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Avoid more redundant code and diffs
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@ -630,40 +630,36 @@ ENDM
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## `GetForestTreeFrame` works, but it's still bad
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In [engine/tilesets/tileset_anims.asm](/engine/tilesets/tileset_anims.asm):
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```asm
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GetForestTreeFrame:
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; Return 0 if a is even, or 2 if odd.
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and a
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jr z, .even
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cp 1
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jr z, .odd
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cp 2
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jr z, .even
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cp 3
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jr z, .odd
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cp 4
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jr z, .even
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cp 5
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jr z, .odd
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cp 6
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jr z, .even
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.odd
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ld a, 2
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scf
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ret
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.even
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xor a
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ret
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```
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The routine `GetForestTreeFrame` in [engine/tilesets/tileset_anims.asm](/engine/tilesets/tileset_anims.asm) is hilariously inefficient.
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**Fix:**
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Edit `GetForestTreeFrame`:
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```asm
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GetForestTreeFrame:
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; Return 0 if a is even, or 2 if odd.
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and 1
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add a
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GetForestTreeFrame:
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; Return 0 if a is even, or 2 if odd.
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- and a
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- jr z, .even
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- cp 1
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- jr z, .odd
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- cp 2
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- jr z, .even
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- cp 3
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- jr z, .odd
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- cp 4
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- jr z, .even
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- cp 5
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- jr z, .odd
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- cp 6
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- jr z, .even
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-.odd
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- ld a, 2
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- scf
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- ret
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-.even
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- xor a
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+ and 1
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+ add a
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ret
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```
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