From 73ff939ddbb4772178de68f821d9c32ded846a06 Mon Sep 17 00:00:00 2001
From: maedhros <maedhros@openttd.org>
Date: Mon, 19 Mar 2007 11:27:30 +0000
Subject: (svn r9315) -Merge: The newhouses branch. With this merge comes
 almost complete support for the newhouses grf specs, so all newhouses grfs
 will be playable in the game.

Many thanks to everyone who contributed code and ideas, and all the testers
who found things we missed.
---
 src/openttd.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

(limited to 'src/openttd.cpp')

diff --git a/src/openttd.cpp b/src/openttd.cpp
index 57e99a71a..88a460429 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -56,6 +56,7 @@
 #include "clear_map.h"
 #include "fontcache.h"
 #include "newgrf_config.h"
+#include "newgrf_house.h"
 #include "player_face.h"
 
 #include "bridge_map.h"
@@ -677,6 +678,7 @@ static void MakeNewGame(bool from_heightmap)
 	_game_mode = GM_NORMAL;
 
 	ResetGRFConfig(true);
+	ResetHouseIDMapping();
 
 	GenerateWorldSetCallback(&MakeNewGameDone);
 	GenerateWorld(from_heightmap ? GW_HEIGHTMAP : GW_NEWGAME, 1 << _patches.map_x, 1 << _patches.map_y);
@@ -1756,6 +1758,47 @@ bool AfterLoadGame()
 	/* do the same as when elrails were enabled/disabled manually just now */
 	SettingsDisableElrail(_patches.disable_elrails);
 
+	/* From version 52, the map array was changed for house tiles to allow
+	 * space for newhouses grf features. A new byte, m7, was also added. */
+	if (CheckSavegameVersion(52)) {
+		for (TileIndex t = 0; t < map_size; t++) {
+			_me[t].m7 = 0;
+
+			if (IsTileType(t, MP_HOUSE)) {
+				if (GB(_m[t].m3, 6, 2) != TOWN_HOUSE_COMPLETED) {
+					/* Move the construction stage from m3[7..6] to m5[5..4].
+					 * The construction counter does not have to move. */
+					SB(_m[t].m5, 3, 2, GB(_m[t].m3, 6, 2));
+					SB(_m[t].m3, 6, 2, 0);
+
+					/* The "house is completed" bit is now in m6[2]. */
+					SetHouseCompleted(t, false);
+				} else {
+					/* The "lift has destination" bit has been moved from
+					 * m5[7] to m7[0]. */
+					SB(_me[t].m7, 0, 1, HASBIT(_m[t].m5, 7));
+					CLRBIT(_m[t].m5, 7);
+
+					/* The "lift is moving" bit has been removed, as it does
+					 * the same job as the "lift has destination" bit. */
+					CLRBIT(_m[t].m1, 7);
+
+					/* The position of the lift goes from m1[7..0] to m6[7..2],
+					 * making m1 totally free, now. The lift position does not
+					 * have to be a full byte since the maximum value is 36. */
+					SetLiftPosition(t, GB(_m[t].m1, 0, 6 ));
+
+					_m[t].m1 = 0;
+					_m[t].m3 = 0;
+					SetHouseCompleted(t, true);
+				}
+			}
+		}
+	}
+
+	/* Count the buildings after updating the map array. */
+	AfterLoadCountBuildings();
+
 	if (CheckSavegameVersion(43)) {
 		for (TileIndex t = 0; t < map_size; t++) {
 			if (IsTileType(t, MP_INDUSTRY)) {
@@ -1886,6 +1929,8 @@ void ReloadNewGRFData()
 	/* update station and waypoint graphics */
 	AfterLoadWaypoints();
 	AfterLoadStations();
+	/* check that house ids are still valid */
+	CheckHouseIDs();
 	/* redraw the whole screen */
 	MarkWholeScreenDirty();
 }
-- 
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