From 663ca4774f2a51287212140b39a4c1e96309a06d Mon Sep 17 00:00:00 2001
From: Bertrand Augereau
Date: Fri, 19 Aug 2011 10:35:29 +0200
Subject: DREAMWEB: 'findormake' ported to C++

---
 engines/dreamweb/dreamgen.cpp | 30 ------------------------------
 engines/dreamweb/dreamgen.h   | 13 ++++++-------
 engines/dreamweb/structs.h    |  8 ++++++++
 engines/dreamweb/stubs.cpp    | 25 +++++++++++++++++++++++++
 engines/dreamweb/stubs.h      |  2 ++
 5 files changed, 41 insertions(+), 37 deletions(-)

(limited to 'engines')

diff --git a/engines/dreamweb/dreamgen.cpp b/engines/dreamweb/dreamgen.cpp
index a20d03c6b0..789a016f6b 100644
--- a/engines/dreamweb/dreamgen.cpp
+++ b/engines/dreamweb/dreamgen.cpp
@@ -11328,35 +11328,6 @@ void DreamGenContext::removefreeobject() {
 	es = pop();
 }
 
-void DreamGenContext::findormake() {
-	STACK_CHECK;
-	bx = (0+(228*13)+32+60+(32*32)+(11*10*3)+768+768+768+(32*32)+(128*5)+(80*5)+(100*5)+(12*5)+(46*40)+(5*80));
-	push(ax);
-	es = data.word(kBuffers);
-	ah = data.byte(kReallocation);
-changeloop:
-	_cmp(es.byte(bx), 255);
-	if (flags.z())
-		goto haventfound;
-	_cmp(ax, es.word(bx));
-	if (!flags.z())
-		goto nofoundchange;
-	_cmp(ch, es.byte(bx+3));
-	if (flags.z())
-		goto foundchange;
-nofoundchange:
-	_add(bx, 4);
-	goto changeloop;
-foundchange:
-	ax = pop();
-	es.byte(bx+2) = cl;
-	return;
-haventfound:
-	es.word(bx) = ax;
-	es.word(bx+2) = cx;
-	ax = pop();
-}
-
 void DreamGenContext::switchryanon() {
 	STACK_CHECK;
 	data.byte(kRyanon) = 255;
@@ -18719,7 +18690,6 @@ void DreamGenContext::__dispatch_call(uint16 addr) {
 		case addr_issetobonmap: issetobonmap(); break;
 		case addr_placefreeobject: placefreeobject(); break;
 		case addr_removefreeobject: removefreeobject(); break;
-		case addr_findormake: findormake(); break;
 		case addr_switchryanon: switchryanon(); break;
 		case addr_switchryanoff: switchryanoff(); break;
 		case addr_setallchanges: setallchanges(); break;
diff --git a/engines/dreamweb/dreamgen.h b/engines/dreamweb/dreamgen.h
index 028df367a0..9496c50607 100644
--- a/engines/dreamweb/dreamgen.h
+++ b/engines/dreamweb/dreamgen.h
@@ -307,7 +307,6 @@ public:
 	static const uint16 addr_setallchanges = 0xc704;
 	static const uint16 addr_switchryanoff = 0xc700;
 	static const uint16 addr_switchryanon = 0xc6fc;
-	static const uint16 addr_findormake = 0xc6f8;
 	static const uint16 addr_removefreeobject = 0xc6f4;
 	static const uint16 addr_placefreeobject = 0xc6f0;
 	static const uint16 addr_issetobonmap = 0xc6ec;
@@ -1372,6 +1371,7 @@ public:
 	void getexpos();
 	void fadedos();
 	//void fillspace();
+	void selectlocation();
 	//void multiget();
 	//void autosetwalk();
 	void fadeupmonfirst();
@@ -1407,7 +1407,7 @@ public:
 	void useelevator5();
 	void useelevator4();
 	void useelevator1();
-	void attendant();
+	//void findormake();
 	void useelevator3();
 	void useelevator2();
 	void buttonone();
@@ -1427,7 +1427,7 @@ public:
 	void slabdoore();
 	void slabdoord();
 	void adjustup();
-	void readsetdata();
+	void slabdoorf();
 	void loadintotemp();
 	void loadintroroom();
 	void saveseg();
@@ -1443,7 +1443,6 @@ public:
 	void showdiary();
 	void purgealocation();
 	//void updatepeople();
-	void slabdoorf();
 	void addtopeoplelist();
 	void hangoncurs();
 	void sparkydrip();
@@ -1571,7 +1570,7 @@ public:
 	//void doblocks();
 	void restoreall();
 	void allpalette();
-	void findormake();
+	void attendant();
 	void nextsymbol();
 	void monks2text();
 	void clearpalette();
@@ -1868,7 +1867,7 @@ public:
 	void calledensdlift();
 	void checkinside();
 	void gates();
-	void selectlocation();
+	void newgame();
 	void showwatch();
 	void turnanypathon();
 	void restorereels();
@@ -2025,7 +2024,7 @@ public:
 	void getridoftempsp();
 	void scanfornames();
 	void setallchanges();
-	void newgame();
+	void readsetdata();
 	//void printboth();
 	void standardload();
 	void undertextline();
diff --git a/engines/dreamweb/structs.h b/engines/dreamweb/structs.h
index 8a9d81c9a5..8b8e1153e5 100644
--- a/engines/dreamweb/structs.h
+++ b/engines/dreamweb/structs.h
@@ -194,3 +194,11 @@ struct Rain {
 	uint8 b5;
 };
 
+struct Change {
+	uint8 b0;
+	uint8 location;
+	uint8 b2;
+	uint8 b3;
+};
+
+
diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
index 7d809f2ca0..76f6de4d7c 100644
--- a/engines/dreamweb/stubs.cpp
+++ b/engines/dreamweb/stubs.cpp
@@ -1041,6 +1041,31 @@ void DreamGenContext::walktotext() {
 	commandwithob(3, data.byte(kCommandtype), data.byte(kCommand));
 }
 
+void DreamGenContext::findormake() {
+	uint8 b0 = al;
+	uint8 b2 = cl;
+	uint8 b3 = ch;
+	findormake(b0, b2, b3);
+}
+
+void DreamGenContext::findormake(uint8 b0, uint8 b2, uint8 b3) {
+	Change *change = (Change *)segRef(data.word(kBuffers)).ptr(kListofchanges, sizeof(Change));
+	while (true) {
+		if (change->b0 == 0xff) {
+			change->b0 = b0;
+			change->location = data.byte(kReallocation);
+			change->b2 = b2;
+			change->b3 = b3;
+			return;
+		}
+		if ((b0 == change->b0) && (data.byte(kReallocation) == change->location) && (b3 == change->b3)) {
+			change->b2 = b2;
+			return;
+		}
+		++change;
+	}
+}
+
 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 705fcd90f1..dd5b6399e7 100644
--- a/engines/dreamweb/stubs.h
+++ b/engines/dreamweb/stubs.h
@@ -149,5 +149,7 @@
 	void walktotext();
 	void personnametext();
 	void findxyfrompath();
+	void findormake();
+	void findormake(uint8 b0, uint8 b2, uint8 b3);
 	bool isCD();
 
-- 
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