestoreArgs = 0x1B,
-	kOpReturn = 0x20,
-	kOpLessThanEq = 0x22,
-	kOpLessThan = 0x21,
-	kOpGreaterThanEq = 0x24,
-	kOpGreaterThan = 0x23,
-	kOpEqual = 0x25,
-	kOpNotEqual = 0x26,
-	kOpJump = 0x80,
-	kOpJumpIfNot = 0x81,
-	kOpJumpIf = 0x82,
-	kOpJumpIfNotValue = 0x83,
-	kOpJumpIfValue = 0x84
-};
-
-enum {
-	kFuncPlayAnim = 35001,
-	kFuncStopAnim = 35002,
-	// (no 35003)
-	kFuncQueueScript = 35004,
-	kFuncDequeueScript = 35005,
-	kFuncSetCursor = 35006,
-	kFuncGetCursor = 35007,
-	kFuncShowCursor = 35008,
-	kFuncHideCursor = 35009,
-	// (no 35010)
-	kFuncActivateButton = 35011,
-	kFuncDeactivateButton = 35012,
-	kFuncNewPage = 35013,
-	kFuncLoadPage = 35014,
-	kFuncUnloadPage = 35015,
-	kFuncSetPalette = 35016,
-	kFuncSaveVars = 35017,
-	kFuncLoadVars = 35018,
-	kFuncQueueScriptOnce = 35019,
-	kFuncGetMousePos = 35020,
-	kFuncChangeBackground = 35021,
-	kFuncSetBackgroundColor = 35022,
-	kFuncClearSprites = 35023,
-	kFuncAddSprite = 35024,
-	kFuncRemoveSprite = 35025,
-	kFuncQuit = 35026,
-	kFuncSaveData = 35027,
-	kFuncLoadData = 35028,
-	kFuncGetSpriteSize = 35029
-};
-
 Button::Button(Common::SeekableReadStream *stream, uint16 id) {
 	_id = id;
 
@@ -564,624 +488,4 @@ Common::SeekableReadStream *ComposerEngine::getResource(uint32 tag, uint16 id) {
 	error("No loaded library contains '%s' %04x", tag2str(tag), id);
 }
 
-void ComposerEngine::runEvent(uint16 id, int16 param1, int16 param2, int16 param3) {
-	if (!hasResource(ID_EVNT, id))
-		return;
-
-	Common::SeekableReadStream *stream = getResource(ID_EVNT, id);
-	if (stream->size() != 2)
-		error("bad EVNT size %d", stream->size());
-	uint16 scriptId = stream->readUint16LE();
-	delete stream;
-
-	if (!scriptId)
-		return;
-
-	debug(2, "running event %d via script %d(%d, %d, %d)", id, scriptId, param1, param2, param3);
-
-	runScript(scriptId, param1, param2, param3);
-}
-
-int16 ComposerEngine::runScript(uint16 id, int16 param1, int16 param2, int16 param3) {
-	_vars[1] = param1;
-	_vars[2] = param2;
-	_vars[3] = param3;
-
-	runScript(id);
-
-	return _vars[0];
-}
-
-int16 ComposerEngine::getArg(uint16 arg, uint16 type) {
-	switch (type) {
-	case 0:
-		return (int16)arg;
-	case 1:
-		return (int16)_vars[arg];
-	case 2:
-		return (int16)_vars[_vars[arg]];
-	default:
-		error("invalid argument type %d (getting arg %d)", type, arg);
-	}
-}
-
-void ComposerEngine::setArg(uint16 arg, uint16 type, uint16 val) {
-	switch (type) {
-	case 1:
-		_vars[arg] = val;
-		break;
-	case 2:
-		_vars[_vars[arg]] = val;
-		break;
-	default:
-		error("invalid argument type %d (setting arg %d)", type, arg);
-	}
-
-}
-
-void ComposerEngine::runScript(uint16 id) {
-	if (!hasResource(ID_SCRP, id)) {
-		warning("ignoring attempt to run script %d, because it doesn't exist", id);
-		return;
-	}
-
-	uint stackBase = _stack.size();
-	_stack.resize(_stack.size() + 19);
-
-	Common::SeekableReadStream *stream = getResource(ID_SCRP, id);
-	if (stream->size() < 2)
-		error("SCRP was too small (%d)", stream->size());
-	uint16 size = stream->readUint16LE();
-	if (stream->size() < 2 + 2*size)
-		error("SCRP was too small (%d, but claimed %d entries)", stream->size(), size);
-	uint16 *script = new uint16[size];
-	for (uint i = 0; i < size; i++)
-		script[i] = stream->readUint16LE();
-	delete stream;
-
-	uint16 pos = 0;
-	bool lastResult = false;
-	while (pos < size) {
-		int16 val1, val2, val3;
-
-		byte op = (byte)script[pos];
-		uint numParams = (script[pos] & 0x300) >> 8; // 2 bits
-		if (pos + numParams >= size)
-			error("script ran out of content");
-		uint arg1 = (script[pos] & 0xc00) >> 10; // 2 bits
-		uint arg2 = (script[pos] & 0x3000) >> 12; // 2 bits
-		uint arg3 = (script[pos] & 0xC000) >> 14; // 2 bits
-		switch (op) {
-		case kOpPlusPlus:
-			if (numParams != 1)
-				error("kOpPlusPlus had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "[%d/%d]++ (now %d)", script[pos + 1], arg1, val1 + 1);
-			setArg(script[pos + 1], arg1, val1 + 1);
-			break;
-		case kOpMinusMinus:
-			if (numParams != 1)
-				error("kOpMinusMinus had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "[%d/%d]-- (now %d)", script[pos + 1], arg1, val1 - 1);
-			setArg(script[pos + 1], arg1, val1 - 1);
-			break;
-		case kOpAssign:
-			if (numParams != 2)
-				error("kOpAssign had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] = [%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, val2);
-			break;
-		case kOpAdd:
-			if (numParams != 3)
-				error("kOpAdd had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d + [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 + val3);
-			setArg(script[pos + 1], arg1, val2 + val3);
-			break;
-		case kOpSubtract:
-			if (numParams != 3)
-				error("kOpSubtract had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d - [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 - val3);
-			setArg(script[pos + 1], arg1, val2 - val3);
-			break;
-		case kOpMultiply:
-			if (numParams != 3)
-				error("kOpMultiply had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d * [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 * val3);
-			setArg(script[pos + 1], arg1, val2 * val3);
-			break;
-		case kOpDivide:
-			if (numParams != 3)
-				error("kOpDivide had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			if (val3 == 0)
-				error("script tried to divide by zero");
-			debug(9, "[%d/%d] = [%d/%d]=%d / [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 / val3);
-			setArg(script[pos + 1], arg1, val2 / val3);
-			break;
-		case kOpModulo:
-			if (numParams != 3)
-				error("kOpModulo had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			if (val3 == 0)
-				error("script tried to divide by zero (modulo)");
-			debug(9, "[%d/%d] = [%d/%d]=%d %% [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 % val3);
-			setArg(script[pos + 1], arg1, val2 % val3);
-			break;
-		case kOpMaybeAlsoAssign:
-			if (numParams != 2)
-				error("kOpMaybeAlsoAssign had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] =(?) [%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, val2);
-			break;
-		case kOpBooleanAssign:
-			if (numParams != 2)
-				error("kOpBooleanAssign had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] = [%d/%d] (%d) ? 1 : 0", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, val2 ? 1 : 0);
-			break;
-		case kOpNegate:
-			if (numParams != 2)
-				error("kOpNegate had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] = -[%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, -val2);
-			break;
-		case kOpAnd:
-			if (numParams != 3)
-				error("kOpAnd had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d & [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 & val3);
-			setArg(script[pos + 1], arg1, val2 & val3);
-			break;
-		case kOpOr:
-			if (numParams != 3)
-				error("kOpOr had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d | [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 | val3);
-			setArg(script[pos + 1], arg1, val2 | val3);
-			break;
-		case kOpXor:
-			if (numParams != 3)
-				error("kOpXor had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d]=%d ^ [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 ^ val3);
-			setArg(script[pos + 1], arg1, val2 ^ val3);
-			break;
-		case kOpNot:
-			if (numParams != 2)
-				error("kOpNot had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] = ![%d/%d] (!%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, val2 ? 0 : 1);
-			break;
-		case kOpSqrt:
-			if (numParams != 2)
-				error("kOpSqrt had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] = sqrt([%d/%d] (%d))", script[pos + 1], arg1, script[pos + 2], arg2, val2);
-			setArg(script[pos + 1], arg1, (int16)sqrt((double)val2));
-			break;
-		case kOpRandom:
-			if (numParams != 3)
-				error("kOpRandom had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			val1 = _rnd->getRandomNumberRng(val2, val3);
-			debug(9, "[%d/%d] = rnd([%d/%d]=%d, [%d/%d]=%d) (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val1);
-			setArg(script[pos + 1], arg1, val1);
-			break;
-		case kOpExecuteScript:
-			if (numParams != 1)
-				error("kOpExecuteScript had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(8, "run script [%d/%d]=%d", script[pos + 1], arg1, val1);
-			runScript(val1);
-			debug(8, "done run script");
-			break;
-		case kOpCallFunc:
-			if (numParams != 1)
-				error("kOpCallFunc had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(8, "%d(%d, %d, %d)", (uint16)val1, _vars[1], _vars[2], _vars[3]);
-			_vars[0] = scriptFuncCall(val1, _vars[1], _vars[2], _vars[3]);
-			break;
-		case kOpBoolLessThanEq:
-			if (numParams != 2)
-				error("kOpBoolLessThanEq had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] <= [%d/%d]? (%d <= %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 <= val2);
-			break;
-		case kOpBoolLessThan:
-			if (numParams != 2)
-				error("kOpBoolLessThan had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] < [%d/%d]? (%d < %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 < val2);
-			break;
-		case kOpBoolGreaterThanEq:
-			if (numParams != 2)
-				error("kOpBoolGreaterThanEq had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] >= [%d/%d]? (%d >= %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 >= val2);
-			break;
-		case kOpBoolGreaterThan:
-			if (numParams != 2)
-				error("kOpBoolGreaterThan had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] > [%d/%d]? (%d > %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 > val2);
-			break;
-		case kOpBoolEqual:
-			if (numParams != 2)
-				error("kOpBoolEqual had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] == [%d/%d]? (%d == %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 == val2);
-			break;
-		case kOpBoolNotEqual:
-			if (numParams != 2)
-				error("kOpBoolNotEqual had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "[%d/%d] != [%d/%d]? (%d != %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
-			lastResult = (val1 != val2);
-			break;
-		case kOpSaveArgs:
-			if (numParams != 0)
-				error("kOpSaveArgs had wrong number of params (%d)", numParams);
-			debug(9, "save args");
-			for (uint i = 1; i < 19; i++)
-				_stack[stackBase + i] = _vars[i];
-			break;
-		case kOpRestoreArgs:
-			if (numParams != 0)
-				error("kOpRestoreArgs had wrong number of params (%d)", numParams);
-			debug(9, "restore args");
-			for (uint i = 1; i < 19; i++)
-				_vars[i] = _stack[stackBase + i];
-			break;
-		case kOpReturn:
-			if (numParams != 1)
-				error("kOpReturn had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "return [%d/%d]=%d", script[pos + 1], arg1, val1);
-			_vars[0] = val1;
-			break;
-		case kOpLessThanEq:
-			if (numParams != 3)
-				error("kOpLessThanEq had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] <= [%d/%d]? (%d <= %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
-			setArg(script[pos + 1], arg1, (val3 <= val2) ? 1 : 0);
-			break;
-		case kOpLessThan:
-			if (numParams != 3)
-				error("kOpLessThan had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] < [%d/%d]? (%d < %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
-			setArg(script[pos + 1], arg1, (val3 < val2) ? 1 : 0);
-			break;
-		case kOpGreaterThanEq:
-			if (numParams != 3)
-				error("kOpGreaterThanEq had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] >= [%d/%d]? (%d >= %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
-			setArg(script[pos + 1], arg1, (val3 >= val2) ? 1 : 0);
-			break;
-		case kOpGreaterThan:
-			if (numParams != 3)
-				error("kOpGreaterThan had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] > [%d/%d]? (%d > %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
-			setArg(script[pos + 1], arg1, (val3 > val2) ? 1 : 0);
-			break;
-		case kOpEqual:
-			if (numParams != 3)
-				error("kOpEqual had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] == [%d/%d]? (%d == %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val2, val3);
-			setArg(script[pos + 1], arg1, (val3 == val2) ? 1 : 0);
-			break;
-		case kOpNotEqual:
-			if (numParams != 3)
-				error("kOpNotEqual had wrong number of params (%d)", numParams);
-			val2 = getArg(script[pos + 2], arg2);
-			val3 = getArg(script[pos + 3], arg3);
-			debug(9, "[%d/%d] = [%d/%d] != [%d/%d]? (%d != %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val2, val3);
-			setArg(script[pos + 1], arg1, (val3 != val2) ? 1 : 0);
-			break;
-		case kOpJump:
-			if (numParams != 1)
-				error("kOpJump had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "jump by [%d/%d]=%d", script[pos + 1], arg1, val1);
-			pos += val1;
-			break;
-		case kOpJumpIfNot:
-			if (numParams != 1)
-				error("kOpJumpIfNot had wrong number of params (%d)", numParams);
-			if (lastResult)
-				break;
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "jump if not, by [%d/%d]=%d", script[pos + 1], arg1, val1);
-			pos += val1;
-			break;
-		case kOpJumpIf:
-			if (numParams != 1)
-				error("kOpJumpIf had wrong number of params (%d)", numParams);
-			if (!lastResult)
-				break;
-			val1 = getArg(script[pos + 1], arg1);
-			debug(9, "jump if, by [%d/%d]=%d", script[pos + 1], arg1, val1);
-			pos += val1;
-			break;
-		case kOpJumpIfNotValue:
-			if (numParams != 2)
-				error("kOpJumpIfNotValue had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "jump if not [%d/%d]=%d", script[pos + 1], arg1, val1);
-			if (val1)
-				break;
-			debug(9, "--> jump by [%d/%d]=%d", script[pos + 2], arg2, val2);
-			pos += val2;
-			break;
-		case kOpJumpIfValue:
-			if (numParams != 2)
-				error("kOpJumpIfValue had wrong number of params (%d)", numParams);
-			val1 = getArg(script[pos + 1], arg1);
-			val2 = getArg(script[pos + 2], arg2);
-			debug(9, "jump if [%d/%d]=%d", script[pos + 1], arg1, val1);
-			if (!val1)
-				break;
-			debug(9, "--> jump by [%d/%d]=%d", script[pos + 2], arg2, val2);
-			pos += val2;
-			break;
-		default:
-			error("unknown script op 0x%02x", op);
-		}
-		pos += (1 + numParams);
-
-		if (op == kOpReturn)
-			break;
-	}
-
-	delete[] script;
-	_stack.resize(_stack.size() - 19);
-}
-
-int16 ComposerEngine::scriptFuncCall(uint16 id, int16 param1, int16 param2, int16 param3) {
-	switch (id) {
-	case kFuncPlayAnim:
-		debug(3, "kFuncPlayAnim(%d, %d, %d)", param1, param2, param3);
-		playAnimation(param1, param2, param3, 0);
-		return 1; // TODO: return 0 on failure
-	case kFuncStopAnim:
-		debug(3, "kFuncStopAnim(%d)", param1);
-		for (Common::List<Animation *>::iterator i = _anims.begin(); i != _anims.end(); i++) {
-			if ((*i)->_id == param1)
-				stopAnimation(*i);
-		}
-		return 0;
-	case kFuncQueueScript:
-		debug(3, "kFuncQueueScript(%d, %d, %d)", param1, param2, param3);
-		_queuedScripts[param1]._baseTime = _system->getMillis();
-		_queuedScripts[param1]._duration = 10 * param2;
-		_queuedScripts[param1]._count = 0xffffffff;
-		_queuedScripts[param1]._scriptId = param3;
-		return 0;
-	case kFuncDequeueScript:
-		debug(3, "kFuncDequeueScript(%d)", param1);
-		_queuedScripts[param1]._count = 0;
-		_queuedScripts[param1]._scriptId = 0;
-		return 0;
-	case kFuncSetCursor:
-		debug(3, "kSetCursor(%d, (%d, %d))", param1, param2, param3);
-		{
-		uint16 oldCursor = _mouseSpriteId;
-		setCursor(param1, Common::Point(param2, param3));
-		return oldCursor;
-		}
-	case kFuncGetCursor:
-		debug(3, "kFuncGetCursor()");
-		return _mouseSpriteId;
-	case kFuncShowCursor:
-		debug(3, "kFuncShowCursor()");
-		setCursorVisible(true);
-		return 0;
-	case kFuncHideCursor:
-		debug(3, "kFuncHideCursor()");
-		setCursorVisible(false);
-		return 0;
-	case kFuncActivateButton:
-		debug(3, "kFuncActivateButton(%d)", param1);
-		for (Common::List<Button>::iterator i = _buttons.begin(); i != _buttons.end(); i++) {
-			if (i->_id != param1)
-				continue;
-			i->_active = true;
-		}
-		onMouseMove(_lastMousePos);
-		return 1;
-	case kFuncDeactivateButton:
-		debug(3, "kFuncDeactivateButton(%d)", param1);
-		for (Common::List<Button>::iterator i = _buttons.begin(); i != _buttons.end(); i++) {
-			if (i->_id != param1)
-				continue;
-			i->_active = false;
-		}
-		onMouseMove(_lastMousePos);
-		return 1;
-	case kFuncNewPage:
-		debug(3, "kFuncNewPage(%d, %d)", param1, param2);
-		_pendingPageChanges.push_back(PendingPageChange(param1, true));
-		_pendingPageChanges.push_back(PendingPageChange(param2, false));
-		return 1;
-	case kFuncLoadPage:
-		debug(3, "kFuncLoadPage(%d)", param1);
-		_pendingPageChanges.push_back(PendingPageChange(param1, false));
-		return 1;
-	case kFuncUnloadPage:
-		debug(3, "ignoring kFuncUnloadPage(%d)", param1);
-		_pendingPageChanges.push_back(PendingPageChange(param1, true));
-		return 1;
-	case kFuncSetPalette:
-		// TODO: return 0 if not disabling (0) and doesn't exist
-		debug(4, "kFuncSetPalette(%d, %d)", param1, param2);
-		loadCTBL(param1, param2);
-		// TODO: incomplete?
-		return 1;
-	case kFuncSaveVars:
-		debug(3, "kFuncSaveVars(%d)", param1);
-		{
-		Common::String filename = _targetName + Common::String::format(".%03d", param1);
-		Common::WriteStream *stream = _saveFileMan->openForSaving(filename);
-		for (uint i = 0; i < 1000; i++) {
-			stream->writeUint16LE(_vars[i]);
-		}
-		delete stream;
-		}
-		return 1;
-	case kFuncLoadVars:
-		debug(3, "kFuncLoadVars(%d, %d, %d)", param1, param2, param3);
-		{
-		Common::String filename = _targetName + Common::String::format(".%03d", param1);
-		Common::SeekableReadStream *stream = _saveFileMan->openForLoading(filename);
-		if (!stream) {
-			if (!_bookIni.hasKey(Common::String::format("%d", param1), "Data"))
-				return 0;
-			filename = getFilename("Data", param1);
-			Common::File *file = new Common::File();
-			if (!file->open(filename))
-				error("couldn't open '%s' to get vars id '%d'", filename.c_str(), param1);
-			stream = file;
-		}
-		if (param3 == 0)
-			param3 = 1000;
-		else
-			param3 = param3;
-		if (param2 < 0 || param3 < 0 || param2 + param3 > 1000)
-			error("can't read %d entries into %d from file '%s' for vars id '%d'", param3, param2, filename.c_str(), param1);
-		stream->skip(param2 * 2);
-		for (uint i = 0; i < (uint)param3; i++) {
-			if (stream->pos() + 1 > stream->size())
-				break;
-			_vars[param2 + i] = stream->readUint16LE();
-		}
-		delete stream;
-		}
-		return 1;
-	case kFuncQueueScriptOnce:
-		debug(3, "kFuncQueueScriptOnce(%d, %d, %d)", param1, param2, param3);
-		_queuedScripts[param1]._baseTime = _system->getMillis();
-		_queuedScripts[param1]._duration = 10 * param2;
-		_queuedScripts[param1]._count = 1;
-		_queuedScripts[param1]._scriptId = param3;
-		return 0;
-	case kFuncGetMousePos:
-		// TODO
-		warning("ignoring kFuncGetMousePos(%d, %d)", param1, param2);
-		return 0;
-	case kFuncChangeBackground:
-		// TODO
-		warning("ignoring kFuncChangeBackground(%d)", param1);
-		// TODO: return 1 if background existed, else 0
-		return 0;
-	case kFuncSetBackgroundColor:
-		// TODO
-		warning("ignoring kFuncSetBackgroundColor(%d)", param1);
-		return 0;
-	case kFuncClearSprites:
-		// TODO
-		warning("ignoring kFuncClearSprites()");
-		return 0;
-	case kFuncAddSprite:
-		{
-		Common::Point pos(_vars[param3], _vars[param3 + 1]);
-		int16 zorder = _vars[param3 + 2];
-		debug(3, "kFuncAddSprite(%d, %d, [%d = (%d, %d), %d])", param1, param2, param3, pos.x, pos.y, zorder);
-		addSprite(param1, param2, zorder, pos);
-		}
-		return 0;
-	case kFuncRemoveSprite:
-		debug(3, "kFuncRemoveSprite(%d, %d)", param1, param2);
-		removeSprite(param1, param2);
-		return 0;
-	case kFuncQuit:
-		// TODO
-		warning("ignoring kFuncQuit()");
-		return 0;
-	case kFuncSaveData:
-		// TODO
-		warning("ignoring kFuncSaveData(%d, %d, %d)", param1, param2, param3);
-		return 1;
-	case kFuncLoadData:
-		debug(3, "kFuncLoadData(%d, %d, %d)", param1, param2, param3);
-		{
-		Common::String filename = getFilename("Data", param1);
-		Common::File *file = new Common::File();
-		if (!file->open(filename))
-			error("couldn't open '%s' to get data id '%d'", filename.c_str(), param1);
-		if (param3 == 0)
-			param3 = 1000;
-		else
-			param3 = param3;
-		if (param2 < 0 || param3 < 0 || param2 + param3 > 1000)
-			error("can't read %d entries into %d from file '%s' for data id '%d'", param3, param2, filename.c_str(), param1);
-		for (uint i = 0; i < (uint)param3; i++) {
-			if (file->pos() + 1 > file->size())
-				break;
-			_vars[param2 + i] = file->readUint16LE();
-		}
-		delete file;
-		}
-		return 1;
-	case kFuncGetSpriteSize:
-		debug(3, "kFuncGetSpriteSize(%d, %d, %d)", param1, param2, param3);
-		int16 width, height;
-		width = 0;
-		height = 0;
-		{
-		Common::SeekableReadStream *stream = getStreamForSprite(param1);
-		if (stream) {
-			stream->readUint16LE();
-			height = stream->readSint16LE();
-			width = stream->readSint16LE();
-			delete stream;
-		}
-		}
-		_vars[param2] = width;
-		_vars[param3] = height;
-		return 0;
-	default:
-		error("unknown scriptFuncCall %d(%d, %d, %d)", (uint32)id, param1, param2, param3);
-	}
-}
-
 } // End of namespace Composer
diff --git a/engines/composer/module.mk b/engines/composer/module.mk
index cb95396125..72817de044 100644
--- a/engines/composer/module.mk
+++ b/engines/composer/module.mk
@@ -4,7 +4,8 @@ MODULE_OBJS = \
 	composer.o \
 	detection.o \
 	graphics.o \
-	resource.o
+	resource.o \
+	scripting.o
 
 # This module can be built as a plugin
 ifdef BUILD_PLUGINS
diff --git a/engines/composer/scripting.cpp b/engines/composer/scripting.cpp
new file mode 100644
index 0000000000..5fa3d137b4
--- /dev/null
+++ b/engines/composer/scripting.cpp
@@ -0,0 +1,729 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+#include "common/scummsys.h"
+#include "common/savefile.h"
+
+#include "composer/composer.h"
+#include "composer/graphics.h"
+#include "composer/resource.h"
+
+namespace Composer {
+
+// new script ops
+enum {
+	kOpPlusPlus = 0x1,
+	kOpMinusMinus = 0x2,
+	kOpAssign = 0x3,
+	kOpAdd = 0x4,
+	kOpSubtract = 0x5,
+	kOpMultiply = 0x6,
+	kOpDivide = 0x7,
+	kOpModulo = 0x8,
+	kOpMaybeAlsoAssign = 0x9,
+	kOpBooleanAssign = 0xA,
+	kOpNegate = 0xB,
+	kOpAnd = 0xC,
+	kOpOr = 0xD,
+	kOpXor = 0xE,
+	kOpNot = 0xF,
+	kOpSqrt = 0x10,
+	kOpRandom = 0x11,
+	kOpExecuteScript = 0x12,
+	kOpCallFunc = 0x13,
+	kOpBoolLessThanEq = 0x17,
+	kOpBoolLessThan = 0x16,
+	kOpBoolGreaterThanEq = 0x15,
+	kOpBoolGreaterThan = 0x14,
+	kOpBoolEqual = 0x18,
+	kOpBoolNotEqual = 0x19,
+	kOpSaveArgs = 0x1A,
+	kOpRestoreArgs = 0x1B,
+	kOpReturn = 0x20,
+	kOpLessThanEq = 0x22,
+	kOpLessThan = 0x21,
+	kOpGreaterThanEq = 0x24,
+	kOpGreaterThan = 0x23,
+	kOpEqual = 0x25,
+	kOpNotEqual = 0x26,
+	kOpJump = 0x80,
+	kOpJumpIfNot = 0x81,
+	kOpJumpIf = 0x82,
+	kOpJumpIfNotValue = 0x83,
+	kOpJumpIfValue = 0x84
+};
+
+enum {
+	kFuncPlayAnim = 35001,
+	kFuncStopAnim = 35002,
+	// (no 35003)
+	kFuncQueueScript = 35004,
+	kFuncDequeueScript = 35005,
+	kFuncSetCursor = 35006,
+	kFuncGetCursor = 35007,
+	kFuncShowCursor = 35008,
+	kFuncHideCursor = 35009,
+	// (no 35010)
+	kFuncActivateButton = 35011,
+	kFuncDeactivateButton = 35012,
+	kFuncNewPage = 35013,
+	kFuncLoadPage = 35014,
+	kFuncUnloadPage = 35015,
+	kFuncSetPalette = 35016,
+	kFuncSaveVars = 35017,
+	kFuncLoadVars = 35018,
+	kFuncQueueScriptOnce = 35019,
+	kFuncGetMousePos = 35020,
+	kFuncChangeBackground = 35021,
+	kFuncSetBackgroundColor = 35022,
+	kFuncClearSprites = 35023,
+	kFuncAddSprite = 35024,
+	kFuncRemoveSprite = 35025,
+	kFuncQuit = 35026,
+	kFuncSaveData = 35027,
+	kFuncLoadData = 35028,
+	kFuncGetSpriteSize = 35029
+};
+
+void ComposerEngine::runEvent(uint16 id, int16 param1, int16 param2, int16 param3) {
+	if (!hasResource(ID_EVNT, id))
+		return;
+
+	Common::SeekableReadStream *stream = getResource(ID_EVNT, id);
+	if (stream->size() != 2)
+		error("bad EVNT size %d", stream->size());
+	uint16 scriptId = stream->readUint16LE();
+	delete stream;
+
+	if (!scriptId)
+		return;
+
+	debug(2, "running event %d via script %d(%d, %d, %d)", id, scriptId, param1, param2, param3);
+
+	runScript(scriptId, param1, param2, param3);
+}
+
+int16 ComposerEngine::runScript(uint16 id, int16 param1, int16 param2, int16 param3) {
+	_vars[1] = param1;
+	_vars[2] = param2;
+	_vars[3] = param3;
+
+	runScript(id);
+
+	return _vars[0];
+}
+
+int16 ComposerEngine::getArg(uint16 arg, uint16 type) {
+	switch (type) {
+	case 0:
+		return (int16)arg;
+	case 1:
+		return (int16)_vars[arg];
+	case 2:
+		return (int16)_vars[_vars[arg]];
+	default:
+		error("invalid argument type %d (getting arg %d)", type, arg);
+	}
+}
+
+void ComposerEngine::setArg(uint16 arg, uint16 type, uint16 val) {
+	switch (type) {
+	case 1:
+		_vars[arg] = val;
+		break;
+	case 2:
+		_vars[_vars[arg]] = val;
+		break;
+	default:
+		error("invalid argument type %d (setting arg %d)", type, arg);
+	}
+
+}
+
+void ComposerEngine::runScript(uint16 id) {
+	if (!hasResource(ID_SCRP, id)) {
+		warning("ignoring attempt to run script %d, because it doesn't exist", id);
+		return;
+	}
+
+	uint stackBase = _stack.size();
+	_stack.resize(_stack.size() + 19);
+
+	Common::SeekableReadStream *stream = getResource(ID_SCRP, id);
+	if (stream->size() < 2)
+		error("SCRP was too small (%d)", stream->size());
+	uint16 size = stream->readUint16LE();
+	if (stream->size() < 2 + 2*size)
+		error("SCRP was too small (%d, but claimed %d entries)", stream->size(), size);
+	uint16 *script = new uint16[size];
+	for (uint i = 0; i < size; i++)
+		script[i] = stream->readUint16LE();
+	delete stream;
+
+	uint16 pos = 0;
+	bool lastResult = false;
+	while (pos < size) {
+		int16 val1, val2, val3;
+
+		byte op = (byte)script[pos];
+		uint numParams = (script[pos] & 0x300) >> 8; // 2 bits
+		if (pos + numParams >= size)
+			error("script ran out of content");
+		uint arg1 = (script[pos] & 0xc00) >> 10; // 2 bits
+		uint arg2 = (script[pos] & 0x3000) >> 12; // 2 bits
+		uint arg3 = (script[pos] & 0xC000) >> 14; // 2 bits
+		switch (op) {
+		case kOpPlusPlus:
+			if (numParams != 1)
+				error("kOpPlusPlus had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "[%d/%d]++ (now %d)", script[pos + 1], arg1, val1 + 1);
+			setArg(script[pos + 1], arg1, val1 + 1);
+			break;
+		case kOpMinusMinus:
+			if (numParams != 1)
+				error("kOpMinusMinus had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "[%d/%d]-- (now %d)", script[pos + 1], arg1, val1 - 1);
+			setArg(script[pos + 1], arg1, val1 - 1);
+			break;
+		case kOpAssign:
+			if (numParams != 2)
+				error("kOpAssign had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] = [%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, val2);
+			break;
+		case kOpAdd:
+			if (numParams != 3)
+				error("kOpAdd had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d + [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 + val3);
+			setArg(script[pos + 1], arg1, val2 + val3);
+			break;
+		case kOpSubtract:
+			if (numParams != 3)
+				error("kOpSubtract had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d - [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 - val3);
+			setArg(script[pos + 1], arg1, val2 - val3);
+			break;
+		case kOpMultiply:
+			if (numParams != 3)
+				error("kOpMultiply had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d * [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 * val3);
+			setArg(script[pos + 1], arg1, val2 * val3);
+			break;
+		case kOpDivide:
+			if (numParams != 3)
+				error("kOpDivide had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			if (val3 == 0)
+				error("script tried to divide by zero");
+			debug(9, "[%d/%d] = [%d/%d]=%d / [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 / val3);
+			setArg(script[pos + 1], arg1, val2 / val3);
+			break;
+		case kOpModulo:
+			if (numParams != 3)
+				error("kOpModulo had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			if (val3 == 0)
+				error("script tried to divide by zero (modulo)");
+			debug(9, "[%d/%d] = [%d/%d]=%d %% [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 % val3);
+			setArg(script[pos + 1], arg1, val2 % val3);
+			break;
+		case kOpMaybeAlsoAssign:
+			if (numParams != 2)
+				error("kOpMaybeAlsoAssign had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] =(?) [%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, val2);
+			break;
+		case kOpBooleanAssign:
+			if (numParams != 2)
+				error("kOpBooleanAssign had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] = [%d/%d] (%d) ? 1 : 0", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, val2 ? 1 : 0);
+			break;
+		case kOpNegate:
+			if (numParams != 2)
+				error("kOpNegate had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] = -[%d/%d] (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, -val2);
+			break;
+		case kOpAnd:
+			if (numParams != 3)
+				error("kOpAnd had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d & [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 & val3);
+			setArg(script[pos + 1], arg1, val2 & val3);
+			break;
+		case kOpOr:
+			if (numParams != 3)
+				error("kOpOr had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d | [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 | val3);
+			setArg(script[pos + 1], arg1, val2 | val3);
+			break;
+		case kOpXor:
+			if (numParams != 3)
+				error("kOpXor had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d]=%d ^ [%d/%d]=%d (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val2 ^ val3);
+			setArg(script[pos + 1], arg1, val2 ^ val3);
+			break;
+		case kOpNot:
+			if (numParams != 2)
+				error("kOpNot had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] = ![%d/%d] (!%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, val2 ? 0 : 1);
+			break;
+		case kOpSqrt:
+			if (numParams != 2)
+				error("kOpSqrt had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] = sqrt([%d/%d] (%d))", script[pos + 1], arg1, script[pos + 2], arg2, val2);
+			setArg(script[pos + 1], arg1, (int16)sqrt((double)val2));
+			break;
+		case kOpRandom:
+			if (numParams != 3)
+				error("kOpRandom had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			val1 = _rnd->getRandomNumberRng(val2, val3);
+			debug(9, "[%d/%d] = rnd([%d/%d]=%d, [%d/%d]=%d) (%d)", script[pos + 1], arg1, script[pos + 2], arg2, val2, script[pos+3], arg3, val3, val1);
+			setArg(script[pos + 1], arg1, val1);
+			break;
+		case kOpExecuteScript:
+			if (numParams != 1)
+				error("kOpExecuteScript had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(8, "run script [%d/%d]=%d", script[pos + 1], arg1, val1);
+			runScript(val1);
+			debug(8, "done run script");
+			break;
+		case kOpCallFunc:
+			if (numParams != 1)
+				error("kOpCallFunc had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(8, "%d(%d, %d, %d)", (uint16)val1, _vars[1], _vars[2], _vars[3]);
+			_vars[0] = scriptFuncCall(val1, _vars[1], _vars[2], _vars[3]);
+			break;
+		case kOpBoolLessThanEq:
+			if (numParams != 2)
+				error("kOpBoolLessThanEq had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] <= [%d/%d]? (%d <= %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 <= val2);
+			break;
+		case kOpBoolLessThan:
+			if (numParams != 2)
+				error("kOpBoolLessThan had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] < [%d/%d]? (%d < %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 < val2);
+			break;
+		case kOpBoolGreaterThanEq:
+			if (numParams != 2)
+				error("kOpBoolGreaterThanEq had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] >= [%d/%d]? (%d >= %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 >= val2);
+			break;
+		case kOpBoolGreaterThan:
+			if (numParams != 2)
+				error("kOpBoolGreaterThan had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] > [%d/%d]? (%d > %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 > val2);
+			break;
+		case kOpBoolEqual:
+			if (numParams != 2)
+				error("kOpBoolEqual had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] == [%d/%d]? (%d == %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 == val2);
+			break;
+		case kOpBoolNotEqual:
+			if (numParams != 2)
+				error("kOpBoolNotEqual had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "[%d/%d] != [%d/%d]? (%d != %d)", script[pos + 1], arg1, script[pos + 2], arg2, val1, val2);
+			lastResult = (val1 != val2);
+			break;
+		case kOpSaveArgs:
+			if (numParams != 0)
+				error("kOpSaveArgs had wrong number of params (%d)", numParams);
+			debug(9, "save args");
+			for (uint i = 1; i < 19; i++)
+				_stack[stackBase + i] = _vars[i];
+			break;
+		case kOpRestoreArgs:
+			if (numParams != 0)
+				error("kOpRestoreArgs had wrong number of params (%d)", numParams);
+			debug(9, "restore args");
+			for (uint i = 1; i < 19; i++)
+				_vars[i] = _stack[stackBase + i];
+			break;
+		case kOpReturn:
+			if (numParams != 1)
+				error("kOpReturn had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "return [%d/%d]=%d", script[pos + 1], arg1, val1);
+			_vars[0] = val1;
+			break;
+		case kOpLessThanEq:
+			if (numParams != 3)
+				error("kOpLessThanEq had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] <= [%d/%d]? (%d <= %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
+			setArg(script[pos + 1], arg1, (val3 <= val2) ? 1 : 0);
+			break;
+		case kOpLessThan:
+			if (numParams != 3)
+				error("kOpLessThan had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] < [%d/%d]? (%d < %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
+			setArg(script[pos + 1], arg1, (val3 < val2) ? 1 : 0);
+			break;
+		case kOpGreaterThanEq:
+			if (numParams != 3)
+				error("kOpGreaterThanEq had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] >= [%d/%d]? (%d >= %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
+			setArg(script[pos + 1], arg1, (val3 >= val2) ? 1 : 0);
+			break;
+		case kOpGreaterThan:
+			if (numParams != 3)
+				error("kOpGreaterThan had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] > [%d/%d]? (%d > %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val3, val2);
+			setArg(script[pos + 1], arg1, (val3 > val2) ? 1 : 0);
+			break;
+		case kOpEqual:
+			if (numParams != 3)
+				error("kOpEqual had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] == [%d/%d]? (%d == %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val2, val3);
+			setArg(script[pos + 1], arg1, (val3 == val2) ? 1 : 0);
+			break;
+		case kOpNotEqual:
+			if (numParams != 3)
+				error("kOpNotEqual had wrong number of params (%d)", numParams);
+			val2 = getArg(script[pos + 2], arg2);
+			val3 = getArg(script[pos + 3], arg3);
+			debug(9, "[%d/%d] = [%d/%d] != [%d/%d]? (%d != %d)", script[pos + 1], arg1, script[pos + 2], arg2, script[pos + 3], arg3, val2, val3);
+			setArg(script[pos + 1], arg1, (val3 != val2) ? 1 : 0);
+			break;
+		case kOpJump:
+			if (numParams != 1)
+				error("kOpJump had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "jump by [%d/%d]=%d", script[pos + 1], arg1, val1);
+			pos += val1;
+			break;
+		case kOpJumpIfNot:
+			if (numParams != 1)
+				error("kOpJumpIfNot had wrong number of params (%d)", numParams);
+			if (lastResult)
+				break;
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "jump if not, by [%d/%d]=%d", script[pos + 1], arg1, val1);
+			pos += val1;
+			break;
+		case kOpJumpIf:
+			if (numParams != 1)
+				error("kOpJumpIf had wrong number of params (%d)", numParams);
+			if (!lastResult)
+				break;
+			val1 = getArg(script[pos + 1], arg1);
+			debug(9, "jump if, by [%d/%d]=%d", script[pos + 1], arg1, val1);
+			pos += val1;
+			break;
+		case kOpJumpIfNotValue:
+			if (numParams != 2)
+				error("kOpJumpIfNotValue had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "jump if not [%d/%d]=%d", script[pos + 1], arg1, val1);
+			if (val1)
+				break;
+			debug(9, "--> jump by [%d/%d]=%d", script[pos + 2], arg2, val2);
+			pos += val2;
+			break;
+		case kOpJumpIfValue:
+			if (numParams != 2)
+				error("kOpJumpIfValue had wrong number of params (%d)", numParams);
+			val1 = getArg(script[pos + 1], arg1);
+			val2 = getArg(script[pos + 2], arg2);
+			debug(9, "jump if [%d/%d]=%d", script[pos + 1], arg1, val1);
+			if (!val1)
+				break;
+			debug(9, "--> jump by [%d/%d]=%d", script[pos + 2], arg2, val2);
+			pos += val2;
+			break;
+		default:
+			error("unknown script op 0x%02x", op);
+		}
+		pos += (1 + numParams);
+
+		if (op == kOpReturn)
+			break;
+	}
+
+	delete[] script;
+	_stack.resize(_stack.size() - 19);
+}
+
+int16 ComposerEngine::scriptFuncCall(uint16 id, int16 param1, int16 param2, int16 param3) {
+	switch (id) {
+	case kFuncPlayAnim:
+		debug(3, "kFuncPlayAnim(%d, %d, %d)", param1, param2, param3);
+		playAnimation(param1, param2, param3, 0);
+		return 1; // TODO: return 0 on failure
+	case kFuncStopAnim:
+		debug(3, "kFuncStopAnim(%d)", param1);
+		for (Common::List<Animation *>::iterator i = _anims.begin(); i != _anims.end(); i++) {
+			if ((*i)->_id == param1)
+				stopAnimation(*i);
+		}
+		return 0;
+	case kFuncQueueScript:
+		debug(3, "kFuncQueueScript(%d, %d, %d)", param1, param2, param3);
+		_queuedScripts[param1]._baseTime = _system->getMillis();
+		_queuedScripts[param1]._duration = 10 * param2;
+		_queuedScripts[param1]._count = 0xffffffff;
+		_queuedScripts[param1]._scriptId = param3;
+		return 0;
+	case kFuncDequeueScript:
+		debug(3, "kFuncDequeueScript(%d)", param1);
+		_queuedScripts[param1]._count = 0;
+		_queuedScripts[param1]._scriptId = 0;
+		return 0;
+	case kFuncSetCursor:
+		debug(3, "kSetCursor(%d, (%d, %d))", param1, param2, param3);
+		{
+		uint16 oldCursor = _mouseSpriteId;
+		setCursor(param1, Common::Point(param2, param3));
+		return oldCursor;
+		}
+	case kFuncGetCursor:
+		debug(3, "kFuncGetCursor()");
+		return _mouseSpriteId;
+	case kFuncShowCursor:
+		debug(3, "kFuncShowCursor()");
+		setCursorVisible(true);
+		return 0;
+	case kFuncHideCursor:
+		debug(3, "kFuncHideCursor()");
+		setCursorVisible(false);
+		return 0;
+	case kFuncActivateButton:
+		debug(3, "kFuncActivateButton(%d)", param1);
+		for (Common::List<Button>::iterator i = _buttons.begin(); i != _buttons.end(); i++) {
+			if (i->_id != param1)
+				continue;
+			i->_active = true;
+		}
+		onMouseMove(_lastMousePos);
+		return 1;
+	case kFuncDeactivateButton:
+		debug(3, "kFuncDeactivateButton(%d)", param1);
+		for (Common::List<Button>::iterator i = _buttons.begin(); i != _buttons.end(); i++) {
+			if (i->_id != param1)
+				continue;
+			i->_active = false;
+		}
+		onMouseMove(_lastMousePos);
+		return 1;
+	case kFuncNewPage:
+		debug(3, "kFuncNewPage(%d, %d)", param1, param2);
+		_pendingPageChanges.push_back(PendingPageChange(param1, true));
+		_pendingPageChanges.push_back(PendingPageChange(param2, false));
+		return 1;
+	case kFuncLoadPage:
+		debug(3, "kFuncLoadPage(%d)", param1);
+		_pendingPageChanges.push_back(PendingPageChange(param1, false));
+		return 1;
+	case kFuncUnloadPage:
+		debug(3, "ignoring kFuncUnloadPage(%d)", param1);
+		_pendingPageChanges.push_back(PendingPageChange(param1, true));
+		return 1;
+	case kFuncSetPalette:
+		// TODO: return 0 if not disabling (0) and doesn't exist
+		debug(4, "kFuncSetPalette(%d, %d)", param1, param2);
+		loadCTBL(param1, param2);
+		// TODO: incomplete?
+		return 1;
+	case kFuncSaveVars:
+		debug(3, "kFuncSaveVars(%d)", param1);
+		{
+		Common::String filename = _targetName + Common::String::format(".%03d", param1);
+		Common::WriteStream *stream = _saveFileMan->openForSaving(filename);
+		for (uint i = 0; i < 1000; i++) {
+			stream->writeUint16LE(_vars[i]);
+		}
+		delete stream;
+		}
+		return 1;
+	case kFuncLoadVars:
+		debug(3, "kFuncLoadVars(%d, %d, %d)", param1, param2, param3);
+		{
+		Common::String filename = _targetName + Common::String::format(".%03d", param1);
+		Common::SeekableReadStream *stream = _saveFileMan->openForLoading(filename);
+		if (!stream) {
+			if (!_bookIni.hasKey(Common::String::format("%d", param1), "Data"))
+				return 0;
+			filename = getFilename("Data", param1);
+			Common::File *file = new Common::File();
+			if (!file->open(filename))
+				error("couldn't open '%s' to get vars id '%d'", filename.c_str(), param1);
+			stream = file;
+		}
+		if (param3 == 0)
+			param3 = 1000;
+		else
+			param3 = param3;
+		if (param2 < 0 || param3 < 0 || param2 + param3 > 1000)
+			error("can't read %d entries into %d from file '%s' for vars id '%d'", param3, param2, filename.c_str(), param1);
+		stream->skip(param2 * 2);
+		for (uint i = 0; i < (uint)param3; i++) {
+			if (stream->pos() + 1 > stream->size())
+				break;
+			_vars[param2 + i] = stream->readUint16LE();
+		}
+		delete stream;
+		}
+		return 1;
+	case kFuncQueueScriptOnce:
+		debug(3, "kFuncQueueScriptOnce(%d, %d, %d)", param1, param2, param3);
+		_queuedScripts[param1]._baseTime = _system->getMillis();
+		_queuedScripts[param1]._duration = 10 * param2;
+		_queuedScripts[param1]._count = 1;
+		_queuedScripts[param1]._scriptId = param3;
+		return 0;
+	case kFuncGetMousePos:
+		// TODO
+		warning("ignoring kFuncGetMousePos(%d, %d)", param1, param2);
+		return 0;
+	case kFuncChangeBackground:
+		// TODO
+		warning("ignoring kFuncChangeBackground(%d)", param1);
+		// TODO: return 1 if background existed, else 0
+		return 0;
+	case kFuncSetBackgroundColor:
+		// TODO
+		warning("ignoring kFuncSetBackgroundColor(%d)", param1);
+		return 0;
+	case kFuncClearSprites:
+		// TODO
+		warning("ignoring kFuncClearSprites()");
+		return 0;
+	case kFuncAddSprite:
+		{
+		Common::Point pos(_vars[param3], _vars[param3 + 1]);
+		int16 zorder = _vars[param3 + 2];
+		debug(3, "kFuncAddSprite(%d, %d, [%d = (%d, %d), %d])", param1, param2, param3, pos.x, pos.y, zorder);
+		addSprite(param1, param2, zorder, pos);
+		}
+		return 0;
+	case kFuncRemoveSprite:
+		debug(3, "kFuncRemoveSprite(%d, %d)", param1, param2);
+		removeSprite(param1, param2);
+		return 0;
+	case kFuncQuit:
+		// TODO
+		warning("ignoring kFuncQuit()");
+		return 0;
+	case kFuncSaveData:
+		// TODO
+		warning("ignoring kFuncSaveData(%d, %d, %d)", param1, param2, param3);
+		return 1;
+	case kFuncLoadData:
+		debug(3, "kFuncLoadData(%d, %d, %d)", param1, param2, param3);
+		{
+		Common::String filename = getFilename("Data", param1);
+		Common::File *file = new Common::File();
+		if (!file->open(filename))
+			error("couldn't open '%s' to get data id '%d'", filename.c_str(), param1);
+		if (param3 == 0)
+			param3 = 1000;
+		else
+			param3 = param3;
+		if (param2 < 0 || param3 < 0 || param2 + param3 > 1000)
+			error("can't read %d entries into %d from file '%s' for data id '%d'", param3, param2, filename.c_str(), param1);
+		for (uint i = 0; i < (uint)param3; i++) {
+			if (file->pos() + 1 > file->size())
+				break;
+			_vars[param2 + i] = file->readUint16LE();
+		}
+		delete file;
+		}
+		return 1;
+	case kFuncGetSpriteSize:
+		debug(3, "kFuncGetSpriteSize(%d, %d, %d)", param1, param2, param3);
+		int16 width, height;
+		width = 0;
+		height = 0;
+		{
+		Common::SeekableReadStream *stream = getStreamForSprite(param1);
+		if (stream) {
+			stream->readUint16LE();
+			height = stream->readSint16LE();
+			width = stream->readSint16LE();
+			delete stream;
+		}
+		}
+		_vars[param2] = width;
+		_vars[param3] = height;
+		return 0;
+	default:
+		error("unknown scriptFuncCall %d(%d, %d, %d)", (uint32)id, param1, param2, param3);
+	}
+}
+
+} // End of namespace Composer
-- 
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