diff --git a/src/ai/ai.h b/src/ai/ai.h
deleted file mode 100644
--- a/src/ai/ai.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* $Id$ */
-
-/** @file ai.h Base functions for all AIs. */
-
-#ifndef AI_H
-#define AI_H
-
-#include "../network/network.h"
-#include "../command_type.h"
-#include "../core/random_func.hpp"
-#include "../settings_type.h"
-
-/* How DoCommands look like for an AI */
-struct AICommand {
-	uint32 tile;
-	uint32 p1;
-	uint32 p2;
-	uint32 cmd;
-	CommandCallback *callback;
-
-	char *text;
-	uint uid;
-
-	AICommand *next;
-};
-
-/* The struct for an AIScript Company */
-struct AICompany {
-	bool active;            ///< Is this AI active?
-	AICommand *queue;       ///< The commands that he has in his queue
-	AICommand *queue_tail;  ///< The tail of this queue
-};
-
-/* The struct to keep some data about the AI in general */
-struct AIStruct {
-	/* General */
-	bool enabled;           ///< Is AI enabled?
-	uint tick;              ///< The current tick (something like _frame_counter, only for AIs)
-};
-
-extern AIStruct _ai;
-extern AICompany _ai_company[MAX_COMPANIES];
-
-// ai.c
-void AI_StartNewAI(CompanyID company);
-void AI_CompanyDied(CompanyID company);
-void AI_RunGameLoop();
-void AI_Initialize();
-void AI_Uninitialize();
-CommandCost AI_DoCommand(TileIndex tile, uint32 p1, uint32 p2, uint32 flags, uint procc, const char *text = NULL);
-CommandCost AI_DoCommandCc(TileIndex tile, uint32 p1, uint32 p2, uint32 flags, uint procc, CommandCallback *callback, const char *text = NULL);
-
-/** Is it allowed to start a new AI.
- * This function checks some boundries to see if we should launch a new AI.
- * @return True if we can start a new AI.
- */
-static inline bool AI_AllowNewAI()
-{
-	/* If disabled, no AI */
-	if (!_ai.enabled)
-		return false;
-
-	/* If in network, but no server, no AI */
-	if (_networking && !_network_server)
-		return false;
-
-	/* If in network, and server, possible AI */
-	if (_networking && _network_server) {
-		/* Do we want AIs in multiplayer? */
-		if (!_settings_game.ai.ai_in_multiplayer)
-			return false;
-
-		/* Only the NewAI is allowed... sadly enough the old AI just doesn't support this
-		 *  system, because all commands are delayed by at least 1 tick, which causes
-		 *  a big problem, because it uses variables that are only set AFTER the command
-		 *  is really executed... */
-		if (!_settings_game.ai.ainew_active)
-			return false;
-	}
-
-	return true;
-}
-
-#define AI_CHANCE16(a, b)    ((uint16)     AI_Random()  <= (uint16)((65536 * a) / b))
-#define AI_CHANCE16R(a, b, r) ((uint16)(r = AI_Random()) <= (uint16)((65536 * a) / b))
-
-/**
- * The random-function that should be used by ALL AIs.
- */
-static inline uint AI_RandomRange(uint max)
-{
-	/* We pick RandomRange if we are in SP (so when saved, we do the same over and over)
-	 *   but we pick InteractiveRandomRange if we are a network_server or network-client.
-	 */
-	if (_networking)
-		return InteractiveRandomRange(max);
-	else
-		return RandomRange(max);
-}
-
-/**
- * The random-function that should be used by ALL AIs.
- */
-static inline uint32 AI_Random()
-{
-/* We pick RandomRange if we are in SP (so when saved, we do the same over and over)
-	 *   but we pick InteractiveRandomRange if we are a network_server or network-client.
-	 */
-	if (_networking)
-		return InteractiveRandom();
-	else
-		return Random();
-}
-
-#endif /* AI_H */