CollisionShape^ CollisionShape::GetManaged(btCollisionShape* collisionShape)
{
if (collisionShape == 0) {
return nullptr;
}
void* userObj = collisionShape->getUserPointer();
if (userObj)
return static_cast<CollisionShape^>(VoidPtrToGCHandle(userObj).Target);
// If we reach here, then collisionShape was created from within unmanaged code,
// create a wrapper object based on the shape type.
BroadphaseNativeType type = (BroadphaseNativeType)collisionShape->getShapeType();
CollisionShape^ shape;
switch(type)
{
case BroadphaseNativeType::TetrahedralShape: // Required for CompoundFromGImpact.Create
shape = gcnew BuSimplex1To4((btBU_Simplex1to4*) collisionShape);
break;
case BroadphaseNativeType::TriangleShape: // Required for ContactCallback from convex-concave algorithm
shape = gcnew TriangleShape((btTriangleShape*) collisionShape);
break;
case BroadphaseNativeType::GImpactShape: // Required for GImpactMeshShape.GetMeshPart
shape = gcnew GImpactMeshShapePart((btGImpactMeshShapePart*) collisionShape);
break;
default:
//throw gcnew NotImplementedException();
shape = gcnew CollisionShape(collisionShape);
}
shape->_preventDelete = true;
return shape;
}
btCollisionShape * PhysicsObject::readCollisionData(char * path)
{
SECURITY_ATTRIBUTES sa = {sizeof(SECURITY_ATTRIBUTES), NULL, false};
CreateDirectory("Collision Shapes", &sa);
FILE * file;
char * configName = path;
//file = fopen(configName, "r");
fopen_s(&file, configName, "r");
if (file == NULL) { fclose(file); return NULL; } //no file found, Failed to Generate Collision Shape
fclose(file);
list<CollisionShape> * shapes = new list<CollisionShape>();
ifstream fileStream(configName);
string s;
string var, val;
while (fileStream.peek() != -1)
{
s = var = val = "";
getline(fileStream, s);
bool eq = false;
int i = 1;
if (s == "}" || s == "{") continue;
else if (s == "box") { shapes->push_back(CollisionShape()); shapes->back().type = "box"; continue; }
else if (s == "sphere") { shapes->push_back(CollisionShape()); shapes->back().type = "sphere"; continue; }
else if (s == "capsule") { shapes->push_back(CollisionShape()); shapes->back().type = "capsule"; continue; }
else if (s == "cylinderY" || s == "cylinder") { shapes->push_back(CollisionShape()); shapes->back().type = "cylinder"; continue; }
else if (s == "cylinderX") { shapes->push_back(CollisionShape()); shapes->back().type = "cylinderX"; continue; }
else if (s == "cylinderZ") { shapes->push_back(CollisionShape()); shapes->back().type = "cylinderZ"; continue; }
else if (s == "hull") { shapes->push_back(CollisionShape()); shapes->back().type = "hull"; shapes->back().vertices = list<btVector3>(); continue; }
else
{
while (i < (int)s.size())
{
if (s[i] == '=') eq = true;
else if (eq) val += s[i];
else var += s[i];
i++;
}
if (var == "pos") shapes->back().pos = val;
else if (var == "size") shapes->back().size = val;
else if (var == "axis") shapes->back().axis = val;
else if (var == "rot") shapes->back().rot = val;
else if (var == "vert") shapes->back().vertices.push_back(stringToBTVector3(val));
}
}
fileStream.close();
if (shapes->size() == 0) return NULL;
else if (shapes->size() == 1)
{
btCollisionShape * colShape = createCollisionShape(&(shapes->front()));
shapes->pop_front();
delete shapes;
return colShape;
}
else
{
btCompoundShape * compoundShape = new btCompoundShape();
int isd = COMPOUND_SHAPE_PROXYTYPE;
while (shapes->size() > 0)
{
btCollisionShape * colShape = createCollisionShape(&shapes->front());
btTransform trans; trans.setIdentity();
trans.setOrigin(stringToBTVector3(shapes->front().pos));
trans.setRotation(btQuaternion(stringToBTVector3(shapes->front().axis), (float)atof(shapes->front().rot.c_str())));
collisionSubShapes->push_back(colShape);
compoundShape->addChildShape(trans, colShape);
shapes->pop_front();
}
delete shapes;
return compoundShape;
}
}
