/// <summary>
/// Uses vector math to update the ship's location.
/// </summary>
/// <param name="shippyUpdate">Ship to be updated.</param>
/// <param name="starry">star for gravity</param>
private void updateShipLocation(ship shippyUpdate, star starry)
{
Vector2D gravity = starry.loc - shippyUpdate.loc; // Find the vector from the ship to the star.
gravity.Normalize(); // Turn the vector into a unit-length direction by normalizing.
gravity *= starry.mass; // Adjust strentth of vector by multiplying star's mass.
Vector2D thrust;
//We need to only do this thrus if the ship is thrusting, otherwise the star will only have the impact on the ship
if (shippyUpdate.getThrust() == true)
{
thrust = shippyUpdate.GetDirections(); // So long as rotate is only ever applied, should always be normalized.
thrust = thrust * (engineStrength); // Adjust the length of the vector by multiplying by the engine strength.
shippyUpdate.setThrust(false);
}
else
{
thrust = new Vector2D(0, 0); // no thrust for you.
}
Vector2D acceleration = gravity + thrust; // combine all forces.
shippyUpdate.velocity += acceleration; // Add acceleration to velocity.
shippyUpdate.loc = shippyUpdate.loc + shippyUpdate.velocity; // Apply new velocity to position.
checkIfOffScreen(shippyUpdate); // Wraparound if offscreen.
}
public void GetDirectionY()
{
World world = new World();
Socket socket;
IPAddress ip;
networking.MakeSocket("localhost", out socket, out ip);
SocketState ss = new SocketState(socket);
ship sh = new ship(1, ss, 5, new Vector2D(8, 8), "JoCee", 0, new Vector2D(8, 9), 7);
Assert.AreEqual(sh.GetDirections().GetY(), 9);
}
// This method is invoked when the DrawingPanel needs to be re-drawn
/// <summary>
/// Draws all the players, stars and projectiles each time the form is invalidated.
/// The lock is used so cross-threads can't screw it up!
/// </summary>
/// <param name="e"></param>
protected override void OnPaint(PaintEventArgs e)
{
// Draw the players
// Draw the stars
// Draw the projectiles.
lock (world)
{
foreach (var shipper in world.playersInWorld.ToList())
{
ship p = shipper.Value as ship;
if (p.hp > 0) // If the HP is above zero, the ship deserves to be drawn.
{
DrawObjectWithTransform(e, p, world.worldPanel.Size.Width, p.GetLocation().GetX(), p.GetLocation().GetY(), p.GetDirections().ToAngle(), shipDrawer);
}
}
foreach (var starry in world.starsInWorld.ToList())
{
star p = starry.Value as star;
DrawObjectWithTransform(e, p, world.worldPanel.Size.Width, p.GetLocation().GetX(), p.GetLocation().GetY(), 0, starDrawer);
}
foreach (var proj in world.projectilesInWorld.ToList())
{
projectile p = proj.Value as projectile;
if (p.alive == true)
{
DrawObjectWithTransform(e, p, world.worldPanel.Size.Width, p.GetLocation().GetX(), p.GetLocation().GetY(), p.GetDirections().ToAngle(), projectileDrawer);
}
else // If it's dead, can be removed from the projectile list.
{
world.projectilesInWorld.Remove(p.ID);
}
}
}
// Do anything that Panel (from which we inherit) needs to do
base.OnPaint(e);
}