From c9cab7ba1967a42b90b44bca865db33c66a20c72 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Fri, 17 Jul 2009 20:40:29 +0000
Subject: [PATCH] (svn r16862) -Codechange: make waypoints use the same system
 of station station spec lists.

---
 src/rail_cmd.cpp             |  6 ++++--
 src/saveload/waypoint_sl.cpp | 28 ++++++++++++++++++++--------
 src/waypoint.cpp             | 15 +++++++++------
 src/waypoint.h               |  3 ++-
 4 files changed, 35 insertions(+), 17 deletions(-)

diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
index 42e3a6d786..a67b553b1d 100644
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -1938,9 +1938,11 @@ static void DrawTile_Track(TileInfo *ti)
 			}
 		} else {
 			/* look for customization */
-			const StationSpec *statspec = GetWaypointByTile(ti->tile)->spec.spec;
+			const Waypoint *wp = GetWaypointByTile(ti->tile);
+
+			if (wp->num_specs != 0) {
+				const StationSpec *statspec = wp->speclist->spec;
 
-			if (statspec != NULL) {
 				/* emulate station tile - open with building */
 				const Station *st = ComposeWaypointStation(ti->tile);
 				uint gfx = 2;
diff --git a/src/saveload/waypoint_sl.cpp b/src/saveload/waypoint_sl.cpp
index f51a094850..75c687c803 100644
--- a/src/saveload/waypoint_sl.cpp
+++ b/src/saveload/waypoint_sl.cpp
@@ -21,14 +21,12 @@ void AfterLoadWaypoints()
 	Waypoint *wp;
 
 	FOR_ALL_WAYPOINTS(wp) {
-		uint i;
+		if (wp->num_specs == 0) continue;
 
-		if (wp->spec.grfid == 0) continue;
-
-		for (i = 0; i < GetNumCustomStations(STAT_CLASS_WAYP); i++) {
+		for (uint i = 0; i < GetNumCustomStations(STAT_CLASS_WAYP); i++) {
 			const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, i);
-			if (statspec != NULL && statspec->grffile->grfid == wp->spec.grfid && statspec->localidx == wp->spec.localidx) {
-				wp->spec.spec = statspec;
+			if (statspec != NULL && statspec->grffile->grfid == wp->speclist->grfid && statspec->localidx == wp->speclist->localidx) {
+				wp->speclist->spec = statspec;
 				break;
 			}
 		}
@@ -37,6 +35,7 @@ void AfterLoadWaypoints()
 
 static uint16 _waypoint_town_index;
 static StringID _waypoint_string_id;
+static StationSpecList _waypoint_spec;
 
 static const SaveLoad _waypoint_desc[] = {
 	 SLE_CONDVAR(Waypoint, xy,            SLE_FILE_U16 | SLE_VAR_U32,  0, 5),
@@ -51,8 +50,8 @@ static const SaveLoad _waypoint_desc[] = {
 
 	 SLE_CONDVAR(Waypoint, build_date,    SLE_FILE_U16 | SLE_VAR_I32,  3, 30),
 	 SLE_CONDVAR(Waypoint, build_date,    SLE_INT32,                  31, SL_MAX_VERSION),
-	 SLE_CONDVAR(Waypoint, spec.localidx, SLE_UINT8,                   3, SL_MAX_VERSION),
-	 SLE_CONDVAR(Waypoint, spec.grfid,    SLE_UINT32,                 17, SL_MAX_VERSION),
+	SLEG_CONDVAR(_waypoint_spec.localidx, SLE_UINT8,                   3, SL_MAX_VERSION),
+	SLEG_CONDVAR(_waypoint_spec.grfid,    SLE_UINT32,                 17, SL_MAX_VERSION),
 	 SLE_CONDVAR(Waypoint, owner,         SLE_UINT8,                 101, SL_MAX_VERSION),
 
 	SLE_END()
@@ -63,6 +62,12 @@ static void Save_WAYP()
 	Waypoint *wp;
 
 	FOR_ALL_WAYPOINTS(wp) {
+		if (wp->num_specs == 0) {
+			_waypoint_spec.grfid = 0;
+		} else {
+			_waypoint_spec = *wp->speclist;
+		}
+
 		SlSetArrayIndex(wp->index);
 		SlObject(wp, _waypoint_desc);
 	}
@@ -75,10 +80,17 @@ static void Load_WAYP()
 	while ((index = SlIterateArray()) != -1) {
 		_waypoint_string_id = 0;
 		_waypoint_town_index = 0;
+		_waypoint_spec.grfid = 0;
 
 		Waypoint *wp = new (index) Waypoint();
 		SlObject(wp, _waypoint_desc);
 
+		if (_waypoint_spec.grfid != 0) {
+			wp->num_specs = 1;
+			wp->speclist = MallocT<StationSpecList>(1);
+			*wp->speclist = _waypoint_spec;
+		}
+
 		if (CheckSavegameVersion(84)) wp->name = (char *)(size_t)_waypoint_string_id;
 		if (CheckSavegameVersion(122)) wp->town = (Town *)(size_t)_waypoint_town_index;
 	}
diff --git a/src/waypoint.cpp b/src/waypoint.cpp
index 015ca8941e..791822eda1 100644
--- a/src/waypoint.cpp
+++ b/src/waypoint.cpp
@@ -97,16 +97,19 @@ Waypoint::~Waypoint()
  */
 void Waypoint::AssignStationSpec(uint index)
 {
+	free(this->speclist);
+
 	const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, index);
 
 	if (statspec != NULL) {
-		this->spec.spec = statspec;
-		this->spec.grfid = statspec->grffile->grfid;
-		this->spec.localidx = statspec->localidx;
+		this->speclist = MallocT<StationSpecList>(1);
+		this->speclist->spec = statspec;
+		this->speclist->grfid = statspec->grffile->grfid;
+		this->speclist->localidx = statspec->localidx;
+		this->num_specs = 1;
 	} else {
-		this->spec.spec = NULL;
-		this->spec.grfid = 0;
-		this->spec.localidx = 0;
+		this->speclist = NULL;
+		this->num_specs = 0;
 	}
 }
 
diff --git a/src/waypoint.h b/src/waypoint.h
index 6e3e241053..7e540ecc27 100644
--- a/src/waypoint.h
+++ b/src/waypoint.h
@@ -28,7 +28,8 @@ struct Waypoint : WaypointPool::PoolItem<&_waypoint_pool> {
 	Date build_date;   ///< Date of construction
 	OwnerByte owner;   ///< Whom this waypoint belongs to
 
-	StationSpecList spec; ///< NewGRF specification of the station
+	uint8 num_specs;           ///< NOSAVE: Number of specs in the speclist
+	StationSpecList *speclist; ///< List of station specs of this station
 
 	byte delete_ctr;   ///< Delete counter. If greater than 0 then it is decremented until it reaches 0; the waypoint is then is deleted.