fix occasional issue where deleting the particle RAYT is detecting wo…

…uld delete the particle it is sparking instead

only happened when unpaused and only if the spark was in a certain state. part_change_type was called with the wrong coordinates, which confused pmap and put the sparked particle on top of pmap in the detected particle for a frame

src/simulation/elements/RAYT.cpp

@@ -130,7 +130,7 @@ int Element_RAYT::update(UPDATE_FUNC_ARGS)
 						{
 							parts[ID(r)].life = 4;
 							parts[ID(r)].ctype = TYP(r);
-							sim->part_change_type(ID(r), xCurrent, yCurrent, PT_SPRK);
+							sim->part_change_type(ID(r), x + rx, y + ry, PT_SPRK);
 							break;
 						}
 						// room for more conditions here.