From 98a6b339afcb6bb177ef898f2a83633269d2eea7 Mon Sep 17 00:00:00 2001
From: Bertrand Augereau <bertrand_augereau@yahoo.fr>
Date: Fri, 2 Sep 2011 06:38:08 +0200
Subject: [PATCH] DREAMWEB: 'checkpathison' ported to C++

---
 devtools/tasmrecover/tasm-recover |  1 +
 engines/dreamweb/dreamgen.cpp     | 15 ---------------
 engines/dreamweb/dreamgen.h       |  3 +--
 engines/dreamweb/pathfind.cpp     | 18 ++++++++++++++----
 engines/dreamweb/structs.h        |  2 +-
 engines/dreamweb/stubs.h          |  2 ++
 6 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/devtools/tasmrecover/tasm-recover b/devtools/tasmrecover/tasm-recover
index 7967acc87c8e..1d5e11bdae43 100755
--- a/devtools/tasmrecover/tasm-recover
+++ b/devtools/tasmrecover/tasm-recover
@@ -182,6 +182,7 @@ generator = cpp(context, "DreamGen", blacklist = [
 	'turnanypathoff',
 	'isitdescribed',
 	'checkifset',
+	'checkifpathison',
 	], skip_output = [
 	# These functions are processed but not output
 	'dreamweb',
diff --git a/engines/dreamweb/dreamgen.cpp b/engines/dreamweb/dreamgen.cpp
index d59ff61a94bf..79e4746fb454 100644
--- a/engines/dreamweb/dreamgen.cpp
+++ b/engines/dreamweb/dreamgen.cpp
@@ -14882,20 +14882,6 @@ void DreamGenContext::findfirstpath() {
 	al = es.byte(bx+6);
 }
 
-void DreamGenContext::checkifpathison() {
-	STACK_CHECK;
-	push(ax);
-	getroomspaths();
-	ax = pop();
-	ah = 0;
-	_add(ax, ax);
-	_add(ax, ax);
-	_add(ax, ax);
-	_add(bx, ax);
-	al = es.byte(bx+6);
-	_cmp(al, 255);
-}
-
 void DreamGenContext::afternewroom() {
 	STACK_CHECK;
 	_cmp(data.byte(kNowinnewroom), 0);
@@ -17852,7 +17838,6 @@ void DreamGenContext::__dispatch_call(uint16 addr) {
 		case addr_identifyob: identifyob(); break;
 		case addr_findpathofpoint: findpathofpoint(); break;
 		case addr_findfirstpath: findfirstpath(); break;
-		case addr_checkifpathison: checkifpathison(); break;
 		case addr_afternewroom: afternewroom(); break;
 		case addr_atmospheres: atmospheres(); break;
 		case addr_walkintoroom: walkintoroom(); break;
diff --git a/engines/dreamweb/dreamgen.h b/engines/dreamweb/dreamgen.h
index a27665bf37e1..c2674c2d421a 100644
--- a/engines/dreamweb/dreamgen.h
+++ b/engines/dreamweb/dreamgen.h
@@ -110,7 +110,6 @@ class DreamGenContext : public Context {
 	static const uint16 addr_walkintoroom = 0xca10;
 	static const uint16 addr_atmospheres = 0xca0c;
 	static const uint16 addr_afternewroom = 0xca08;
-	static const uint16 addr_checkifpathison = 0xca04;
 	static const uint16 addr_findfirstpath = 0xc9f0;
 	static const uint16 addr_findpathofpoint = 0xc9ec;
 	static const uint16 addr_identifyob = 0xc9d4;
@@ -1576,7 +1575,7 @@ class DreamGenContext : public Context {
 	void usecooker();
 	void loadmenu();
 	void checkforemm();
-	void checkifpathison();
+	//void checkifpathison();
 	//void finalframe();
 	void receptionist();
 	void selectslot();
diff --git a/engines/dreamweb/pathfind.cpp b/engines/dreamweb/pathfind.cpp
index ef0719921193..9069c9d3be64 100644
--- a/engines/dreamweb/pathfind.cpp
+++ b/engines/dreamweb/pathfind.cpp
@@ -36,7 +36,7 @@ void DreamGenContext::turnpathon(uint8 param) {
 	PathNode *roomsPaths = getroomspathsCPP()->nodes;
 	if (param == 0xff)
 		return;
-	roomsPaths[param].b6 = 0xff;
+	roomsPaths[param].on = 0xff;
 }
 
 void DreamGenContext::turnpathoff() {
@@ -48,13 +48,13 @@ void DreamGenContext::turnpathoff(uint8 param) {
 	PathNode *roomsPaths = getroomspathsCPP()->nodes;
 	if (param == 0xff)
 		return;
-	roomsPaths[param].b6 = 0x00;
+	roomsPaths[param].on = 0x00;
 }
 
 void DreamGenContext::turnanypathon(uint8 param, uint8 room) {
 	findormake(param, 0xff, room + 100);
 	PathNode *paths = (PathNode *)segRef(data.word(kReels)).ptr(kPathdata + 144 * room, 0);
-	paths[param].b6 = 0xff;
+	paths[param].on = 0xff;
 }
 
 
@@ -65,7 +65,7 @@ void DreamGenContext::turnanypathon() {
 void DreamGenContext::turnanypathoff(uint8 param, uint8 room) {
 	findormake(param, 0x00, room + 100);
 	PathNode *paths = (PathNode *)segRef(data.word(kReels)).ptr(kPathdata + 144 * room, 0);
-	paths[param].b6 = 0x00;
+	paths[param].on = 0x00;
 }
 
 void DreamGenContext::turnanypathoff() {
@@ -128,5 +128,15 @@ void DreamGenContext::findxyfrompath() {
 	data.byte(kRyany) = roomsPaths[data.byte(kManspath)].y - 12;
 }
 
+void DreamGenContext::checkifpathison() {
+	flags._z = checkifpathison(al);
+}
+
+bool DreamGenContext::checkifpathison(uint8 index) {
+	RoomPaths *roomsPaths = getroomspathsCPP();
+	uint8 pathOn = roomsPaths->nodes[index].on;
+	return pathOn == 0xff;
+}
+
 } /*namespace dreamgen */
 
diff --git a/engines/dreamweb/structs.h b/engines/dreamweb/structs.h
index 7c9d9a581473..0d7bbb6cbfe3 100644
--- a/engines/dreamweb/structs.h
+++ b/engines/dreamweb/structs.h
@@ -235,7 +235,7 @@ struct PathNode {
 	uint8 b3;
 	uint8 b4;
 	uint8 b5;
-	uint8 b6;
+	uint8 on;
 	uint8 dir;
 };
 
diff --git a/engines/dreamweb/stubs.h b/engines/dreamweb/stubs.h
index da743c05f01d..a272407b4f6b 100644
--- a/engines/dreamweb/stubs.h
+++ b/engines/dreamweb/stubs.h
@@ -220,4 +220,6 @@
 	bool isitdescribed(const ObjPos *objPos);
 	void checkifset();
 	bool checkifset(uint8 x, uint8 y);
+	void checkifpathison();
+	bool checkifpathison(uint8 index);