using UnityEngine;

namespace VolumetricFogAndMist
{
	[AddComponentMenu("")]
	public class FogVolume : MonoBehaviour
	{
		private const float GRAY = 0.8901961f;

		[Tooltip("Enables transition to a given profile.")]
		public bool enableProfileTransition;

		[Tooltip("Assign the transition profile.")]
		public VolumetricFogProfile targetProfile;

		[Tooltip("Enables alpha transition.")]
		public bool enableAlphaTransition;

		[Range(0f, 1f)]
		[Tooltip("Target alpha for fog when camera enters this fog volume")]
		public float targetFogAlpha = 0.5f;

		[Tooltip("Target alpha for sky haze when camera enters this fog volume")]
		[Range(0f, 1f)]
		public float targetSkyHazeAlpha = 0.5f;

		[Tooltip("Enables fog color transition.")]
		public bool enableFogColorTransition;

		[Tooltip("Target fog color 1 when gamera enters this fog folume")]
		public Color targetFogColor = new Color(0.8901961f, 0.8901961f, 0.8901961f);

		[Tooltip("Enables fog specular color transition.")]
		public bool enableFogSpecularColorTransition;

		[Tooltip("Target fog color 2 when gamera enters this fog folume")]
		public Color targetFogSpecularColor = new Color(0.8901961f, 0.8901961f, 0.8901961f);

		[Tooltip("Enables light color transition.")]
		public bool enableLightColorTransition;

		[Tooltip("Target light color when gamera enters this fog folume")]
		public Color targetLightColor = Color.white;

		[Tooltip("Set this to zero for changing fog alpha immediately upon enter/exit fog volume.")]
		public float transitionDuration = 3f;

		[Tooltip("Set collider that will trigger this fog volume. If not set, this fog volume will react to any collider which has the main camera. If you use a third person controller, assign the character collider here.")]
		public Collider targetCollider;

		[Tooltip("When enabled, a console message will be printed whenever this fog volume is entered or exited.")]
		public bool debugMode;

		[Tooltip("Assign target Volumetric Fog component that will be affected by this volume.")]
		public VolumetricFog targetFog;

		private bool cameraInside;

		private void Start()
		{
			if (targetFog == null)
			{
				targetFog = VolumetricFog.instance;
			}
			if (targetFog != null)
			{
				targetFog.useFogVolumes = true;
			}
		}

		private void OnTriggerEnter(Collider other)
		{
			if (!cameraInside && !(targetFog == null) && (other == targetCollider || other.gameObject.transform.GetComponentInChildren<Camera>() == targetFog.fogCamera))
			{
				cameraInside = true;
				if (enableProfileTransition && targetProfile != null)
				{
					targetFog.SetTargetProfile(targetProfile, transitionDuration);
				}
				if (enableAlphaTransition)
				{
					targetFog.SetTargetAlpha(targetFogAlpha, targetSkyHazeAlpha, transitionDuration);
				}
				if (enableFogColorTransition)
				{
					targetFog.SetTargetColor(targetFogColor, transitionDuration);
				}
				if (enableFogSpecularColorTransition)
				{
					targetFog.SetTargetSpecularColor(targetFogSpecularColor, transitionDuration);
				}
				if (enableLightColorTransition)
				{
					targetFog.SetTargetLightColor(targetLightColor, transitionDuration);
				}
				if (debugMode)
				{
					Debug.Log("Fog Volume entered by " + other.name);
				}
			}
		}

		private void OnTriggerExit(Collider other)
		{
			if (cameraInside && !(targetFog == null) && (other == targetCollider || other.gameObject.transform.GetComponentInChildren<Camera>() == targetFog.fogCamera))
			{
				cameraInside = false;
				if (enableProfileTransition && targetProfile != null)
				{
					targetFog.ClearTargetProfile(transitionDuration);
				}
				if (enableAlphaTransition)
				{
					targetFog.ClearTargetAlpha(transitionDuration);
				}
				if (enableFogColorTransition)
				{
					targetFog.ClearTargetColor(transitionDuration);
				}
				if (enableFogSpecularColorTransition)
				{
					targetFog.ClearTargetSpecularColor(transitionDuration);
				}
				if (enableLightColorTransition)
				{
					targetFog.ClearTargetLightColor(transitionDuration);
				}
				if (debugMode)
				{
					Debug.Log("Fog Volume exited by " + other.name);
				}
			}
		}
	}
}