/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// IO events start
Random random = new Random();
KeyboardState lastKeyboardState = KeyboardState;
KeyboardState = Keyboard.GetState();
MouseState lastMouseState = MouseState;
MouseState = Mouse.GetState();
MousePos.X = MouseState.X;
MousePos.Y = MouseState.Y;
CursorMapPos = coordinateConverter.ScreenToMap(MousePos, DisplayShift);
if (KeyboardState.IsKeyDown(Keys.Right))
{
DisplayShift.X -= 5;
}
if (KeyboardState.IsKeyDown(Keys.Left))
{
DisplayShift.X += 5;
}
if (KeyboardState.IsKeyDown(Keys.Up))
{
DisplayShift.Y += 5;
}
if (KeyboardState.IsKeyDown(Keys.Down))
{
DisplayShift.Y -= 5;
}
if (KeyboardState.IsKeyDown(Keys.Escape))
{
Exit();
}
if (KeyboardState.IsKeyUp(Keys.P) &&
lastKeyboardState.IsKeyDown(Keys.P))
{
DisplayPaths = !DisplayPaths;
}
if (KeyboardState.IsKeyUp(Keys.S) &&
lastKeyboardState.IsKeyDown(Keys.S))
{
DisplayScore = !DisplayScore;
}
if (MouseState.LeftButton == ButtonState.Released &&
lastMouseState.LeftButton == ButtonState.Pressed)
{
Point mapCoords = coordinateConverter.ScreenToMap(MousePos, DisplayShift);
if (gameMap.IsPointInside(mapCoords) &&
gameMap.game_tiles[(int)mapCoords.Y, (int)mapCoords.X].IsPathable())
{
LumberCamp newLumberCamp = new LumberCamp(mapCoords);
gameMap.game_tiles[(int)mapCoords.Y, (int)mapCoords.X].Building = newLumberCamp;
gameMap.GetBuildings().Add(newLumberCamp);
List <Point> validNeighbors = gameMap.GetValidNeighbors(mapCoords);
List <Point> spawnableNeighbors = new List <Point>();
foreach (Point validNeighbor in validNeighbors)
{
if (gameMap.game_tiles[(int)validNeighbor.Y, (int)validNeighbor.X].IsPathable())
{
spawnableNeighbors.Add(validNeighbor);
}
}
for (int x = 0; x < 3; x++)
{
Point spawnTile = spawnableNeighbors[random.Next(spawnableNeighbors.Count)];
Laborer newLaborer = new Laborer(spawnTile);
gameMap.GetUnits().Add(newLaborer);
GameTile theTile = gameMap.game_tiles[(int)spawnTile.Y, (int)spawnTile.X];
theTile.Unit = newLaborer;
}
}
}
// IO events end
// game logic start
List <Entity> expiredEntities = new List <Entity>();
foreach (Unit unitObject in gameMap.GetUnits())
{
unitObject.Tick(gameMap, Player1, pathfinder);
}
foreach (Terrain terrainObject in gameMap.GetTerrain())
{
terrainObject.Tick(gameMap, Player1, pathfinder);
if (terrainObject.IsExpired())
{
expiredEntities.Add(terrainObject);
}
}
foreach (Entity entityObject in expiredEntities)
{
entityObject.OnDeath(gameMap);
gameMap.GetTerrain().Remove(entityObject);
gameMap.GetBuildings().Remove(entityObject);
}
// game logic ends
base.Update(gameTime);
}
public override void OnDeath(GameMap gameMap)
{
Stump newStump = new Stump(coordinates);
gameMap.GetTerrain().Add(newStump);
}