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 - this.transform.position.x) + (sizeX / 2.0f) * voxelScale);
        int y = (int)((worldPosition.z - this.transform.position.z) + (sizeY / 2.0f) * voxelScale);
        return new Vector3Int(0,0,0);
    }
    public Vector3 positionInWorld(Vector3 voxelPosition)
    {
        float x = ((voxelPosition.x + this.transform.position.x - sizeX / 2.0f) / voxelScale);
        float y = ((voxelPosition.z + this.transform.position.z - sizeY / 2.0f) / voxelScale);
        return new Vector3(0,0,0);
    }
    public int getPheromoneAt(float x, float y)
    {
        //zadanie 2.3
        Vector3Int vectorVoxel = positionInVoxelSpace(new Vector3(x, 0, y));
        if (vectorVoxel.x < 0 || vectorVoxel.x >= sizeX || vectorVoxel.z < 0 || vectorVoxel.z >= sizeY)
        {
            return -1;
        }
        return voxels[vectorVoxel.x, vectorVoxel.z];
    }
    void updateVoxelSpace()
    {
        //zadanie 2.5
        if (voxelSpace.positionInVoxelSpace(transform.position).x == voxelSpace.sizeX - 1 || voxelSpace.positionInVoxelSpace(transform.position).z == voxelSpace.sizeY - 1)
        {
            //hasFood = false;
            foodSearch = 1;
        }
    }
    
    // --------------------------------------------------------
    // --------------------------------------------------------
    // ----------------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()
    {
        Debug.Log("max="+maxVoxel());
        Debug.Log("start: "+(new Vector3(3.5f,5.5f,4.5f)));
        Debug.Log("midle: "+(positionInVoxelSpace(new Vector3(3.5f,5.5f,4.5f))));
        Debug.Log("endin: "+(positionInWorld(positionInVoxelSpace(new Vector3(3.5f,5.5f,4.5f)))));
        Debug.Log("zeroo: "+(positionInWorld(new Vector3(0,0,0))));
        
        
        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);
                    
                    Debug.Log(i+"x"+j+"="+m+"    posW "+a+"   posV "+b+"  phs "+c);
                }
            }
        }
        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;
        }
    }
}