using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Shapes;

namespace AibisDream
{
    [ExecuteAlways]public class LakeWaveGrid : ImmediateModeShapeDrawer
    {
        public int gridSize = 32;
        public float spacing = 0.2f;
        public float waveHeight = 0.2f;
        public float waveSpeed = 2f;
        public float lineThickness = 0.01f;
        public float pointRadius = 0.02f;

        public override void DrawShapes(Camera cam)
        {
            Draw.LineGeometry = LineGeometry.Volumetric3D;
            Draw.ThicknessSpace = ThicknessSpace.Meters;
            Draw.Color = Color.cyan;

            float time = Time.time;

            Vector3[,] points = new Vector3[gridSize, gridSize];

            for (int x = 0; x < gridSize; x++)
            {
                for (int y = 0; y < gridSize; y++)
                {
                    float fx = (x - gridSize / 2f) * spacing;
                    float fy = (y - gridSize / 2f) * spacing;

                    float wave = Mathf.Sin(fx * 2f + time * waveSpeed) * 0.5f +
                                 Mathf.Cos(fy * 3f + time * waveSpeed * 1.3f) * 0.5f;
                    float height = wave * waveHeight;

                    points[x, y] = new Vector3(fx, fy + height, 0);
                    Draw.Disc(points[x, y], Vector3.forward, pointRadius);
                }
            }

            for (int x = 0; x < gridSize - 1; x++)
            {
                for (int y = 0; y < gridSize; y++)
                {
                    Draw.Line(points[x, y], points[x + 1, y], lineThickness);
                }
            }

            for (int x = 0; x < gridSize; x++)
            {
                for (int y = 0; y < gridSize - 1; y++)
                {
                    Draw.Line(points[x, y], points[x, y + 1], lineThickness);
                }
            }
        }

    }
}