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/*  Project Starshatter 4.5
	Destroyer Studios LLC
	Copyright © 1997-2004. All Rights Reserved.

	SUBSYSTEM:    Stars.exe
	FILE:         TacticalAI.h
	AUTHOR:       John DiCamillo


	OVERVIEW
	========
	Common base class and interface for mid-level (tactical) AI
*/

#ifndef TacticalAI_h
#define TacticalAI_h

#include "Types.h"
#include "Director.h"

// +--------------------------------------------------------------------+

class Ship;
class ShipAI;
class Instruction;
class CarrierAI;

// +--------------------------------------------------------------------+

class TacticalAI : public Director
{
public:
	TacticalAI(ShipAI* ai);
	virtual ~TacticalAI();

	enum ROE {
		NONE,
		SELF_DEFENSIVE,
		DEFENSIVE,
		DIRECTED,
		FLEXIBLE,
		AGRESSIVE
	};

	virtual void      ExecFrame(double seconds);

	virtual ROE       RulesOfEngagement()  const { return roe;           }
	virtual double    ThreatLevel()        const { return threat_level;  }
	virtual double    SupportLevel()       const { return support_level; }

protected:
	// pick the best target if we don't have one yet:
	virtual void      CheckOrders();
	virtual bool      CheckShipOrders();
	virtual bool      ProcessOrders();
	virtual bool      CheckFlightPlan();
	virtual bool      CheckObjectives();

	virtual void      SelectTarget();
	virtual void      SelectTargetDirected(Ship* tgt=0);
	virtual void      SelectTargetOpportunity();
	virtual void      CheckTarget();
	virtual void      FindThreat();
	virtual void      FindSupport();
	virtual void      FindFormationSlot(int formation);

	virtual bool      CanTarget(Ship* tgt);
	virtual void      ClearRadioOrders();

	Ship*             ship;
	ShipAI*           ship_ai;
	CarrierAI*        carrier_ai;

	Instruction*      navpt;
	Instruction*      orders;

	double            agression;
	ROE               roe;
	int               element_index;
	int               action;
	int               exec_time;
	int               directed_tgtid;

	double            threat_level;
	double            support_level;
};

// +--------------------------------------------------------------------+

#endif TacticalAI_h