private void UpdatePosition(Vector2 velocity, GameTime gameTime)
{
Vector2 newPositionX = Position + new Vector2(velocity.X, 0) * (float)gameTime.ElapsedGameTime.TotalSeconds;
Vector2 newPositionY = Position + new Vector2(0, velocity.Y) * (float)gameTime.ElapsedGameTime.TotalSeconds;
List <Entity> collidables = world.GetCollidables(this);
bool moveX = true;
bool moveY = true;
foreach (Entity e in collidables)
{
if (e != this)
{
if (GetDrawRectangle(newPositionX).Intersects(e.GetDrawRectangle()))
{
moveX = false;
break;
}
if (GetDrawRectangle(newPositionY).Intersects(e.GetDrawRectangle()))
{
moveY = false;
break;
}
}
}
if (moveX || moveY)
{
TileMap map = world.GetMap();
int square = 3;
int startY = Math.Max(square, (int)(Position.Y / Globals.TILE_SIZE));
int startX = Math.Max(square, (int)(Position.X / Globals.TILE_SIZE));
for (int y = startY - square; y < startY + square; y++)
{
for (int x = startX - square; x < startX + square; x++)
{
if (map.GetLayer(1).GetTileAt(x, y) != 0)
{
Rectangle tileRect = new Rectangle(x * Globals.TILE_SIZE, y * Globals.TILE_SIZE, Globals.TILE_SIZE, Globals.TILE_SIZE);
if (GetDrawRectangle(newPositionX).Intersects(tileRect))
{
moveX = false;
break;
}
if (GetDrawRectangle(newPositionY).Intersects(tileRect))
{
moveY = false;
break;
}
}
}
}
}
Vector2 newPosition = Position;
if (moveX)
{
newPosition.X = newPositionX.X;
}
if (moveY)
{
newPosition.Y = newPositionY.Y;
}
Position = newPosition;
}