using UnityEngine;

namespace VolumetricFogAndMist
{
	public class DemoFogOfWar : MonoBehaviour
	{
		private bool fogCuttingOn = true;

		private VolumetricFog fog;

		private void Start()
		{
			fog = VolumetricFog.instance;
			fog.fogOfWarEnabled = fogCuttingOn;
			fog.ResetFogOfWar();
		}

		private void Update()
		{
			if (Input.GetKeyDown(KeyCode.F))
			{
				switch (fog.preset)
				{
				case FOG_PRESET.Clear:
					fog.preset = FOG_PRESET.Mist;
					break;
				case FOG_PRESET.Mist:
					fog.preset = FOG_PRESET.WindyMist;
					break;
				case FOG_PRESET.WindyMist:
					fog.preset = FOG_PRESET.GroundFog;
					break;
				case FOG_PRESET.GroundFog:
					fog.preset = FOG_PRESET.FrostedGround;
					break;
				case FOG_PRESET.FrostedGround:
					fog.preset = FOG_PRESET.FoggyLake;
					break;
				case FOG_PRESET.FoggyLake:
					fog.preset = FOG_PRESET.Fog;
					break;
				case FOG_PRESET.Fog:
					fog.preset = FOG_PRESET.HeavyFog;
					break;
				case FOG_PRESET.HeavyFog:
					fog.preset = FOG_PRESET.LowClouds;
					break;
				case FOG_PRESET.LowClouds:
					fog.preset = FOG_PRESET.SeaClouds;
					break;
				case FOG_PRESET.SeaClouds:
					fog.preset = FOG_PRESET.Smoke;
					break;
				case FOG_PRESET.Smoke:
					fog.preset = FOG_PRESET.ToxicSwamp;
					break;
				case FOG_PRESET.ToxicSwamp:
					fog.preset = FOG_PRESET.SandStorm1;
					break;
				case FOG_PRESET.SandStorm1:
					fog.preset = FOG_PRESET.SandStorm2;
					break;
				case FOG_PRESET.SandStorm2:
					fog.preset = FOG_PRESET.Mist;
					break;
				}
			}
			else if (Input.GetKeyDown(KeyCode.T))
			{
				fog.enabled = !fog.enabled;
			}
			else if (Input.GetKeyDown(KeyCode.C))
			{
				fogCuttingOn = !fogCuttingOn;
				fog.fogOfWarEnabled = fogCuttingOn;
				fog.ResetFogOfWar();
			}
			else if (Input.GetKeyDown(KeyCode.R))
			{
				fog.ResetFogOfWar();
			}
			if (fogCuttingOn)
			{
				fog.SetFogOfWarAlpha(Camera.main.transform.position, 4f, 0f);
			}
		}

		private void AssignCustomTexture()
		{
			VolumetricFog instance = VolumetricFog.instance;
			Texture2D texture2D = Resources.Load<Texture2D>("Textures/alphaDemo");
			Color32[] pixels = texture2D.GetPixels32();
			instance.fogOfWarTextureSize = 64;
			instance.fogOfWarTextureData = pixels;
		}

		private void OnGUI()
		{
			Rect position = new Rect(10f, 10f, Screen.width - 20, 30f);
			GUI.Label(position, "Move around with WASD or cursor keys, space to jump");
			position = new Rect(10f, 30f, Screen.width - 20, 30f);
			GUI.Label(position, "F key to change fog style, T to toggle fog on/off, C to toggle fog cutting");
			position = new Rect(10f, 50f, Screen.width - 20, 30f);
			GUI.Label(position, "R to reset fog.");
			position = new Rect(10f, 75f, Screen.width - 20, 30f);
			GUI.Label(position, "Current fog preset: " + VolumetricFog.instance.GetCurrentPresetName());
			if (fogCuttingOn)
			{
				position = new Rect(10f, 95f, Screen.width - 20, 30f);
				GUI.Label(position, "*** FOG CUTTING ON ***");
			}
		}
	}
}