public static Point GetNewBlockPoint(SnakePlayer player)
{
Point result = new Point();
SnakeDirection dir = player.Body.Blocks.Count > 0 ? player.Body.Blocks.Last().Direction : player.Direction;
Point lastPos = player.Body.Blocks.Count > 0 ? player.Body.Blocks.Last().Position : player.Head.Position;
switch (dir)
{
case SnakeDirection.Up:
result = new Point(lastPos.X, lastPos.Y + 1);
break;
case SnakeDirection.Right:
result = new Point(lastPos.X - 1, lastPos.Y);
break;
case SnakeDirection.Down:
result = new Point(lastPos.X, lastPos.Y - 1);
break;
case SnakeDirection.Left:
result = new Point(lastPos.X + 1, lastPos.Y);
break;
default:
break;
}
return result;
}
public SnakePlayer BuildSnake()
{
SnakePlayer player = new SnakePlayer(ScreenManager);
player.Speed = 50f;
player.Direction = SnakeDirection.Down;
player.PreviousDirection = SnakeDirection.Down;
player.Name = "Default";
player.Head = new SnakeHead(new Point(5, 5));
player.Head.Texture = Content.Load<Texture2D>("snakehead");
player.Head.Source = player.Head.Texture.Bounds;
player.Body = new SnakeBody();
player.Body.Texture = Content.Load<Texture2D>("snakeblock");
player.Body.Source = player.Body.Texture.Bounds;
for (int i = 0; i < 5; i++)
{
player.AddSnakeBlock();
}
return player;
}
private void UpdatePlayer(GameTime gameTime, SnakePlayer player)
{
player.Update(gameTime);
if (player.Head.Position.Y > map.Height - 1 ||
player.Head.Position.X > map.Width - 1 ||
player.Head.Position.Y < 0 ||
player.Head.Position.X < 0)
{
switch (player.Direction)
{
case SnakeDirection.Up:
player.Head.Position = new Point(player.Head.Position.X, map.Height - 1);
break;
case SnakeDirection.Right:
player.Head.Position = new Point(0, player.Head.Position.Y);
break;
case SnakeDirection.Down:
player.Head.Position = new Point(player.Head.Position.X, 0);
break;
case SnakeDirection.Left:
player.Head.Position = new Point(map.Width - 1, player.Head.Position.Y);
break;
default:
break;
}
//worldReset = true;
}
MapCell currentCell = map.Cells[player.Head.Position.Y * map.Width + player.Head.Position.X];
Tile currentTile = null;
int currentX = player.Head.Position.X;
int currentY = player.Head.Position.Y;
if (currentX > 0 && currentX < tiledMap.Width - 1 && currentY > 0 && currentY < tiledMap.Height)
{
if (tiledMap.TileLayers["Environment"].Tiles[currentX][currentY] != null)
currentTile = tiledMap.SourceTiles[tiledMap.TileLayers["Environment"].Tiles[currentX][currentY].SourceID];
}
else
{
currentTile = null;
}
if (currentTile != null && currentTile.Properties.Count > 0 && currentTile.Properties.Keys.Contains("Col"))
{
PlayerEnvironmentCollision(player);
}
if (currentTile != null && currentTile.Properties.Count > 0 && currentTile.Properties.Keys.Contains("Wall"))
{
if(!worldReset)
worldReset = true;
}
if (currentCell != null && currentCell.ContainsPickup)
{
PickupFood(player, currentCell);
}
if (HasPlayerHitSelf(player))
{
if (!worldReset)
worldReset = true;
}
}
private void PlayerEnvironmentCollision(SnakePlayer player)
{
if (player.Body.Blocks.Count > 4)
{
if (!refreshHitCells)
{
int limit = player.Body.Blocks.Count - 5;
for (int i = player.Body.Blocks.Count - 1; i > limit; i--)
{
player.Body.Blocks.RemoveAt(i);
player.Score -= 40;
}
refreshHitCells = true;
}
}
else
{
if (!worldReset)
worldReset = true;
}
}
private void PickupFood(SnakePlayer player, MapCell currentCell)
{
particleSys.CreatePlayerExplosion(SnakeHelper.MapToScreen(
player.Head.Position,
ScreenManager.Game.Content.Load<Texture2D>("smoke"),
ScreenManager.Game.GraphicsDevice));
player.Score += currentCell.Pickup.PointsValue;
player.AddSnakeBlock();
player.Speed += 5;
currentCell.Pickup = null;
currentCell.ContainsPickup = false;
map.FoodCount--;
player.TotalFoodCollected++;
}
private bool HasPlayerHitSelf(SnakePlayer player)
{
foreach (var block in player.Body.Blocks)
{
if (block.Position == player.Head.Position)
{
return true;
}
}
return false;
}