public void Open(DemoOpenInfo demoInfo)
{
this.window = demoInfo.Window;
this.viewport = demoInfo.Viewport;
this.scene = demoInfo.Scene;
this.demoInfo = demoInfo;
Open();
}
/// <summary>
/// Call this to start the demo
/// (Entry Point)
/// </summary>
public static void Run()
{
//do this becuase .Net has been erroring with file permissions
//just leave this line it.
string dir = Settings.DataDir;
//create a new window to display stuff
Window window = new Window(new System.Drawing.Size(1000, 750));
window.Title = "Physics2D.Net Demo";
//Create a new Scene
Scene scene = new Scene();
//Get the scene's physics engine
PhysicsEngine physicsEngine = scene.Engine;
//initialize the engine
physicsEngine.BroadPhase = new Physics2DDotNet.Detectors.SweepAndPruneDetector();
//physicsEngine.BroadPhase = new Physics2DDotNet.Detectors.SpatialHashDetector();
Physics2DDotNet.Solvers.SequentialImpulsesSolver solver= new Physics2DDotNet.Solvers.SequentialImpulsesSolver();
//solver.Iterations = 3;
solver.Freezing = true;
physicsEngine.Solver = solver;
//physicsEngine.Solver = new Physics2DDotNet.Solvers.Box2DSolver();
Viewport viewport = new Viewport(
new Rectangle(0, 0, window.Size.Width, window.Size.Height), //where
Matrix2x3.Identity, //how
scene, //who
new Lifespan()); // how long
window.AddViewport(viewport);
// you can change the veiwport via this
viewport.ToScreen = Matrix2x3.FromTransformation(.09f, new Vector2D(40, 0));
//make it so the veiwport will be resized whn the window is
window.Resized += delegate(object sender, SizeEventArgs e)
{
viewport.Width = e.Width;
viewport.Height = e.Height;
};
System.Windows.Forms.Application.EnableVisualStyles();
//create the GUI
DemoSelector selector = new DemoSelector();
//initialize the GUI
selector.Initialize(window, viewport, scene);
//Create the window
window.Intialize();
window.DrawingInterval = .02f;
//Add some intro text
AddIntroText(window, viewport, scene);
SetupStatus(window, scene);
//Show the GUI
selector.Show();
//start the physicstimer for Layer.PhysicsEngine
scene.Timer.IsRunning = true;
//Begin the rendering loop.
window.Run();
return;
}
private static void DoBodyCount(Window window, Viewport viewport2, Scene scene1, Scene scene2, Vector2D pos)
{
List<Body> bodies = DemoHelper.AddText(new DemoOpenInfo(window, viewport2, scene2), "Bodies: 000000", pos,20);
foreach (Body body in bodies)
{
SpriteDrawable s = body.Shape.Tag as SpriteDrawable;
s.Color = new ScalarColor4(.1f, .1f, 1, 1);
}
bodies.RemoveRange(0, 7);
Vector2D[] positions = new Vector2D[bodies.Count];
for (int index = 0; index < positions.Length; index++)
{
positions[index] = bodies[index].State.Position.Linear - numbers2[0].Offset;
}
EventHandler<CollectionEventArgs<Body>> handler = delegate(object sender, CollectionEventArgs<Body> e)
{
string val = scene1.Engine.Bodies.Count.ToString();
SetBodiesText(bodies, positions, val);
};
scene1.Engine.BodiesAdded += handler;
scene1.Engine.BodiesRemoved += handler;
}
private static void DoFPS(Window window, Viewport viewport2, Scene scene1, Scene scene2, Vector2D pos)
{
List<Body> bodies = DemoHelper.AddText(new DemoOpenInfo(window, viewport2, scene2), "FPS: 000", pos,20);
foreach (Body body in bodies)
{
SpriteDrawable s = body.Shape.Tag as SpriteDrawable;
s.Color = new ScalarColor4(.1f, .1f, 1, 1);
}
bodies.RemoveRange(0, 4);
Vector2D[] positions = new Vector2D[bodies.Count];
for (int index = 0; index < positions.Length; index++)
{
positions[index] = bodies[index].State.Position.Linear - numbers2[0].Offset;
}
int frames = 100;
Scalar frameSeconds = 1;
viewport2.BeginDrawing += delegate(object sender, DrawEventArgs e)
{
if (frames >= 10)
{
frames /= 2;
frameSeconds /= 2;
}
frames++;
frameSeconds += e.DrawInfo.TrueDt;
int ups = (int)(frames / frameSeconds);
if (ups < 0) { ups = 0; }
string val = ups.ToString();
SetBodiesText(bodies, positions, val);
};
}
/// <summary>
/// creates a overlay scene to display status text.
/// </summary>
/// <param name="window"></param>
/// <param name="scene"></param>
private static void SetupStatus(Window window, Scene scene)
{
Scene scene2 = new Scene();
PhysicsEngine physicsEngine2 = scene2.Engine;
physicsEngine2.BroadPhase = new Physics2DDotNet.Detectors.SelectiveSweepDetector();
//physicsEngine.BroadPhase = new Physics2DDotNet.Detectors.SpatialHashDetector();
Physics2DDotNet.Solvers.SequentialImpulsesSolver solver = new Physics2DDotNet.Solvers.SequentialImpulsesSolver();
solver.Iterations = 1;
physicsEngine2.Solver = solver;
Viewport viewport2 = new Viewport(
new Rectangle(0, 0, window.Size.Width, window.Size.Height), //where
Matrix2x3.Identity, //how
scene2, //who
new Lifespan()); // how long
window.AddViewport(viewport2);
window.Resized += delegate(object sender, SizeEventArgs e)
{
viewport2.Width = e.Width;
viewport2.Height = e.Height;
};
numbers = new IShape[10];
numbers2 = new SurfacePolygons[10];
for (int index = 0; index < numbers.Length; ++index)
{
numbers2[index] = Cache<SurfacePolygons>.GetItem(numberString[index] + "|FreeSans.ttf:20", Color.Black);
numbers[index] = ShapeFactory.CreateSprite(numbers2[index], 0, 8, 2);
SpriteDrawable s = numbers[index].Tag as SpriteDrawable;
s.Color = new ScalarColor4(.1f, .1f, 1, 1);
}
DoBodyCount(window, viewport2, scene, scene2, new Vector2D(100, 2));
DoJointCount(window, viewport2, scene, scene2, new Vector2D(100, 30));
DoLogicsCount(window, viewport2, scene, scene2, new Vector2D(270, 2));
DoFPS(window, viewport2, scene, scene2, new Vector2D(2, 2));
DoUPS(window, viewport2, scene, scene2, new Vector2D(2, 30));
}
private static void AddIntroText(Window window, Viewport viewport, Scene scene)
{
DemoHelper.AddText(
new DemoOpenInfo(window, viewport, scene),
@"WELCOME TO THE PHYSICS2D.NET DEMO.
PLEASE ENJOY MESSING WITH IT.
A LOT OF HARD WORK WENT INTO IT,
SO THAT YOU COULD ENJOY IT.
PLEASE SEND FEEDBACK.
EACH CHARACTER HERE IS AN
ACTUAL BODY IN THE ENGINE.
THIS IS TO SHOW OFF THE BITMAP
TO POLYGON ALGORITHM.
LOAD THE INTRO TEXT DEMO TO MANIPULATE
THIS TEXT.", new Vector2D(20, 20), 40);
}
public DemoOpenInfo(Window window, Viewport viewport, Scene scene)
{
this.window = window;
this.viewport = viewport;
this.scene = scene;
}