import polyplex;
import polyplex.math;
import polyplex.core.window;
import polyplex.core.input;
import polyplex.core.game;
import polyplex.core.color;
import polyplex.core.render;
import polyplex.core.content;
import std.conv;

void main(string[] args) {
  // Show info logs.
  LogLevel |= LogType.Info;
  
  // Select Open GL as a graphics backend.
  // Changing the property and rerunning InitLibraries will:
  // 1. unload the previous graphics backend library from memory
  // 2. bind the new prefered graphics backend.
  ChosenBackend = GraphicsBackend.OpenGL;
  InitLibraries();
  Game my_game = new Game1();
  my_game.Run();
}

class Game1 : Game {
  Texture2D my_texture;

  // Constructor
  this() {
    WindowInfo inf = new WindowInfo();
    inf.Name = "Game1";
    inf.Bounds = new Rectangle(WindowPosition.Undefined, WindowPosition.Undefined, 1080, 1024);
    super(inf);
  }
  
  //Init is run before the game loop starts.
  public override void Init() {
    my_texture = this.Content.LoadTexture("my_texture");
  }
  
  //Update is run before draw in the game loop.
  public override void Update(GameTimes game_time) {
    // Quit game if Q is pressed.
    if (Input.IsKeyDown(KeyCode.Q)) this.Quit();
    
    //FPS counter as window title.
    Window.Title = "FPS: " ~ to!string(AverageFPS);
  }
  
  //Draw is run after the logic update of the game loop.
  public override void Draw(GameTimes game_time) {
  
    //Clears color, generally put first in the Draw method.
    Drawing.ClearColor(Colors.Black);
    
    sprite_batch.Begin();
    sprite_batch.Draw(my_texture, new Rectangle(0, 0, 32, 32), new Rectangle(0, 0, my_texture.Width, my_texture.Height), Color.White);
    sprite_batch.End();
  }
}