public override void Initialize()
{
_batch = new SpriteBatch(_device);
_primitiveBatch = new PrimitiveBatch(_batch);
_camera = new Camera();
_player = new Player();
_healthBar = new HealthBar();
}
public void Draw(GameTime gameTime, SpriteBatch batch, Camera camera)
{
var position = camera.Transform(_position);
if (_currentAnimation != null)
{
batch.Draw(_texture, position, _currentAnimation.GetCurrentFrame(),
Color.White, 0, Vector2.Zero, 1f, SpriteEffects.None, 0f);
}
}
public void Draw(GameTime gameTime, SpriteBatch batch, Camera camera)
{
// TODO: Should use a quad tree (or similar) here to reduce drawn entities.
// Draw the map and all entities.
for (int layerIndex = 0; layerIndex < _map.Layers.Length; layerIndex++)
{
_map.Draw(gameTime, batch, camera, _map.Layers[layerIndex]);
}
}
public void Draw(GameTime gameTime, SpriteBatch spriteBatch, Camera camera, Layer layer)
{
// Calculate the first visible cell index.
float cameraCellX = (int)camera.Position.X / 16;
float cameraCellY = (int)camera.Position.Y / 16;
var firstIndex = (int)cameraCellX + (_size.Width * (int)cameraCellY);
// Calculate stuff that we will need later.
var horizontalCells = camera.ScreenSize.Width / 16;
var verticalCells = camera.ScreenSize.Height / 16;
var mapCellCount = _size.Width * _size.Height;
for (var y = 0; y < verticalCells + 1; y++)
{
// How much should we increment the index position with?
var verticalIncrement = y * _size.Width;
for (var x = 0; x < horizontalCells + 1; x++)
{
var index = firstIndex + verticalIncrement + x;
if (index < 0)
{
continue;
}
if (index >= mapCellCount)
{
return;
}
if (layer.Tiles[index] != null)
{
var tx = index % _size.Width * 16;
var ty = index / _size.Width * 16;
var position = new Vector2(tx, ty);
position = camera.Transform(position);
// Get the source rectangle and the texture.
var sourceRectangle = layer.Tiles[index].GetRectangle();
var texture = layer.Tiles[index].Tileset.Texture;
// Draw the tile.
spriteBatch.Draw(texture, position, sourceRectangle, layer.Color);
}
}
}
}
public void Draw(GameTime gameTime, SpriteBatch batch, Camera camera)
{
_sprite.Draw(gameTime, batch, camera);
}
public virtual void Draw(GameTime gameTime, SpriteBatch batch, Camera camera)
{
}
