From bed16296425df6def9b59ebe7df6f5ee45dcf035 Mon Sep 17 00:00:00 2001
From: Max Horn <max@quendi.de>
Date: Thu, 31 Mar 2005 23:11:39 +0000
Subject: [PATCH] Made findResourceSmall local to resource.cpp; simplified
 _EPAL_offs (since we don't use it nor save it at this time, this is
 harmless); added a comment about _CLUT_offs ugliness

svn-id: r17314
---
 scumm/resource.cpp |  7 ++++---
 scumm/resource.h   |  2 --
 scumm/scumm.cpp    | 18 +++++++++++++-----
 3 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/scumm/resource.cpp b/scumm/resource.cpp
index 0899ffcd683..3c54c6b95b2 100644
--- a/scumm/resource.cpp
+++ b/scumm/resource.cpp
@@ -36,6 +36,7 @@ namespace Scumm {
 
 static uint16 newTag2Old(uint32 newTag);
 static const char *resTypeFromId(int id);
+static const byte *findResourceSmall(uint32 tag, const byte *searchin);
 
 
 /* Open a room */
@@ -909,11 +910,11 @@ int ScummEngine::getResourceDataSize(const byte *ptr) const {
 		return 0;
 
 	if (_features & GF_OLD_BUNDLE)
-		return READ_LE_UINT16(ptr) - 4;
+		return READ_LE_UINT16(ptr) - _resourceHeaderSize;
 	else if (_features & GF_SMALL_HEADER)
-		return READ_LE_UINT32(ptr) - 6;
+		return READ_LE_UINT32(ptr) - _resourceHeaderSize;
 	else
-		return READ_BE_UINT32(ptr - 4) - 8;
+		return READ_BE_UINT32(ptr - 4) - _resourceHeaderSize;
 }
 
 void ResourceManager::lock(int type, int i) {
diff --git a/scumm/resource.h b/scumm/resource.h
index 7e1901f8172..58498ca8169 100644
--- a/scumm/resource.h
+++ b/scumm/resource.h
@@ -37,8 +37,6 @@ enum {
 };
 
 
-const byte *findResourceSmall(uint32 tag, const byte *searchin);
-
 class ResourceIterator {
 	uint32 _size;
 	uint32 _pos;
diff --git a/scumm/scumm.cpp b/scumm/scumm.cpp
index ec6e621cacf..510f38e7439 100644
--- a/scumm/scumm.cpp
+++ b/scumm/scumm.cpp
@@ -2421,7 +2421,7 @@ void ScummEngine::initRoomSubBlocks() {
 				// FIXME. This is an evil HACK!!!
 				size = (READ_LE_UINT16(roomptr + 0x0A) - READ_LE_UINT16(roomptr + 0x15)) - size;
 			else
-				size = getResourceDataSize(ptr - size - 6) - size;
+				size = getResourceDataSize(ptr - size - _resourceHeaderSize) - size;
 
 			if (size > 0) {					// do this :)
 				createResource(rtMatrix, 1, size);
@@ -2611,10 +2611,9 @@ void ScummEngine::initRoomSubBlocks() {
 		}
 	}
 
+	// Locate the EGA palette (currently unused).
 	if (_features & GF_OLD_BUNDLE)
 		ptr = 0;
-	else if (_features & GF_SMALL_HEADER)
-		ptr = findResourceSmall(MKID('EPAL'), roomptr);
 	else
 		ptr = findResourceData(MKID('EPAL'), roomptr);
 
@@ -2622,17 +2621,26 @@ void ScummEngine::initRoomSubBlocks() {
 		_EPAL_offs = ptr - roomptr;
 	}
 
+	// Locate the standard room palette (for V3-V5 games).
+	// Note: We used to use findResourceSmall instead of findResourceData;
+	// in the small header case. That means we have to do some ugly trickery
+	// in order to emulate the old behaviour. It would be very nice to get
+	// rid of that. That would require some changes to the palette code.
+	//
+	// And of course this would break savegame compatibility unless extra code
+	// were added to the save/load system to cope with this.
 	if (_features & GF_OLD_BUNDLE)
 		ptr = 0;
-	else if (_features & GF_SMALL_HEADER)
-		ptr = findResourceSmall(MKID('CLUT'), roomptr);
 	else
 		ptr = findResourceData(MKID('CLUT'), roomptr);
 
 	if (ptr) {
+		if ((_features & GF_SMALL_HEADER) && ptr)
+			ptr -= _resourceHeaderSize;
 		_CLUT_offs = ptr - roomptr;
 	}
 
+	// Locate the standard room palettes (for V6+ games).
 	if (_version >= 6) {
 		ptr = findResource(MKID('PALS'), roomptr);
 		if (ptr) {