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103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
#ifndef GAME_MWMECHANICS_AIPACKAGE_H
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#define GAME_MWMECHANICS_AIPACKAGE_H
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#include "pathfinding.hpp"
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#include <components/esm/defs.hpp>
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#include "obstacle.hpp"
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#include "aistate.hpp"
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namespace MWWorld
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{
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class Ptr;
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}
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namespace ESM
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{
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struct Cell;
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namespace AiSequence
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{
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struct AiSequence;
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}
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}
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namespace MWMechanics
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{
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const float AI_REACTION_TIME = 0.25f;
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/// \brief Base class for AI packages
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class AiPackage
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{
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public:
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///Enumerates the various AITypes availible.
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enum TypeId {
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TypeIdNone = -1,
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TypeIdWander = 0,
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TypeIdTravel = 1,
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TypeIdEscort = 2,
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TypeIdFollow = 3,
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TypeIdActivate = 4,
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TypeIdCombat = 5,
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TypeIdPursue = 6,
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TypeIdAvoidDoor = 7
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};
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///Default constructor
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AiPackage();
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///Default Deconstructor
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virtual ~AiPackage();
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///Clones the package
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virtual AiPackage *clone() const = 0;
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/// Updates and runs the package (Should run every frame)
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/// \return Package completed?
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virtual bool execute (const MWWorld::Ptr& actor, AiState& state, float duration) = 0;
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/// Returns the TypeID of the AiPackage
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/// \see enum TypeId
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virtual int getTypeId() const = 0;
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/// Higher number is higher priority (0 being the lowest)
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virtual unsigned int getPriority() const {return 0;}
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virtual void writeState (ESM::AiSequence::AiSequence& sequence) const {}
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/// Simulates the passing of time
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virtual void fastForward(const MWWorld::Ptr& actor, AiState& state) {}
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protected:
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/// Causes the actor to attempt to walk to the specified location
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/** \return If the actor has arrived at his destination **/
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bool pathTo(const MWWorld::Ptr& actor, const ESM::Pathgrid::Point& dest, float duration, float destTolerance = 0.0f);
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/// Check if there aren't any obstacles along the path to make shortcut possible
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/// If a shortcut is possible then path will be cleared and filled with the destination point.
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/// \param destInLOS If not NULL function will return ray cast check result
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/// \return If can shortcut the path
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bool shortcutPath(const ESM::Pathgrid::Point& startPoint, const ESM::Pathgrid::Point& endPoint, const MWWorld::Ptr& actor, bool *destInLOS);
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/// Check if the way to the destination is clear, taking into account actor speed
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bool checkWayIsClearForActor(const ESM::Pathgrid::Point& startPoint, const ESM::Pathgrid::Point& endPoint, const MWWorld::Ptr& actor);
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virtual bool doesPathNeedRecalc(ESM::Pathgrid::Point dest, const ESM::Cell *cell);
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// TODO: all this does not belong here, move into temporary storage
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PathFinder mPathFinder;
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ObstacleCheck mObstacleCheck;
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float mTimer;
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float mStuckTimer;
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ESM::Position mStuckPos;
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ESM::Pathgrid::Point mPrevDest;
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bool mShortcutProhibited; // shortcutting may be prohibited after unsuccessful attempt
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ESM::Pathgrid::Point mShortcutFailPos; // position of last shortcut fail
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};
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}
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#endif
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