(svn r11680) -Codechange: refactor more out of openttd.h and functions.h.

56 files changed, 268 insertions, 204 deletions

diff --git a/src/ai/default/default.cpp b/src/ai/default/default.cpp
index 1b18f27e4..93f1309dc 100644
--- a/src/ai/default/default.cpp
+++ b/src/ai/default/default.cpp
@@ -4,7 +4,7 @@
 #include "../../openttd.h"
 #include "../../aircraft.h"
 #include "../../bridge_map.h"
-#include "../../functions.h"
+#include "../../tile_cmd.h"
 #include "../../landscape.h"
 #include "../../map.h"
 #include "../../rail_map.h"
diff --git a/src/bridge.h b/src/bridge.h
index 6565f983f..bd85356d6 100644
--- a/src/bridge.h
+++ b/src/bridge.h
@@ -37,4 +37,8 @@ static inline const Bridge *GetBridge(uint i)
 
 void DrawBridgeMiddle(const TileInfo *ti);
 
+bool CheckBridge_Stuff(byte bridge_type, uint bridge_len);
+uint32 GetBridgeLength(TileIndex begin, TileIndex end);
+int CalcBridgeLenCostFactor(int x);
+
 #endif /* BRIDGE_H */
diff --git a/src/cargo_type.h b/src/cargo_type.h
new file mode 100644
index 000000000..ca2f4a239
--- /dev/null
+++ b/src/cargo_type.h
@@ -0,0 +1,58 @@
+/* $Id$ */
+/** @file openttd.h */
+
+#ifndef CARGO_TYPE_H
+#define CARGO_TYPE_H
+
+typedef byte CargoID;
+
+enum {
+	// Temperate
+	CT_PASSENGERS   =  0,
+	CT_COAL         =  1,
+	CT_MAIL         =  2,
+	CT_OIL          =  3,
+	CT_LIVESTOCK    =  4,
+	CT_GOODS        =  5,
+	CT_GRAIN        =  6,
+	CT_WOOD         =  7,
+	CT_IRON_ORE     =  8,
+	CT_STEEL        =  9,
+	CT_VALUABLES    = 10,
+
+	// Arctic
+	CT_WHEAT        =  6,
+	CT_HILLY_UNUSED =  8,
+	CT_PAPER        =  9,
+	CT_GOLD         = 10,
+	CT_FOOD         = 11,
+
+	// Tropic
+	CT_RUBBER       =  1,
+	CT_FRUIT        =  4,
+	CT_MAIZE        =  6,
+	CT_COPPER_ORE   =  8,
+	CT_WATER        =  9,
+	CT_DIAMONDS     = 10,
+
+	// Toyland
+	CT_SUGAR        =  1,
+	CT_TOYS         =  3,
+	CT_BATTERIES    =  4,
+	CT_CANDY        =  5,
+	CT_TOFFEE       =  6,
+	CT_COLA         =  7,
+	CT_COTTON_CANDY =  8,
+	CT_BUBBLES      =  9,
+	CT_PLASTIC      = 10,
+	CT_FIZZY_DRINKS = 11,
+
+	NUM_CARGO       = 32,
+
+	CT_NO_REFIT     = 0xFE,
+	CT_INVALID      = 0xFF
+};
+
+typedef uint AcceptedCargo[NUM_CARGO];
+
+#endif /* OPENTTD_H */
diff --git a/src/cargopacket.h b/src/cargopacket.h
index 3fde1bacc..fe978667a 100644
--- a/src/cargopacket.h
+++ b/src/cargopacket.h
@@ -5,6 +5,7 @@
 #ifndef CARGOPACKET_H
 #define CARGOPACKET_H
 
+#include "economy_type.h"
 #include <list>
 
 typedef uint32 CargoPacketID;
diff --git a/src/cargotype.h b/src/cargotype.h
index 4c0702a6f..56a974add 100644
--- a/src/cargotype.h
+++ b/src/cargotype.h
@@ -5,6 +5,7 @@
 #ifndef CARGOTYPE_H
 #define CARGOTYPE_H
 
+#include "cargo_type.h"
 
 typedef uint32 CargoLabel;
 
diff --git a/src/clear_cmd.cpp b/src/clear_cmd.cpp
index 317b99a21..117cdd385 100644
--- a/src/clear_cmd.cpp
+++ b/src/clear_cmd.cpp
@@ -22,6 +22,7 @@
 #include "genworld.h"
 #include "industry.h"
 #include "water_map.h"
+#include "tile_cmd.h"
 
 /*
  * In one terraforming command all four corners of a initial tile can be raised/lowered (though this is not available to the player).
diff --git a/src/command_func.h b/src/command_func.h
index 80e069574..ccb9c2155 100644
--- a/src/command_func.h
+++ b/src/command_func.h
@@ -76,6 +76,7 @@ void NetworkSend_Command(TileIndex tile, uint32 p1, uint32 p2, uint32 cmd, Comma
  * used for user input data like names or chat messages.
  */
 extern const char *_cmd_text;
+extern Money _additional_cash_required;
 
 /**
  * Checks if a integer value belongs to a command.
diff --git a/src/disaster_cmd.cpp b/src/disaster_cmd.cpp
index d033b702e..2b14b4b89 100644
--- a/src/disaster_cmd.cpp
+++ b/src/disaster_cmd.cpp
@@ -18,14 +18,16 @@
 
 #include "stdafx.h"
 #include "openttd.h"
-#include "functions.h"
+#include "gfx.h"
 #include "landscape.h"
+
 #include "industry_map.h"
 #include "station_map.h"
 #include "table/strings.h"
 #include "map.h"
 #include "vehicle.h"
 #include "command_func.h"
+#include "tile_cmd.h"
 #include "news.h"
 #include "station.h"
 #include "waypoint.h"
diff --git a/src/dummy_land.cpp b/src/dummy_land.cpp
index fcfd2618d..fe605b90c 100644
--- a/src/dummy_land.cpp
+++ b/src/dummy_land.cpp
@@ -5,10 +5,10 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "table/strings.h"
-#include "functions.h"
-#include "viewport.h"
+#include "tile_cmd.h"
 #include "command_func.h"
 #include "table/sprites.h"
+#include "viewport.h"
 
 static void DrawTile_Dummy(TileInfo *ti)
 {
diff --git a/src/economy.cpp b/src/economy.cpp
index 7d0684611..80d56c72e 100644
--- a/src/economy.cpp
+++ b/src/economy.cpp
@@ -40,6 +40,7 @@
 #include "player_face.h"
 #include "group.h"
 #include "strings_func.h"
+#include "tile_cmd.h"
 
 /**
  * Multiply two integer values and shift the results to right.
@@ -92,6 +93,9 @@ Economy _economy;
 Subsidy _subsidies[MAX_PLAYERS];
 Prices _price;
 uint16 _price_frac[NUM_PRICES];
+Money  _cargo_payment_rates[NUM_CARGO];
+uint16 _cargo_payment_rates_frac[NUM_CARGO];
+Money _additional_cash_required;
 
 Money CalculateCompanyValue(const Player* p)
 {
diff --git a/src/economy_func.h b/src/economy_func.h
index 4a2520696..04d79ac8d 100644
--- a/src/economy_func.h
+++ b/src/economy_func.h
@@ -6,6 +6,8 @@
 #define ECONOMY_FUNC_H
 
 #include "economy_type.h"
+#include "cargo_type.h"
+#include "vehicle_type.h"
 
 struct Player;
 
@@ -19,6 +21,8 @@ extern Subsidy _subsidies[MAX_PLAYERS];
 /* Prices and also the fractional part. */
 extern Prices _price;
 extern uint16 _price_frac[NUM_PRICES];
+extern Money  _cargo_payment_rates[NUM_CARGO];
+extern uint16 _cargo_payment_rates_frac[NUM_CARGO];
 
 int UpdateCompanyRatingAndValue(Player *p, bool update);
 Pair SetupSubsidyDecodeParam(const Subsidy *s, bool mode);
diff --git a/src/economy_type.h b/src/economy_type.h
index d93a709a8..197fd7e82 100644
--- a/src/economy_type.h
+++ b/src/economy_type.h
@@ -7,6 +7,7 @@
 
 #include "core/overflowsafe_type.hpp"
 #include "core/enum_type.hpp"
+#include "cargo_type.h"
 
 typedef OverflowSafeInt64 Money;
 
diff --git a/src/engine.h b/src/engine.h
index 9ac4cd5b9..6ee3d8376 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -7,8 +7,10 @@
 
 #include "oldpool.h"
 #include "rail_type.h"
+#include "cargo_type.h"
+#include "vehicle_type.h"
+#include "command_type.h"
 #include "sound.h"
-#include "vehicle.h"
 
 enum RailVehicleTypes {
 	RAILVEH_SINGLEHEAD,  ///< indicates a "standalone" locomotive
diff --git a/src/functions.h b/src/functions.h
index e7ee6f26f..c7b758132 100644
--- a/src/functions.h
+++ b/src/functions.h
@@ -8,6 +8,7 @@
 #include "gfx.h"
 #include "viewport.h"
 #include "core/random_func.hpp"
+#include "command_type.h"
 
 void UpdateTownMaxPass(Town *t);
 
@@ -38,11 +39,6 @@ void DeleteAnimatedTile(TileIndex tile);
 void AnimateAnimatedTiles();
 void InitializeAnimatedTiles();
 
-/* tunnelbridge_cmd.cpp */
-bool CheckBridge_Stuff(byte bridge_type, uint bridge_len);
-uint32 GetBridgeLength(TileIndex begin, TileIndex end);
-int CalcBridgeLenCostFactor(int x);
-
 /* misc_cmd.cpp */
 void PlaceTreesRandomly();
 
diff --git a/src/gui.h b/src/gui.h
index e492a593f..db9e339a6 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -7,6 +7,7 @@
 
 #include "string.h"
 #include "window_type.h"
+#include "gfx.h"
 
 /* main_gui.cpp */
 void CcPlaySound10(bool success, TileIndex tile, uint32 p1, uint32 p2);
diff --git a/src/industry.h b/src/industry.h
index e633a4c86..46f14defc 100644
--- a/src/industry.h
+++ b/src/industry.h
@@ -6,8 +6,10 @@
 #define INDUSTRY_H
 
 #include "oldpool.h"
-#include "helpers.hpp"
+#include "core/random_func.hpp"
 #include "newgrf_storage.h"
+#include "cargo_type.h"
+#include "economy_type.h"
 
 typedef uint16 IndustryGfx;
 typedef uint8 IndustryType;
diff --git a/src/industry_cmd.cpp b/src/industry_cmd.cpp
index 6ad18ad2b..999537899 100644
--- a/src/industry_cmd.cpp
+++ b/src/industry_cmd.cpp
@@ -39,6 +39,7 @@
 #include "transparency.h"
 #include "water.h"
 #include "strings_func.h"
+#include "tile_cmd.h"
 
 void ShowIndustryViewWindow(int industry);
 void BuildOilRig(TileIndex tile);
@@ -1511,7 +1512,7 @@ static void DoCreateNewIndustry(Industry *i, TileIndex tile, int type, const Ind
 
 			DoCommand(cur_tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
 
-			MakeIndustry(cur_tile, i->index, it->gfx);
+			MakeIndustry(cur_tile, i->index, it->gfx, Random());
 
 			if (_generating_world) {
 				SetIndustryConstructionCounter(cur_tile, 3);
diff --git a/src/industry_map.h b/src/industry_map.h
index e7e53e6a5..77cab8920 100644
--- a/src/industry_map.h
+++ b/src/industry_map.h
@@ -156,11 +156,12 @@ static inline void SetIndustryGfx(TileIndex t, IndustryGfx gfx)
 
 /**
  * Make the given tile an industry tile
- * @param t     the tile to make an industry tile
- * @param index the industry this tile belongs to
- * @param gfx   the graphics to use for the tile
+ * @param t      the tile to make an industry tile
+ * @param index  the industry this tile belongs to
+ * @param gfx    the graphics to use for the tile
+ * @param random the random value
  */
-static inline void MakeIndustry(TileIndex t, IndustryID index, IndustryGfx gfx)
+static inline void MakeIndustry(TileIndex t, IndustryID index, IndustryGfx gfx, uint8 random)
 {
 	SetTileType(t, MP_INDUSTRY);
 	_m[t].m1 = 0;
@@ -168,7 +169,7 @@ static inline void MakeIndustry(TileIndex t, IndustryID index, IndustryGfx gfx)
 	_m[t].m3 = 0;
 	_m[t].m4 = 0;
 	SetIndustryGfx(t, gfx);
-	_me[t].m7 = Random();
+	_me[t].m7 = random;
 }
 
 /**
diff --git a/src/landscape.cpp b/src/landscape.cpp
index 1bff020a9..0abef68eb 100644
--- a/src/landscape.cpp
+++ b/src/landscape.cpp
@@ -21,6 +21,7 @@
 #include "water_map.h"
 #include "tgp.h"
 #include "genworld.h"
+#include "tile_cmd.h"
 
 extern const TileTypeProcs
 	_tile_type_clear_procs,
diff --git a/src/landscape.h b/src/landscape.h
index 81b180d1a..8324fc129 100644
--- a/src/landscape.h
+++ b/src/landscape.h
@@ -5,6 +5,8 @@
 #ifndef LANDSCAPE_H
 #define LANDSCAPE_H
 
+#include "gfx.h"
+
 enum {
 	SNOW_LINE_MONTHS = 12,
 	SNOW_LINE_DAYS   = 32,
@@ -47,13 +49,6 @@ void DrawFoundation(TileInfo *ti, Foundation f);
 void DoClearSquare(TileIndex tile);
 void RunTileLoop();
 
-uint32 GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode);
-void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac);
-void ChangeTileOwner(TileIndex tile, PlayerID old_player, PlayerID new_player);
-void AnimateTile(TileIndex tile);
-void ClickTile(TileIndex tile);
-void GetTileDesc(TileIndex tile, TileDesc *td);
-
 void InitializeLandscape();
 void GenerateLandscape(byte mode);
 
diff --git a/src/misc.cpp b/src/misc.cpp
index a74bc1394..3742f971d 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -24,6 +24,7 @@
 #include "cargotype.h"
 #include "group.h"
 #include "viewport.h"
+#include "economy_func.h"
 
 char _name_array[512][32];
 
diff --git a/src/misc_cmd.cpp b/src/misc_cmd.cpp
index 8597fe594..0d045d752 100644
--- a/src/misc_cmd.cpp
+++ b/src/misc_cmd.cpp
@@ -19,6 +19,7 @@
 #include "livery.h"
 #include "player_face.h"
 #include "strings_func.h"
+#include "vehicle.h"
 
 /** Change the player's face.
  * @param tile unused
diff --git a/src/misc_gui.cpp b/src/misc_gui.cpp
index cab869c7c..b3b9dcbcb 100644
--- a/src/misc_gui.cpp
+++ b/src/misc_gui.cpp
@@ -40,6 +40,8 @@
 #include "strings_func.h"
 #include "fileio.h"
 #include "fios.h"
+#include "tile_cmd.h"
+
 /* Variables to display file lists */
 FiosItem *_fios_list;
 int _saveload_mode;
diff --git a/src/network/network.cpp b/src/network/network.cpp
index 00e5a4163..d0558c4b7 100644
--- a/src/network/network.cpp
+++ b/src/network/network.cpp
@@ -30,6 +30,7 @@ extern const char _openttd_revision[];
 #include <stdarg.h> /* va_list */
 #include "../md5.h"
 #include "../fileio.h"
+#include "../texteff.hpp"
 
 /* Check whether NETWORK_NUM_LANDSCAPES is still in sync with NUM_LANDSCAPE */
 assert_compile((int)NETWORK_NUM_LANDSCAPES == (int)NUM_LANDSCAPE);
diff --git a/src/newgrf_cargo.h b/src/newgrf_cargo.h
index b28512ed0..2bad1213e 100644
--- a/src/newgrf_cargo.h
+++ b/src/newgrf_cargo.h
@@ -6,6 +6,7 @@
 #define NEWGRF_CARGO_H
 
 #include "newgrf_callbacks.h"
+#include "cargo_type.h"
 
 enum {
 	CC_NOAVAILABLE  = 0,       ///< No cargo class has been specified
diff --git a/src/newgrf_station.cpp b/src/newgrf_station.cpp
index 876a28139..790e5e8dc 100644
--- a/src/newgrf_station.cpp
+++ b/src/newgrf_station.cpp
@@ -5,7 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "variables.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "debug.h"
 #include "sprite.h"
diff --git a/src/news.h b/src/news.h
index 1330f9aa1..b84da7600 100644
--- a/src/news.h
+++ b/src/news.h
@@ -6,6 +6,7 @@
 #define NEWS_H
 
 #include "window_type.h"
+#include "vehicle_type.h"
 
 struct NewsItem {
 	StringID string_id; ///< Message text (sometimes also used for storing other info)
diff --git a/src/npf.cpp b/src/npf.cpp
index 3c7a0da05..76bebf27c 100644
--- a/src/npf.cpp
+++ b/src/npf.cpp
@@ -6,6 +6,8 @@
 #include "openttd.h"
 #include "bridge_map.h"
 #include "debug.h"
+#include "tile_cmd.h"
+#include "bridge.h"
 #include "functions.h"
 #include "landscape.h"
 #include "npf.h"
diff --git a/src/openttd.h b/src/openttd.h
index 216d74cf1..664a0b72c 100644
--- a/src/openttd.h
+++ b/src/openttd.h
@@ -28,7 +28,6 @@ struct Pair {
 
 #include "map.h"
 #include "slope_type.h"
-#include "vehicle_type.h"
 
 // Forward declarations of structs.
 struct Depot;
@@ -41,7 +40,6 @@ struct Industry;
 struct DrawPixelInfo;
 struct Group;
 typedef byte VehicleOrderID;  ///< The index of an order within its current vehicle (not pool related)
-typedef byte CargoID;
 typedef byte LandscapeID;
 typedef uint32 SpriteID;      ///< The number of a sprite, without mapping bits and colortables
 struct PalSpriteID {
@@ -233,55 +231,6 @@ struct GameDifficulty {
 	GDType town_council_tolerance; // minimum required town ratings to be allowed to demolish stuff
 };
 
-enum {
-	// Temperate
-	CT_PASSENGERS   =  0,
-	CT_COAL         =  1,
-	CT_MAIL         =  2,
-	CT_OIL          =  3,
-	CT_LIVESTOCK    =  4,
-	CT_GOODS        =  5,
-	CT_GRAIN        =  6,
-	CT_WOOD         =  7,
-	CT_IRON_ORE     =  8,
-	CT_STEEL        =  9,
-	CT_VALUABLES    = 10,
-
-	// Arctic
-	CT_WHEAT        =  6,
-	CT_HILLY_UNUSED =  8,
-	CT_PAPER        =  9,
-	CT_GOLD         = 10,
-	CT_FOOD         = 11,
-
-	// Tropic
-	CT_RUBBER       =  1,
-	CT_FRUIT        =  4,
-	CT_MAIZE        =  6,
-	CT_COPPER_ORE   =  8,
-	CT_WATER        =  9,
-	CT_DIAMONDS     = 10,
-
-	// Toyland
-	CT_SUGAR        =  1,
-	CT_TOYS         =  3,
-	CT_BATTERIES    =  4,
-	CT_CANDY        =  5,
-	CT_TOFFEE       =  6,
-	CT_COLA         =  7,
-	CT_COTTON_CANDY =  8,
-	CT_BUBBLES      =  9,
-	CT_PLASTIC      = 10,
-	CT_FIZZY_DRINKS = 11,
-
-	NUM_CARGO       = 32,
-
-	CT_NO_REFIT     = 0xFE,
-	CT_INVALID      = 0xFF
-};
-
-typedef uint AcceptedCargo[NUM_CARGO];
-
 struct TileDesc {
 	StringID str;
 	Owner owner;
@@ -295,78 +244,6 @@ struct ViewportSign {
 	byte width_1, width_2;
 };
 
-
-#include "command_type.h"
-typedef void DrawTileProc(TileInfo *ti);
-typedef uint GetSlopeZProc(TileIndex tile, uint x, uint y);
-typedef CommandCost ClearTileProc(TileIndex tile, byte flags);
-typedef void GetAcceptedCargoProc(TileIndex tile, AcceptedCargo res);
-typedef void GetTileDescProc(TileIndex tile, TileDesc *td);
-/**
- * GetTileTrackStatusProcs return a value that contains the possible tracks
- * that can be taken on a given tile by a given transport. The return value is
- * composed as follows: 0xaabbccdd. ccdd and aabb are bitmasks of trackdirs,
- * where bit n corresponds to trackdir n. ccdd are the trackdirs that are
- * present in the tile (1==present, 0==not present), aabb is the signal
- * status, if applicable (0==green/no signal, 1==red, note that this is
- * reversed from map3/2[tile] for railway signals).
- *
- * The result (let's call it ts) is often used as follows:
- * tracks = (byte)(ts | ts >>8)
- * This effectively converts the present part of the result (ccdd) to a
- * track bitmask, which disregards directions. Normally, this is the same as just
- * doing (byte)ts I think, although I am not really sure
- *
- * A trackdir is combination of a track and a dir, where the lower three bits
- * are a track, the fourth bit is the direction. these give 12 (or 14)
- * possible options: 0-5 and 8-13, so we need 14 bits for a trackdir bitmask
- * above.
- * @param tile     the tile to get the track status from
- * @param mode     the mode of transportation
- * @param sub_mode used to differentiate between different kinds within the mode
- * @return the above mentions track status information
- */
-typedef uint32 GetTileTrackStatusProc(TileIndex tile, TransportType mode, uint sub_mode);
-typedef void GetProducedCargoProc(TileIndex tile, CargoID *b);
-typedef void ClickTileProc(TileIndex tile);
-typedef void AnimateTileProc(TileIndex tile);
-typedef void TileLoopProc(TileIndex tile);
-typedef void ChangeTileOwnerProc(TileIndex tile, PlayerID old_player, PlayerID new_player);
-/** @see VehicleEnterTileStatus to see what the return values mean */
-typedef uint32 VehicleEnterTileProc(Vehicle *v, TileIndex tile, int x, int y);
-typedef Foundation GetFoundationProc(TileIndex tile, Slope tileh);
-/**
- * Called when a tile is affected by a terraforming operation.
- * The function has to check if terraforming of the tile is allowed and return extra terraform-cost that depend on the tiletype.
- * With DC_EXEC in flags it has to perform tiletype-specific actions (like clearing land etc., but not the terraforming itself).
- *
- * @note The terraforming has not yet taken place. So GetTileZ() and GetTileSlope() refer to the landscape before the terraforming operation.
- *
- * @param tile      The involved tile.
- * @param flags     Command flags passed to the terraform command (DC_EXEC, DC_QUERY_COST, etc.).
- * @param z_new     TileZ after terraforming.
- * @param tileh_new Slope after terraforming.
- * @return Error code or extra cost for terraforming (like clearing land, building foundations, etc., but not the terraforming itself.)
- */
-typedef CommandCost TerraformTileProc(TileIndex tile, uint32 flags, uint z_new, Slope tileh_new);
-
-struct TileTypeProcs {
-	DrawTileProc *draw_tile_proc;
-	GetSlopeZProc *get_slope_z_proc;
-	ClearTileProc *clear_tile_proc;
-	GetAcceptedCargoProc *get_accepted_cargo_proc;
-	GetTileDescProc *get_tile_desc_proc;
-	GetTileTrackStatusProc *get_tile_track_status_proc;
-	ClickTileProc *click_tile_proc;
-	AnimateTileProc *animate_tile_proc;
-	TileLoopProc *tile_loop_proc;
-	ChangeTileOwnerProc *change_tile_owner_proc;
-	GetProducedCargoProc *get_produced_cargo_proc;
-	VehicleEnterTileProc *vehicle_enter_tile_proc;
-	GetFoundationProc *get_foundation_proc;
-	TerraformTileProc *terraform_tile_proc;
-};
-
 typedef void PlaceProc(TileIndex tile);
 
 enum {
diff --git a/src/order.h b/src/order.h
index 17370db5e..a6e091c77 100644
--- a/src/order.h
+++ b/src/order.h
@@ -7,6 +7,8 @@
 
 #include "oldpool.h"
 #include "core/bitmath_func.hpp"
+#include "cargo_type.h"
+#include "vehicle_type.h"
 
 enum {
 	INVALID_VEH_ORDER_ID = 0xFF,
diff --git a/src/pathfind.cpp b/src/pathfind.cpp
index ae7d258fa..87a66ba50 100644
--- a/src/pathfind.cpp
+++ b/src/pathfind.cpp
@@ -7,7 +7,7 @@
 #include "bridge_map.h"
 #include "station_map.h"
 #include "depot.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "map.h"
 #include "pathfind.h"
@@ -17,6 +17,7 @@
 #include "variables.h"
 #include "depot.h"
 #include "tunnelbridge_map.h"
+#include "core/random_func.hpp"
 
 /* remember which tiles we have already visited so we don't visit them again. */
 static bool TPFSetTileBit(TrackPathFinder *tpf, TileIndex tile, int dir)
diff --git a/src/player.h b/src/player.h
index decfc15f4..83fd5f7fa 100644
--- a/src/player.h
+++ b/src/player.h
@@ -9,6 +9,8 @@
 #include "aystar.h"
 #include "rail_type.h"
 #include "road_func.h"
+#include "cargo_type.h"
+#include "command_type.h"
 #include "engine.h"
 #include "livery.h"
 #include "genworld.h"
diff --git a/src/rail.h b/src/rail.h
index 3d8be6a25..ccc6c7857 100644
--- a/src/rail.h
+++ b/src/rail.h
@@ -8,6 +8,7 @@
 #include "gfx.h"
 #include "rail_type.h"
 #include "track_type.h"
+#include "vehicle_type.h"
 #include "core/bitmath_func.hpp"
 #include "variables.h"
 #include "economy_func.h"
diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
index b30574ace..ee2d1e629 100644
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -8,7 +8,7 @@
 #include "bridge.h"
 #include "cmd_helper.h"
 #include "debug.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "rail_map.h"
 #include "road_map.h"
 #include "table/sprites.h"
@@ -2334,7 +2334,7 @@ static const signed char _deltacoord_leaveoffset[8] = {
 	 0,  1,  0, -1  /* y */
 };
 
-static uint32 VehicleEnter_Track(Vehicle *v, TileIndex tile, int x, int y)
+static VehicleEnterTileStatus VehicleEnter_Track(Vehicle *v, TileIndex tile, int x, int y)
 {
 	byte fract_coord;
 	byte fract_coord_leave;
diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
index 38257a96c..43519e0f6 100644
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -7,6 +7,7 @@
 #include "table/sprites.h"
 #include "table/strings.h"
 #include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "date.h"
 #include "map.h"
diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp
index a4162a54d..5e2546d08 100644
--- a/src/road_cmd.cpp
+++ b/src/road_cmd.cpp
@@ -13,7 +13,7 @@
 #include "sprite.h"
 #include "table/sprites.h"
 #include "table/strings.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "map.h"
 #include "landscape.h"
 #include "town_map.h"
@@ -1353,7 +1353,7 @@ static const byte _roadveh_enter_depot_dir[4] = {
 	TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
 };
 
-static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
+static VehicleEnterTileStatus VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
 {
 	switch (GetRoadTileType(tile)) {
 		case ROAD_TILE_CROSSING:
diff --git a/src/road_map.cpp b/src/road_map.cpp
index 4d6a1d6f8..51723fa14 100644
--- a/src/road_map.cpp
+++ b/src/road_map.cpp
@@ -5,8 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "bridge_map.h"
-#include "functions.h"
-#include "landscape.h"
+#include "tile_cmd.h"
 #include "road_map.h"
 #include "station.h"
 #include "tunnel_map.h"
diff --git a/src/roadveh_cmd.cpp b/src/roadveh_cmd.cpp
index d429f7dd3..c78d073a7 100644
--- a/src/roadveh_cmd.cpp
+++ b/src/roadveh_cmd.cpp
@@ -5,7 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "debug.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "road_map.h"
 #include "roadveh.h"
diff --git a/src/ship_cmd.cpp b/src/ship_cmd.cpp
index 75dd4438f..706049e0f 100644
--- a/src/ship_cmd.cpp
+++ b/src/ship_cmd.cpp
@@ -7,6 +7,7 @@
 #include "ship.h"
 #include "table/strings.h"
 #include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "map.h"
 #include "vehicle.h"
diff --git a/src/sound.h b/src/sound.h
index 2b3355a9e..fa4c987bd 100644
--- a/src/sound.h
+++ b/src/sound.h
@@ -5,7 +5,8 @@
 #ifndef SOUND_H
 #define SOUND_H
 
-#include "helpers.hpp"
+#include "core/enum_type.hpp"
+#include "vehicle_type.h"
 
 struct MusicFileSettings {
 	byte playlist;
diff --git a/src/station.h b/src/station.h
index 67173f559..62a7c69c4 100644
--- a/src/station.h
+++ b/src/station.h
@@ -12,6 +12,7 @@
 #include "road_type.h"
 #include "newgrf_station.h"
 #include "cargopacket.h"
+#include "cargo_type.h"
 #include <list>
 #include <set>
 
diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
index e876f4c10..ba31f9243 100644
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -9,7 +9,7 @@
 #include "bridge_map.h"
 #include "cmd_helper.h"
 #include "debug.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "station_map.h"
 #include "table/sprites.h"
@@ -2345,7 +2345,7 @@ static const byte _enter_station_speedtable[12] = {
 	215, 195, 175, 155, 135, 115, 95, 75, 55, 35, 15, 0
 };
 
-static uint32 VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
+static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
 {
 	if (v->type == VEH_TRAIN) {
 		if (IsRailwayStation(tile) && IsFrontEngine(v) &&
@@ -2365,7 +2365,7 @@ static uint32 VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
 					if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
 					if (y == TILE_SIZE / 2) {
 						if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
-						if (x == 12) return VETSB_ENTERED_STATION | (station_id << VETS_STATION_ID_OFFSET); /* enter station */
+						if (x == 12) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); /* enter station */
 						if (x < 12) {
 							uint16 spd;
 
diff --git a/src/texteff.cpp b/src/texteff.cpp
index 3d1d0250d..447a6c2a5 100644
--- a/src/texteff.cpp
+++ b/src/texteff.cpp
@@ -5,6 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "functions.h"
+#include "tile_cmd.h"
 #include "gfx.h"
 #include "landscape.h"
 #include "viewport.h"
diff --git a/src/tile_cmd.h b/src/tile_cmd.h
new file mode 100644
index 000000000..60f8940ce
--- /dev/null
+++ b/src/tile_cmd.h
@@ -0,0 +1,116 @@
+/* $Id$ */
+
+/** @file tile_cmd.h Generic 'commands' that can be performed on all tiles. */
+
+#ifndef TILE_CMD_H
+#define TILE_CMD_H
+
+#include "slope_type.h"
+#include "command_type.h"
+#include "vehicle_type.h"
+#include "cargo_type.h"
+
+/** The returned bits of VehicleEnterTile. */
+enum VehicleEnterTileStatus {
+	VETS_ENTERED_STATION  = 1, ///< The vehicle entered a station
+	VETS_ENTERED_WORMHOLE = 2, ///< The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/tunnel)
+	VETS_CANNOT_ENTER     = 3, ///< The vehicle cannot enter the tile
+
+	/**
+	 * Shift the VehicleEnterTileStatus this many bits
+	 * to the right to get the station ID when
+	 * VETS_ENTERED_STATION is set
+	 */
+	VETS_STATION_ID_OFFSET = 8,
+
+	/** Bit sets of the above specified bits */
+	VETSB_CONTINUE         = 0,                          ///< The vehicle can continue normally
+	VETSB_ENTERED_STATION  = 1 << VETS_ENTERED_STATION,  ///< The vehicle entered a station
+	VETSB_ENTERED_WORMHOLE = 1 << VETS_ENTERED_WORMHOLE, ///< The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/tunnel)
+	VETSB_CANNOT_ENTER     = 1 << VETS_CANNOT_ENTER,     ///< The vehicle cannot enter the tile
+};
+DECLARE_ENUM_AS_BIT_SET(VehicleEnterTileStatus);
+
+typedef void DrawTileProc(TileInfo *ti);
+typedef uint GetSlopeZProc(TileIndex tile, uint x, uint y);
+typedef CommandCost ClearTileProc(TileIndex tile, byte flags);
+typedef void GetAcceptedCargoProc(TileIndex tile, AcceptedCargo res);
+typedef void GetTileDescProc(TileIndex tile, TileDesc *td);
+
+/**
+ * GetTileTrackStatusProcs return a value that contains the possible tracks
+ * that can be taken on a given tile by a given transport. The return value is
+ * composed as follows: 0xaabbccdd. ccdd and aabb are bitmasks of trackdirs,
+ * where bit n corresponds to trackdir n. ccdd are the trackdirs that are
+ * present in the tile (1==present, 0==not present), aabb is the signal
+ * status, if applicable (0==green/no signal, 1==red, note that this is
+ * reversed from map3/2[tile] for railway signals).
+ *
+ * The result (let's call it ts) is often used as follows:
+ * tracks = (byte)(ts | ts >>8)
+ * This effectively converts the present part of the result (ccdd) to a
+ * track bitmask, which disregards directions. Normally, this is the same as just
+ * doing (byte)ts I think, although I am not really sure
+ *
+ * A trackdir is combination of a track and a dir, where the lower three bits
+ * are a track, the fourth bit is the direction. these give 12 (or 14)
+ * possible options: 0-5 and 8-13, so we need 14 bits for a trackdir bitmask
+ * above.
+ * @param tile     the tile to get the track status from
+ * @param mode     the mode of transportation
+ * @param sub_mode used to differentiate between different kinds within the mode
+ * @return the above mentions track status information
+ */
+typedef uint32 GetTileTrackStatusProc(TileIndex tile, TransportType mode, uint sub_mode);
+typedef void GetProducedCargoProc(TileIndex tile, CargoID *b);
+typedef void ClickTileProc(TileIndex tile);
+typedef void AnimateTileProc(TileIndex tile);
+typedef void TileLoopProc(TileIndex tile);
+typedef void ChangeTileOwnerProc(TileIndex tile, PlayerID old_player, PlayerID new_player);
+
+/** @see VehicleEnterTileStatus to see what the return values mean */
+typedef VehicleEnterTileStatus VehicleEnterTileProc(Vehicle *v, TileIndex tile, int x, int y);
+typedef Foundation GetFoundationProc(TileIndex tile, Slope tileh);
+
+/**
+ * Called when a tile is affected by a terraforming operation.
+ * The function has to check if terraforming of the tile is allowed and return extra terraform-cost that depend on the tiletype.
+ * With DC_EXEC in flags it has to perform tiletype-specific actions (like clearing land etc., but not the terraforming itself).
+ *
+ * @note The terraforming has not yet taken place. So GetTileZ() and GetTileSlope() refer to the landscape before the terraforming operation.
+ *
+ * @param tile      The involved tile.
+ * @param flags     Command flags passed to the terraform command (DC_EXEC, DC_QUERY_COST, etc.).
+ * @param z_new     TileZ after terraforming.
+ * @param tileh_new Slope after terraforming.
+ * @return Error code or extra cost for terraforming (like clearing land, building foundations, etc., but not the terraforming itself.)
+ */
+typedef CommandCost TerraformTileProc(TileIndex tile, uint32 flags, uint z_new, Slope tileh_new);
+
+struct TileTypeProcs {
+	DrawTileProc *draw_tile_proc;
+	GetSlopeZProc *get_slope_z_proc;
+	ClearTileProc *clear_tile_proc;
+	GetAcceptedCargoProc *get_accepted_cargo_proc;
+	GetTileDescProc *get_tile_desc_proc;
+	GetTileTrackStatusProc *get_tile_track_status_proc;
+	ClickTileProc *click_tile_proc;
+	AnimateTileProc *animate_tile_proc;
+	TileLoopProc *tile_loop_proc;
+	ChangeTileOwnerProc *change_tile_owner_proc;
+	GetProducedCargoProc *get_produced_cargo_proc;
+	VehicleEnterTileProc *vehicle_enter_tile_proc;
+	GetFoundationProc *get_foundation_proc;
+	TerraformTileProc *terraform_tile_proc;
+};
+
+extern const TileTypeProcs * const _tile_type_procs[16];
+
+uint32 GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode);
+void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac);
+void ChangeTileOwner(TileIndex tile, PlayerID old_player, PlayerID new_player);
+void AnimateTile(TileIndex tile);
+void ClickTile(TileIndex tile);
+void GetTileDesc(TileIndex tile, TileDesc *td);
+
+#endif /* TILE_CMD_H */
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
index 6620e86c6..fdf715f0f 100644
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -4,7 +4,7 @@
 
 #include "stdafx.h"
 #include "openttd.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "debug.h"
 #include "road_map.h"
 #include "road_internal.h" /* Cleaning up road bits */
diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index ee026d8eb..67ef268be 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -6,7 +6,7 @@
 #include "openttd.h"
 #include "bridge_map.h"
 #include "debug.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "gui.h"
 #include "station_map.h"
diff --git a/src/tree_cmd.cpp b/src/tree_cmd.cpp
index 4789864b0..2888091fe 100644
--- a/src/tree_cmd.cpp
+++ b/src/tree_cmd.cpp
@@ -9,7 +9,7 @@
 #include "table/strings.h"
 #include "table/sprites.h"
 #include "table/tree_land.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "map.h"
 #include "landscape.h"
 #include "tree_map.h"
diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index 82695f693..34f4d8b51 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -12,7 +12,7 @@
 #include "road_map.h"
 #include "table/sprites.h"
 #include "table/strings.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "map.h"
 #include "landscape.h"
 #include "tunnel_map.h"
@@ -1257,7 +1257,7 @@ static const byte _tunnel_fractcoord_5[4]    = {0x92, 0x89, 0x58, 0x25};
 static const byte _tunnel_fractcoord_6[4]    = {0x92, 0x89, 0x56, 0x45};
 static const byte _tunnel_fractcoord_7[4]    = {0x52, 0x85, 0x96, 0x49};
 
-static uint32 VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
+static VehicleEnterTileStatus VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
 {
 	int z = GetSlopeZ(x, y) - v->z_pos;
 
diff --git a/src/unmovable_cmd.cpp b/src/unmovable_cmd.cpp
index 5b373201f..034341b7c 100644
--- a/src/unmovable_cmd.cpp
+++ b/src/unmovable_cmd.cpp
@@ -6,7 +6,7 @@
 #include "openttd.h"
 #include "table/strings.h"
 #include "table/sprites.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "map.h"
 #include "command_func.h"
diff --git a/src/variables.h b/src/variables.h
index 613cecc9e..f21afc024 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -11,9 +11,6 @@
 
 #include "gfx.h"
 
-VARDEF Money  _cargo_payment_rates[NUM_CARGO];
-VARDEF uint16 _cargo_payment_rates_frac[NUM_CARGO];
-
 struct GameOptions {
 	GameDifficulty diff;
 	byte diff_level;
@@ -39,9 +36,6 @@ VARDEF GameOptions *_opt_ptr;
 /* Amount of game ticks */
 VARDEF uint16 _tick_counter;
 
-/* This one is not used anymore. */
-VARDEF VehicleID _vehicle_id_ctr_day;
-
 /* Skip aging of cargo? */
 VARDEF byte _age_cargo_skip_counter;
 
@@ -293,7 +287,6 @@ VARDEF uint32 _news_display_opt;
 VARDEF bool _news_ticker_sound;
 
 VARDEF StringID _error_message;
-VARDEF Money _additional_cash_required;
 
 VARDEF bool _rightclick_emulate;
 
@@ -317,10 +310,6 @@ VARDEF byte _switch_mode;
 VARDEF StringID _switch_mode_errorstr;
 VARDEF SmallFiosItem _file_to_saveload;
 
-
-
-VARDEF Vehicle *_place_clicked_vehicle;
-
 VARDEF char _ini_videodriver[32], _ini_musicdriver[32], _ini_sounddriver[32], _ini_blitter[32];
 
 VARDEF int _num_resolutions;
@@ -339,8 +328,6 @@ VARDEF char *_log_file;
 /* landscape.cpp */
 extern const byte _tileh_to_sprite[32];
 
-extern const TileTypeProcs * const _tile_type_procs[16];
-
 extern bool _draw_bounding_boxes;
 
 /* misc */
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index 82fb34edd..0c9dfabd3 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -10,7 +10,7 @@
 #include "spritecache.h"
 #include "table/sprites.h"
 #include "table/strings.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "map.h"
 #include "vehicle.h"
diff --git a/src/vehicle.h b/src/vehicle.h
index 7ab327fee..0b7f35d67 100644
--- a/src/vehicle.h
+++ b/src/vehicle.h
@@ -11,29 +11,11 @@
 #include "track_type.h"
 #include "rail_type.h"
 #include "road_type.h"
+#include "cargo_type.h"
 #include "window_type.h"
 #include "cargopacket.h"
 #include "texteff.hpp"
-
-/** The returned bits of VehicleEnterTile. */
-enum VehicleEnterTileStatus {
-	VETS_ENTERED_STATION  = 1, ///< The vehicle entered a station
-	VETS_ENTERED_WORMHOLE = 2, ///< The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/tunnel)
-	VETS_CANNOT_ENTER     = 3, ///< The vehicle cannot enter the tile
-
-	/**
-	 * Shift the VehicleEnterTileStatus this many bits
-	 * to the right to get the station ID when
-	 * VETS_ENTERED_STATION is set
-	 */
-	VETS_STATION_ID_OFFSET = 8,
-
-	/** Bit sets of the above specified bits */
-	VETSB_CONTINUE         = 0,                          ///< The vehicle can continue normally
-	VETSB_ENTERED_STATION  = 1 << VETS_ENTERED_STATION,  ///< The vehicle entered a station
-	VETSB_ENTERED_WORMHOLE = 1 << VETS_ENTERED_WORMHOLE, ///< The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/tunnel)
-	VETSB_CANNOT_ENTER     = 1 << VETS_CANNOT_ENTER,     ///< The vehicle cannot enter the tile
-};
+#include "command_type.h"
 
 /** Road vehicle states */
 enum RoadVehicleStates {
@@ -829,4 +811,9 @@ static inline uint32 GetCmdSendToDepot(const Vehicle *v)
 	return GetCmdSendToDepot(v->type);
 }
 
+/* This one is not used anymore. */
+VARDEF VehicleID _vehicle_id_ctr_day;
+VARDEF Vehicle *_place_clicked_vehicle;
+
+
 #endif /* VEHICLE_H */
diff --git a/src/viewport.cpp b/src/viewport.cpp
index 1ef7b9ccb..f02ee112e 100644
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -5,7 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "debug.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "gui.h"
 #include "spritecache.h"
 #include "table/sprites.h"
diff --git a/src/viewport.h b/src/viewport.h
index 9cff8861d..08ef26744 100644
--- a/src/viewport.h
+++ b/src/viewport.h
@@ -7,6 +7,8 @@
 
 #include "zoom.hpp"
 #include "window_type.h"
+#include "vehicle_type.h"
+#include "gfx.h"
 
 struct ViewPort {
 	int left,top;                       // screen coordinates for the viewport
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 16f9a6b7e..a40129658 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -10,7 +10,7 @@
 #include "station_map.h"
 #include "table/sprites.h"
 #include "table/strings.h"
-#include "functions.h"
+#include "tile_cmd.h"
 #include "landscape.h"
 #include "map.h"
 #include "vehicle.h"
@@ -891,7 +891,7 @@ static void ChangeTileOwner_Water(TileIndex tile, PlayerID old_player, PlayerID
 	}
 }
 
-static uint32 VehicleEnter_Water(Vehicle *v, TileIndex tile, int x, int y)
+static VehicleEnterTileStatus VehicleEnter_Water(Vehicle *v, TileIndex tile, int x, int y)
 {
 	return VETSB_CONTINUE;
 }
diff --git a/src/yapf/yapf.hpp b/src/yapf/yapf.hpp
index 2bbbc0a7a..dda6780c8 100644
--- a/src/yapf/yapf.hpp
+++ b/src/yapf/yapf.hpp
@@ -17,7 +17,7 @@
 #include "../station.h"
 #include "../station_map.h"
 #include "../date.h"
-#include "../functions.h"
+#include "../tile_cmd.h"
 #include "../landscape.h"
 #include "yapf.h"
 #include "../pathfind.h"