[DECOHack] Global Labels for Filled State Sets

[MTrop]

The state fill <INTEGER> blocks can fill arbitrary states, but if you have a large range of freed states, it makes little sense to care about the index, especially if it may be filled by the time this clause is reached in code.

Proposal:

auto state fill <IDENTIFIER>
{
  // state code...
}

The first index of the filled block will be assigned <IDENTIFIER>, which is checked for non-use. If not used yet, it is assigned and available to the rest of DECOHack from that point forward. Label references can now have a scope outside Things and Weapons.

But how to refer to these later? Maybe take a page from Issue https://github.com/MTrop/DoomTools/issues/31:

auto state <IDENTIFIER>

For example:

A_RandomJump(auto state runcycle2, 128)
goto auto state resurrect

This will make the reference clear in Things and Weapons, to ensure label references do not get shadowed.

[MTrop]

This may be obsoleted by some other plans, but I'll tag this with "low priority" as it is not a current concern.