private void processUserInput()
{
var ray = TW.Data.Get <CameraInfo>().GetCenterScreenRay();
if (TW.Graphics.Mouse.RelativeScrollWheel > 0)
{
placementGridSize *= 2;
}
if (TW.Graphics.Mouse.RelativeScrollWheel < 0)
{
placementGridSize /= 2;
}
placementGridSize = (int)MathHelper.Clamp(placementGridSize, 1, 20);
var raycaster = new Raycaster <Chunk>();
chunks.ForEach((c, p) =>
{
TW.Graphics.LineManager3D.AddBox(c.Box, Color.Black);
c.Raycast(raycaster, ray);
});
if (raycaster.GetClosest().IsHit)
{
Vector3 hitpoint = ray.GetPoint(raycaster.GetClosest().Distance);
Vector3 normal = -raycaster.GetClosest().HitNormal; //TODO: invert hack
TW.Graphics.LineManager3D.AddCenteredBox(hitpoint, 0.02f, Color.Yellow);
TW.Graphics.LineManager3D.AddLine(hitpoint, hitpoint + normal * 0.06f, Color.CadetBlue);
var targetCube = CalculatePlacementCube(hitpoint - normal * voxelSize * 0.1f, placementGridSize);
var halfVoxel = new Vector3(voxelSize / 2);
var placementWorldSize = placementGridSize * voxelSize;
var targetBoundingBox = new BoundingBox((Vector3)targetCube.ToVector3() * placementWorldSize + halfVoxel,
(targetCube + new Vector3(1, 1, 1)) * placementWorldSize + halfVoxel);
TW.Graphics.LineManager3D.AddBox(targetBoundingBox, Color.GreenYellow);
if (TW.Graphics.Mouse.LeftMouseJustPressed)
{
var addCube = CalculatePlacementCube(hitpoint + normal * 0.06f, placementGridSize);
Point3 placeOffset = (addCube.ToVector3() * placementWorldSize / voxelSize).ToPoint3Rounded();
var placer = new BasicShapeBuilder().CreateCube(placementGridSize);
PlaceInWorld(placer, placeOffset);
}
if (TW.Graphics.Mouse.RightMouseJustPressed)
{
Point3 placeOffset = (targetCube.ToVector3() * placementWorldSize / voxelSize).ToPoint3Rounded();
var placer = new BasicShapeBuilder().CreateCube(placementGridSize);
RemoveFromWorld(placer, placeOffset);
}
}
}
public void Raycast(Raycaster <Chunk> raycaster, Ray ray)
{
float?dist = ray.Intersects(Box);
if (!dist.HasValue)
{
return;
}
if (surface == null)
{
return;
}
foreach (var mesh in surface.Meshes)
{
raycaster.AddIntersection(ray, mesh.Positions.Select(v => (Vector3)v).ToArray(), surface.WorldMatrix, this);
}
}