Revert broken optimization :/

1 files changed, 9 insertions, 14 deletions

diff --git a/Allow-tiles-to-have-different-attributes-in-different-blocks-(including-X-and-Y-flip).md b/Allow-tiles-to-have-different-attributes-in-different-blocks-(including-X-and-Y-flip).md
index 2b18ff7..6f5119a 100644
--- a/Allow-tiles-to-have-different-attributes-in-different-blocks-(including-X-and-Y-flip).md
+++ b/Allow-tiles-to-have-different-attributes-in-different-blocks-(including-X-and-Y-flip).md
@@ -432,15 +432,15 @@ Anyway, `LoadMapPart` calls `LoadMetatiles` to load certain data from the \*_met
 -	; This is buggy; it wraps around past 128 blocks.
 -	; To fix, uncomment the line below.
 -	add a ; Comment or delete this line to fix the above bug.
- 	ld l, a
- 	ld h, 0
+-	ld l, a
+-	ld h, 0
 -	; add hl, hl
-+	add hl, hl
- 	add hl, hl
- 	add hl, hl
- 	add hl, hl
+-	add hl, hl
+-	add hl, hl
+-	add hl, hl
++	ld h, a
  	ld a, [wTilesetBlocksAddress]
- 	add l
+-	add l
  	ld l, a
  	ld a, [wTilesetBlocksAddress + 1]
  	adc h
@@ -494,7 +494,7 @@ Anyway, `LoadMapPart` calls `LoadMetatiles` to load certain data from the \*_met
 
 This routine copies data from \*_metatiles.bin (pointed to by `[wTilesetBlocksAddress]`) into `wSurroundingTiles`. We've made two small changes to it.
 
-One, [the bug that only allowed 128 blocks](../blob/master/docs/bugs_and_glitches.md#loadmetatiles-wraps-around-past-128-blocks) is fixed, since you'll probably need 256 to take advantage of this block attribute system.
+One, [the bug that only allowed 128 blocks](../blob/master/docs/bugs_and_glitches.md#loadmetatiles-wraps-around-past-128-blocks) is fixed (more efficiently than the suggested method), since you'll probably need 256 to take advantage of this block attribute system.
 
 Two, tile IDs in \*_metatiles.bin have their high bit masked out. That used to be done with `res 7` in `SwapTextboxPalettes` and `ScrollBGMapPalettes`, but we deleted those.
 
@@ -534,13 +534,8 @@ Two, tile IDs in \*_metatiles.bin have their high bit masked out. That used to b
 +	ld e, l
 +	ld d, h
 +	; Set hl to the address of the current metatile attribute data ([wTilesetAttributesAddress] + (a) tiles).
-+	ld l, a
-+	ld h, 0
-+rept 4
-+	add hl, hl
-+endr
++	ld h, a
 +	ld a, [wTilesetAttributesAddress]
-+	add l
 +	ld l, a
 +	ld a, [wTilesetAttributesAddress + 1]
 +	adc h