Fixed Pop-Up Spikes on FOFs hurt you if you jump on them while they're in the ground.

[SonicX8000]

First pair of Pop-Up Spikes are on a FOF. If you jump onto them while they are in the ground... you get poked.

Second pair of Pop-Up Spikes are on normal ground. If you jump on them while they're in the ground it doesn't poke you.
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These spikes are on a FOF. If they're in the ground you can safely walk across them but if you jump while they're in the ground you get poked.

Methinks that Pop-Up Spikes don't like FOFs.

 

[Monster Iestyn]

As I've already mentioned on IRC, I know what the cause of this is; the spikes use P_CheckPosition while on FOFs, yet some of the collision code for spikes against other things assumes it's used only when popping up for the retractable versions?

I know the direction to fix this in, but it appears it breaks other things about spikes when I try. Got to love SRB2's messy physics!

 

[Monster Iestyn]

Eh, found another way around the issue; it's still messy, but it works properly now I suppose?