From 40e5e03e32f08562738abde8a22ce4b0c98264f0 Mon Sep 17 00:00:00 2001
From: Bertrand Augereau
Date: Tue, 28 Jun 2011 05:10:35 +0200
Subject: DREAMWEB: Blacklisted liftsprite

---
 engines/dreamweb/dreamgen.cpp | 93 -------------------------------------------
 engines/dreamweb/dreamgen.h   |  3 +-
 engines/dreamweb/stubs.cpp    | 76 ++++++++++++++++++++++++++++++++++-
 engines/dreamweb/stubs.h      |  4 ++
 4 files changed, 80 insertions(+), 96 deletions(-)

(limited to 'engines/dreamweb')

diff --git a/engines/dreamweb/dreamgen.cpp b/engines/dreamweb/dreamgen.cpp
index 478a7380e7..ce978b223d 100644
--- a/engines/dreamweb/dreamgen.cpp
+++ b/engines/dreamweb/dreamgen.cpp
@@ -2955,98 +2955,6 @@ steadyob:
 	steady();
 }
 
-void DreamGenContext::liftsprite() {
-	STACK_CHECK;
-	al = data.byte(kLiftflag);
-	_cmp(al, 0);
-	if (flags.z())
-		goto liftclosed;
-	_cmp(al, 1);
-	if (flags.z())
-		goto liftopen;
-	_cmp(al, 3);
-	if (flags.z())
-		goto openlift;
-	al = es.byte(bx+19);
-	_cmp(al, 0);
-	if (flags.z())
-		goto finishclose;
-	_dec(al);
-	_cmp(al, 11);
-	if (!flags.z())
-		goto pokelift;
-	push(ax);
-	al = 3;
-	liftnoise();
-	ax = pop();
-	goto pokelift;
-finishclose:
-	data.byte(kLiftflag) = 0;
-	return;
-openlift:
-	al = es.byte(bx+19);
-	_cmp(al, 12);
-	if (flags.z())
-		goto endoflist;
-	_inc(al);
-	_cmp(al, 1);
-	if (!flags.z())
-		goto pokelift;
-	push(ax);
-	al = 2;
-	liftnoise();
-	ax = pop();
-pokelift:
-	es.byte(bx+19) = al;
-	ah = 0;
-	push(di);
-	_add(di, ax);
-	al = ds.byte(di+18);
-	di = pop();
-	es.byte(bx+15) = al;
-	ds.byte(di+17) = al;
-	return;
-endoflist:
-	data.byte(kLiftflag) = 1;
-	return;
-liftopen:
-	al = data.byte(kLiftpath);
-	push(es);
-	push(bx);
-	turnpathon();
-	bx = pop();
-	es = pop();
-	_cmp(data.byte(kCounttoclose), 0);
-	if (flags.z())
-		goto nocountclose;
-	_dec(data.byte(kCounttoclose));
-	_cmp(data.byte(kCounttoclose), 0);
-	if (!flags.z())
-		goto nocountclose;
-	data.byte(kLiftflag) = 2;
-nocountclose:
-	al = 12;
-	goto pokelift;
-liftclosed:
-	al = data.byte(kLiftpath);
-	push(es);
-	push(bx);
-	turnpathoff();
-	bx = pop();
-	es = pop();
-	_cmp(data.byte(kCounttoopen), 0);
-	if (flags.z())
-		goto nocountopen;
-	_dec(data.byte(kCounttoopen));
-	_cmp(data.byte(kCounttoopen), 0);
-	if (!flags.z())
-		goto nocountopen;
-	data.byte(kLiftflag) = 3;
-nocountopen:
-	al = 0;
-	goto pokelift;
-}
-
 void DreamGenContext::liftnoise() {
 	STACK_CHECK;
 	_cmp(data.byte(kReallocation), 5);
@@ -21687,7 +21595,6 @@ void DreamGenContext::__dispatch_call(uint16 addr) {
 		case addr_getblockofpixel: getblockofpixel(); break;
 		case addr_showrain: showrain(); break;
 		case addr_backobject: backobject(); break;
-		case addr_liftsprite: liftsprite(); break;
 		case addr_liftnoise: liftnoise(); break;
 		case addr_random: random(); break;
 		case addr_steady: steady(); break;
diff --git a/engines/dreamweb/dreamgen.h b/engines/dreamweb/dreamgen.h
index f7e19f2eec..d924c62c3c 100644
--- a/engines/dreamweb/dreamgen.h
+++ b/engines/dreamweb/dreamgen.h
@@ -653,7 +653,6 @@ public:
 	static const uint16 addr_steady = 0xc180;
 	static const uint16 addr_random = 0xc17c;
 	static const uint16 addr_liftnoise = 0xc178;
-	static const uint16 addr_liftsprite = 0xc174;
 	static const uint16 addr_backobject = 0xc170;
 	static const uint16 addr_showrain = 0xc16c;
 	static const uint16 addr_getblockofpixel = 0xc168;
@@ -1455,7 +1454,7 @@ public:
 	void dealwithspecial();
 	//void eraseoldobs();
 	void dircom();
-	void liftsprite();
+	//void liftsprite();
 	void dumpkeypad();
 	void dumpzoom();
 	void endgameseq();
diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
index d0fdf6fd42..3271b701d6 100644
--- a/engines/dreamweb/stubs.cpp
+++ b/engines/dreamweb/stubs.cpp
@@ -825,7 +825,7 @@ void DreamGenContext::backobject(Sprite* sprite) {
 	else if (objData->type == 4)
 		lockeddoorway();
 	else if (objData->type == 3)
-		liftsprite();
+		liftsprite(sprite, objData);
 	else if (objData->type == 2)
 		doorway();
 	else if (objData->type == 1)
@@ -913,6 +913,80 @@ void DreamGenContext::steady(Sprite* sprite, ObjData* objData) {
 	sprite->b15 = b18;
 }
 
+void DreamGenContext::turnpathonCPP(uint8 param) {
+	al = param;
+	push(es);
+	push(bx);
+	turnpathon();
+	bx = pop();
+	es = pop();
+}
+
+void DreamGenContext::turnpathoffCPP(uint8 param) {
+	al = param;
+	push(es);
+	push(bx);
+	turnpathoff();
+	bx = pop();
+	es = pop();
+}
+
+void DreamGenContext::liftsprite() {
+	Sprite *sprite = (Sprite*)es.ptr(bx, sizeof(Sprite));
+	ObjData *objData = (ObjData*)ds.ptr(di, 0);
+	liftsprite(sprite, objData);
+}
+
+void DreamGenContext::liftsprite(Sprite* sprite, ObjData* objData) {
+	uint8 liftFlag = data.byte(kLiftflag);
+	if (liftFlag == 0) { //liftclosed
+		turnpathoffCPP(data.byte(kLiftpath));
+
+		if (data.byte(kCounttoopen) != 0) {
+			_dec(data.byte(kCounttoopen));
+			if (data.byte(kCounttoopen) == 0)
+				data.byte(kLiftflag) = 3;
+		}
+		sprite->frame = 0;
+		sprite->b15 = objData->b17 = objData->b18[sprite->frame];
+	}
+	else if (liftFlag == 1) {  //liftopen
+		turnpathonCPP(data.byte(kLiftpath));
+
+		if (data.byte(kCounttoclose) != 0) {
+			_dec(data.byte(kCounttoclose));
+			if (data.byte(kCounttoclose) == 0)
+				data.byte(kLiftflag) = 2;
+		}
+		sprite->frame = 12;
+		sprite->b15 = objData->b17 = objData->b18[sprite->frame];
+	}	
+	else if (liftFlag == 3) { //openlift
+		if (sprite->frame == 12) {
+			data.byte(kLiftflag) = 1;
+			return;
+		}
+		++sprite->frame;
+		if (sprite->frame == 1) {
+			al = 2;
+			liftnoise();
+		}
+		sprite->b15 = objData->b17 = objData->b18[sprite->frame];
+	} else { //closeLift
+		assert(liftFlag == 2);
+		if (sprite->frame == 0) {
+			data.byte(kLiftflag) = 0;
+			return;
+		}
+		--sprite->frame;
+		if (sprite->frame == 11) {
+			al = 3;
+			liftnoise();
+		}
+		sprite->b15 = objData->b17 = objData->b18[sprite->frame];
+	}
+}
+
 void DreamGenContext::modifychar() {
 	al = engine->modifyChar(al);
 }
diff --git a/engines/dreamweb/stubs.h b/engines/dreamweb/stubs.h
index d840a8c8fa..461cef7419 100644
--- a/engines/dreamweb/stubs.h
+++ b/engines/dreamweb/stubs.h
@@ -31,6 +31,10 @@
 	void steady(Sprite* sprite, ObjData* objData);
 	void dodoor();
 	void dodoor(Sprite* sprite, ObjData* objData);
+	void liftsprite();
+	void liftsprite(Sprite* sprite, ObjData* objData);
+	void turnpathonCPP(uint8 param);
+	void turnpathoffCPP(uint8 param);
 	void modifychar();
 	void lockmon();
 
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