volume.hpp

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#pragma once
#include "toast/events/signals.hpp"
 
#include <toast/export.hpp>
#include <toast/world/node_3d.hpp>
 
namespace toast {
class AudioListener;

struct VolumeTarget {
  Box<AudioListener> listener;
 
  glm::vec3 position;
  glm::vec3 forward;
};
 
class TOAST_API [[ToastNode, Hidden, Interface, Icon("Area")]] Volume : public Node3D {
public:
  [[Reflect, Color]]
  glm::vec4 debug_color = glm::vec4(0.0f, 1.0f, 0.251f, 0.5f);
  [[Reflect]]
  bool debug_fill = true;
  virtual auto evaluateTarget(const VolumeTarget& target, float weight = 1.0f) -> bool = 0;
  virtual void resetAccumulators() = 0;
 
  [[nodiscard]]
  auto isGlobal() const -> bool;
  void isGlobal(bool value);
 
  [[nodiscard]]
  auto priority() const -> int8_t;
  void priority(int8_t value);
 
  [[nodiscard]]
  auto weight() const -> float;
  void weight(float value);
 
  [[nodiscard]]
  auto blendDistance() const -> float;
  void blendDistance(float value);
 
  signals::Signal<Box<Node>> node_exited;     // TODO:
  signals::Signal<Box<Node>> node_entered;    // TODO:
 
protected:
  void updateInspectorMessages() override;
 
  [[nodiscard]]
  auto calculateWeight(const VolumeTarget& target) const -> float;

  [[nodiscard]]
  virtual auto closestPointOnBounds(glm::vec3 point) const -> glm::vec3;
 
private:
  void init();
  void destroy();
  void onEnable();
  void onDisable();
  void drawDebug();
  bool m_debug_visible = false;
  [[Reflect]]
  bool m_is_global = false;
 
  [[Reflect]]
  int8_t m_priority = 0;
 
  [[Reflect, Range(0.0, 1.0)]]
  float m_weight = 1.0f;
 
  [[Reflect, Unit("m")]]
  float m_blend_distance = 0.0f;
};
 
}