Improve a bit performance in bl_getall_area.

1 files changed, 73 insertions, 27 deletions

diff --git a/src/map/map.c b/src/map/map.c
index c5ea7c1f3..d6425b94e 100644
--- a/src/map/map.c
+++ b/src/map/map.c
@@ -683,49 +683,95 @@ static int bl_getall_area(int type, int m, int x0, int y0, int x1, int y1, int (
 	x1 = min(x1, map->list[m].xs - 1);
 	y1 = min(y1, map->list[m].ys - 1);
 
-	for (by = y0 / BLOCK_SIZE; by <= y1 / BLOCK_SIZE; by++) {
-		for (bx = x0 / BLOCK_SIZE; bx <= x1 / BLOCK_SIZE; bx++) {
-			if (type&~BL_MOB) {
-				for (bl = map->list[m].block[bx + by * map->list[m].bxs]; bl != NULL; bl = bl->next) {
-					if (bl->type&type && bl->x >= x0 && bl->x <= x1 && bl->y >= y0 && bl->y <= y1) {
-						if( map->bl_list_count >= map->bl_list_size )
-							map_bl_list_expand();
-						if (func) {
-							va_start(args, func);
-							if (func(bl, args)) {
+	{
+		const int x0b = x0 / BLOCK_SIZE;
+		const int x1b = x1 / BLOCK_SIZE;
+		const int y0b = y0 / BLOCK_SIZE;
+		const int y1b = y1 / BLOCK_SIZE;
+		const struct map_data *const listm = &map->list[m];
+		const int bxs0 = listm->bxs;
+
+		// duplication for better performance
+		if (func != NULL) {
+			if (type & ~BL_MOB) {
+				for (by = y0b; by <= y1b; by++) {
+					const int bxs = by * bxs0;
+					for (bx = x0b; bx <= x1b; bx++) {
+						for (bl = listm->block[bx + bxs]; bl != NULL; bl = bl->next) {
+							const int x = bl->x;
+							const int y = bl->y;
+							if (bl->type & type && x >= x0 && x <= x1 && y >= y0 && y <= y1) {
+								va_start(args, func);
+								if (func(bl, args)) {
+									if (map->bl_list_count >= map->bl_list_size)
+										map_bl_list_expand();
+									map->bl_list[map->bl_list_count++] = bl;
+									found++;
+								}
+								va_end(args);
+							}
+						}
+					}
+				}
+			}
+			if (type & BL_MOB) {
+				for (by = y0b; by <= y1b; by++) {
+					const int bxs = by * bxs0;
+					for (bx = x0b; bx <= x1b; bx++) {
+						for (bl = listm->block_mob[bx + bxs]; bl != NULL; bl = bl->next) {
+							const int x = bl->x;
+							const int y = bl->y;
+							if (x >= x0 && x <= x1 && y >= y0 && y <= y1) {
+								va_start(args, func);
+								if (func(bl, args)) {
+									if (map->bl_list_count >= map->bl_list_size)
+										map_bl_list_expand();
+									map->bl_list[map->bl_list_count++] = bl;
+									found++;
+								}
+								va_end(args);
+							}
+						}
+					}
+				}
+			}
+		} else {  // func != NULL
+			if (type & ~BL_MOB) {
+				for (by = y0b; by <= y1b; by++) {
+					const int bxs = by * bxs0;
+					for (bx = x0b; bx <= x1b; bx++) {
+						for (bl = listm->block[bx + bxs]; bl != NULL; bl = bl->next) {
+							const int x = bl->x;
+							const int y = bl->y;
+							if (bl->type & type && x >= x0 && x <= x1 && y >= y0 && y <= y1) {
+								if (map->bl_list_count >= map->bl_list_size)
+									map_bl_list_expand();
 								map->bl_list[map->bl_list_count++] = bl;
 								found++;
 							}
-							va_end(args);
-						} else {
-							map->bl_list[map->bl_list_count++] = bl;
-							found++;
 						}
 					}
 				}
 			}
-			if (type&BL_MOB) { // TODO: fix this code duplication
-				for (bl = map->list[m].block_mob[bx + by * map->list[m].bxs]; bl != NULL; bl = bl->next) {
-					if (bl->x >= x0 && bl->x <= x1 && bl->y >= y0 && bl->y <= y1) {
-						if( map->bl_list_count >= map->bl_list_size )
-							map_bl_list_expand();
-						if (func) {
-							va_start(args, func);
-							if (func(bl, args)) {
+			if (type & BL_MOB) {
+				for (by = y0b; by <= y1b; by++) {
+					const int bxs = by * bxs0;
+					for (bx = x0b; bx <= x1b; bx++) {
+						for (bl = listm->block_mob[bx + bxs]; bl != NULL; bl = bl->next) {
+							const int x = bl->x;
+							const int y = bl->y;
+							if (x >= x0 && x <= x1 && y >= y0 && y <= y1) {
+								if (map->bl_list_count >= map->bl_list_size)
+									map_bl_list_expand();
 								map->bl_list[map->bl_list_count++] = bl;
 								found++;
 							}
-							va_end(args);
-						} else {
-							map->bl_list[map->bl_list_count++] = bl;
-							found++;
 						}
 					}
 				}
 			}
 		}
 	}
-
 	return found;
 }