public void TryCameraCollision(BaseCamera camera)
{
ThirdPersonCamera thirdPersonCamera = camera as ThirdPersonCamera;
if (thirdPersonCamera == null)
{
return;
}
// Start moving from camera target to it's seek position
float distanceFromTargetToCamera = thirdPersonCamera.MaxDistanceFromTargetToCamera;
Vector3 cameraForwardVector = thirdPersonCamera.GetEyeSpaceForwardVector();
Vector3 startPosition = thirdPersonCamera.GetTargetVector();
float safeInterval = thirdPersonCamera.CameraCollisionSphereRadius;
for (float interval = safeInterval; interval <= distanceFromTargetToCamera; interval += (thirdPersonCamera.CameraCollisionSphereRadius / 10.0f))
{
var intermediatePosition = startPosition - cameraForwardVector * interval;
FSphere cameraCollisionSphere = new FSphere(intermediatePosition, thirdPersonCamera.CameraCollisionSphereRadius);
var boundingBoxes = GetBoundingBoxesForCameraCollisionTest(ref cameraCollisionSphere, thirdPersonCamera.GetThirdPersonTarget().GetRootComponent());
if (boundingBoxes.Count > 0)
{
//if (IsCameraCollisionWithBoundingBoxes(ref cameraCollisionSphere, boundingBoxes))
//{
// break;
//}
}
safeInterval = interval;
}
thirdPersonCamera.SetDistanceFromTargetToCamera(safeInterval);
}
private bool IsCameraCollisionWithBoundingBoxes(ref FSphere cameraCollisionSphere, List <BoundBase> collidedRootBounds)
{
bool bSphereAndRegularBoundingBoxCollision = false;
CheckRegularBoundingBoxAndCameraSphereCollision(ref bSphereAndRegularBoundingBoxCollision, ref collidedRootBounds, ref cameraCollisionSphere);
return(bSphereAndRegularBoundingBoxCollision);
}
public static bool IsSphereVsSphereIntersection(ref FSphere sphere1, ref FSphere sphere2)
{
Vector3 SphereOriginDistance = sphere1.Origin - sphere2.Origin;
float SquaredDistance = Vector3.Dot(SphereOriginDistance, SphereOriginDistance);
float SquaredRadiuses = (sphere1.Radius * sphere1.Radius) + (sphere2.Radius * sphere2.Radius);
return(SquaredDistance <= SquaredRadiuses);
}
private void UpdateBounds()
{
if (!StaticMesh)
{
return;
}
BoundBox = Geometry.CaculateWorldBound(StaticMesh.bounds, Matrix_LocalToWorld);
BoundSphere = new FSphere(Geometry.CaculateBoundRadius(BoundBox), BoundBox.center);
}
public virtual void IsLitByLightSource(List <PointLight> LightList)
{
m_lightVisibilityMap.Init(LightList.Count, false);
for (Int32 i = 0; i < LightList.Count; i++)
{
BoundBase bound = GetAABBFromAllChildComponents();
FSphere boundSphere = (FSphere)bound;
FSphere lightSphere = new FSphere(LightList[i].Position.Xyz, LightList[i].AttenuationRadius);
m_lightVisibilityMap[i] = GeometryMath.IsSphereVsSphereIntersection(ref boundSphere, ref lightSphere);
}
}
private void CheckRegularBoundingBoxAndCameraSphereCollision(ref bool bSphereAndFrameBoundingBoxCollision,
ref List <BoundBase> collidedRootBounds, ref FSphere cameraCollisionSphere)
{
foreach (var testingBound in collidedRootBounds)
{
FSphere obbCollisionSphere = (FSphere)testingBound;
if (GeometryMath.IsSphereVsSphereIntersection(ref cameraCollisionSphere, ref obbCollisionSphere))
{
bSphereAndFrameBoundingBoxCollision = true;
break;
}
}
}
private void CalculateModelBounds()
{
// Iterate through the shapes and calculate a bounding box which encompasses all of them.
Vector3 min = new Vector3(float.MaxValue, float.MaxValue, float.MaxValue);
Vector3 max = new Vector3(float.MinValue, float.MinValue, float.MinValue);
foreach (var shape in SHP1Tag.Shapes)
{
Vector3 sMin = shape.BoundingBox.Min;
Vector3 sMax = shape.BoundingBox.Max;
if (sMin.X < min.X)
{
min.X = sMin.X;
}
if (sMax.X > max.X)
{
max.X = sMax.X;
}
if (sMin.Y < min.Y)
{
min.Y = sMin.Y;
}
if (sMax.Y > max.Y)
{
max.Y = sMax.Y;
}
if (sMin.Z < min.Z)
{
min.Z = sMin.Z;
}
if (sMax.Z > max.Z)
{
max.Z = sMax.Z;
}
}
BoundingBox = new FAABox(min, max);
BoundingSphere = new FSphere(BoundingBox.Center, BoundingBox.Max.Length);
}
// CAMERA
private List <BoundBase> GetBoundingBoxesForCameraCollisionTest(ref FSphere cameraCollisionSphere, Component characterRootComponent)
{
List <BoundBase> resultCollidedRootBounds = new List <BoundBase>();
foreach (var unit in CollisionUnits)
{
if (unit.RootComponent == characterRootComponent)
{
continue;
}
FSphere aabbCollisionSphere = (FSphere)(unit.GetAndTryUpdateFramingBoundingBox());
if (GeometryMath.IsSphereVsSphereIntersection(ref cameraCollisionSphere, ref aabbCollisionSphere))
{
resultCollidedRootBounds.AddRange(unit.GetBoundingBoxes());
}
}
return(resultCollidedRootBounds);
}
private void LoadTagDataFromFile(EndianBinaryReader reader, int tagCount, bool dumpTextures, bool dumpShaders)
{
for (int i = 0; i < tagCount; i++)
{
long tagStart = reader.BaseStream.Position;
string tagName = reader.ReadString(4);
int tagSize = reader.ReadInt32();
switch (tagName)
{
// INFO - Vertex Count, Scene Hierarchy
case "INF1":
INF1Tag = new INF1();
INF1Tag.LoadINF1FromStream(reader, tagStart);
break;
// VERTEX - Stores vertex arrays for pos/normal/color0/tex0 etc.
// Contains VertexAttributes which describe how the data is stored/laid out.
case "VTX1":
VTX1Tag = new VTX1();
VTX1Tag.LoadVTX1FromStream(reader, tagStart, tagSize);
break;
// ENVELOPES - Defines vertex weights for skinning
case "EVP1":
EVP1Tag = new EVP1();
EVP1Tag.LoadEVP1FromStream(reader, tagStart);
break;
// DRAW (Skeletal Animation Data) - Stores which matrices (?) are weighted, and which are used directly
case "DRW1":
DRW1Tag = new DRW1();
DRW1Tag.LoadDRW1FromStream(reader, tagStart);
break;
// JOINTS - Stores the skeletal joints (position, rotation, scale, etc...)
case "JNT1":
JNT1Tag = new JNT1();
JNT1Tag.LoadJNT1FromStream(reader, tagStart);
JNT1Tag.CalculateParentJointsForSkeleton(INF1Tag.HierarchyRoot);
break;
// SHAPE - Face/Triangle information for model.
case "SHP1":
SHP1Tag = new SHP1();
SHP1Tag.ReadSHP1FromStream(reader, tagStart, VTX1Tag.VertexData);
break;
// MATERIAL - Stores materials (which describes how textures, etc. are drawn)
case "MAT3":
MAT3Tag = new MAT3();
MAT3Tag.LoadMAT3FromStream(reader, tagStart);
break;
// TEXTURES - Stores binary texture images.
case "TEX1":
TEX1Tag = new TEX1();
TEX1Tag.LoadTEX1FromStream(reader, tagStart, dumpTextures);
break;
// MODEL - Seems to be bypass commands for Materials and invokes GX registers directly.
case "MDL3":
break;
}
// Skip the stream reader to the start of the next tag since it gets moved around during loading.
reader.BaseStream.Position = tagStart + tagSize;
}
// To generate shaders we need to know which vertex attributes need to be enabled for the shader. However,
// the shader has no knowledge in our book as to what attributes are enabled. Theoretically we could enable
// them on the fly as something requested it, but that'd involve more code that I don't want to do right now.
// To resolve, we iterate once through the hierarchy to see which mesh is called after a material and bind the
// vertex descriptions.
Material dummyMat = null;
AssignVertexAttributesToMaterialsRecursive(INF1Tag.HierarchyRoot, ref dummyMat, MAT3Tag);
// Now that the vertex attributes are assigned to the materials, generate a shader from the data.
GenerateShadersForMaterials(MAT3Tag, dumpShaders);
// Iterate through the shapes and calculate a bounding box which encompasses all of them.
Vector3 min = new Vector3(float.MaxValue, float.MaxValue, float.MaxValue);
Vector3 max = new Vector3(float.MinValue, float.MinValue, float.MinValue);
foreach (var shape in SHP1Tag.Shapes)
{
Vector3 sMin = shape.BoundingBox.Min;
Vector3 sMax = shape.BoundingBox.Max;
if (sMin.X < min.X)
{
min.X = sMin.X;
}
if (sMax.X > max.X)
{
max.X = sMax.X;
}
if (sMin.Y < min.Y)
{
min.Y = sMin.Y;
}
if (sMax.Y > max.Y)
{
max.Y = sMax.Y;
}
if (sMin.Z < min.Z)
{
min.Z = sMin.Z;
}
if (sMax.Z > max.Z)
{
max.Z = sMax.Z;
}
}
BoundingBox = new FAABox(min, max);
BoundingSphere = new FSphere(BoundingBox.Center, BoundingBox.Max.Length);
}