protected override void Update(GameTime gameTime)
{
if (!sound && music.State == SoundState.Playing)
{
music.Stop();
}
else if (sound && music.State != SoundState.Playing)
{
music.Play();
}
if (prevKeyboard != null && Keyboard.GetState().IsKeyDown(Keys.Escape) && prevKeyboard.IsKeyUp(Keys.Escape))
{
if (battlefield == null)
{
Exit();
}
else
{
battlefield = null;
}
}
MouseState mouse = Mouse.GetState();
if (battlefield != null)
{
battlefield.update();
}
else
{
menuTime++;
if (menuTime >= 1200)
{
menuTime = 0;
}
if (prevMouseState != null && prevMouseState.LeftButton == ButtonState.Released && mouse.LeftButton == ButtonState.Pressed)
{
if (mouse.X / 2 >= 40 && mouse.Y / 2 >= 72 && mouse.X / 2 < 328 && mouse.Y / 2 < 92)
{
battlefield = new Battlefield();
}
else if (mouse.X / 2 >= 8 && mouse.Y / 2 >= 100 && mouse.X / 2 < 176 && mouse.Y / 2 < 120)
{
sound = !sound;
}
else if (mouse.X / 2 >= 192 && mouse.Y / 2 >= 100 && mouse.X / 2 < 360 && mouse.Y / 2 < 120)
{
Exit();
}
}
else
{
for (int i = 0; i < fakeEnemies.Count; ++i)
{
fakeEnemies[i].position += fakeEnemies[i].velocity;
if (fakeEnemies[i].position.Y <= 8 && fakeEnemies[i].velocity.Y < 0)
{
fakeEnemies[i].velocity.Y = -fakeEnemies[i].velocity.Y;
}
else if (fakeEnemies[i].position.Y >= 52 && fakeEnemies[i].velocity.Y > 0)
{
fakeEnemies[i].velocity.Y = -fakeEnemies[i].velocity.Y;
}
else if (fakeEnemies[i].position.X <= 8 && fakeEnemies[i].velocity.X < 0)
{
fakeEnemies[i].velocity.X = -fakeEnemies[i].velocity.X;
}
else if (fakeEnemies[i].position.X >= 348 && fakeEnemies[i].velocity.X > 0)
{
fakeEnemies[i].velocity.X = -fakeEnemies[i].velocity.X;
}
else
{
double direction = Math.Atan2(fakeEnemies[i].acceleration.Y, fakeEnemies[i].acceleration.X);
double newDirection = direction - 0.1 + Battlefield.rand.NextDouble() * 0.2;
double newLength = -0.1 + Battlefield.rand.NextDouble() * 0.2;
fakeEnemies[i].acceleration = new Vector2((float)(newLength * Math.Cos(newDirection)), (float)(newLength * Math.Sin(newDirection)));
fakeEnemies[i].velocity += fakeEnemies[i].acceleration;
}
}
}
}
prevKeyboard = Keyboard.GetState();
prevMouseState = mouse;
base.Update(gameTime);
}
