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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _COMMAND_AI_H
#define _COMMAND_AI_H
#include <functional>
#include <vector>
#include "System/Object.h"
#include "CommandDescription.h"
#include "CommandQueue.h"
#include "System/float3.h"
#include "System/UnorderedSet.hpp"
class CUnit;
class CFeature;
class CWeapon;
struct Command;
class CCommandAI : public CObject
{
CR_DECLARE_DERIVED(CCommandAI)
public:
CCommandAI(CUnit* owner);
CCommandAI();
virtual ~CCommandAI();
void DependentDied(CObject* o) override;
static void InitCommandDescriptionCache();
static void KillCommandDescriptionCache();
inline void SetOrderTarget(CUnit* o);
virtual void AddDeathDependence(CObject* o, DependenceType dep) override;
virtual void DeleteDeathDependence(CObject* o, DependenceType dep) override;
void AddCommandDependency(const Command& c);
void ClearCommandDependencies();
// these both feed into GiveCommandReal()
void GiveCommand(const Command& c, bool fromSynced = true ); // sim
void GiveCommand(const Command& c, int playerNum, bool fromSynced , bool fromLua); // net,Lua
void ClearTargetLock(const Command& fc);
void WeaponFired(CWeapon* weapon, const bool searchForNewTarget);
virtual bool CanWeaponAutoTarget(const CWeapon* weapon) const { return true; }
virtual int GetDefaultCmd(const CUnit* pointed, const CFeature* feature);
virtual void SlowUpdate();
virtual void GiveCommandReal(const Command& c, bool fromSynced = true);
virtual void FinishCommand();
virtual void BuggerOff(const float3& pos, float radius) {}
virtual void StopMove() {}
void StopAttackingTargetIf(const std::function<bool(const CUnit*)>& pred);
void StopAttackingAllyTeam(int ally);
/**
* @brief Determines if c will cancel a queued command
* @return true if c will cancel a queued command
*/
bool WillCancelQueued(const Command& c) const;
bool HasCommand(int cmdID) const;
bool HasMoreMoveCommands(bool skipFirstCmd = true) const;
int CancelCommands(const Command& c, CCommandQueue& queue, bool& first);
/**
* @brief Finds the queued command that would be canceled by the Command c
* @return An iterator pointing at the command, or commandQue.end(),
* if no such queued command exists
*/
CCommandQueue::const_iterator GetCancelQueued(const Command& c, const CCommandQueue& queue) const;
/**
* @brief Returns commands that overlap c, but will not be canceled by c
* @return a vector containing commands that overlap c
*/
std::vector<Command> GetOverlapQueued(const Command& c) const;
std::vector<Command> GetOverlapQueued(const Command& c, const CCommandQueue& queue) const;
const std::vector<const SCommandDescription*>& GetPossibleCommands() const { return possibleCommands; }
/**
* @brief Causes this CommandAI to execute the attack order c
*/
virtual void ExecuteAttack(Command& c);
/**
* @brief executes the stop command c
*/
virtual void ExecuteStop(Command& c);
void UpdateCommandDescription(unsigned int cmdDescIdx, const Command& cmd);
void UpdateCommandDescription(unsigned int cmdDescIdx, SCommandDescription&& modCmdDesc);
void InsertCommandDescription(unsigned int cmdDescIdx, SCommandDescription&& cmdDesc);
bool RemoveCommandDescription(unsigned int cmdDescIdx);
void UpdateNonQueueingCommands();
void SetCommandDescParam0(const Command& c);
bool ExecuteStateCommand(const Command& c);
void ExecuteInsert(const Command& c, bool fromSynced = true);
void ExecuteRemove(const Command& c);
void AddStockpileWeapon(CWeapon* weapon);
void StockpileChanged(CWeapon* weapon);
void UpdateStockpileIcon();
bool CanChangeFireState() const;
virtual bool AllowedCommand(const Command& c, bool fromSynced);
CWeapon* stockpileWeapon;
std::vector<const SCommandDescription*> possibleCommands;
spring::unordered_set<int> nonQueingCommands;
CCommandQueue commandQue;
int lastUserCommand;
int selfDCountdown;
int lastFinishCommand;
CUnit* owner;
CUnit* orderTarget;
bool targetDied;
bool inCommand;
bool repeatOrders;
int lastSelectedCommandPage;
protected:
// return true by default so non-AirCAI's trigger FinishCommand
virtual bool SelectNewAreaAttackTargetOrPos(const Command& ac) { return true; }
bool IsAttackCapable() const;
bool SkipParalyzeTarget(const CUnit* target) const;
void GiveAllowedCommand(const Command& c, bool fromSynced = true);
void GiveWaitCommand(const Command& c);
/**
* @brief Returns the command that keeps the unit close to the path
* @return a Fight Command with 6 arguments, the first three being where to
* return to (the current position of the unit), and the second being
* the location of the original command.
*/
void PushOrUpdateReturnFight(const float3& cmdPos1, const float3& cmdPos2);
int UpdateTargetLostTimer(int unitID);
void DrawDefaultCommand(const Command& c) const;
private:
// FIXME make synced?
spring::unsynced_set<CObject*> commandDeathDependences;
/**
* continuously set to some non-zero value while target is in radar
* decremented by 1 every SlowUpdate (!), command is canceled when
* timer reaches 0
*/
int targetLostTimer;
};
inline void CCommandAI::SetOrderTarget(CUnit* o) {
if (orderTarget != NULL) {
// NOTE As we do not include Unit.h,
// the compiler does not know that CUnit derives from CObject,
// and thus we can not use static_cast<CObject*>(...) here.
DeleteDeathDependence(reinterpret_cast<CObject*>(orderTarget), DEPENDENCE_ORDERTARGET);
}
orderTarget = o;
if (orderTarget != NULL) {
AddDeathDependence(reinterpret_cast<CObject*>(orderTarget), DEPENDENCE_ORDERTARGET);
}
}
#endif // _COMMAND_AI_H
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