private static void Follow()
{
if (!_currentlyFollowing || _followedThing == null)
{
return;
}
Vector3 newCameraPosition;
if (!_followedThing.Spawned && _followedThing.holder != null)
{
// thing is in some sort of container
IThingContainerOwner holder = _followedThing.holder.owner;
// if holder is a pawn's carrytracker we can use the smoother positions of the pawns's drawposition
Pawn_CarryTracker tracker = holder as Pawn_CarryTracker;
if (tracker != null)
{
newCameraPosition = tracker.pawn.DrawPos;
}
// otherwise the holder int location will have to do
else
{
newCameraPosition = holder.GetPosition().ToVector3Shifted();
}
}
// thing is spawned in world, just use the things drawPos
else if (_followedThing.Spawned)
{
newCameraPosition = _followedThing.DrawPos;
}
// we've lost track of whatever it was we were following
else
{
StopFollow();
return;
}
// to avoid cancelling the following immediately after it starts, allow the camera to move to the followed thing once
// before starting to compare positions
if (_cameraHasJumpedAtLeastOnce)
{
// the actual location of the camera right now
var currentCameraPosition = Find.CameraDriver.MapPosition;
// the location the camera has been requested to be at
var requestedCameraPosition = GetRequestedCameraPosition().ToIntVec3();
// these normally stay in sync while following is active, since we were the last to request where the camera should go.
// If they get out of sync, it's because the camera has been asked to jump to somewhere else, and we should stop
// following our thing.
if (Math.Abs(currentCameraPosition.x - requestedCameraPosition.x) > 1 || Math.Abs(currentCameraPosition.z - requestedCameraPosition.z) > 1)
{
StopFollow();
return;
}
}
Find.CameraDriver.JumpTo(newCameraPosition);
_cameraHasJumpedAtLeastOnce = true;
}
// Called every frame when the mod is enabled.
public virtual void Update()
{
if (Enabled)
{
try
{
// shut it off if we're manually scrolling (keys)
if (CurrentlyFollowing)
{
if (followBreakingKeyBindingDefs.Any(key => key.IsDown))
{
Messages.Message("FollowMe.Cancel".Translate(followedLabel), MessageSound.Negative);
followedThing = null;
CurrentlyFollowing = false;
}
}
// TODO: figure out how to shut it off when scrolling by mouse?
// get selection
Thing newFollowedThing = Find.Selector.SingleSelectedObject as Thing;
// start/stop following thing on key press
if (FollowKey.KeyDownEvent)
{
Log.Message("FollowMe :: Follow key pressed");
// nothing to cancel or start following
if (!CurrentlyFollowing && newFollowedThing == null)
{
if (Find.Selector.NumSelected > 1)
{
Messages.Message("FollowMe.RejectMultiple".Translate(), MessageSound.RejectInput);
}
else if (Find.Selector.NumSelected == 0)
{
Messages.Message("FollowMe.RejectNoSelection".Translate(), MessageSound.RejectInput);
}
else
{
Messages.Message("FollowMe.RejectNotAThing".Translate(), MessageSound.RejectInput);
}
}
// cancel current follow
else if (CurrentlyFollowing && newFollowedThing == null || newFollowedThing == followedThing)
{
Messages.Message("FollowMe.Cancel".Translate(followedLabel), MessageSound.Negative);
followedThing = null;
CurrentlyFollowing = false;
}
// follow new thing
else if (newFollowedThing != null)
{
followedThing = newFollowedThing;
CurrentlyFollowing = true;
Messages.Message("FollowMe.Follow".Translate(followedLabel), MessageSound.Negative);
}
}
// try follow whatever thing is selected
if (CurrentlyFollowing && followedThing != null)
{
if (!followedThing.Spawned && followedThing.holder != null)
{
// thing is in some sort of container
IThingContainerOwner holder = followedThing.holder.owner;
// if holder is a pawn's carrytracker we can use the smoother positions of the pawns's drawposition
Pawn_CarryTracker tracker = holder as Pawn_CarryTracker;
if (tracker != null)
{
Find.CameraMap.JumpTo(tracker.pawn.DrawPos);
}
// otherwise the holder int location will have to do
else
{
Find.CameraMap.JumpTo(holder.GetPosition());
}
}
else if (followedThing.Spawned)
{
// thing is spawned in world, just use the things drawPos
Find.CameraMap.JumpTo(followedThing.DrawPos);
}
else
{
// we've lost track of whatever it was we were following
Log.Message("FollowMe.Cancel".Translate(followedLabel));
CurrentlyFollowing = false;
followedThing = null;
}
}
}
// catch exception to avoid error spam
catch (Exception e)
{
Enabled = false;
Log.Error(e.ToString());
}
}
}