private void SetupColliders()
{
float delta = 0.03f;
float space = 0.01f;
float distance2 = space / 2;
float size = delta - space;
int i = 0;
for (float x = -0.9f; x < 0.9f; x += delta)
{
for (float y = -0.9f; y < 0.9f; y += delta)
{
var collider = new Collider(x, y, size, size)
{
Velocity = RandomVectors.Velocity()
};
colliders.Add(collider);
++i;
}
}
float scale = 2f;
collisionGrid = new CollisionGrid(windowBorders, size * scale, size * scale);
collisionGridCenter = new CollisionGridCenter(windowBorders, size * scale, size * scale);
}
public static HashSet <(ICollider, ICollider)> FindAllCollisions(this CollisionGrid <ICollider> collisionGrid, IColliderProvider scene)
{
var result = new HashSet <(ICollider, ICollider)>();
collisionGrid.Clear();
foreach (var collider in scene.Collider)
{
collisionGrid.Add(collider);
}
collisionGrid.FindAllCollisions((c1, c2) => CollisionDetection.ExactCollision(result, c1, c2));
return(result);
}
public CollisionAlgoDebug()
{
collisionGrid = new CollisionGrid <ICollider>(-1f, -1f, 2f, 2f, 32, 32);
result = new HashSet <(ICollider, ICollider)>();
}
private static void Main(string[] _)
{
var size = (uint)(VideoMode.DesktopMode.Height * 0.8f);
var gameWindow = new GameWindow(GameWindowSettings.Default, new NativeWindowSettings {
Profile = ContextProfile.Compatability
})
{
IsVisible = false
};
// required before RenderWindow construction for OpenGL use
var window = new RenderWindow(new VideoMode(size, size), "Collision Grid");
window.Closed += (_1, _2) => window.Close();
window.SetKeyRepeatEnabled(false);
window.SetVerticalSyncEnabled(true);
var scene = new SceneAdapter(8000, 0.007f, 0.004f);
var parameters = new Parameters();
var collisionDetection = new CollisionDetection(scene);
scene.OnChange += (_1, _2) => collisionDetection.Update();
var style = new LightStyle();
var ui = new Ui(window, style);
void RecreateUi()
{
ui.Clear();
ui.AddPropertyGrid(parameters);
ui.AddPropertyGrid(scene);
ui.AddPropertyGrid(collisionDetection);
if (collisionDetection.Algorithm is ICollisionGrid <ICollider> collGrid)
{
foreach (var grid in collGrid.Grids.Reverse())
{
ui.AddCountGrid(grid);
}
}
}
RecreateUi();
collisionDetection.OnUpdate += (_1, _2) => RecreateUi();
var view = new View(style);
window.Resized += (_1, a) => View.Resize((int)a.Width, (int)a.Height);
//window.Resized += (_1, a) => ui.Resize((int)a.Width, (int)a.Height);
bool drawUi = true;
bool drawVisualization = true;
window.KeyPressed += (_1, a) =>
{
switch (a.Code)
{
case Keyboard.Key.Escape: window.Close(); break;
case Keyboard.Key.Tab: drawUi = !drawUi; break;
case Keyboard.Key.V: drawVisualization = !drawVisualization; break;
}
};
var refCollisionAlgo = new CollisionGrid <ICollider>(-1f, -1f, 2f, 2f, 32, 32);
IEnumerable <ICollider> highlight = Enumerable.Empty <ICollider>();
var clock = new Clock();
while (window.IsOpen)
{
window.DispatchEvents();
var deltaTime = clock.Restart().AsSeconds();
scene.Update(deltaTime);
if (parameters.CollisionDetection)
{
var collidingSet = collisionDetection.FindCollisions();
if (parameters.DebugAlgo)
{
var result = refCollisionAlgo.FindAllCollisions(scene);
collidingSet.SymmetricExceptWith(result);
highlight = collidingSet.Flatten();
}
else
{
highlight = collidingSet.Flatten();
}
}
view.Draw(scene.Collider, highlight, parameters.DebugAlgo);
window.PushGLStates();
if (drawVisualization)
{
ui.DrawVisualization();
}
if (drawUi)
{
ui.DrawUi();
}
window.PopGLStates();
window.Display(); //buffer swap for double buffering and wait for next frame
}
}