invisigun-heroes: Get nick name from environment

Since the player's nick name is retrieved via Steam we don't get any
nick name via the DRM-free version.

To cope with this, the nick name is now determined by looking at the
INVISIGUN_NICKNAME and USER if the former is not defined. If people
don't want their local user name to be displayed to others, there is a
setting in the options menu to disable this behaviour.

The reason why I patched the call to Tools::FilterText (which is used
sanitise the nick name) instead of a more specific one is because the
more specific one is optimized out in the build:

  IL_0000:  ldarg.0
  IL_0001:  call string class Tools::'?????????'(valuetype '?????????')
  IL_0006:  call string class Tools::FilterText(string)
  IL_000b:  ret

So the only way to patch out the call in IL_0001 would be to use
addresses/offsets, which is bound to break in the next upstream version.

However, since the output is essentially wrapped in Tools::FilterText, I
decided to patch that one instead and we simply throw away the argument.

Signed-off-by: aszlig <aszlig@nix.build>

0 files changed, 0 insertions, 0 deletions