From 2f23eb99ee75db397593fc0dc8f389fc1f3316ce Mon Sep 17 00:00:00 2001
From: Filippos Karapetis
Date: Sun, 3 Jan 2010 15:08:26 +0000
Subject: The "room" command can now set the current room number, too (more
 straightforward than changing global var 13)

svn-id: r46925
---
 engines/sci/console.cpp      | 15 +++++++++++++--
 engines/sci/engine/state.cpp |  4 ++++
 engines/sci/engine/state.h   |  1 +
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/engines/sci/console.cpp b/engines/sci/console.cpp
index 0e71131f0d..fcb0ab5340 100644
--- a/engines/sci/console.cpp
+++ b/engines/sci/console.cpp
@@ -327,7 +327,7 @@ bool Console::cmdHelp(int argc, const char **argv) {
 	DebugPrintf(" list_saves - List all saved games including filenames\n");
 	DebugPrintf(" restart_game - Restarts the game\n");
 	DebugPrintf(" version - Shows the resource and interpreter versions\n");
-	DebugPrintf(" room - Shows the current room number\n");
+	DebugPrintf(" room - Gets or sets the current room number\n");
 	DebugPrintf(" exit - Exits the game\n");
 	DebugPrintf("\n");
 	DebugPrintf("Screen:\n");
@@ -630,7 +630,18 @@ bool Console::cmdDissectScript(int argc, const char **argv) {
 }
 
 bool Console::cmdRoomNumber(int argc, const char **argv) {
-	DebugPrintf("Current room number is %d\n", _vm->_gamestate->currentRoomNumber());
+	// The room number is stored in global var 13
+	// The same functionality is provided by "vmvars g 13" (but this one is more straighforward)
+
+	if (argc != 2) {
+		DebugPrintf("Current room number is %d\n", _vm->_gamestate->currentRoomNumber());
+		DebugPrintf("Calling this command with the room number (in decimal or hexadecimal) changes the room\n");
+	} else {
+		Common::String roomNumberStr = argv[1];
+		int roomNumber = strtol(roomNumberStr.c_str(), NULL, roomNumberStr.hasSuffix("h") ? 16 : 10);
+		_vm->getEngineState()->setRoomNumber(roomNumber);
+		DebugPrintf("Room number changed to %d (%x in hex)\n", roomNumber, roomNumber);
+	}
 
 	return true;
 }
diff --git a/engines/sci/engine/state.cpp b/engines/sci/engine/state.cpp
index a6b924b4a8..167fab5de9 100644
--- a/engines/sci/engine/state.cpp
+++ b/engines/sci/engine/state.cpp
@@ -120,6 +120,10 @@ uint16 EngineState::currentRoomNumber() const {
 	return script_000->_localsBlock->_locals[13].toUint16();
 }
 
+void EngineState::setRoomNumber(uint16 roomNumber) {
+	script_000->_localsBlock->_locals[13] = make_reg(0, roomNumber);
+}
+
 kLanguage EngineState::charToLanguage(const char c) const {
 	switch (c) {
 	case 'F':
diff --git a/engines/sci/engine/state.h b/engines/sci/engine/state.h
index 54fb14c24e..ddfebddf19 100644
--- a/engines/sci/engine/state.h
+++ b/engines/sci/engine/state.h
@@ -226,6 +226,7 @@ public:
 	Script *script_000;  /**< script 000, e.g. for globals */
 
 	uint16 currentRoomNumber() const;
+	void setRoomNumber(uint16 roomNumber);
 
 	/**
 	 * Processes a multilanguage string based on the current language settings and
-- 
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