void CalculateAsteroidsTask()
{
cubeCount = 0;
Vector3 position;
BoundingFrustum frustum;
lock (_camera) {
position = _camera.Position;
frustum = _camera.Frustum;
}
var close = AsteroidFieldShared.GetCloseCube(cameraPos, field.CubeSize);
int amountCubes = (int)Math.Floor((field.FillDist / field.CubeSize)) + 1;
for (int x = -amountCubes; x <= amountCubes; x++)
{
for (int y = -amountCubes; y <= amountCubes; y++)
{
for (int z = -amountCubes; z <= amountCubes; z++)
{
var center = close + new Vector3(x, y, z) * field.CubeSize;
var closestDistance = (Vector3.Distance(center, position) - cubeRadius);
if (closestDistance >= field.FillDist || closestDistance >= lastFog)
{
continue;
}
if (!field.Zone.Shape.ContainsPoint(center))
{
continue;
}
var cubeSphere = new BoundingSphere(center, cubeRadius);
if (!frustum.Intersects(cubeSphere))
{
continue;
}
float tval;
if (!AsteroidFieldShared.CubeExists(center, field.EmptyCubeFrequency, out tval))
{
continue;
}
if (GetExclusionZone(center) != null)
{
continue;
}
cubes[cubeCount++] = new CalculatedCube(center, field.CubeRotation.GetRotation(tval) * Matrix4x4.CreateTranslation(center));
}
}
}
}
void CalculateAsteroids()
{
Vector3 position;
BoundingFrustum frustum;
lock (_camera) {
position = _camera.Position;
frustum = _camera.Frustum;
}
ZfrustumCulled = ZexistCulled = ZexcludeCulled = ZshapeCulled = 0;
var close = AsteroidFieldShared.GetCloseCube(cameraPos, field.CubeSize);
var cubeRad = new Vector3(field.CubeSize) * 0.5f;
int amountCubes = (int)Math.Floor((field.FillDist / field.CubeSize)) + 1;
for (int x = -amountCubes; x <= amountCubes; x++)
{
for (int y = -amountCubes; y <= amountCubes; y++)
{
for (int z = -amountCubes; z <= amountCubes; z++)
{
var center = close + new Vector3(x * field.CubeSize, y * field.CubeSize, z * field.CubeSize);
if (!field.Zone.Shape.ContainsPoint(center))
{
continue;
}
//var cubeBox = new BoundingBox(center - cubeRad, center + cubeRad);
//if (!frustum.Intersects(cubeBox))
//continue;
var cubeSphere = new BoundingSphere(center, field.CubeSize * 0.5f);
if (!frustum.Intersects(cubeSphere))
{
continue;
}
float tval;
if (!AsteroidFieldShared.CubeExists(center, field.EmptyCubeFrequency, out tval))
{
continue;
}
if (GetExclusionZone(center) != null)
{
continue;
}
cubes[cubeCount++] = new CalculatedCube(center, Matrix4.CreateTranslation(center) * field.CubeRotation.GetRotation(tval));
}
}
}
_asteroidsCalculated = true;
}
public override void FixedUpdate(TimeSpan time)
{
var world = Parent.GetWorld();
var player = world.GetObject("player");
if (player == null)
{
return;
}
if (VectorMath.DistanceSquared(player.PhysicsComponent.Body.Position, Field.Zone.Position) > activateDist)
{
return;
}
var cds = (Field.CubeSize + COLLIDE_DISTANCE);
cds *= cds;
for (int i = bodies.Count - 1; i >= 0; i--)
{
var distance = VectorMath.DistanceSquared(player.PhysicsComponent.Body.Position, bodies[i].Position);
if (distance > cds)
{
world.Physics.RemoveObject(bodies[i]);
bodies.RemoveAt(i);
}
}
var close = AsteroidFieldShared.GetCloseCube(player.PhysicsComponent.Body.Position, Field.CubeSize);
var cubeRad = new Vector3(Field.CubeSize) * 0.5f;
int amountCubes = (int)Math.Floor((COLLIDE_DISTANCE / Field.CubeSize)) + 1;
for (int x = -amountCubes; x <= amountCubes; x++)
{
for (int y = -amountCubes; y <= amountCubes; y++)
{
for (int z = -amountCubes; z <= amountCubes; z++)
{
var center = close + new Vector3(x * Field.CubeSize, y * Field.CubeSize, z * Field.CubeSize);
if (!Field.Zone.Shape.ContainsPoint(center))
{
continue;
}
if (VectorMath.DistanceSquared(player.PhysicsComponent.Body.Position, center) > cds)
{
continue;
}
float tval;
if (!AsteroidFieldShared.CubeExists(center, Field.EmptyCubeFrequency, out tval))
{
continue;
}
if (GetExclusionZone(center) != null)
{
continue;
}
bool create = true;
for (int i = 0; i < bodies.Count; i++)
{
if ((bodies[i].Position - center).LengthFast < 3)
{
create = false;
break;
}
}
if (create)
{
var transform = Field.CubeRotation.GetRotation(tval) * Matrix4.CreateTranslation(center);
var body = phys.AddStaticObject(transform, shape);
bodies.Add(body);
}
}
}
}
}
void CalculateBillboards()
{
Vector3 position;
BoundingFrustum frustum;
billboardCount = 0;
lock (_camera) {
position = _camera.Position;
frustum = _camera.Frustum;
}
var close = AsteroidFieldShared.GetCloseCube(cameraPos, field.FillDist * 2);
var checkRad = field.FillDist + field.BillboardSize.Y;
int checkCount = 0;
for (var x = -1; x <= 1; x++)
{
for (int y = -1; y <= 1; y++)
{
for (int z = -1; z <= 1; z++)
{
var center = close + new Vector3(x, y, z) * (field.FillDist * 2);
//early bail for billboards too far
if (Vector3.Distance(position, center) - checkRad > field.FillDist)
{
continue;
}
//bail billboards outside of zone - avoids popping
if (field.Zone.Shape.ScaledDistance(center) > 1.1f)
{
continue;
}
//rotate
var rotation =
AsteroidCubeRotation.Default.GetRotation(AsteroidFieldShared.PositionHash(center));
for (int i = 0; i < billboardCube.Length; i++)
{
var spritepos = center + Vector3.Transform(billboardCube[i].Position, rotation);
//cull individual billboards too far
if (Vector3.Distance(position, spritepos) > field.FillDist)
{
continue;
}
billboardBuffer[checkCount] = billboardCube[i];
billboardBuffer[checkCount].Position = spritepos;
billboardBuffer[checkCount++].Distance = Vector3.DistanceSquared(center, cameraPos);
}
}
}
}
//Highly unlikely this check will succeed. If it does there's something wrong with the cube code
if (checkCount > field.BillboardCount)
{
if (!warnedTooManyBillboards)
{
warnedTooManyBillboards = true;
FLLog.Warning("Asteroids", "Too many billboards in sort task for field " + field.Zone.Nickname);
}
Array.Sort(billboardBuffer, 0, checkCount); //Get closest
checkCount = field.BillboardCount;
}
//Cull ones that aren't on screen
for (int i = 0; i < checkCount; i++)
{
var billboard = billboardBuffer[i];
var sphere = new BoundingSphere(billboard.Position, billboard.Size * 1.5f);
if (!frustum.Intersects(sphere))
{
continue;
}
calculatedBillboards[billboardCount++] = billboard;
}
}