using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class VoxelSpace : MonoBehaviour
{
    public int sizeX = 10;
    public int sizeY = 10;
    public int animationFrames = 30;
    public int fermonsWeakenTime = 500;
    public int relocateFoodTime = 2000;
    public int numberOfAnts = 5;
    public float voxelScale = 1.0f;
    public GameObject previewShape;
    public Ant antShape;
    public GameObject food;
    public byte[,] voxels;
    Ant[] ants;
    GameObject[,] lights;
    Settings settings;

    int frame;


    // --------------------------------------------------------
    // --------------------------------------------------------
    // ----------------funkcje-do-zadan------------------------
    // --------------------------------------------------------
    // --------------------------------------------------------
	void createVoxelSpace()
	{
		this.voxels = new byte[this.sizeX, this.sizeY];
		this.lights = new GameObject[this.sizeX, this.sizeY];

		for (int x = 0; x < this.sizeX; x++)
		{
			for (int y = 0; y < this.sizeY; y++)
			{
				this.voxels[x, y] = 0;
				this.lights[x, y] = Instantiate(previewShape);
				this.lights[x, y].transform.position = positionInWorld(new Vector3(x, 0, y));
			}
		}
	}

    public Vector3Int positionInVoxelSpace(Vector3 worldPosition)
    {
        int x = (int)((worldPosition.x - gameObject.transform.position.x + (sizeX / 2.0f)) * voxelScale);
        int z = (int)((worldPosition.z - gameObject.transform.position.z + (sizeY / 2.0f)) * voxelScale);

        return new Vector3Int(x, 0, z);
    }

    public Vector3 positionInWorld(Vector3 voxelPosition)
    {
        float x = ((voxelPosition.x + gameObject.transform.position.x - sizeX / 2.0f) / voxelScale);
        float z = ((voxelPosition.z + gameObject.transform.position.z - sizeY / 2.0f) / voxelScale);

        return new Vector3(x, 0, z);
    }

    public int getPheromoneAt(float x, float y)
    {
        Vector3Int pos = positionInVoxelSpace(new Vector3(x, 0, y));
        if (0 < pos.x && pos.x < sizeX && 0 < pos.z && pos.z < sizeY)
        {
            return voxels[pos.x, pos.z];
        }


        return -1;
    }

    void updateVoxelSpace()
    {
		//zadanie 2.5
		for(var i = 0; i < voxels.GetLength(0); i++)
		{
			for(var j = 0; j < voxels.GetLength(1); j++)
			{
				var v = voxels[i,j];
				if (0 < v && v < 250)
				{
					v--;
				}
			}
		}
    }

    // --------------------------------------------------------
    // --------------------------------------------------------
    // ----------------koniec-zadan---funkcje pomocnicze-------
    // --------------------------------------------------------
    // --------------------------------------------------------

    // Start is called before the first frame update
    void Start()
    {
        loadSettings();
        frame = 0;
        setTableScale();
        createVoxelSpace();
        placeFood();
        addAnts();

    }

    // Update is called once per frame
    void Update()
    {
        if (frame % animationFrames == 0)
        {
            foreach (Ant ant in ants)
            {
                ant.sniff();
            }
            updateLights();
            GameObject.Find("anthill").transform.position = positionInWorld(new Vector3(-1, 0, -1));// gameObject.transform.position - (gameObject.transform.localScale)/2.0f;
        }
        else
        {
            foreach (Ant ant in ants)
            {
                ant.go();
            }
        }
        if (frame % fermonsWeakenTime == 0)
        {
            updateVoxelSpace();
        }
        if (frame % relocateFoodTime == 0)
        {
            placeFood();
        }
        frame++;
        if (Input.GetKeyUp(KeyCode.Escape))
        {
            SceneManager.LoadScene(sceneName: "menu");
        }
    }
    int maxVoxel()
    {
        int m = 0;
        for (int i = 0; i < sizeX; i++)
        {
            for (int j = 0; j < sizeY; j++)
            {
                if (m < voxels[i, j])
                {
                    m = voxels[i, j];
                    var a = positionInWorld(new Vector3(i, 0, j));
                    var b = positionInVoxelSpace(a);
                    var c = getPheromoneAt(a.x, a.z);
                }
            }
        }
        return m;
    }
    void addAnts()
    {
        ants = new Ant[numberOfAnts];
        for (int i = 0; i < numberOfAnts; i++)
        {
            ants[i] = Instantiate(antShape);
            ants[i].gameObject.transform.position = positionInWorld(new Vector3(1, 0.3f, 1));
            ants[i].gameObject.transform.rotation = Quaternion.Euler(0, -90, 0);
            ants[i].foodSearch = -1;
            ants[i].hasFood = false;
            ants[i].voxelSpace = this;
        }
    }

    void updateLights()
    {
        for (int i = 0; i < sizeX; i++)
        {
            for (int j = 0; j < sizeY; j++)
            {
                float newScale = voxels[i, j] / 1020.0f;
                lights[i, j].transform.localScale = new Vector3(newScale, newScale, newScale);
                if (newScale * 3.0f > 0.51f)
                {
                    lights[i, j].transform.GetChild(0).GetComponent<Light>().enabled = true;
                    lights[i, j].transform.GetChild(0).GetComponent<Light>().intensity = newScale * 3.0f;
                }
                else
                {
                    lights[i, j].transform.GetChild(0).GetComponent<Light>().enabled = false;
                }
            }
        }
    }
    Vector2 foodPos;
    void placeFood()
    {
        if (foodPos != null)
        {
            voxels[(int)(foodPos.x), (int)(foodPos.y)] = 0;
        }
        int x = (int)Random.Range(4, sizeX - 1);
        int y = (int)Random.Range(4, sizeY - 1);
        food.transform.position = positionInWorld(new Vector3(x, 0, y));
        foodPos = new Vector2(x, y);
        voxels[x, y] = 255;
    }
    void setTableScale()
    {
        gameObject.transform.localScale = new Vector3(sizeX + 2.0f, sizeY + 2.0f, 12.0f);

        Vector3 randomMove = new Vector3(Random.Range(-10.0f, 10.0f), 0, Random.Range(-10.0f, 10.0f));
        gameObject.transform.position = new Vector3(sizeX / 2.0f, -0.1f, sizeY / 2.0f) + randomMove;
        GameObject camera = GameObject.Find("Main Camera");
        camera.transform.position = new Vector3(sizeX / 2.0f, sizeX / 2.0f + sizeY / 2.0f + 1.0f, sizeY / 2.0f) + randomMove;
    }
    void loadSettings()
    {
        if (SettingsMenu.settings != null)
        {
            settings = SettingsMenu.settings;
            sizeX = settings.sizeX;
            sizeY = settings.sizeY;
            animationFrames = settings.fps;
            fermonsWeakenTime = settings.weakenPheromones;
            relocateFoodTime = settings.refreshFood;
            numberOfAnts = settings.antsCount;
        }
    }
}