private static bool IsSlopeCollisionDetection(VerletSimulator physicSimu, VisualEntity entityTesting, ref BoundingBox playerBoundingBox, ref BoundingBox playerBoundingBox2Evaluate, ref Vector3D newPosition2Evaluate, ref Vector3D previousPosition, ItemOrientation slopeOrientation, bool onSlidingSlope, out bool isSliding)
{
isSliding = false;
Vector3 entityPosition = newPosition2Evaluate.AsVector3();
float posi = 0.0f;
float L = 0.0f;
float H = entityTesting.WorldBBox.Maximum.Y - entityTesting.WorldBBox.Minimum.Y;
switch (slopeOrientation)
{
case ItemOrientation.North:
L = entityTesting.WorldBBox.Maximum.Z - entityTesting.WorldBBox.Minimum.Z;
posi = (entityPosition.Z + playerBoundingBox.Maximum.Z) - entityTesting.WorldBBox.Minimum.Z;
break;
case ItemOrientation.South:
L = entityTesting.WorldBBox.Maximum.Z - entityTesting.WorldBBox.Minimum.Z;
posi = entityTesting.WorldBBox.Maximum.Z - (entityPosition.Z + playerBoundingBox.Minimum.Z);
break;
case ItemOrientation.East:
L = entityTesting.WorldBBox.Maximum.X - entityTesting.WorldBBox.Minimum.X;
posi = entityTesting.WorldBBox.Maximum.X - (entityPosition.X + playerBoundingBox.Minimum.X);
break;
case ItemOrientation.West:
L = entityTesting.WorldBBox.Maximum.X - entityTesting.WorldBBox.Minimum.X;
posi = (entityPosition.X + playerBoundingBox.Maximum.X) - entityTesting.WorldBBox.Minimum.X;
break;
default:
break;
}
float posiOriginal = posi;
posi = posi / L;
float Y = posi * H;
Y = Math.Min(Math.Max(Y, 0), 1);
if (onSlidingSlope)
{
return(SlidingSlope(physicSimu, entityTesting, Y, ref newPosition2Evaluate, ref previousPosition, slopeOrientation, out isSliding));
}
//Apply only if new Y is >= Current Y
if (entityTesting.WorldBBox.Minimum.Y + Y > newPosition2Evaluate.Y)
{
return(NormalSlope(physicSimu, entityTesting, Y, ref newPosition2Evaluate, ref previousPosition));
}
else
{
physicSimu.AllowJumping = true;
return(false);
}
}
private static bool SlidingSlope(VerletSimulator physicSimu, VisualEntity entityTesting, float Y, ref Vector3D newPosition2Evaluate, ref Vector3D previousPosition, ItemOrientation slopeOrientation, out bool isSliding)
{
isSliding = false;
if (entityTesting.WorldBBox.Minimum.Y + Y >= newPosition2Evaluate.Y)
{
if (((entityTesting.WorldBBox.Minimum.Y + Y) - newPosition2Evaluate.Y) < 0.3f)
{
Y = Y - (float)(newPosition2Evaluate.Y - Math.Floor(newPosition2Evaluate.Y));
if (Y < 0.001 || Y >= 0.999)
{
Y = 0.02f;
}
newPosition2Evaluate.Y += entityTesting.Entity.Friction;
isSliding = true;
switch (slopeOrientation)
{
case ItemOrientation.North:
newPosition2Evaluate.Z = newPosition2Evaluate.Z - Y;
if (physicSimu.IsSliding == false)
{
physicSimu.SliddingForce = new Vector3(0, 0, -1);
}
break;
case ItemOrientation.South:
newPosition2Evaluate.Z = newPosition2Evaluate.Z + Y;
if (physicSimu.IsSliding == false)
{
physicSimu.SliddingForce = new Vector3(0, 0, 1);
}
break;
case ItemOrientation.East:
newPosition2Evaluate.X = newPosition2Evaluate.X + Y;
if (physicSimu.IsSliding == false)
{
physicSimu.SliddingForce = new Vector3(1, 0, 0);
}
break;
case ItemOrientation.West:
newPosition2Evaluate.X = newPosition2Evaluate.X - Y;
if (physicSimu.IsSliding == false)
{
physicSimu.SliddingForce = new Vector3(-1, 0, 0);
}
break;
default:
break;
}
return(false);
}
else
{
return(true);
}
}
else
{
physicSimu.AllowJumping = true;
return(false);
}
}
private static void SlopeCollisionDetection(VerletSimulator physicSimu, VisualEntity entityTesting, ref BoundingBox playerBoundingBox, ref BoundingBox playerBoundingBox2Evaluate, ref Vector3D newPosition2Evaluate, ref Vector3D previousPosition, ItemOrientation slopeOrientation, bool OnSlidingSlope, out bool isSliding)
{
if (IsSlopeCollisionDetection(physicSimu, entityTesting, ref playerBoundingBox, ref playerBoundingBox2Evaluate, ref newPosition2Evaluate, ref previousPosition, slopeOrientation, OnSlidingSlope, out isSliding))
{
Vector3D newPositionWithColliding = previousPosition;
newPositionWithColliding.X = newPosition2Evaluate.X;
playerBoundingBox2Evaluate = new BoundingBox(playerBoundingBox.Minimum + newPositionWithColliding.AsVector3(), playerBoundingBox.Maximum + newPositionWithColliding.AsVector3());
if (entityTesting.WorldBBox.Intersects(ref playerBoundingBox2Evaluate))
{
newPositionWithColliding.X = previousPosition.X;
}
newPositionWithColliding.Z = newPosition2Evaluate.Z;
playerBoundingBox2Evaluate = new BoundingBox(playerBoundingBox.Minimum + newPositionWithColliding.AsVector3(), playerBoundingBox.Maximum + newPositionWithColliding.AsVector3());
if (entityTesting.WorldBBox.Intersects(ref playerBoundingBox2Evaluate))
{
newPositionWithColliding.Z = previousPosition.Z;
}
newPosition2Evaluate = newPositionWithColliding;
}
}