How to make bots follow a player. A centipede.

I used TGE 1.3 following these steps...

1. In starter.fps/server/scripts/aiplayer.cs, change function DemoPlayer::onReachDestination so that it just returns. You could probably just comment it out in it's entirety.

function DemoPlayer::onReachDestination(%this,%obj)
{
return;
}

2. Add the following script at the bottom of the same file as above, starter.fps/server/scripts/aiplayer.cs.

function AIPlayer::followPlayer(%this,%player)
{
%this.stopThread(0);
if (!isObject(%player)) {
%this.player = "";
return;
}
%this.following = %player;
%this.think();
}

function AIPlayer::think(%this)
{
%player = %this.following;
%y = getWord(%player.getDataBlock().boundingBox, 1);
%pos = getWords(%player.getTransform(), 0, 2);
%oldPos = %pos;
%vec = " 0 -1 0";
%vec = MatrixMulVector(%player.getTransform(), %vec);
%pos = "0 0 0";
%pos = VectorAdd(%oldPos, VectorScale(%vec, %y));

%followPos = %pos;
%pos = getWords(%this.getTransform(), 0, 2);
%vec = VectorSub(%followPos, %pos);
%len = VectorLen(%vec);

%this.setAimObject(%player);
if (%len > getWord(%this.boundingBox, 1))
%this.setMoveDestination(%followPos, false);
%this.schedule(30,think);
}

3. In starter.fps/server/scripts/health.cs, change function HealthPatch::onCollision so that it looks like this:

function HealthPatch::onCollision(%this,%obj,%col)
{
// Apply health to colliding object if it needs it.
// Works for all shapebase objects.
if (%col.getState() !$= "Dead" ) {
%col.applyRepair(%this.repairAmount);
%obj.respawn();
if (%col.client)
messageClient(%col.client, 'MsgHealthPatchUsed', '\c2Health Patch Applied');
}

// Create the player object
%aiplayer = new AIPlayer() {
dataBlock = DemoPlayer;
};
MissionCleanup.add(%aiplayer);

// get the last follower
%player = %col;
while (isObject(%player)) {
if (isObject(%player.follower))
%player = %player.follower;
else break;
}

%player.follower = %aiplayer;
%y = getWord(%player.getDataBlock().boundingBox, 1);
%pos = getWords(%player.getTransform(), 0, 2);
%oldPos = %pos;
%vec = " 0 -1 0";
%vec = MatrixMulVector(%player.getTransform(), %vec);
%pos = "0 0 0";
%pos = VectorAdd(%oldPos, VectorScale(%vec, %y));

%aiplayer.setTransform(%pos);
%aiplayer.setMoveSpeed(1.0);
%aiplayer.followPlayer(%player);
}

Add a bunch of healthPatches to a mission file then go into the game and pick them all up. You can see the bots following their leader. Enjoy.

Robert Brower