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authorRangi <remy.oukaour+rangi42@gmail.com>2020-07-07 18:50:58 -0400
committerRangi <remy.oukaour+rangi42@gmail.com>2020-07-07 19:43:11 -0400
commitbbf2f51a02b2544f1bef32a5868503b474ae2fef (patch)
treed73507228a57e4f3cece2fb93fe7df3a9439553f /home/tilemap.asm
parent51ac538c25f8c0a6d88101569a17f02d09855d31 (diff)
Move all code out of home.asm into home/
This results in 64 home/*.asm files, comparable to pokecrystal's 57.
Diffstat (limited to 'home/tilemap.asm')
-rw-r--r--home/tilemap.asm61
1 files changed, 61 insertions, 0 deletions
diff --git a/home/tilemap.asm b/home/tilemap.asm
new file mode 100644
index 00000000..afee7097
--- /dev/null
+++ b/home/tilemap.asm
@@ -0,0 +1,61 @@
+FillMemory::
+; Fill bc bytes at hl with a.
+ push de
+ ld d, a
+.loop
+ ld a, d
+ ld [hli], a
+ dec bc
+ ld a, b
+ or c
+ jr nz, .loop
+ pop de
+ ret
+
+UncompressSpriteFromDE::
+; Decompress pic at a:de.
+ ld hl, wSpriteInputPtr
+ ld [hl], e
+ inc hl
+ ld [hl], d
+ jp UncompressSpriteData
+
+SaveScreenTilesToBuffer2::
+ hlcoord 0, 0
+ ld de, wTileMapBackup2
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ call CopyData
+ ret
+
+LoadScreenTilesFromBuffer2::
+ call LoadScreenTilesFromBuffer2DisableBGTransfer
+ ld a, 1
+ ldh [hAutoBGTransferEnabled], a
+ ret
+
+; loads screen tiles stored in wTileMapBackup2 but leaves hAutoBGTransferEnabled disabled
+LoadScreenTilesFromBuffer2DisableBGTransfer::
+ xor a
+ ldh [hAutoBGTransferEnabled], a
+ ld hl, wTileMapBackup2
+ decoord 0, 0
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ call CopyData
+ ret
+
+SaveScreenTilesToBuffer1::
+ hlcoord 0, 0
+ ld de, wTileMapBackup
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ jp CopyData
+
+LoadScreenTilesFromBuffer1::
+ xor a
+ ldh [hAutoBGTransferEnabled], a
+ ld hl, wTileMapBackup
+ decoord 0, 0
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ call CopyData
+ ld a, 1
+ ldh [hAutoBGTransferEnabled], a
+ ret