public override void Initialize(Collidable newCollidableA, Collidable newCollidableB)
{
convex = newCollidableA as ConvexCollidable;
voxelGrid = newCollidableB as VoxelGrid;
if (convex == null || voxelGrid == null)
{
convex = newCollidableB as ConvexCollidable;
voxelGrid = newCollidableA as VoxelGrid;
if (convex == null || voxelGrid == null)
{
throw new ArgumentException("Inappropriate types used to initialize contact manifold.");
}
}
ActivePairs = new QuickDictionary <Int3, GeneralConvexPairTester>(BufferPools <Int3> .Locking, BufferPools <GeneralConvexPairTester> .Locking, BufferPools <int> .Locking, 3);
activePairsBackBuffer = new QuickDictionary <Int3, GeneralConvexPairTester>(BufferPools <Int3> .Locking, BufferPools <GeneralConvexPairTester> .Locking, BufferPools <int> .Locking, 3);
}
public override void Initialize(BroadPhaseEntry entryA, BroadPhaseEntry entryB)
{
voxelGrid = entryA as VoxelGrid;
convex = entryB as ConvexCollidable;
if (voxelGrid == null || convex == null)
{
voxelGrid = entryB as VoxelGrid;
convex = entryA as ConvexCollidable;
if (voxelGrid == null || convex == null)
{
throw new ArgumentException("Inappropriate types used to initialize pair.");
}
}
//Contact normal goes from A to B.
broadPhaseOverlap = new BroadPhaseOverlap(convex, voxelGrid, broadPhaseOverlap.CollisionRule);
UpdateMaterialProperties(convex.Entity != null ? convex.Entity.Material : null, voxelGrid.Material);
base.Initialize(entryA, entryB);
}
/// <summary>
/// Constructs a new demo.
/// </summary>
/// <param name="game">Game owning this demo.</param>
public SimpleVoxelCollidableDemo(DemosGame game)
: base(game)
{
VoxelGridConvexPairHandler.EnsurePairsAreRegistered();
int cellCountX = 16;
int cellCountY = 16;
int cellCountZ = 16;
var cells = new bool[cellCountX, cellCountY, cellCountZ];
for (int i = 0; i < cellCountX; ++i)
{
for (int j = 0; j < cellCountY; ++j)
{
for (int k = 0; k < cellCountZ; ++k)
{
cells[i, j, k] = (Math.Sin(i * 0.55f + 6f + j * -0.325f) + Math.Sin(j * 0.35f - 0.5f + MathHelper.PiOver2) + Math.Sin(k * 0.5f + MathHelper.Pi + 6 + j * 0.25f)) > 0;
}
}
}
var cellWidth = 1f;
var shape = new VoxelGridShape(cells, cellWidth);
var grid = new VoxelGrid(shape, new Vector3(-cellCountX * cellWidth * 0.5f, -cellCountY * cellWidth, -cellCountZ * cellWidth * 0.5f));
Space.Add(grid);
int width = 10;
int height = 10;
float blockWidth = 2f;
float blockHeight = 1f;
float blockLength = 1f;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
var toAdd =
new Box(
new Vector3(
i * blockWidth + .5f * blockWidth * (j % 2) - width * blockWidth * .5f,
blockHeight * .5f + j * (blockHeight),
0),
blockWidth, blockHeight, blockLength, 10);
Space.Add(toAdd);
}
}
game.Camera.Position = new Vector3(0, 0, 25);
for (int i = 0; i < cellCountX; ++i)
{
for (int j = 0; j < cellCountY; ++j)
{
for (int k = 0; k < cellCountZ; ++k)
{
if (shape.Cells[i, j, k])
{
//This is a turbo-inefficient way to render things, but good enough for now. If you want to visualize a larger amount... you'll probably have to write your own.
game.ModelDrawer.Add(new DisplayModel(game.Content.Load <Model>("cube"), game.ModelDrawer)
{
WorldTransform = Matrix.CreateWorldRH(grid.Position + new Vector3((i + 0.5f) * cellWidth, (j + 0.5f) * cellWidth, (k + 0.5f) * cellWidth), Vector3.Forward, Vector3.Up)
});
}
}
}
}
}
///<summary>
/// Cleans up the pair handler.
///</summary>
public override void CleanUp()
{
base.CleanUp();
voxelGrid = null;
convex = null;
}