ADL: Implement hires6 action opcode 0x12

4 files changed, 33 insertions, 9 deletions

diff --git a/engines/adl/adl_v4.cpp b/engines/adl/adl_v4.cpp
index a5d2de264d..494ff52ce4 100644
--- a/engines/adl/adl_v4.cpp
+++ b/engines/adl/adl_v4.cpp
@@ -238,6 +238,11 @@ void AdlEngine_v4::loadRegionInitDataOffsets(Common::ReadStream &stream, uint re
 	}
 }
 
+void AdlEngine_v4::initRoomState(RoomState &roomState) const {
+	roomState.picture = 1;
+	roomState.isFirstTime = 1;
+}
+
 void AdlEngine_v4::initRegions(const byte *roomsPerRegion, uint regions) {
 	_state.regions.resize(regions);
 
@@ -247,12 +252,8 @@ void AdlEngine_v4::initRegions(const byte *roomsPerRegion, uint regions) {
 		regn.vars.resize(24);
 
 		regn.rooms.resize(roomsPerRegion[r]);
-		for (uint rm = 0; rm < roomsPerRegion[r]; ++rm) {
-			// TODO: hires6 uses 0xff and has slightly different
-			// code working on these values
-			regn.rooms[rm].picture = 1;
-			regn.rooms[rm].isFirstTime = 1;
-		}
+		for (uint rm = 0; rm < roomsPerRegion[r]; ++rm)
+			initRoomState(regn.rooms[rm]);
 	}
 }
 
diff --git a/engines/adl/adl_v4.h b/engines/adl/adl_v4.h
index 08cea21181..cca1c6fa98 100644
--- a/engines/adl/adl_v4.h
+++ b/engines/adl/adl_v4.h
@@ -81,7 +81,8 @@ protected:
 	void loadRegion(byte region);
 	void loadItemPicIndex(Common::ReadStream &stream, uint items);
 	void backupRoomState(byte room);
-	void restoreRoomState(byte room);
+	virtual void initRoomState(RoomState &roomState) const;
+	virtual void restoreRoomState(byte room);
 	void backupVars();
 	void restoreVars();
 
diff --git a/engines/adl/adl_v5.cpp b/engines/adl/adl_v5.cpp
index 011ef88848..31d0033dea 100644
--- a/engines/adl/adl_v5.cpp
+++ b/engines/adl/adl_v5.cpp
@@ -33,6 +33,22 @@ AdlEngine_v5::AdlEngine_v5(OSystem *syst, const AdlGameDescription *gd) :
 		AdlEngine_v4(syst, gd) {
 }
 
+void AdlEngine_v5::initRoomState(RoomState &roomState) const {
+	roomState.picture = 0xff;
+	roomState.isFirstTime = 0xff;
+}
+
+void AdlEngine_v5::restoreRoomState(byte room) {
+	const RoomState &backup = getCurRegion().rooms[room - 1];
+
+	if (backup.isFirstTime != 0xff) {
+		getRoom(room).curPicture = getRoom(room).picture = backup.picture;
+
+		if (backup.isFirstTime != 1)
+			getRoom(room).isFirstTime = false;
+	}
+}
+
 AdlEngine_v5::RegionChunkType AdlEngine_v5::getRegionChunkType(const uint16 addr) const {
 	switch (addr) {
 	case 0x7b00:
@@ -181,8 +197,12 @@ int AdlEngine_v5::o5_setTextMode(ScriptEnv &e) {
 int AdlEngine_v5::o5_setRegionRoom(ScriptEnv &e) {
 	OP_DEBUG_2("\tSET_REGION_ROOM(%d, %d)", e.arg(1), e.arg(2));
 
-	// TODO
-	return 2;
+	getCurRoom().curPicture = getCurRoom().picture;
+	getCurRoom().isFirstTime = false;
+	switchRegion(e.arg(1));
+	_state.room = e.arg(2);
+	restoreRoomState(_state.room);
+	return -1;
 }
 
 int AdlEngine_v5::o_winGame(ScriptEnv &e) {
diff --git a/engines/adl/adl_v5.h b/engines/adl/adl_v5.h
index 7836ec6b04..0c5837f26c 100644
--- a/engines/adl/adl_v5.h
+++ b/engines/adl/adl_v5.h
@@ -39,6 +39,8 @@ protected:
 
 	// AdlEngine_v4
 	virtual RegionChunkType getRegionChunkType(const uint16 addr) const;
+	virtual void initRoomState(RoomState &roomState) const;
+	virtual void restoreRoomState(byte room);
 
 	int o5_isNounNotInRoom(ScriptEnv &e);
 	int o5_abortScript(ScriptEnv &e);