1 files changed, 112 insertions, 0 deletions
diff --git a/src/depot.h b/src/depot.h
new file mode 100644
index 000000000..7cf25a1b1
--- /dev/null
+++ b/src/depot.h
@@ -0,0 +1,112 @@
+/* $Id$ */
+
+#ifndef DEPOT_H
+#define DEPOT_H
+
+/** @file depot.h Header files for depots (not hangars)
+ *  @see depot.c */
+
+#include "direction.h"
+#include "oldpool.h"
+#include "tile.h"
+#include "variables.h"
+
+struct Depot {
+	TileIndex xy;
+	TownID town_index;
+	DepotID index;
+};
+
+DECLARE_OLD_POOL(Depot, Depot, 3, 8000)
+
+/**
+ * Check if a depot really exists.
+ */
+static inline bool IsValidDepot(const Depot *depot)
+{
+	return depot != NULL && depot->xy != 0;
+}
+
+static inline bool IsValidDepotID(uint index)
+{
+	return index < GetDepotPoolSize() && IsValidDepot(GetDepot(index));
+}
+
+void DestroyDepot(Depot *depot);
+
+static inline void DeleteDepot(Depot *depot)
+{
+	DestroyDepot(depot);
+	depot->xy = 0;
+}
+
+void ShowDepotWindow(TileIndex tile, byte type);
+
+#define FOR_ALL_DEPOTS_FROM(d, start) for (d = GetDepot(start); d != NULL; d = (d->index + 1U < GetDepotPoolSize()) ? GetDepot(d->index + 1U) : NULL) if (IsValidDepot(d))
+#define FOR_ALL_DEPOTS(d) FOR_ALL_DEPOTS_FROM(d, 0)
+
+#define MIN_SERVINT_PERCENT  5
+#define MAX_SERVINT_PERCENT 90
+#define MIN_SERVINT_DAYS    30
+#define MAX_SERVINT_DAYS   800
+
+/**
+ * Get the service interval domain.
+ * Get the new proposed service interval for the vehicle is indeed, clamped
+ * within the given bounds. @see MIN_SERVINT_PERCENT ,etc.
+ * @param index proposed service interval
+ */
+static inline Date GetServiceIntervalClamped(uint index)
+{
+	return (_patches.servint_ispercent) ? clamp(index, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : clamp(index, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
+}
+
+/**
+ * Check if a tile is a depot of the given type.
+ */
+static inline bool IsTileDepotType(TileIndex tile, TransportType type)
+{
+	switch (type) {
+		case TRANSPORT_RAIL:
+			return IsTileType(tile, MP_RAILWAY) && (_m[tile].m5 & 0xFC) == 0xC0;
+
+		case TRANSPORT_ROAD:
+			return IsTileType(tile, MP_STREET) && (_m[tile].m5 & 0xF0) == 0x20;
+
+		case TRANSPORT_WATER:
+			return IsTileType(tile, MP_WATER) && (_m[tile].m5 & ~3) == 0x80;
+
+		default:
+			assert(0);
+			return false;
+	}
+}
+
+
+/**
+ * Find out if the slope of the tile is suitable to build a depot of given direction
+ * @param direction The direction in which the depot's exit points. Starts with 0 as NE and goes Clockwise
+ * @param tileh The slope of the tile in question
+ * @return true if the construction is possible
+
+ * This is checked by the ugly 0x4C >> direction magic, which does the following:
+ * 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
+ * So: for direction (only the significant bits are shown)<p>
+ * 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
+ * 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
+ * 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
+ * 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
+ * So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh
+ */
+static inline bool CanBuildDepotByTileh(uint32 direction, Slope tileh)
+{
+	return ((0x4C >> direction) & tileh) != 0;
+}
+
+Depot *GetDepotByTile(TileIndex tile);
+void InitializeDepots(void);
+Depot *AllocateDepot(void);
+
+void DeleteDepotHighlightOfVehicle(const Vehicle *v);
+
+#endif /* DEPOT_H */