public void Update(FrameEventArgs e)
{
var dt = e.Time;
//Space.Update(dt);
PhysicsWorld.Step((float)dt);
// If nothing is listening for an event it will be null
if (OnUpdate != null)
{
OnUpdate(this, e);
}
foreach (var act in ActorsToAdd)
{
ImmediateAddActor(act);
}
foreach (var act in ActorsToRemove)
{
ImmediateRemoveActor(act);
}
ActorsToAdd.Clear();
ActorsToRemove.Clear();
//emit.Update(dt, grp);
//cont.Update(dt, grp);
}
public void ChangeCentroidTest0()
{
Scene scene = new Scene();
FloatPortal portal0 = new FloatPortal(scene);
FloatPortal portal1 = new FloatPortal(scene);
portal0.SetTransform(new Transform2(new Vector2(0, 0), 1, (float)Math.PI / 2));
portal1.SetTransform(new Transform2(new Vector2(10, 0), 2, (float)Math.PI / 2));
Portal.SetLinked(portal0, portal1);
PortalCommon.UpdateWorldTransform(scene);
World world = new World(new Xna.Vector2(0, 0f));
Body body0 = Factory.CreateBox(world, new Vector2(1, 2));
Body body1 = Factory.CreateBox(world, new Vector2(1, 2));
Xna.Vector2 startPos = new Xna.Vector2(0, 1);
body0.Position = startPos;
body1.Position = startPos;
Portal.Enter(portal0, body1);
PortalJoint portalJoint = Factory.CreatePortalJoint(world, body0, body1, portal0);
for (int i = 0; i < 10; i++)
{
body0.LocalCenter += new Xna.Vector2(0, 0.1f);
body1.LocalCenter += new Xna.Vector2(0, 0.1f);
world.Step(1 / (float)60);
Assert.IsTrue(body0.Position == startPos);
}
}
/// <summary>
/// Runs a single simulation step in the physics engine and syncs the state of the physics bodies back to the given world.
/// </summary>
public void PhysicsStep(World.World worldState, float elapsedSeconds)
{
// Update the physics world
PhysicsWorld.Step(elapsedSeconds);
worldState.Water.Step(worldState, elapsedSeconds);
bool useCustomGravity = worldState.StaticGeometry.HasGravityPoint;
Vector2 gravityPoint = worldState.StaticGeometry.GravityPoint;
// Sync back the positions and velocities
foreach (var e in worldState.Entities)
{
var body = e.PhysicsBody;
if (e.PhysicsBody == null || e.Disposed)
{
continue;
}
// Manually apply gravity
if (useCustomGravity)
{
body.ApplyForce(9.81f * Vector2.Normalize(gravityPoint - body.Position) * body.Mass);
}
else
{
body.ApplyForce(9.81f * new Vector2(0, -1) * body.Mass);
}
e.Position = body.Position;
e.Velocity = body.LinearVelocity;
if (e is Ball)
{
float eps = 0.01f;
if (e.Velocity.X > eps)
{
e.Rotation = (float)Math.PI * 0.5f;
}
else if (e.Velocity.X < -eps)
{
e.Rotation = -(float)Math.PI * 0.5f;
}
}
}
}
/// <summary>
/// Called once per frame.
/// </summary>
public void UpdateStep(double worldStep)
{
// Update world simulation. (cap min update to 60fps)
World.Step((float)worldStep);
}
public void PortalJointTest1()
{
Scene scene = new Scene();
FloatPortal portal0 = new FloatPortal(scene);
FloatPortal portal1 = new FloatPortal(scene);
portal0.SetTransform(new Transform2(new Vector2(), 1, 0, true));
portal1.SetTransform(new Transform2(new Vector2(10, 0), 1, 0));
portal0.Linked = portal1;
portal1.Linked = portal0;
PortalCommon.UpdateWorldTransform(scene);
World world = new World(new Xna.Vector2(0, 0f));
Body body0 = Factory.CreateBox(world, new Vector2(1, 2));
Body body1 = Factory.CreateBox(world, new Vector2(1, 2));
Portal.Enter(portal0, body1);
PortalJoint portalJoint = Factory.CreatePortalJoint(world, body0, body1, portal0);
world.Step(1 / (float)60);
AssertPortalJoint(body0, body1, portal0);
}
void IWorld.Step(float deltaTime) => _world.Step(deltaTime);
static void Main()
{
window = new RenderWindow(new VideoMode(1280, 720), "", Styles.Close);
window.SetFramerateLimit(60);
window.Closed += (sender, eventArgs) => window.Close();
shipTex = new Texture("Ship.png");
asteroidTex = new Texture("Asteroid.png");
var shipSpr = new Sprite(shipTex);
shipSpr.Origin = new Vector2f(shipTex.Size.X / 2f, shipTex.Size.Y / 2f);
var asteroidSpr = new Sprite(asteroidTex);
asteroidSpr.Origin = new Vector2f(asteroidTex.Size.X / 2f, asteroidTex.Size.Y / 2f);
world = new World(new Vector2(0, 0));
var debugView = new SFMLDebugView(world);
debugView.AppendFlags(DebugViewFlags.Shape);
CreateBounds(20, 11.25f);
var ship = CreateShip();
ship.Position = new Vector2(3, 1);
ship.Rotation = 1.7f;
var ship2 = CreateShip();
ship2.Position = new Vector2(3, 1);
ship2.Rotation = 1.7f;
var asteroid = CreateAsteroid();
asteroid.Position = new Vector2(4, 4);
window.KeyPressed += (sender, eventArgs) =>
{
if (eventArgs.Code == Keyboard.Key.Space)
{
CreateBullets(ship);
}
};
while (window.IsOpen())
{
window.DispatchEvents();
if (Keyboard.IsKeyPressed(Keyboard.Key.W))
{
ship.ApplyForce(ship.GetWorldVector(new Vector2(0.0f, -25.0f)));
}
if (Keyboard.IsKeyPressed(Keyboard.Key.S))
{
ship.ApplyForce(ship.GetWorldVector(new Vector2(0.0f, 25.0f)));
}
if (Keyboard.IsKeyPressed(Keyboard.Key.A))
{
ship.ApplyTorque(-10);
}
if (Keyboard.IsKeyPressed(Keyboard.Key.D))
{
ship.ApplyTorque(10);
}
world.Step(1f / 60);
window.Clear(Color.Black);
shipSpr.Position = new Vector2f(ship.Position.X * 64, ship.Position.Y * 64);
shipSpr.Rotation = (ship.Rotation * (180 / (float)Math.PI));
window.Draw(shipSpr);
asteroidSpr.Position = new Vector2f(asteroid.Position.X * 64, asteroid.Position.Y * 64);
asteroidSpr.Rotation = (asteroid.Rotation * (180 / (float)Math.PI));
window.Draw(asteroidSpr);
var start = ship.Position;
var step = (float)(2 * Math.PI) / 200;
byte col = 0;
var line = new VertexArray(PrimitiveType.Lines, 2);
line[0] = new Vertex(new Vector2f(start.X * 64, start.Y * 64), Color.White);
for (var dir = 0f; dir <= 2 * Math.PI; dir += step)
{
float min = 100;
byte res = 255;
var point = start + LengthDir(dir, 20);
world.RayCast((f, p, n, fr) =>
{
if (fr > min)
return 1;
min = fr;
res = (byte)(fr * 255);
point = p;
return fr;
}, start, point);
line[0] = new Vertex(new Vector2f(start.X * 64, start.Y * 64), new Color(col, 0, 0));
line[1] = new Vertex(new Vector2f(point.X * 64, point.Y * 64), new Color(col, 0, 0));
window.Draw(line);
col++;
}
debugView.Draw(window);
window.Display();
}
}
/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
mines = new List<Mine>();
explosions = new List<Explosion>();
weaponCharges = new List<IPowerup>();
bombs = new List<Bomb>();
world = new World(new Vector2(0.0f, -20f));
PrimitiveDrawing.SetUp(this.world);
//FarseerPhysics.Settings.EnableDiagnostics = false;
FarseerPhysics.Settings.MaxPolygonVertices = 30;
highScore = 20; //TODO
world.Clear();
shielded = false;
botherBall = null;
speedTimer = 0;
timeSinceStart = 0;
touchedGround = true;
score = 0;
ball = BodyFactory.CreateCircle(world, 1.5f, 1f, new Vector2(0.0f, 3f), ballColor);
ball.BodyType = BodyType.Dynamic;
ball.Friction = 10;
floorBody = new Body(world)
{
BodyType = BodyType.Static,
Position = Vector2.Zero,
FixedRotation = true
};
currentFloorLength = 0;
BodyFactory.CreateRectangle(world, 4f, (float)(1706665.0 / 512.0), 1f, new Vector2(-35.4333f, ball.Position.Y), Color.Black).Friction = 0.0f;
BodyFactory.CreateRectangle(world, 4f, (float)(1706665.0 / 512.0), 1f, new Vector2(35.3333f, ball.Position.Y), Color.Black).Friction = 0.0f;
highScoreLine = BodyFactory.CreateRectangle(
world,
66.6666f,
(float)(66.6666030883789 / (double)this.GraphicsDevice.Viewport.AspectRatio / 40.0),
1f,
new Vector2(0.0f, (float)(-this.highScore - 66.6666030883789 / (double)this.GraphicsDevice.Viewport.AspectRatio / 80.0)),
Color.Red
);
highScoreLine.IsStatic = true;
highScoreLine.IsSensor = true;
ball.OnCollision += Ball_OnCollision;
world.Step(1000);
base.Initialize();
}
internal void Update(GameTime gameTime)
{
// http://weblogs.asp.net/bsimser/farseer-tutorial-for-the-absolute-beginners
_farseerWorld.Step(Math.Min((float)gameTime.ElapsedGameTime.TotalMilliseconds * 0.001f, (1f / 30f)));
}