The use of the TWOSIDED property of a linedef in the DOOM engine is somewhat redundant (as the value can be determined fairly trivially). However, some mods exploited this by purposefully marking non-twosided lines as such for various reasons. Logically, the twosided flag should mean literally that and not any other derived meaning.
This flag has now internalized into the engine and it is NOT available via DMU. Instead, to support the various hacks used with the original game(s) new flags will be introduced to rationalize this behavior.
Added by danij over 16 years ago
Added by danij over 16 years ago
The use of the TWOSIDED property of a linedef in the DOOM engine is somewhat redundant (as the value can be determined fairly trivially). However, some mods exploited this by purposefully marking non-twosided lines as such for various reasons. Logically, the twosided flag should mean literally that and not any other derived meaning.
This flag has now internalized into the engine and it is NOT available via DMU. Instead, to support the various hacks used with the original game(s) new flags will be introduced to rationalize this behavior.