(svn r15027) -Merge: tomatos and bananas left to be, here is NoAI for all to see.

NoAI is an API (a framework) to build your own AIs in. See:
   http://wiki.openttd.org/wiki/index.php/AI:Main_Page
 With many thanks to:
  - glx and Rubidium for their syncing, feedback and hard work
  - Yexo for his feedback, patches, and AIs which tested the system very deep
  - Morloth for his feedback and patches
  - TJIP for hosting a challenge which kept NoAI on track
  - All AI authors for testing our AI API, and all other people who helped in one way or another
-Remove: all old AIs and their cheats/hacks

src/ai/api/ai_depotlist.cpp

@@ -0,0 +1,42 @@
+/* $Id$ */
+
+/** @file ai_depotlist.cpp Implementation of AIDepotList and friends. */
+
+#include "ai_depotlist.hpp"
+#include "../../core/math_func.hpp"
+#include "../../tile_map.h"
+#include "../../company_func.h"
+#include "../../depot_base.h"
+#include "../../station_base.h"
+
+AIDepotList::AIDepotList(AITile::TransportType transport_type)
+{
+	::TileType tile_type;
+	switch (transport_type) {
+		default: return;
+
+		case AITile::TRANSPORT_ROAD:  tile_type = ::MP_ROAD; break;
+		case AITile::TRANSPORT_RAIL:  tile_type = ::MP_RAILWAY; break;
+		case AITile::TRANSPORT_WATER: tile_type = ::MP_WATER; break;
+
+		case AITile::TRANSPORT_AIR: {
+			/* Hangars are not seen as real depots by the depot code. */
+			const Station *st;
+			FOR_ALL_STATIONS(st) {
+				if (st->owner == ::_current_company) {
+					const AirportFTAClass *afc = st->Airport();
+					for (uint i = 0; i < afc->nof_depots; i++) {
+						this->AddItem(st->xy + ToTileIndexDiff(afc->airport_depots[i]));
+					}
+				}
+			}
+			return;
+		}
+	}
+
+	/* Handle 'standard' depots. */
+	const Depot *depot;
+	FOR_ALL_DEPOTS(depot) {
+		if (::GetTileOwner(depot->xy) == ::_current_company && ::IsTileType(depot->xy, tile_type)) this->AddItem(depot->xy);
+	}
+}