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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef TRANSPORT_CAI_H
#define TRANSPORT_CAI_H
#include "MobileCAI.h"
#include "System/float3.h"
#include <list>
#include <vector>
#define UNLOAD_LAND 0
#define UNLOAD_DROP 1
#define UNLOAD_LANDFLOOD 2
#define UNLOAD_CRASHFLOOD 3
class CTransportUnit;
class CUnit;
class CFeature;
struct Command;
class CTransportCAI : public CMobileCAI
{
public:
CR_DECLARE(CTransportCAI)
CTransportCAI(CUnit* owner);
CTransportCAI();
~CTransportCAI();
void SetTransportee(CUnit* unit);
void GiveCommandReal(const Command& c, bool fromSynced = true);
void SlowUpdate();
bool CanTransport(const CUnit* unit) const;
bool FindEmptySpot(const float3& center, float radius, float spread, float3& found, const CUnit* unitToUnload, bool fromSynced = true);
bool FindEmptyDropSpots(float3 startpos, float3 endpos, std::list<float3>& dropSpots);
bool FindEmptyFloodSpots(float3 startpos, float3 endpos, std::list<float3>& dropSpots, std::vector<float3> exitDirs);
CUnit* FindUnitToTransport(float3 center, float radius);
int GetDefaultCmd(const CUnit* pointed, const CFeature* feature);
void FinishCommand();
bool IsBusyLoading(const CUnit* unit) const;
bool LoadStillValid(CUnit* unit);
virtual void ExecuteUnloadUnit(Command& c);
virtual void ExecuteUnloadUnits(Command& c);
virtual void ExecuteLoadUnits(Command& c);
int unloadType;
int toBeTransportedUnitId;
int lastCall;
private:
void UnloadUnits_Land(Command& c, CTransportUnit* transport);
void UnloadUnits_Drop(Command& c, CTransportUnit* transport);
void UnloadUnits_LandFlood(Command& c, CTransportUnit* transport);
void UnloadUnits_CrashFlood(Command& c, CTransportUnit* transport); // FIXME incomplete
void UnloadNormal(Command& c);
void UnloadLand(Command& c);
/// parachute drop units
void UnloadDrop(Command& c);
/// land and dispatch units all at once
void UnloadLandFlood(Command& c);
/// slam into landscape abruptly and dispatch units all at once (incomplete)
void UnloadCrashFlood(Command& c);
virtual bool AllowedCommand(const Command& c, bool fromSynced);
bool SpotIsClear(float3 pos, CUnit* u);
/**
* This is a version of SpotIsClear that ignores the tranport and all
* units it carries.
*/
bool SpotIsClearIgnoreSelf(float3 pos, CUnit* unitToUnload);
std::list<float3> dropSpots;
bool isFirstIteration;
float3 startingDropPos;
float3 lastDropPos;
/// direction from which we travel to drop point
float3 approachVector;
float3 endDropPos;
};
#endif /* TRANSPORT_CAI_H */
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