[Add] Simple ai for mission pilots that need to escort the player.

scripts/ai/escort_player.lua

@@ -0,0 +1,28 @@
+include("../scripts/tpl/generic.lua")
+
+-- Settings
+armour_run    = 40
+armour_return = 70
+aggressive    = true
+
+function create()
+  -- Escorts have nothing on them.
+end
+
+-- When pilot is idle she'll escort the player.
+function idle()
+  ai.pushtask(0, "escort", ai.getPlayer())
+end
+
+-- Escort the target.
+function escort()
+  target = ai.targetid()
+
+  dir = ai.face(target)
+  dist = ai.dist(ai.pos(target))
+
+  if dir < 10 and dist > 200 then
+    ai.accel()
+  end
+end
+