private void RegisterSkid(VehicleWheel wheel, Vector3 pos)
{
if (pos == Vector3.Zero)
{
return;
}
CurrentSkid skid = null;
foreach (CurrentSkid cskid in _currentSkids)
{
if (cskid.Wheel == wheel)
{
skid = cskid; break;
}
}
if (skid == null)
{
skid = new CurrentSkid {
Wheel = wheel, StartPosition = pos, EndPosition = pos, StartTime = GameEngine.TotalSeconds
};
_currentSkids.Add(skid);
}
else
{
skid.IsActive = true;
skid.EndPosition = pos;
}
}
private void AddToBuffer(CurrentSkid skid)
{
int p1, p2;
float thickness = 0.13f;
float length = _vehicle.Chassis.Speed * 0.2f;
Vector3 direction = skid.EndPosition - skid.StartPosition;
direction.Normalize();
Vector3 normal = Vector3.Cross(direction, Vector3.UnitY);
normal.Normalize();
_vertices[_firstFreeVert].Position = skid.StartPosition - normal * thickness;
_vertices[_firstFreeVert].TextureCoordinate = new Vector2(0, 1);
_firstFreeVert++;
p1 = _firstFreeVert;
_vertices[_firstFreeVert].Position = skid.EndPosition - normal * thickness;
_vertices[_firstFreeVert].TextureCoordinate = new Vector2(length, 1);
_firstFreeVert++;
p2 = _firstFreeVert;
_vertices[_firstFreeVert].Position = skid.StartPosition + normal * thickness;
_vertices[_firstFreeVert].TextureCoordinate = Vector2.Zero;
_firstFreeVert++;
_vertices[_firstFreeVert] = _vertices[p2];
_firstFreeVert++;
_vertices[_firstFreeVert] = _vertices[p1];
_firstFreeVert++;
_vertices[_firstFreeVert].Position = skid.EndPosition + normal * thickness;
_vertices[_firstFreeVert].TextureCoordinate = new Vector2(length, 0);
_firstFreeVert = (_firstFreeVert + 1) % _vertices.Length;
if (_texture == null)
{
}
_skids[_skidPtr] = _texture; // ?? _defaultTexture;
_skidPtr = (_skidPtr + 1) % _maxSkids;
}
private void Update()
{
if (Enabled)
{
if (!Helpers.HasTimePassed(0.5f, _vehicle.LastRunOverPedTime))
{
foreach (var wheel in _vehicle.Chassis.Wheels)
{
if (!wheel.IsRear)
{
RegisterSkid(wheel, wheel.ContactPoint);
}
}
SetTexture(_bloodTexture);
}
else
{
if (_usingBloodTexture)
{
_usingBloodTexture = false;
SetTexture(_defaultTexture);
}
foreach (var wheel in _vehicle.Chassis.Wheels)
{
if (wheel.IsSkiddingLat || wheel.IsSkiddingLng)
{
RegisterSkid(wheel, wheel.ContactPoint);
}
}
}
}
for (int i = 0; i < _currentSkids.Count; i++)
{
CurrentSkid skid = _currentSkids[i];
if (!skid.IsActive)
{
_currentSkids.RemoveAt(i);
i--;
AddToBuffer(skid);
}
else if (Helpers.HasTimePassed(SKID_TIME, _currentSkids[i].StartTime))
{
AddToBuffer(skid);
skid.StartPosition = skid.EndPosition;
skid.StartTime = GameEngine.TotalSeconds;
}
}
int nbrTempSkids = 0;
for (int i = 0; i < _currentSkids.Count; i++)
{
if (_currentSkids[i].IsActive && !Helpers.HasTimePassed(SKID_TIME, _currentSkids[i].StartTime))
{
//temp
_currentSkids[i].EndPosition = _currentSkids[i].Wheel.ContactPoint;
AddToBuffer(_currentSkids[i]);
nbrTempSkids++;
}
}
AddNewParticlesToVertexBuffer();
_firstFreeVert -= 6 * nbrTempSkids;
if (_firstFreeVert < 0)
{
_firstFreeVert = _vertices.Length - (-_firstFreeVert);
}
_firstNewVert = _firstFreeVert;
_skidPtr -= 1 * nbrTempSkids;
if (_skidPtr < 0)
{
_skidPtr = _maxSkids - (-_skidPtr);
}
}