Stacking a SplineMotion and a RotoZoom in an at_list crashes.

[Spiky Caterpillar]

A linear SplineMotion between x,y,anchor,anchor tuples will crash if combined with a RotoZoom in an at_list; both splinemotion and rotozoom are fine by themselves. I haven't tested it on more complicated SplineMotions.

[Spiky Caterpillar (spikycaterpillar)]

Here's a rather ugly workaround. Bounds-checking floats to decide whether they're multipliers or not is Just Plain Wrong, though, and I really should figure out how to do it Right instead. Without the bounds check, it occasionally tries to fit infinity into a long (if the coordinates have been promoted to floats.)

[Tom Rothamel (renpytom)]

This will be fixed in Ren'Py 6.10.0.