(svn r5907) Remove more indirection by using pointers instead of IDs. Also fix some bogus warnings on MSVC by using (void*) casts

7 files changed, 51 insertions, 53 deletions

diff --git a/industry.h b/industry.h
index bb7bb498b..0189a6d84 100644
--- a/industry.h
+++ b/industry.h
@@ -96,7 +96,7 @@ static inline uint16 GetIndustryPoolSize(void)
 
 VARDEF int _total_industries; // For the AI: the amount of industries active
 
-VARDEF uint16 *_industry_sort;
+VARDEF const Industry** _industry_sort;
 VARDEF bool _industry_sort_dirty;
 
 
diff --git a/industry_gui.c b/industry_gui.c
index cec302b55..658704bf3 100644
--- a/industry_gui.c
+++ b/industry_gui.c
@@ -470,16 +470,15 @@ static const Widget _industry_directory_widgets[] = {
 static uint _num_industry_sort;
 
 static char _bufcache[96];
-static uint16 _last_industry_idx;
+static const Industry* _last_industry;
 
 static byte _industry_sort_order;
 
 static int CDECL GeneralIndustrySorter(const void *a, const void *b)
 {
+	const Industry* i = *(const Industry**)a;
+	const Industry* j = *(const Industry**)b;
 	char buf1[96];
-	uint16 val;
-	Industry *i = GetIndustry(*(const uint16*)a);
-	Industry *j = GetIndustry(*(const uint16*)b);
 	int r = 0;
 
 	switch (_industry_sort_order >> 1) {
@@ -523,8 +522,8 @@ static int CDECL GeneralIndustrySorter(const void *a, const void *b)
 		SetDParam(0, i->town->index);
 		GetString(buf1, STR_TOWN);
 
-		if ( (val=*(const uint16*)b) != _last_industry_idx) {
-			_last_industry_idx = val;
+		if (j != _last_industry) {
+			_last_industry = j;
 			SetDParam(0, j->town->index);
 			GetString(_bufcache, STR_TOWN);
 		}
@@ -537,21 +536,21 @@ static int CDECL GeneralIndustrySorter(const void *a, const void *b)
 
 static void MakeSortedIndustryList(void)
 {
-	Industry *i;
+	const Industry* i;
 	int n = 0;
 
 	/* Create array for sorting */
-	_industry_sort = realloc(_industry_sort, GetIndustryPoolSize() * sizeof(_industry_sort[0]));
+	_industry_sort = realloc((void*)_industry_sort, GetIndustryPoolSize() * sizeof(_industry_sort[0]));
 	if (_industry_sort == NULL)
 		error("Could not allocate memory for the industry-sorting-list");
 
 	FOR_ALL_INDUSTRIES(i) {
-		if (i->xy != 0) _industry_sort[n++] = i->index;
+		if (i->xy != 0) _industry_sort[n++] = i;
 	}
 	_num_industry_sort = n;
-	_last_industry_idx = 0xFFFF; // used for "cache"
+	_last_industry = NULL; // used for "cache"
 
-	qsort(_industry_sort, n, sizeof(_industry_sort[0]), GeneralIndustrySorter);
+	qsort((void*)_industry_sort, n, sizeof(_industry_sort[0]), GeneralIndustrySorter);
 
 	DEBUG(misc, 1) ("Resorting Industries list...");
 }
@@ -579,7 +578,7 @@ static void IndustryDirectoryWndProc(Window *w, WindowEvent *e)
 		n = 0;
 
 		while (p < _num_industry_sort) {
-			const Industry *i = GetIndustry(_industry_sort[p]);
+			const Industry* i = _industry_sort[p];
 
 			SetDParam(0, i->index);
 			if (i->produced_cargo[0] != CT_INVALID) {
@@ -637,7 +636,7 @@ static void IndustryDirectoryWndProc(Window *w, WindowEvent *e)
 			if (!IS_INT_INSIDE(y, 0, w->vscroll.cap)) return;
 			p = y + w->vscroll.pos;
 			if (p < _num_industry_sort) {
-				ScrollMainWindowToTile(GetIndustry(_industry_sort[p])->xy);
+				ScrollMainWindowToTile(_industry_sort[p]->xy);
 			}
 		} break;
 		}
diff --git a/openttd.c b/openttd.c
index 0433c9c9c..062645677 100644
--- a/openttd.c
+++ b/openttd.c
@@ -260,8 +260,8 @@ static void UnInitializeDynamicVariables(void)
 	CleanPool(&_sign_pool);
 	CleanPool(&_order_pool);
 
-	free(_town_sort);
-	free(_industry_sort);
+	free((void*)_town_sort);
+	free((void*)_industry_sort);
 }
 
 static void UnInitializeGame(void)
diff --git a/station_gui.c b/station_gui.c
index 651eafa76..ab106fbc2 100644
--- a/station_gui.c
+++ b/station_gui.c
@@ -69,7 +69,7 @@ const StringID _station_sort_listing[] = {
 };
 
 static char _bufcache[64];
-static uint16 _last_station_idx;
+static const Station* _last_station;
 static int _internal_sort_order;
 
 static int CDECL StationNameSorter(const void *a, const void *b)
@@ -83,8 +83,8 @@ static int CDECL StationNameSorter(const void *a, const void *b)
 	argv[0] = st1->index;
 	GetStringWithArgs(buf1, STR_STATION, argv);
 
-	if (st2->index != _last_station_idx) {
-		_last_station_idx = st2->index;
+	if (st2 != _last_station) {
+		_last_station = st2;
 		argv[0] = st2->index;
 		GetStringWithArgs(_bufcache, STR_STATION, argv);
 	}
@@ -207,7 +207,7 @@ static void BuildStationsList(plstations_d* sl, PlayerID owner, byte facilities,
 		}
 	}
 
-	free(sl->sort_list);
+	free((void*)sl->sort_list);
 	sl->sort_list = malloc(n * sizeof(sl->sort_list[0]));
 	if (n != 0 && sl->sort_list == NULL) error("Could not allocate memory for the station-sorting-list");
 	sl->list_length = n;
@@ -216,7 +216,7 @@ static void BuildStationsList(plstations_d* sl, PlayerID owner, byte facilities,
 
 	sl->flags &= ~SL_REBUILD;
 	sl->flags |= SL_RESORT;
-	free(station_sort);
+	free((void*)station_sort);
 }
 
 static void SortStationsList(plstations_d *sl)
@@ -231,7 +231,7 @@ static void SortStationsList(plstations_d *sl)
 	if (!(sl->flags & SL_RESORT)) return;
 
 	_internal_sort_order = sl->flags & SL_ORDER;
-	_last_station_idx = 0; // used for "cache" in namesorting
+	_last_station = NULL; // used for "cache" in namesorting
 	qsort(sl->sort_list, sl->list_length, sizeof(sl->sort_list[0]), _station_sorter[sl->sort_type]);
 
 	sl->resort_timer = DAY_TICKS * PERIODIC_RESORT_DAYS;
diff --git a/town.h b/town.h
index 4729cccc8..9664ca2ed 100644
--- a/town.h
+++ b/town.h
@@ -151,7 +151,7 @@ enum {
 
 bool CheckforTownRating(uint32 flags, Town *t, byte type);
 
-VARDEF TownID *_town_sort;
+VARDEF const Town** _town_sort;
 
 extern MemoryPool _town_pool;
 
diff --git a/town_gui.c b/town_gui.c
index 8fe0dc1ab..bd289b6a7 100644
--- a/town_gui.c
+++ b/town_gui.c
@@ -368,25 +368,25 @@ static const Widget _town_directory_widgets[] = {
 static uint _num_town_sort;
 
 static char _bufcache[64];
-static uint16 _last_town_idx;
+static const Town* _last_town;
 
 static int CDECL TownNameSorter(const void *a, const void *b)
 {
+	const Town* ta = *(const Town**)a;
+	const Town* tb = *(const Town**)b;
 	char buf1[64];
-	uint16 val;
 	int r;
 	int32 argv[1];
 
-	argv[0] = *(const uint16*)a;
+	argv[0] = ta->index;
 	GetStringWithArgs(buf1, STR_TOWN, argv);
 
 	/* If 'b' is the same town as in the last round, use the cached value
 	 *  We do this to speed stuff up ('b' is called with the same value a lot of
-	*  times after eachother) */
-	val = *(const uint16*)b;
-	if (val != _last_town_idx) {
-		_last_town_idx = val;
-		argv[0] = val;
+	 *  times after eachother) */
+	if (tb != _last_town) {
+		_last_town = tb;
+		argv[0] = tb->index;
 		GetStringWithArgs(_bufcache, STR_TOWN, argv);
 	}
 
@@ -397,8 +397,8 @@ static int CDECL TownNameSorter(const void *a, const void *b)
 
 static int CDECL TownPopSorter(const void *a, const void *b)
 {
-	const Town *ta = GetTown(*(const uint16*)a);
-	const Town *tb = GetTown(*(const uint16*)b);
+	const Town* ta = *(const Town**)a;
+	const Town* tb = *(const Town**)b;
 	int r = ta->population - tb->population;
 	if (_town_sort_order & 1) r = -r;
 	return r;
@@ -410,18 +410,18 @@ static void MakeSortedTownList(void)
 	uint n = 0;
 
 	/* Create array for sorting */
-	_town_sort = realloc(_town_sort, GetTownPoolSize() * sizeof(_town_sort[0]));
+	_town_sort = realloc((void*)_town_sort, GetTownPoolSize() * sizeof(_town_sort[0]));
 	if (_town_sort == NULL)
 		error("Could not allocate memory for the town-sorting-list");
 
 	FOR_ALL_TOWNS(t) {
-		if (t->xy != 0) _town_sort[n++] = t->index;
+		if (t->xy != 0) _town_sort[n++] = t;
 	}
 
 	_num_town_sort = n;
 
-	_last_town_idx = 0; // used for "cache"
-	qsort(_town_sort, n, sizeof(_town_sort[0]), _town_sort_order & 2 ? TownPopSorter : TownNameSorter);
+	_last_town = NULL; // used for "cache"
+	qsort((void*)_town_sort, n, sizeof(_town_sort[0]), _town_sort_order & 2 ? TownPopSorter : TownNameSorter);
 
 	DEBUG(misc, 1) ("Resorting Towns list...");
 }
@@ -442,13 +442,12 @@ static void TownDirectoryWndProc(Window *w, WindowEvent *e)
 		DoDrawString(_town_sort_order & 1 ? DOWNARROW : UPARROW, (_town_sort_order <= 1) ? 88 : 187, 15, 0x10);
 
 		{
-			const Town *t;
 			int n = 0;
 			uint16 i = w->vscroll.pos;
 			int y = 28;
 
 			while (i < _num_town_sort) {
-				t = GetTown(_town_sort[i]);
+				const Town* t = _town_sort[i];
 
 				assert(t->xy);
 
@@ -480,6 +479,8 @@ static void TownDirectoryWndProc(Window *w, WindowEvent *e)
 		} break;
 
 		case 5: { /* Click on Town Matrix */
+			const Town* t;
+
 			uint16 id_v = (e->click.pt.y - 28) / 10;
 
 			if (id_v >= w->vscroll.cap) return; // click out of bounds
@@ -488,13 +489,11 @@ static void TownDirectoryWndProc(Window *w, WindowEvent *e)
 
 			if (id_v >= _num_town_sort) return; // click out of town bounds
 
-			{
-				const Town *t = GetTown(_town_sort[id_v]);
-				assert(t->xy);
-
-				ScrollMainWindowToTile(t->xy);
-			}
-		}	break;
+			t = _town_sort[id_v];
+			assert(t->xy);
+			ScrollMainWindowToTile(t->xy);
+			break;
+		}
 		}
 		break;
 
diff --git a/vehicle_gui.c b/vehicle_gui.c
index 4baf7f834..bfe1adb62 100644
--- a/vehicle_gui.c
+++ b/vehicle_gui.c
@@ -27,7 +27,7 @@
 Sorting _sorting;
 
 static uint32 _internal_name_sorter_id; // internal StringID for default vehicle-names
-static uint32 _last_vehicle_idx;        // cached index to hopefully speed up name-sorting
+static const Vehicle* _last_vehicle; // cached vehicle to hopefully speed up name-sorting
 static bool   _internal_sort_order;     // descending/ascending
 
 static uint16 _player_num_engines[TOTAL_NUM_ENGINES];
@@ -161,7 +161,7 @@ void BuildVehicleList(vehiclelist_d* vl, int type, PlayerID owner, StationID sta
 		}
 	}
 
-	free(vl->sort_list);
+	free((void*)vl->sort_list);
 	vl->sort_list = malloc(n * sizeof(vl->sort_list[0]));
 	if (n != 0 && vl->sort_list == NULL) {
 		error("Could not allocate memory for the vehicle-sorting-list");
@@ -169,7 +169,7 @@ void BuildVehicleList(vehiclelist_d* vl, int type, PlayerID owner, StationID sta
 	vl->list_length = n;
 
 	for (i = 0; i < n; ++i) vl->sort_list[i] = sort_list[i];
-	free(sort_list);
+	free((void*)sort_list);
 
 	vl->flags &= ~VL_REBUILD;
 	vl->flags |= VL_RESORT;
@@ -181,7 +181,7 @@ void SortVehicleList(vehiclelist_d *vl)
 
 	_internal_sort_order = vl->flags & VL_DESC;
 	_internal_name_sorter_id = STR_SV_TRAIN_NAME;
-	_last_vehicle_idx = 0; // used for "cache" in namesorting
+	_last_vehicle = NULL; // used for "cache" in namesorting
 	qsort(vl->sort_list, vl->list_length, sizeof(vl->sort_list[0]),
 		_vehicle_sorter[vl->sort_type]);
 
@@ -289,7 +289,7 @@ static int CDECL VehicleNumberSorter(const void *a, const void *b)
 	return (_internal_sort_order & 1) ? -r : r;
 }
 
-static char _bufcache[64];	// used together with _last_vehicle_idx to hopefully speed up stringsorting
+static char _bufcache[64]; // used together with _last_vehicle to hopefully speed up stringsorting
 static int CDECL VehicleNameSorter(const void *a, const void *b)
 {
 	const Vehicle* va = *(const Vehicle**)a;
@@ -302,8 +302,8 @@ static int CDECL VehicleNameSorter(const void *a, const void *b)
 		GetString(buf1, STR_JUST_STRING);
 	}
 
-	if (vb->index != _last_vehicle_idx) {
-		_last_vehicle_idx = vb->index;
+	if (vb != _last_vehicle) {
+		_last_vehicle = vb;
 		_bufcache[0] = '\0';
 		if (vb->string_id != _internal_name_sorter_id) {
 			SetDParam(0, vb->string_id);