/// <summary>
/// A convex-shaped ray-trace method for the special case of needing to handle Voxel collision types.
/// </summary>
/// <param name="shape">The shape of the convex ray source object.</param>
/// <param name="start">The start of the ray.</param>
/// <param name="dir">The normalized vector of the direction of the ray.</param>
/// <param name="len">The length of the ray.</param>
/// <param name="considerSolid">What materials are 'solid'.</param>
/// <param name="filter">A function to identify what entities should be filtered out.</param>
/// <param name="rayHit">Outputs the result of the ray trace.</param>
/// <returns>Whether there was a collision.</returns>
public bool SpecialCaseConvexTrace(ConvexShape shape, Location start, Location dir, double len, MaterialSolidity considerSolid, Func <BroadPhaseEntry, bool> filter, out RayCastResult rayHit)
{
RigidTransform rt = new RigidTransform(start.ToBVector(), BEPUutilities.Quaternion.Identity);
BEPUutilities.Vector3 sweep = (dir * len).ToBVector();
RayCastResult best = new RayCastResult(new RayHit()
{
T = len
}, null);
bool hA = false;
if (considerSolid.HasFlag(MaterialSolidity.FULLSOLID))
{
if (PhysicsWorld.ConvexCast(shape, ref rt, ref sweep, filter, out RayCastResult rcr))
{
best = rcr;
hA = true;
}
}
if (considerSolid == MaterialSolidity.FULLSOLID)
{
rayHit = best;
return(hA);
}
sweep = dir.ToBVector();
AABB box = new AABB()
{
Min = start,
Max = start
};
box.Include(start + dir * len);
foreach (KeyValuePair <Vector3i, Chunk> chunk in LoadedChunks)
{
if (chunk.Value == null || chunk.Value.FCO == null)
{
continue;
}
if (!box.Intersects(new AABB()
{
Min = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE,
Max = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE + new Location(Chunk.CHUNK_SIZE, Chunk.CHUNK_SIZE, Chunk.CHUNK_SIZE)
}))
{
continue;
}
if (chunk.Value.FCO.ConvexCast(shape, ref rt, ref sweep, len, considerSolid, out RayHit temp))
{
hA = true;
if (temp.T < best.HitData.T)
{
best.HitData = temp;
best.HitObject = chunk.Value.FCO;
}
}
}
rayHit = best;
return(hA);
}
/// <summary>
/// A ray-trace method for the special case of needing to handle Voxel collision types.
/// </summary>
/// <param name="start">The start of the ray.</param>
/// <param name="dir">The normalized vector of the direction of the ray.</param>
/// <param name="len">The length of the ray.</param>
/// <param name="considerSolid">What materials are 'solid'.</param>
/// <param name="filter">A function to identify what entities should be filtered out.</param>
/// <param name="rayHit">Outputs the result of the ray trace.</param>
/// <returns>Whether there was a collision.</returns>
public bool SpecialCaseRayTrace(Location start, Location dir, double len, MaterialSolidity considerSolid, Func <BroadPhaseEntry, bool> filter, out RayCastResult rayHit)
{
Ray ray = new Ray(start.ToBVector(), dir.ToBVector());
RayCastResult best = new RayCastResult(new RayHit()
{
T = len
}, null);
bool hA = false;
if (considerSolid.HasFlag(MaterialSolidity.FULLSOLID))
{
if (PhysicsWorld.RayCast(ray, len, filter, out RayCastResult rcr))
{
best = rcr;
hA = true;
}
}
if (considerSolid == MaterialSolidity.FULLSOLID)
{
rayHit = best;
return(hA);
}
AABB box = new AABB()
{
Min = start,
Max = start
};
box.Include(start + dir * len);
foreach (Dictionary <Vector3i, Chunk> chkmap in LoadedChunks)
{
foreach (Chunk chunk in chkmap.Values)
{
if (chunk == null || chunk.FCO == null)
{
continue;
}
if (!box.Intersects(new AABB()
{
Min = chunk.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE,
Max = chunk.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE + new Location(Chunk.CHUNK_SIZE, Chunk.CHUNK_SIZE, Chunk.CHUNK_SIZE)
}))
{
continue;
}
if (chunk.FCO.RayCast(ray, len, null, considerSolid, out RayHit temp))
{
hA = true;
if (temp.T < best.HitData.T)
{
best.HitData = temp;
best.HitObject = chunk.FCO;
}
}
}
}
rayHit = best;
return(hA);
}
public bool SpecialCaseRayTrace(Location start, Location dir, float len, MaterialSolidity considerSolid, Func<BroadPhaseEntry, bool> filter, out RayCastResult rayHit)
{
Ray ray = new Ray(start.ToBVector(), dir.ToBVector());
RayCastResult best = new RayCastResult(new RayHit() { T = len }, null);
bool hA = false;
if (considerSolid.HasFlag(MaterialSolidity.FULLSOLID))
{
RayCastResult rcr;
if (PhysicsWorld.RayCast(ray, len, filter, out rcr))
{
best = rcr;
hA = true;
}
}
AABB box = new AABB();
box.Min = start;
box.Max = start;
box.Include(start + dir * len);
foreach (KeyValuePair<Vector3i, Chunk> chunk in LoadedChunks)
{
if (chunk.Value == null || chunk.Value.FCO == null)
{
continue;
}
if (!box.Intersects(new AABB() { Min = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE, Max = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE + new Location(Chunk.CHUNK_SIZE) }))
{
continue;
}
RayHit temp;
if (chunk.Value.FCO.RayCast(ray, len, null, considerSolid, out temp))
{
hA = true;
//temp.T *= len;
if (temp.T < best.HitData.T)
{
best.HitData = temp;
best.HitObject = chunk.Value.FCO;
}
}
}
rayHit = best;
return hA;
}
public bool SpecialCaseConvexTrace(ConvexShape shape, Location start, Location dir, float len, MaterialSolidity considerSolid, Func<BroadPhaseEntry, bool> filter, out RayCastResult rayHit)
{
RigidTransform rt = new RigidTransform(start.ToBVector(), BEPUutilities.Quaternion.Identity);
BEPUutilities.Vector3 sweep = (dir * len).ToBVector();
RayCastResult best = new RayCastResult(new RayHit() { T = len }, null);
bool hA = false;
if (considerSolid.HasFlag(MaterialSolidity.FULLSOLID))
{
RayCastResult rcr;
if (PhysicsWorld.ConvexCast(shape, ref rt, ref sweep, filter, out rcr))
{
best = rcr;
hA = true;
}
}
sweep = dir.ToBVector();
AABB box = new AABB();
box.Min = start;
box.Max = start;
box.Include(start + dir * len);
foreach (KeyValuePair<Vector3i, Chunk> chunk in LoadedChunks)
{
if (chunk.Value == null || chunk.Value.FCO == null)
{
continue;
}
if (!box.Intersects(new AABB() { Min = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE, Max = chunk.Value.WorldPosition.ToLocation() * Chunk.CHUNK_SIZE + new Location(Chunk.CHUNK_SIZE) }))
{
continue;
}
RayHit temp;
if (chunk.Value.FCO.ConvexCast(shape, ref rt, ref sweep, len, considerSolid, out temp))
{
hA = true;
//temp.T *= len;
if (temp.T < best.HitData.T)
{
best.HitData = temp;
best.HitObject = chunk.Value.FCO;
}
}
}
rayHit = best;
return hA;
}
public bool ConvexCast(ConvexShape castShape, ref RigidTransform startingTransform, ref Vector3 sweepnorm, double slen, MaterialSolidity solidness, out RayHit hit)
{
RigidTransform rot = new RigidTransform(Vector3.Zero, startingTransform.Orientation);
castShape.GetBoundingBox(ref rot, out BoundingBox bb);
double adv = 0.1f;
double max = slen + adv;
bool gotOne = false;
RayHit BestRH = default(RayHit);
Vector3 sweep = sweepnorm * slen;
for (double f = 0; f < max; f += adv)
{
Vector3 c = startingTransform.Position + sweepnorm * f;
int mx = (int)Math.Ceiling(c.X + bb.Max.X);
for (int x = (int)Math.Floor(c.X + bb.Min.X); x <= mx; x++)
{
if (x < 0 || x >= ChunkSize.X)
{
continue;
}
int my = (int)Math.Ceiling(c.Y + bb.Max.Y);
for (int y = (int)Math.Floor(c.Y + bb.Min.Y); y <= my; y++)
{
if (y < 0 || y >= ChunkSize.Y)
{
continue;
}
int mz = (int)Math.Ceiling(c.Z + bb.Max.Z);
for (int z = (int)Math.Floor(c.Z + bb.Min.Z); z <= mz; z++)
{
if (z < 0 || z >= ChunkSize.Z)
{
continue;
}
BlockInternal bi = Blocks[BlockIndex(x, y, z)];
if (solidness.HasFlag(((Material)bi.BlockMaterial).GetSolidity()))
{
EntityShape es = BlockShapeRegistry.BSD[bi.BlockData].GetShape(bi.Damage, out Location offs, false);
if (es == null)
{
continue;
}
Vector3 adj = new Vector3(x + (double)offs.X, y + (double)offs.Y, z + (double)offs.Z);
EntityCollidable coll = es.GetCollidableInstance();
//coll.LocalPosition = adj;
RigidTransform rt = new RigidTransform(Vector3.Zero, Quaternion.Identity);
coll.LocalPosition = Vector3.Zero;
coll.WorldTransform = rt;
coll.UpdateBoundingBoxForTransform(ref rt);
RigidTransform adjusted = new RigidTransform(startingTransform.Position - adj, startingTransform.Orientation);
bool b = coll.ConvexCast(castShape, ref adjusted, ref sweep, out RayHit rhit);
if (b && (!gotOne || rhit.T * slen < BestRH.T) && rhit.T >= 0)
{
gotOne = true;
BestRH = rhit;
BestRH.Location += adj;
BestRH.T *= slen; // TODO: ???
BestRH.Normal = -BestRH.Normal; // TODO: WHY?!
}
}
}
}
}
if (gotOne)
{
hit = BestRH;
return(true);
}
}
hit = new RayHit()
{
Location = startingTransform.Position + sweep, Normal = new Vector3(0, 0, 0), T = slen
};
return(false);
}
public bool ConvexCast(ConvexShape castShape, ref RigidTransform startingTransform, ref Vector3 sweepnorm, double slen, MaterialSolidity solidness, out RayHit hit)
{
BoundingBox bb;
RigidTransform rot = new RigidTransform(Vector3.Zero, startingTransform.Orientation);
castShape.GetBoundingBox(ref rot, out bb);
double adv = 0.1f;
double max = slen + adv;
bool gotOne = false;
RayHit BestRH = default(RayHit);
Vector3 sweep = sweepnorm * slen;
for (double f = 0; f < max; f += adv)
{
Vector3 c = startingTransform.Position + sweepnorm * f;
int mx = (int)Math.Ceiling(c.X + bb.Max.X);
for (int x = (int)Math.Floor(c.X + bb.Min.X); x <= mx; x++)
{
if (x < 0 || x >= ChunkSize.X)
{
continue;
}
int my = (int)Math.Ceiling(c.Y + bb.Max.Y);
for (int y = (int)Math.Floor(c.Y + bb.Min.Y); y <= my; y++)
{
if (y < 0 || y >= ChunkSize.Y)
{
continue;
}
int mz = (int)Math.Ceiling(c.Z + bb.Max.Z);
for (int z = (int)Math.Floor(c.Z + bb.Min.Z); z <= mz; z++)
{
if (z < 0 || z >= ChunkSize.Z)
{
continue;
}
BlockInternal bi = Blocks[BlockIndex(x, y, z)];
if (solidness.HasFlag(((Material)bi.BlockMaterial).GetSolidity()))
{
Location offs;
EntityShape es = BlockShapeRegistry.BSD[bi.BlockData].GetShape(bi.Damage, out offs, false);
if (es == null)
{
continue;
}
Vector3 adj = new Vector3(x + (double)offs.X, y + (double)offs.Y, z + (double)offs.Z);
EntityCollidable coll = es.GetCollidableInstance();
//coll.LocalPosition = adj;
RigidTransform rt = new RigidTransform(Vector3.Zero, Quaternion.Identity);
coll.LocalPosition = Vector3.Zero;
coll.WorldTransform = rt;
coll.UpdateBoundingBoxForTransform(ref rt);
RayHit rhit;
RigidTransform adjusted = new RigidTransform(startingTransform.Position - adj, startingTransform.Orientation);
bool b = coll.ConvexCast(castShape, ref adjusted, ref sweep, out rhit);
if (b && (!gotOne || rhit.T * slen < BestRH.T) && rhit.T >= 0)
{
gotOne = true;
BestRH = rhit;
BestRH.Location += adj;
BestRH.T *= slen; // TODO: ???
BestRH.Normal = -BestRH.Normal; // TODO: WHY?!
}
}
}
}
}
if (gotOne)
{
hit = BestRH;
return true;
}
}
hit = new RayHit() { Location = startingTransform.Position + sweep, Normal = new Vector3(0, 0, 0), T = slen };
return false;
}