/// <summary>
/// Get texture rectangle for tile type
/// </summary>
/// <param name="level">Level object tile is bound to</param>
/// <param name="tile">Tile needed texture rect for</param>
/// <returns>Rectangle used to get texture data from sprite sheet</returns>
private Rectangle GetRect(Level level, Tile tile)
{
int offsetX = 0;
int offsetY = 0;
// Calculate offset in sprite sheet for the tile type
switch (tile.TileType)
{
case TileType.TILE_TYPE_WALL:
{
offsetX = 1;
}
break;
case TileType.TILE_TYPE_STORAGE:
{
offsetX = 4;
}
break;
case TileType.TILE_TYPE_BOX:
{
offsetX = 3;
// Check if the box stands on a storage tile
// then change to another type.
if (level.IsTrigger((int)tile.PositionX, (int)tile.PositionY))
{
offsetX = 2;
}
}
break;
case TileType.TILE_TYPE_START:
{
offsetX = 0;
offsetY = 1;
}
break;
case TileType.TILE_TYPE_FLOOR:
{
offsetX = 0;
}
break;
case TileType.TILE_TYPE_NONE:
default:
// First sprite is the empty
break;
}
// Create a rectangle for fetching texture data for this tile
Rectangle rc = new Rectangle(offsetX * m_tileSpriteWidth, offsetY * m_tileSpriteHeight, m_tileSpriteWidth, m_tileSpriteHeight);
return rc;
}
/// <summary>
/// Draw the level tiles
/// </summary>
/// <param name="level"></param>
public void DrawLevel(Level level, Player player)
{
// Calculate a new camera scale to fit the level to as much as possible of the screen
// using the viewport height and level height as reference
float newCameraScaleX = ((float)m_graphicsDevice.Viewport.Width) / ((float)(((float)level.Width + 1) * m_tileWidth * m_camera.Scale.X));
float newCameraScaleY = ((float)m_graphicsDevice.Viewport.Height) / ((float)(((float)level.Height + 1) * m_tileHeight * m_camera.Scale.Y));
float smallestScale = newCameraScaleX < newCameraScaleY ? newCameraScaleX : newCameraScaleY;
smallestScale = smallestScale > 1 ? 1 : smallestScale;
m_camera.SetScale(smallestScale, smallestScale);
// Translate camera to center on the level
float cameraX = (m_graphicsDevice.Viewport.Width / 2) - ((level.Width * m_tileWidth * m_camera.Scale.X) / 2);
float cameraY = (m_graphicsDevice.Viewport.Height / 2) - ((level.Height * m_tileHeight * m_camera.Scale.Y) / 2);
m_camera.Translate(cameraX, cameraY);
// Bind sprite batcher
m_spriteBatch.Begin( );
// Draw statical tiles
List<Tile> staticTiles = level.StaticTiles;
foreach (Tile tile in staticTiles)
{
DrawTile(level, tile);
}
// Draw moveable tiles
List<Tile> moveableTiles = level.MoveableTiles;
foreach (Tile tile in moveableTiles)
{
DrawTile(level, tile);
}
// Draw player tile
DrawPlayer(level, player);
// Unbind the sprite batcher
m_spriteBatch.End( );
// Reset camera scale
m_camera.SetScale(1, 1);
}
/// <summary>
/// Draw tile object
/// </summary>
/// <param name="level">Level object tile is bound to</param>
/// <param name="tile">Tile object</param>
private void DrawTile(Level level, Tile tile)
{
// Calculate the tile position
Vector2 tilePosition = m_camera.GetTranslatedPosition(new Vector2((((float)tile.PositionX)) * m_tileWidth, (((float)tile.PositionY)) * m_tileHeight));
Vector2 tileSize = new Vector2((m_tileWidth * m_camera.Scale.X), (m_tileHeight * m_camera.Scale.Y));
tileSize.X += 0.99f;
tileSize.Y += 0.99f;
// Get the source rectangle for the tile sprite in tile sheet
Rectangle srcRect = GetRect(level, tile);
// Create rectangle and draw it
Rectangle destRect = new Rectangle((int)tilePosition.X, (int)tilePosition.Y, (int)tileSize.X, (int)tileSize.Y);
m_spriteBatch.Draw(m_tileSheet, destRect, srcRect, Color.White);
}
public GameModel(Level level, IEventListener listener)
{
// Load our dummy level we use for debugging.
m_level = level;
// Create player object from player tile
m_player = new Player(m_level.PlayerTile);
// Set current time as start time
m_startTime = DateTime.Now;
// Save event listener
m_listener = listener;
}
