From 30b6a479e5b1510cb5157c72decdb24aa4c24ed1 Mon Sep 17 00:00:00 2001
From: Rodrigo Rebello
Date: Sun, 2 Nov 2014 15:07:09 -0200
Subject: SCUMM: Fix bug #6679 - INDY3 DOS-EGA: book of maps graphic glitch

Force correct width value for room 64 (book of maps) in Indy3. This
works around the wrong value stored in the data files of a specific
version of the game (DOS/EGA v1.0, according to scumm-md5.txt).
---
 engines/scumm/room.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'engines/scumm')

diff --git a/engines/scumm/room.cpp b/engines/scumm/room.cpp
index 3828629997..4b59e22408 100644
--- a/engines/scumm/room.cpp
+++ b/engines/scumm/room.cpp
@@ -614,6 +614,15 @@ void ScummEngine_v3old::setupRoomSubBlocks() {
 		}
 	} else {
 		_roomWidth = READ_LE_UINT16(&(rmhd->old.width));
+
+		// WORKAROUND: Fix bad width value for room 64 (book of maps) in
+		// Indy3. A specific version of this game (DOS/EGA v1.0, according to
+		// scumm-md5.txt) has a wrong width of 1793 stored in the data files,
+		// which causes a strange situation in which the book view may scroll
+		// towards the right depending on Indy's position from the previous room.
+		// Fixes bug #6679.
+		if (_game.id == GID_INDY3 && _roomResource == 64 && _roomWidth == 1793)
+			_roomWidth = 320;
 		_roomHeight = READ_LE_UINT16(&(rmhd->old.height));
 	}
 	_numObjectsInRoom = roomptr[20];
-- 
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