added Patch.re_ support

svn-id: r18603

4 files changed, 48 insertions, 12 deletions

diff --git a/saga/game.cpp b/saga/game.cpp
index 2a06dd7237..b68dfef01f 100644
--- a/saga/game.cpp
+++ b/saga/game.cpp
@@ -601,7 +601,7 @@ static GameFileDescription IHNMCD_GameFiles[] = {
 	{"musicfm.res", GAME_MUSICFILE_FM},
 	{"musicgm.res", GAME_MUSICFILE_GM},
 	{"scream.res", GAME_RESOURCEFILE},
-	{"patch.re_", GAME_PATCHFILE},
+	{"patch.re_", GAME_PATCHFILE | GAME_RESOURCEFILE},
 	{"scripts.res", GAME_SCRIPTFILE},
 	{"sfx.res", GAME_SOUNDFILE},
 	{"voicess.res", GAME_VOICEFILE}, //order of voice bank file is important
@@ -619,7 +619,7 @@ static GameFileDescription IHNMCDDE_GameFiles[] = {
 	{"musicgm.res", GAME_MUSICFILE_GM},
 	{"scream.res", GAME_RESOURCEFILE},
 	{"scripts.res", GAME_SCRIPTFILE},
-	{"patch.re_", GAME_PATCHFILE},
+	{"patch.re_", GAME_PATCHFILE | GAME_RESOURCEFILE},
 	{"sfx.res", GAME_SOUNDFILE},
 	{"voicess.res", GAME_VOICEFILE}, //order of voice bank file is important
 	{"voices1.res", GAME_VOICEFILE},
diff --git a/saga/rscfile.cpp b/saga/rscfile.cpp
index c93bbcd980..3f933b99dd 100644
--- a/saga/rscfile.cpp
+++ b/saga/rscfile.cpp
@@ -48,6 +48,11 @@ bool Resource::loadContext(ResourceContext *context) {
 	ResourceData *resourceData;
 	byte *tableBuffer;
 	size_t tableSize;
+	uint16 subjectResourceType;
+	ResourceContext *subjectContext;
+	uint32 subjectResourceId;
+	uint32 patchResourceId;
+	ResourceData *subjectResourceData;
 
 	if (!context->file->open(context->fileName)) {
 		return false;
@@ -103,7 +108,29 @@ bool Resource::loadContext(ResourceContext *context) {
 
 	free(tableBuffer);
 
-	//process patch files
+	//process internal patch files
+	if (GAME_PATCHFILE & context->fileType) {
+		subjectResourceType = ~GAME_PATCHFILE & context->fileType;
+		subjectContext = getContext(subjectResourceType);
+		if (subjectContext == NULL) {
+			error("Resource::loadContext() Subject context not found");
+		}
+		loadResource(context, context->count - 1, tableBuffer, tableSize);
+
+		MemoryReadStreamEndian readS2(tableBuffer, tableSize, context->isBigEndian);
+		for (i = 0; i < tableSize / 8; i++) {
+			subjectResourceId = readS2.readUint32();
+			patchResourceId = readS2.readUint32();
+			subjectResourceData = getResourceData(subjectContext, subjectResourceId);
+			resourceData = getResourceData(context, patchResourceId);
+			subjectResourceData->patchData = new PatchData(context->file);
+			subjectResourceData->offset = resourceData->offset;
+			subjectResourceData->size = resourceData->size;
+		}
+
+	}
+
+	//process external patch files
 	if (result) {
 		for (j = 0; j < _vm->getGameDescription()->patchsCount; j++) {
 			patchDescription = &_vm->getGameDescription()->patchDescriptions[j];
diff --git a/saga/rscfile.h b/saga/rscfile.h
index 63d8ef79f9..aff29a795c 100644
--- a/saga/rscfile.h
+++ b/saga/rscfile.h
@@ -36,18 +36,21 @@ namespace Saga {
 
 #define RSC_MIN_FILESIZE (RSC_TABLEINFO_SIZE + RSC_TABLEENTRY_SIZE + 1)
 
-//TODO: good PATCH.RE_ support
-
 struct PatchData {
+	bool _deletePatchFile;
 	Common::File *_patchFile;
 	GamePatchDescription *_patchDescription;
 	
-	PatchData(GamePatchDescription *patchDescription): _patchDescription(patchDescription) {
+	PatchData(GamePatchDescription *patchDescription): _patchDescription(patchDescription), _deletePatchFile(true) {
 		_patchFile = new Common::File();
 	}
+	PatchData(Common::File *patchFile): _patchDescription(NULL), _patchFile(patchFile), _deletePatchFile(false) {
+	}
 
 	~PatchData() {
-		delete _patchFile;
+		if (_deletePatchFile) {
+			delete _patchFile;
+		}
 	}
 };
 
@@ -55,6 +58,15 @@ struct ResourceData {
 	size_t offset;
 	size_t size;
 	PatchData *patchData;
+	void fillSoundPatch(const GameSoundInfo *&soundInfo) {
+		if (patchData != NULL) {
+			if (patchData->_patchDescription != NULL) {
+				if (patchData->_patchDescription->soundInfo != NULL) {
+					soundInfo = patchData->_patchDescription->soundInfo;
+				}
+			}
+		}
+	}
 };
 
 struct ResourceContext {
diff --git a/saga/sndres.cpp b/saga/sndres.cpp
index 1cb7815571..7d228628ca 100644
--- a/saga/sndres.cpp
+++ b/saga/sndres.cpp
@@ -116,11 +116,8 @@ bool SndRes::load(ResourceContext *context, uint32 resourceId, SoundBuffer &buff
 	} else {
 		soundInfo = _vm->getSfxInfo();
 	}
-	if (context->table[resourceId].patchData != NULL) {
-		if (context->table[resourceId].patchData->_patchDescription->soundInfo != NULL) {
-			soundInfo = context->table[resourceId].patchData->_patchDescription->soundInfo;
-		}
-	}
+	
+	context->table[resourceId].fillSoundPatch(soundInfo);
 
 	MemoryReadStream readS(soundResource, soundResourceLength);