AiBehavior.h

#pragma once
 
#include <AiPlugin/AiPluginDLL.h>
#include <GameEngine/GameEngineDLL.h>
 
class plAiBehavior;
class plAiPerceptionManager;
class plAiPerception;
class plGameObject;
class plAiActionQueue;
 
enum class plAiScoreCategory
{
  Fallback,    
  Idle,        
  ActiveIdle,  
  Investigate, 
  Command,     
  Combat,      
  Interrupt,   
};
 
class plAiBehaviorScore
{
public:
  plAiBehaviorScore() {}
 
  void SetScore(plAiScoreCategory category, float fValue)
  {
    PL_ASSERT_DEBUG(fValue >= 0.0f && fValue <= 1.0f, "Value is out of 0-1 range.");
    m_fValue = static_cast<float>(category) + fValue;
  }
 
  float GetScore() const { return m_fValue; }
 
  const plAiPerception* m_pPerception = nullptr;
 
private:
  float m_fValue = 0.0f;
};
 
struct plAiBehaviorCandidate
{
  plAiBehavior* m_pBehavior = nullptr;
  const plAiPerception* m_pPerception = nullptr;
  float m_fScore = 0.0f;
};
 
class PL_AIPLUGIN_DLL plAiBehavior
{
public:
  plAiBehavior() = default;
  virtual ~plAiBehavior() = default;
 
  struct ContinuationState
  {
    bool m_bAllowBehaviorSwitch = true;
    bool m_bEndBehavior = false;
  };
 
  virtual bool IsAvailable(float fActiveBehaviorScore) const { return true; }
  virtual void FlagNeededPerceptions(plAiPerceptionManager& ref_PerceptionManager) = 0;
 
  virtual plAiBehaviorScore DetermineBehaviorScore(plGameObject& owner, const plAiPerceptionManager& perceptionManager) = 0;
 
  virtual void ActivateBehavior(plGameObject& owner, const plAiPerception* pPerception, plAiActionQueue& inout_ActionQueue) = 0;
  virtual void ReactivateBehavior(plGameObject& owner, const plAiPerception* pPerception, plAiActionQueue& inout_ActionQueue) = 0;
  virtual void DeactivateBehavior(plGameObject& owner, plAiActionQueue& inout_ActionQueue) {}
  virtual ContinuationState ContinueBehavior(plGameObject& owner, plAiActionQueue& inout_ActionQueue)
  {
    ContinuationState res;
    res.m_bEndBehavior = inout_ActionQueue.IsEmpty();
    return res;
  }
 
  virtual plTime GetCooldownDuration() { return plTime::MakeZero(); }
};