using GAP_ParticleSystemController;
using UnityEngine;
using UnityEngine.UIElements;

public class UnitMover : MonoBehaviour
{
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    //calculates a unit formation around a given location
    public static Vector3[] GetUnitGroupDestination(Vector3 moveToPos, int numUnits, float unitGap)
    {
        //vector3 array for final destinations
        Vector3[] destinations = new Vector3[numUnits];
        //calculate the rows and columns
        int rows = Mathf.RoundToInt(Mathf.Sqrt(numUnits));
        int cols = Mathf.CeilToInt((float)numUnits / rows);
        //we need to know the current row and column we're calculating
        int curRow = 0;
        int curCol = 0;
        float width = ((float)rows - 1) * unitGap;
        float length = ((float)cols - 1) * unitGap;
        for(int x = 0; x < numUnits; x++)
        {
            destinations[x] = moveToPos = (new Vector3(curRow, 0, curCol) * unitGap) - new Vector3(length / 2, 0, width / 2);
            curCol++;
            if(curCol == rows)
            {
                curCol = 0;
                curRow++;
            }
        }
        return destinations;
    }
    public static Vector3[] GetUnitGroupDestinationsAroundResource(Vector3 resourcePos, int unitsNum)
    {
        Vector3[] destinations = new Vector3[unitsNum];
        float unitDistanceGap = 160.0f / (float)unitsNum;
        for(int x = 0; x < unitsNum; x++)
        {
            float angle = unitDistanceGap * x;
            Vector3 dir = new Vector3(Mathf.Sin(angle * Mathf.Deg2Rad), 0, Mathf.Cos(angle * Mathf.Deg2Rad));
            destinations[x] = resourcePos + dir;
        }
        return destinations;
    }
    public static Vector3 GetUnitDestinationAroundResource(Vector3 resourcePos)
    {
        float angle = Random.Range(0, 360);
        Vector3 dir = new Vector3(Mathf.Sin(angle * Mathf.Deg2Rad), 0, Mathf.Cos(angle * Mathf.Deg2Rad));
        return resourcePos;
    }
}