DREAMWEB: 'compare' ported to C++

4 files changed, 19 insertions, 21 deletions

diff --git a/engines/dreamweb/dreamgen.cpp b/engines/dreamweb/dreamgen.cpp
index 58c461963f..a426cedb73 100644
--- a/engines/dreamweb/dreamgen.cpp
+++ b/engines/dreamweb/dreamgen.cpp
@@ -10535,23 +10535,6 @@ doselob:
 	useroutine();
 }
 
-void DreamGenContext::compare() {
-	STACK_CHECK;
-	_sub(dl, 'A');
-	_sub(dh, 'A');
-	_sub(cl, 'A');
-	_sub(ch, 'A');
-	push(cx);
-	push(dx);
-	getanyaddir();
-	dx = pop();
-	cx = pop();
-	_cmp(es.word(bx+12), cx);
-	if (!flags.z())
-		return /* (comparefin) */;
-	_cmp(es.word(bx+14), dx);
-}
-
 void DreamGenContext::findsetobject() {
 	STACK_CHECK;
 	_sub(al, 'A');
@@ -17893,7 +17876,6 @@ void DreamGenContext::__dispatch_call(uint16 addr) {
 		case addr_useelvdoor: useelvdoor(); break;
 		case addr_withwhat: withwhat(); break;
 		case addr_selectob: selectob(); break;
-		case addr_compare: compare(); break;
 		case addr_findsetobject: findsetobject(); break;
 		case addr_findexobject: findexobject(); break;
 		case addr_isryanholding: isryanholding(); break;
diff --git a/engines/dreamweb/dreamgen.h b/engines/dreamweb/dreamgen.h
index 04bef1670d..3b680025cd 100644
--- a/engines/dreamweb/dreamgen.h
+++ b/engines/dreamweb/dreamgen.h
@@ -297,7 +297,6 @@ public:
 	static const uint16 addr_isryanholding = 0xc6cc;
 	static const uint16 addr_findexobject = 0xc6c8;
 	static const uint16 addr_findsetobject = 0xc6c4;
-	static const uint16 addr_compare = 0xc6c0;
 	static const uint16 addr_selectob = 0xc6bc;
 	static const uint16 addr_withwhat = 0xc6b8;
 	static const uint16 addr_useelvdoor = 0xc6b4;
@@ -1359,7 +1358,7 @@ public:
 	void showdiscops();
 	void advisor();
 	void additionaltext();
-	//void kernchars();
+	//void compare();
 	void othersmoker();
 	void dofade();
 	//void setuptimedtemp();
@@ -1406,7 +1405,7 @@ public:
 	//void addtopeoplelist();
 	void hangoncurs();
 	void sparkydrip();
-	void compare();
+	//void kernchars();
 	void printcurs();
 	//void convertkey();
 	void outofopen();
diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
index 923c63602a..3a01872542 100644
--- a/engines/dreamweb/stubs.cpp
+++ b/engines/dreamweb/stubs.cpp
@@ -1717,6 +1717,21 @@ void DreamGenContext::obicons() {
 	}
 }
 
+void DreamGenContext::compare() {
+	char id[4] = { cl, ch, dl, dh };
+	flags._z = compare(al, ah, id);
+}
+
+bool DreamGenContext::compare(uint8 index, uint8 flag, const char id[4]) {
+	void *ptr = getanyaddir(index, flag);
+	const char *objId = (const char *)(((const uint8 *)ptr) + 12); // whether it is a DynObject or a SetObject
+	for (size_t i = 0; i < 4; ++i) {
+		if(id[i] != objId[i] + 'A')
+			return false;
+	}
+	return true;
+}
+
 bool DreamGenContext::isCD() {
 	// The original sources has two codepaths depending if the game is 'if cd' or not
 	// This is a hack to guess which version to use with the assumption that if we have a cd version
diff --git a/engines/dreamweb/stubs.h b/engines/dreamweb/stubs.h
index 6d431a856f..f99f0d6fbb 100644
--- a/engines/dreamweb/stubs.h
+++ b/engines/dreamweb/stubs.h
@@ -208,4 +208,6 @@
 	void obpicture();
 	void transferinv();
 	void obicons();
+	void compare();
+	bool compare(uint8 index, uint8 flag, const char id[4]);