| … | |
… | |
| 489 | // can be used as a single statement, but both iterate macros |
489 | // can be used as a single statement, but both iterate macros |
| 490 | // invocations must not be followed by a ";" |
490 | // invocations must not be followed by a ";" |
| 491 | // see common/los.C for usage example |
491 | // see common/los.C for usage example |
| 492 | // the walk will be ordered, outer loop x, inner loop y |
492 | // the walk will be ordered, outer loop x, inner loop y |
| 493 | // m will be set to the map (or 0), nx, ny to the map coord, dx, dy to the offset relative to op |
493 | // m will be set to the map (or 0), nx, ny to the map coord, dx, dy to the offset relative to op |
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|
494 | // "continue" will skip to the next space |
| 494 | #define ordered_mapwalk_begin(op,dx0,dy0,dx1,dy1) \ |
495 | #define ordered_mapwalk_begin(op,dx0,dy0,dx1,dy1) \ |
| 495 | for (int dx = (dx0); dx <= (dx1); ++dx) \ |
496 | for (int dx = (dx0); dx <= (dx1); ++dx) \ |
| 496 | { \ |
497 | { \ |
| 497 | sint16 nx, ny; \ |
498 | sint16 nx, ny; \ |
| 498 | maptile *m = 0; \ |
499 | maptile *m = 0; \ |
| … | |
… | |
| 514 | } |
515 | } |
| 515 | |
516 | |
| 516 | // loop over every space in the given maprect, |
517 | // loop over every space in the given maprect, |
| 517 | // setting m, nx, ny to the map and -coordinate and dx, dy to the offste relative to dx0,dy0 |
518 | // setting m, nx, ny to the map and -coordinate and dx, dy to the offste relative to dx0,dy0 |
| 518 | // the iterator code must be a single statement following this macro call, similar to "if" |
519 | // the iterator code must be a single statement following this macro call, similar to "if" |
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|
520 | // "continue" will skip to the next space |
| 519 | #define rect_mapwalk(rect,dx0,dy0) \ |
521 | #define rect_mapwalk(rect,dx0,dy0) \ |
| 520 | statementvar (maptile *, m, (rect)->m) \ |
522 | statementvar (maptile *, m, (rect)->m) \ |
| 521 | for (int nx = (rect)->x0; nx < (rect)->x1; ++nx) \ |
523 | for (int nx = (rect)->x0; nx < (rect)->x1; ++nx) \ |
| 522 | for (int ny = (rect)->y0; ny < (rect)->y1; ++ny) \ |
524 | for (int ny = (rect)->y0; ny < (rect)->y1; ++ny) \ |
| 523 | statementvar (int, dx, nx + (rect)->dx - (dx0)) \ |
525 | statementvar (int, dx, nx + (rect)->dx - (dx0)) \ |
| 524 | statementvar (int, dy, ny + (rect)->dy - (dy0)) |
526 | statementvar (int, dy, ny + (rect)->dy - (dy0)) |
| 525 | |
527 | |
| 526 | // same as above, but the walk will not follow any particular |
528 | // same as above, but the walk will not follow any particular |
| 527 | // order (unorded), but is likely faster. |
529 | // order (unorded), but is likely faster. |
| 528 | // m will be set to the map (never 0!), nx, ny to the map coord, dx, dy to the offset relative to op |
530 | // m will be set to the map (never 0!), nx, ny to the map coord, dx, dy to the offset relative to op |
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|
531 | // "continue" will skip to the next space |
| 529 | #define unordered_mapwalk(op,dx0,dy0,dx1,dy1) \ |
532 | #define unordered_mapwalk(op,dx0,dy0,dx1,dy1) \ |
| 530 | for (maprect *r_e_c_t = (op)->map->split_to_tiles ( \ |
533 | for (maprect *r_e_c_t = (op)->map->split_to_tiles ( \ |
| 531 | (op)->x + (dx0) , (op)->y + (dy0) , \ |
534 | (op)->x + (dx0) , (op)->y + (dy0) , \ |
| 532 | (op)->x + (dx1) + 1, (op)->y + (dy1) + 1); \ |
535 | (op)->x + (dx1) + 1, (op)->y + (dy1) + 1); \ |
| 533 | r_e_c_t->m; \ |
536 | r_e_c_t->m; \ |
