using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using VoxelIsometricRenderer.Properties;

namespace VoxelIsometricRenderer
{
    public partial class Terrain4 : Form
    {
        public static bool running = true;
        public static List<Voxel> Voxels = new List<Voxel>();
        public static Thread MainThread;
        public static float scale = 2f;
        public static int FPS = 0;
        public static int Frames = 0;
        public Terrain4()
        {
            InitializeComponent();
            TextureManager.AddBitmap(Resources.grasside);
            TextureManager.AddBitmap(Resources.grasstop);
            TextureManager.AddBitmap(Resources.dirt);
            TextureManager.AddBitmap(Resources.log);
            TextureManager.AddBitmap(Resources.sprucelog);
            TextureManager.AddBitmap(Resources.logtop);
            TextureManager.AddBitmap(Resources.leaves);
            TextureManager.AddBitmap(Resources.spruceleaves);
            TextureManager.AddBitmap(Resources.stone1);
            TextureManager.AddBitmap(Resources.stone2);
            TextureManager.AddBitmap(Resources.stone3);
            TextureManager.AddBitmap(Resources.ore1);
            TextureManager.AddBitmap(Resources.flower);
            TextureManager.AddBitmap(Resources.vine);
            TextureManager.AddBitmap(Resources.grasstall);
            TextureManager.AddBitmap(Resources.grassmed);
            TextureManager.AddBitmap(Resources.BlueSquare);
            TextureManager.AddBitmap(Resources.greenSquare);
            TextureManager.AddBitmap(Resources.RedSquare);
            TextureManager.AddBitmap(Resources.YellowSquare);
            TextureManager.AddBitmap(Resources.PinkSquare);
            TextureManager.AddBitmap(Resources.OrangeSquare);
            TextureManager.AddBitmap(Resources.ColourEdges);
            Voxels.Add(new Voxel(0, 0, 0, 0, 0, 0));
            Voxels.Add(new Voxel(9, 9, 9, 9, 9, 9));
            Voxels.Add(new Voxel(10, 10, 10, 10, 10, 10));
            Voxels.Add(new Voxel(11, 11, 11, 11, 11, 11));
            Voxels.Add(new Voxel(12, 12, 12, 12, 12, 12));
            Voxels.Add(new Voxel(3, 3, 3, 3, 3, 3));
            Voxels.Add(new Voxel(1, 1, 1, 1, 2, 3));
            Voxels.Add(new Voxel(4, 4, 4, 4, 6, 6));
            Voxels.Add(new Voxel(5, 5, 5, 5, 6, 6));
            Voxels.Add(new Voxel(7, 7, 7, 7, 7, 7));
            Voxels.Add(new Voxel(17, 18, 19, 20, 21, 22));
            Voxels.Add(new Voxel(23, 23, 23, 23, 23, 23));
            Voxels.Add(new Voxel(17, 18, 19, 20, -1, -1));
            Voxels.Add(new Voxel(23, 23, 23, 23, -1, -1));
            Voxels.Add(new Voxel(-1, -1, -1, -1, 21, 22));
            Voxels.Add(new Voxel(-1, -1, -1, -1, 23, 23));
            Voxels.Add(new Voxel(1, 13, 13, 13, 13, -1, -1));
            Voxels.Add(new Voxel(1, 14, 14, 14,14, -1, -1));
            Voxels.Add(new Voxel(1, 15, 15, 15,15, -1, -1));
            Voxels.Add(new Voxel(1, 16, 16, 16,16, -1, -1));
            Random rnd = new Random();
            for(int i = 0; i < 25; i++)
            {
                Voxels.Add(new Voxel(rnd.Next(0,TextureManager.textures.Count - 1), rnd.Next(0, TextureManager.textures.Count - 1), rnd.Next(0, TextureManager.textures.Count - 1), rnd.Next(0, TextureManager.textures.Count - 1), rnd.Next(0, TextureManager.textures.Count - 1), rnd.Next(0, TextureManager.textures.Count - 1)));
            }
            TextureManager.GenerateVoxelFaces();
            for (int i = 0; i < Voxels.Count; i++)
            {
                //TextureManager.CreateModel(Voxels[i]);
            }
            MainThread = new Thread(Runtime);
            MainThread.SetApartmentState(ApartmentState.STA);
            MainThread.Start();
            ResizeDisplay();
        }

        private void Runtime()
        {
            bool up = false;
            double LightingFrameTime = Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds;
            double SecondFrameTime = Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds;
            while (running)
            {
                Display.Refresh();
                if (Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds - LightingFrameTime > 16)
                {
                    LightingFrameTime = Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds;
                    LightingManager.UpdateLighting();
                    LightingManager.sunAngles[0] += 5f;
                    LightingManager.sunAngles[1] += 1f;
                }
                if (Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds - SecondFrameTime > 1000) {
                    SecondFrameTime = Process.GetCurrentProcess().TotalProcessorTime.TotalMilliseconds;
                    FPS = Frames;
                    Frames = 0;
                }
                if (up && LightingManager.AmbientColouring[0] < 1.5f)
                {
                    //LightingManager.AmbientColouring[0] += 0.01f;
                    //LightingManager.AmbientColouring[1] += 0.01f;
                    //LightingManager.AmbientColouring[2] += 0.01f;
                }
                else if (up) up = false;
                else if (LightingManager.AmbientColouring[0] > 0.5f)
                {
                    //LightingManager.AmbientColouring[0] -= 0.01f;
                    //LightingManager.AmbientColouring[1] -= 0.01f;
                    //LightingManager.AmbientColouring[2] -= 0.01f;
                }
                else up = true;
            }
        }
        private void Draw(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            g.PixelOffsetMode = PixelOffsetMode.Half;
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
            g.ScaleTransform(scale, scale);
            int x = 0;
            int y = 0;
            foreach(Voxel voxel in Voxels)
            {
                voxel.Draw(g,2 + x,2 + y);
                x += 36;
                if ((x+32) * scale > Width)
                {
                    y += 36;
                    x = 0;
                }
            }
            g.ResetTransform();
            g.DrawString(String.Format("FPS: {0}", FPS), SystemFonts.DefaultFont, Brushes.Red, new PointF(0, 0));
            Frames++;
        }
        public void ResizeDisplay()
        {
            Display.Left = 0;
            Display.Top = 0;
            Display.Width = Width;
            Display.Height = Height;
        }
        private void ResizeAspectRatio(object sender, EventArgs e)
        {
            ResizeDisplay();
        }

        private void KillThreads(object sender, FormClosingEventArgs e)
        {
            running = false;
        }

        private void KeyDownEvent(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Up) scale += 0.25f;
            if (e.KeyCode == Keys.Down) scale -= 0.25f;
        }

        private void KeyUpEvent(object sender, KeyEventArgs e)
        {

        }

        private void Terrain4_Load(object sender, EventArgs e)
        {

        }
    }
}