static public BoxShapeDesc CreateBoxShapeFromMesh(StaticModel mesh, float scale)
{
List <Vector3> verts = mesh.GetModelVertices(scale);
Vector3 negExtent = Vector3.Zero;
Vector3 posExtent = Vector3.Zero;
foreach (Vector3 vertex in verts)
{
if (vertex.X < negExtent.X)
{
negExtent.X = vertex.X;
}
if (vertex.X > posExtent.X)
{
posExtent.X = vertex.X;
}
if (vertex.Y < negExtent.Y)
{
negExtent.Y = vertex.Y;
}
if (vertex.Y > posExtent.Y)
{
posExtent.Y = vertex.Y;
}
if (vertex.Z < negExtent.Z)
{
negExtent.Z = vertex.Z;
}
if (vertex.Z > posExtent.Z)
{
posExtent.Z = vertex.Z;
}
}
BoxShapeDesc shape = new BoxShapeDesc();
shape.Extents = (posExtent - negExtent);
return(shape);
}
static public SphereShapeDesc CreateSphereShapeFromMesh(StaticModel mesh, float scale)
{
List <Vector3> verts = mesh.GetModelVertices(scale);
float largestSquareLength = 0.0f;
foreach (Vector3 vertex in verts)
{
float vertSqrLng = vertex.LengthSquared();
if (vertSqrLng > largestSquareLength)
{
largestSquareLength = vertSqrLng;
}
}
SphereShapeDesc shape = new SphereShapeDesc();
shape.Radius = (float)Math.Sqrt(largestSquareLength);
return(shape);
}
/// <summary>
/// Handles a message sent to this component.
/// </summary>
/// <param name="message">Message to be handled</param>
/// <returns>True, if handled, otherwise false</returns>
public override bool ExecuteMessage(IMessage message)
{
if (message.UniqueTarget != this.parentEntity.UniqueID)
{
return(false);
}
switch (message.Type)
{
case MessageType.GetModelVertices:
{
MsgGetModelVertices msgGetVerts = message as MsgGetModelVertices;
message.TypeCheck(msgGetVerts);
if (model == null)
{
return(false);
}
msgGetVerts.Vertices = model.GetModelVertices(this.parentEntity.Scale);
}
return(true);
case MessageType.GetModelIndices:
{
MsgGetModelIndices msgGetInds = message as MsgGetModelIndices;
message.TypeCheck(msgGetInds);
if (model == null)
{
return(false);
}
msgGetInds.Indices = model.GetModelIndices();
}
return(true);
case MessageType.SetModelColor:
{
MsgSetModelColor msgSetColor = message as MsgSetModelColor;
message.TypeCheck(msgSetColor);
this.ModelColor = msgSetColor.Color;
}
return(true);
case MessageType.GetModelColor:
{
MsgGetModelColor msgGetColor = message as MsgGetModelColor;
message.TypeCheck(msgGetColor);
msgGetColor.Color = this.modelColor;
}
return(true);
case MessageType.SetModelOpacity:
{
MsgSetModelOpacity msgSetOpacity = message as MsgSetModelOpacity;
message.TypeCheck(msgSetOpacity);
msgSetOpacity.Opacity = this.opacity;
}
return(true);
case MessageType.GetModelOpacity:
{
MsgGetModelOpacity msgGetOpacity = message as MsgGetModelOpacity;
message.TypeCheck(msgGetOpacity);
this.Opacity = msgGetOpacity.Opacity;
}
return(true);
case MessageType.PositionChanged:
{
MsgPositionChanged msgPosChanged = message as MsgPositionChanged;
message.TypeCheck(msgPosChanged);
// We update the render mesh's transform (position, rotation),
// and its bounding sphere's position as well.
this.worldTransform = this.scaleMatrix * this.parentEntity.Rotation * Matrix.CreateTranslation(msgPosChanged.Position);
this.boundingSphere.Center = this.parentEntity.Position;
}
return(true);
case MessageType.RotationChanged:
{
MsgRotationChanged msgRotChanged = message as MsgRotationChanged;
message.TypeCheck(msgRotChanged);
// We update the render mesh's transform (position, rotation).
this.worldTransform = this.scaleMatrix * msgRotChanged.Rotation * Matrix.CreateTranslation(this.parentEntity.Position);
}
return(true);
case MessageType.BodyActivated:
{
MsgPhysicsBodyActivated msgBodyActive = message as MsgPhysicsBodyActivated;
message.TypeCheck(msgBodyActive);
ActivateComponent();
}
return(true);
case MessageType.BodyDeactivated:
{
MsgPhysicsBodyDeactivated msgBodyDeactivated = message as MsgPhysicsBodyDeactivated;
message.TypeCheck(msgBodyDeactivated);
DeactivateComponent();
}
return(true);
default:
return(false);
}
}
/// <summary>
/// Create a shape from a <seealso cref="ShapeType"/> and the BaseEntity information.
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
protected ShapeDesc CreateShapeFromType(ShapeType type)
{
float scale = this.parentEntity.Scale;
this.height *= scale;
this.width *= scale;
this.depth *= scale;
this.diameter *= scale;
switch (type)
{
case ShapeType.Box:
{
if (null == this.physMesh)
{
var shape = new BoxShapeDesc();
shape.Extents = new Vector3(this.width, this.height, this.depth);
return(shape);
}
else
{
return(CreateBoxShapeFromMesh(this.physMesh, scale));
}
}
case ShapeType.Sphere:
{
if (null == this.physMesh)
{
var shape = new SphereShapeDesc();
shape.Radius = this.diameter / 2.0f;
return(shape);
}
else
{
return(CreateSphereShapeFromMesh(this.physMesh, scale));
}
}
case ShapeType.Heightfield:
{
// Unsupported by this method, use CreateHeightfieldShape()
return(null);
}
case ShapeType.Capsule:
{
var shape = new CapsuleShapeDesc();
shape.Radius = this.diameter / 2.0f;
shape.Length = this.height;
return(shape);
}
case ShapeType.Cylinder:
{
var shape = new CylinderShapeDesc();
shape.Height = this.height;
shape.Radius = this.diameter / 2.0f;
return(shape);
}
case ShapeType.Cone:
{
var shape = new ConeShapeDesc();
shape.Height = this.height;
shape.Radius = this.diameter / 2.0f;
return(shape);
}
case ShapeType.TriangleMesh:
{
if (isDynamic)
{
throw new Exception("Triangle Mesh shapes do not support dynamic physics");
}
TriangleMeshShapeDesc shape = new TriangleMeshShapeDesc();
if (this.physMesh == null)
{
MsgGetModelVertices msgGetVerts = ObjectPool.Aquire <MsgGetModelVertices>();
msgGetVerts.UniqueTarget = this.parentEntity.UniqueID;
this.parentEntity.Game.SendMessage(msgGetVerts);
shape.Vertices = msgGetVerts.Vertices;
MsgGetModelIndices msgGetInds = ObjectPool.Aquire <MsgGetModelIndices>();
msgGetInds.UniqueTarget = this.parentEntity.UniqueID;
this.parentEntity.Game.SendMessage(msgGetInds);
shape.Indices = msgGetInds.Indices;
}
else
{
shape.Vertices = physMesh.GetModelVertices(this.parentEntity.Scale);
shape.Indices = physMesh.GetModelIndices();
}
if ((shape.Vertices.Count == 0) || (shape.Indices.Count == 0))
{
return(null);
}
return(shape);
}
default:
// Throw exception
return(null);
}
;
}