public void Render(Camera<OrthographicProjection> camera, PlayerEntity player, IChunkAccess chunk)
{
var topLeft = Vector3.Transform(new Vector3(camera.Projection.Left, camera.Projection.Top, 0), camera.ModelViewMatrix.Inverted());
var bottomRight = Vector3.Transform(new Vector3(camera.Projection.Right, camera.Projection.Bottom, 0), camera.ModelViewMatrix.Inverted());
var minX = (int)Math.Floor(topLeft.X);
var maxX = (int)Math.Ceiling(bottomRight.X);
var minY = (int)Math.Floor(topLeft.Y);
var maxY = (int)Math.Ceiling(bottomRight.Y);
_tessellator.BindColor(Color.White);
_tessellator.LoadIdentity();
_tessellator.Begin(PrimitiveType.Quads);
RenderLayer(_tessellator, chunk, ChunkLayer.Background, minX, maxX, minY, maxY);
RenderLayer(_tessellator, chunk, ChunkLayer.Floor, minX, maxX, minY, maxY);
RenderEntities(_tessellator, chunk, minX, maxX, minY, maxY);
RenderLayer(_tessellator, chunk, ChunkLayer.Blocking, minX, maxX, minY, maxY);
RenderLayer(_tessellator, chunk, ChunkLayer.Ceiling, minX, maxX, minY, maxY);
var fov = CalculateFieldOfView(_tessellator, camera, player, chunk, minX, maxX, minY, maxY);
RenderFieldOfView(fov, _tessellator, camera, chunk, minX, maxX, minY, maxY);
_tessellator.End();
}
private void Render(ITessellator tessellator, PlayerEntity entity)
{
tessellator.PushTransform();
var origin = tessellator.Transform(Vector3.Zero);
tessellator.LoadIdentity();
tessellator.Scale(entity.Size, entity.Size);
tessellator.Translate(origin);
//tessellator.Translate(0.1f, 0.1f); // center on the current tile position
tessellator.Translate(entity.Position); // move to the entity's position
_playerTile.Render(tessellator);
tessellator.PopTransform();
}
private int[,] CalculateFieldOfView(ITessellator tessellator, Camera<OrthographicProjection> camera, PlayerEntity player, IChunkAccess chunk, int minX, int maxX, int minY, int maxY)
{
int[,] fovMap = new int[maxY - minY + 1, maxX - minX + 1];
var originX = player.Position.X + player.Size / 2.0f;
var originY = player.Position.Y + player.Size / 2.0f;
var considered = new List<Vector2I>();
//for (var angle = 0.0f; angle < 360.0f; angle += (9.0f - distance)) // hit more angles as you move further out
for (var angle = 0.0f; angle < 360.0f; angle += 1.0f)
{
for (var distance = 0.0f; distance < chunk.AmbientLightLevel * 2.0f; distance++)
{
var x = (int)Math.Floor(originX + distance * Math.Cos(OpenTK.MathHelper.DegreesToRadians(angle)));
var y = (int)Math.Floor(originY + distance * Math.Sin(OpenTK.MathHelper.DegreesToRadians(angle)));
var vector = new Vector2I(y - minY, x - minX);
if (!considered.Contains(vector))
{
considered.Add(vector);
if (CommonCore.Math.MathHelper.IsInRange(y - minY, 0, maxY - minY + 1) && CommonCore.Math.MathHelper.IsInRange(x - minX, 0, maxX - minX + 1))
{
//var alpha = (8.0f - distance) / 8.0f;
var alpha = 1.0f / Math.Pow((distance + 1) / chunk.AmbientLightLevel, 2);
fovMap[y - minY, x - minX] = OpenTK.MathHelper.Clamp((int)(fovMap[y - minY, x - minX] + alpha * 255.0f), 0, 255);
}
else
{
break;
}
}
if (chunk[ChunkLayer.Blocking, x, y] != 0)
{
break;
}
}
}
return fovMap;
}
public void Load(string filename)
{
Player = PlayerEntity.Load("adccda30-36f7-4574-ae18-9a2eb48fe271.player");
//Player = PlayerEntity.Load(Player);
var fileStream = new FileStream(filename, FileMode.Open);
var formatter = new BinaryFormatter();
try
{
// The player is not loaded from the level file.
Level = (Level)formatter.Deserialize(fileStream);
Level.AddEntity(Player);
Console.WriteLine($"Level loaded from '{filename}'.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
fileStream.Close();
}
}
private void GeneratePlayer()
{
Player = new PlayerEntity();
Player.Toolbelt.SetFirstCompatibleSlot(ItemStack.FromName("Pickaxe"));
Player.Toolbelt.SetFirstCompatibleSlot(ItemStack.FromName("Hoe"));
Player.Toolbelt.SetFirstCompatibleSlot(ItemStack.FromName("Wheat Seed", 64));
Player.Toolbelt.SetFirstCompatibleSlot(ItemStack.FromName("Grass", 64));
var spawnPoint = Level.GetChunk(Player).FindSpawnPoint();
if (!spawnPoint.HasValue)
{
throw new Exception("Unable to spawn the player.");
}
else
{
Player.MoveTo(Level, new Vector2(spawnPoint.Value.X, spawnPoint.Value.Y));
}
Level.GetChunk(Player).AddEntity(Player);
}
public static void Save(PlayerEntity player)
{
var fileStream = new FileStream(player.Filename, FileMode.Create);
var formatter = new BinaryFormatter();
try
{
formatter.Serialize(fileStream, player);
Console.WriteLine($"Player saved to '{player.Filename}'.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
fileStream.Close();
}
}
/// <summary>
/// Re-load the given player.
/// </summary>
public static PlayerEntity Load(PlayerEntity player)
{
return Load(player.Filename);
}