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7b4237c692
* Implements usage of the REVERSE_DIR macro throughout the code. (#77122) ## About The Pull Request Replaces a ton of `turn(dir, 180)` calls with the aforementioned macro. ## Why It's Good For The Game Afaik, `REVERSE_DIR` was coded to be faster than the classic `turn(dir, 180)` call, being a simple set of binary operations. To sum it up, micro optimization. ## Changelog N/A * Implements usage of the REVERSE_DIR macro throughout the code. --------- Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>
48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
// Byond direction defines, because I want to put them somewhere.
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// #define NORTH 1
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// #define SOUTH 2
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// #define EAST 4
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// #define WEST 8
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/// North direction as a string "[1]"
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#define TEXT_NORTH "[NORTH]"
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/// South direction as a string "[2]"
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#define TEXT_SOUTH "[SOUTH]"
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/// East direction as a string "[4]"
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#define TEXT_EAST "[EAST]"
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/// West direction as a string "[8]"
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#define TEXT_WEST "[WEST]"
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//dir macros
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///Returns true if the dir is diagonal, false otherwise
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#define ISDIAGONALDIR(d) (d&(d-1))
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///True if the dir is north or south, false therwise
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#define NSCOMPONENT(d) (d&(NORTH|SOUTH))
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///True if the dir is east/west, false otherwise
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#define EWCOMPONENT(d) (d&(EAST|WEST))
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///Flips the dir for north/south directions
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#define NSDIRFLIP(d) (d^(NORTH|SOUTH))
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///Flips the dir for east/west directions
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#define EWDIRFLIP(d) (d^(EAST|WEST))
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/// Inverse direction, taking into account UP|DOWN if necessary.
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#define REVERSE_DIR(dir) ( ((dir & 85) << 1) | ((dir & 170) >> 1) )
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/// Create directional subtypes for a path to simplify mapping.
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#define MAPPING_DIRECTIONAL_HELPERS(path, offset) ##path/directional/north {\
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dir = NORTH; \
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pixel_y = offset; \
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} \
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##path/directional/south {\
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dir = SOUTH; \
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pixel_y = -offset; \
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} \
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##path/directional/east {\
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dir = EAST; \
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pixel_x = offset; \
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} \
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##path/directional/west {\
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dir = WEST; \
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pixel_x = -offset; \
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}
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