public void SetState(string a_name, GameState a_state)
{
_avaliableStates[a_name] = a_state;
}
//**********************************************************************
//****************************** UPDATE ********************************
//**********************************************************************
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
// Check: Is the game not running?
if (currentState != GameState.RunningGame)
UpdateSplashScreen();
else
{
// THINGS TO DO WHILE GAME IS RUNNING
k = Keyboard.GetState();
dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
// Check: Exit game?
if (k.IsKeyDown(Keys.Escape)) currentState = GameState.EndScreen;
// Check: Is player alive?
if (!thePlayer.IsAlive)
{
finalScore = currentScore;
ResetGame();
}
// PROJECTILE CONTROLS
// Firing missiles: delay time between fires
if (missileCountdown > 0)
{
missileCountdown -= 0.0075f * dt;
}
else if (k.IsKeyDown(missileButton) && missileCountdown <= 0)
{
FireMissile();
missileCountdown = 50;
}
// Dropping bombs: delay time between drops
if (bombCountdown > 0)
{
bombCountdown -= 0.005f * dt;
}
else if (k.IsKeyDown(bombButton) && bombCountdown <= 0)
{
DropBomb();
bombCountdown = 50;
}
// ----------------------------------------------------------------
// COLLISION HANDLING
// ----------------------------------------------------------------
// Missile-> Enemy collision handling
foreach (PlayerMissile m in PlayerMissiles)
{
// Check if off-screen
if (m.posX > borderRightX) m.Die();
foreach (Enemy e in Enemies)
{
// Logic
if (m.HitsEnemy(e))
{
e.Die();
m.Die();
currentScore += e.pointValue;
}
}
return;
}
// BombExplosion-> Enemy collision handling
foreach (BombExplosion be in BombExplosions)
{
foreach (Enemy e in Enemies)
{
// Logic
if (be.CollideWithEnemy(e))
{
e.Die();
currentScore += e.pointValue * 2 / 3;
}
}
return;
}
// Enemy-> Player collision handling
foreach (Enemy e in Enemies)
{
// Check if off-screen
if (e.posX < borderLeftX) e.Die();
// Collision with player?
if (e.CollideWithPlayer())
{
e.Die();
thePlayer.Damage(20);
currentScore += e.pointValue / 5;
}
return;
// Attack logic?
}
// EnemyBullet-> Player collision handling
foreach (EnemyBullet eb in EnemyBullets)
{
// Check if off-screen
if (eb.posX < borderLeftX) eb.Die();
else if (eb.posX > borderRightX) eb.Die();
// Collision with player?
if (eb.HitsPlayer(thePlayer))
{
eb.Die();
thePlayer.Damage(10);
}
return;
}
// ----------------------------------------------------------------
// Enemy generation
// ----------------------------------------------------------------
// ----------------------------------------------------------------
}
base.Update(gameTime);
}
private void UpdateSplashScreen()
{
KeyboardState keyState = Keyboard.GetState();
if (keyState.IsKeyDown(Keys.Enter))
{
currentState = GameState.RunningGame;
}
}
// Reset the game
public void ResetGame()
{
Enemies.Clear();
EnemyBullets.Clear();
PlayerMissiles.Clear();
PlayerBombs.Clear();
BombExplosions.Clear();
currentScore = 0;
thePlayer.Health = 100;
thePlayer.IsAlive = true;
thePlayer.Position = playerstart;
currentState = GameState.EndScreen;
}