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ZandarioandGitHub
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<!-- Write **BELOW** The Headers and **ABOVE** The comments else it may not be viewable. --> <!-- You can view Contributing.MD for a detailed description of the pull request process. --> ## About The Pull Request Finally figured out something I liked for bitmask smoothed AO. Yes I profiled it and this is indeed faster.
69 lines
2.5 KiB
Plaintext
69 lines
2.5 KiB
Plaintext
/**
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*! SSao
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*/
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#define WALL_AO_ALPHA 80
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#define Z_AO_ALPHA 160
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#define AO_UPDATE_NONE 0
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#define AO_UPDATE_OVERLAY 1
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#define AO_UPDATE_REBUILD 2
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/// If ao_junction equals this, no AO shadows are present.
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#define AO_ALL_NEIGHBORS 255
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/**
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* Define for getting a bitfield of adjacent turfs that meet a condition.
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*
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* Arguments:
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* - ORIGIN - The atom to step from,
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* - VAR - The var to write the bitfield to.
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* - TVAR - The temporary turf variable to use.
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* - FUNC - An additional function used to validate the turf found in each direction. Generally should reference TVAR.
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*
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* Example:
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* - var/our_junction = 0
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* - var/turf/T
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* - CALCULATE_JUNCTIONS(src, our_junction, T, isopenturf(T))
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* - // isopenturf(T) NEEDS to be in the macro call since its nested into for loops.
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*
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* NOTICE:
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* - This macro used to be CALCULATE_NEIGHBORS.
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* - It has been renamed to avoid conflicts and confusions with other codebases.
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*/
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#define CALCULATE_JUNCTIONS(ORIGIN, VAR, TVAR, FUNC) \
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for (var/_tdir in GLOB.cardinal) { \
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TVAR = get_step(ORIGIN, _tdir); \
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if ((TVAR) && (FUNC)) { \
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VAR |= _tdir; \
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} \
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} \
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if (VAR & NORTH_JUNCTION) { \
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if (VAR & WEST_JUNCTION) { \
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TVAR = get_step(ORIGIN, NORTHWEST); \
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if (FUNC) { \
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VAR |= NORTHWEST_JUNCTION; \
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} \
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} \
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if (VAR & EAST_JUNCTION) { \
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TVAR = get_step(ORIGIN, NORTHEAST); \
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if (FUNC) { \
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VAR |= NORTHEAST_JUNCTION; \
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} \
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} \
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} \
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if (VAR & SOUTH_JUNCTION) { \
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if (VAR & WEST_JUNCTION) { \
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TVAR = get_step(ORIGIN, SOUTHWEST); \
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if (FUNC) { \
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VAR |= SOUTHWEST_JUNCTION; \
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} \
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} \
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if (VAR & EAST_JUNCTION) { \
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TVAR = get_step(ORIGIN, SOUTHEAST); \
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if (FUNC) { \
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VAR |= SOUTHEAST_JUNCTION; \
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} \
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} \
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}
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