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/* $Id$ */
/** @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 */
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