MPs that follow the marble

[whirligig]

USAGE:

Use this code to create a new type of MP, PathedFollow. This MP should have initialTargetPosition set to 0 and two nodes in its path, which then should move along one dimension. Set smoothing to linear with a relatively short msToNext. Add the following properties to the MP:

dimension: The dimension of movement (0 = x, 1 = y, 2 = z)
initialPos: The coordinate in this dimension of the first node
finalPos: The coordinate in this dimension of the second node
velocity: The difference between these two divided by msToNext, i.e. platform's velocity in TU/ms
offset: The coordinate of the platform's center relative to its defined origin (usually 0 for square MPs, but not always)

The MP will then slide along this dimension to follow the marble. Floor-like MPs can be moved back and forth at will, and wall-like MPs will block you from passing.

INSTALLATION:

Copy this code into pathedInteriors.cs:

datablock PathedInteriorData(PathedFollow)
{
  foo = bla;
};

function PathedFollow::onMissionReset(%this,%obj) {
  if (%obj.sch !$= "") cancel(%obj.sch);
  %obj.sch = schedule(10,0,"updatePlatform",%obj);
}

function updatePlatform(%obj) {
  if (!isObject(%obj)) return;
  %targetPos = getWord(LocalClientConnection.player.getTransform(),%obj.dimension)-%obj.offset;
  if (%obj.finalPos > %obj.initialPos && %targetPos < %obj.initialPos) %targetPos = %obj.initialPos;
  else if (%obj.finalPos > %obj.initialPos && %targetPos > %obj.finalPos) %targetPos = %obj.finalPos;
  else if (%obj.finalPos < %obj.initialPos && %targetPos > %obj.initialPos) %targetPos = %obj.initialPos;
  else if (%obj.finalPos < %obj.initialPos && %targetPos < %obj.finalPos) %targetPos = %obj.finalPos;
 
  if (%obj.finalPos > %obj.initialPos) %obj.setTargetPosition((%targetPos - %obj.initialPos)/%obj.velocity);
  else %obj.setTargetPosition((%obj.finalPos - %targetPos)/%obj.velocity);
  %obj.sch = schedule(10,0,"updatePlatform",%obj);
}