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-rwxr-xr-xengine/overworld/cut.asm125
1 files changed, 65 insertions, 60 deletions
diff --git a/engine/overworld/cut.asm b/engine/overworld/cut.asm
index 293daee7..2056bbb0 100755
--- a/engine/overworld/cut.asm
+++ b/engine/overworld/cut.asm
@@ -3,21 +3,21 @@ UsedCut: ; ef54 (3:6f54)
ld [wActionResultOrTookBattleTurn], a ; initialise to failure value
ld a, [W_CURMAPTILESET]
and a ; OVERWORLD
- jr z, .asm_ef6b
+ jr z, .overworld
cp GYM
- jr nz, .asm_ef77
+ jr nz, .nothingToCut
ld a, [wTileInFrontOfPlayer]
cp $50 ; gym cut tree
- jr nz, .asm_ef77
- jr .asm_ef82
-.asm_ef6b
+ jr nz, .nothingToCut
+ jr .canCut
+.overworld
dec a
ld a, [wTileInFrontOfPlayer]
cp $3d ; cut tree
- jr z, .asm_ef82
+ jr z, .canCut
cp $52 ; grass
- jr z, .asm_ef82
-.asm_ef77
+ jr z, .canCut
+.nothingToCut
ld hl, .NothingToCutText
jp PrintText
@@ -25,9 +25,9 @@ UsedCut: ; ef54 (3:6f54)
TX_FAR _NothingToCutText
db "@"
-.asm_ef82
+.canCut
ld [wCutTile], a
- ld a, $1
+ ld a, 1
ld [wActionResultOrTookBattleTurn], a ; used cut
ld a, [wWhichPokemon]
ld hl, wPartyMonNicks
@@ -37,7 +37,7 @@ UsedCut: ; ef54 (3:6f54)
call GBPalWhiteOutWithDelay3
call ClearSprites
call RestoreScreenTilesAndReloadTilePatterns
- ld a, $90
+ ld a, SCREEN_HEIGHT_PIXELS
ld [hWY], a
call Delay3
call LoadGBPal
@@ -53,11 +53,11 @@ UsedCut: ; ef54 (3:6f54)
res 6, [hl]
ld a, $ff
ld [wUpdateSpritesEnabled], a
- call AnimateCutTree
+ call InitCutAnimOAM
ld de, CutTreeBlockSwaps
- call Func_f09f
+ call ReplaceTreeTileBlock
call RedrawMapView
- callba Func_79e96
+ callba AnimCut
ld a, $1
ld [wUpdateSpritesEnabled], a
ld a, SFX_CUT
@@ -71,14 +71,15 @@ UsedCutText: ; eff2 (3:6ff2)
TX_FAR _UsedCutText
db "@"
-AnimateCutTree: ; eff7 (3:6ff7)
+InitCutAnimOAM: ; eff7 (3:6ff7)
xor a
ld [wWhichAnimationOffsets], a
ld a, $e4
ld [rOBP1], a
ld a, [wCutTile]
cp $52
- jr z, .asm_f020
+ jr z, .grass
+; tree
ld de, Overworld_GFX + $2d0 ; cuttable tree sprite top row
ld hl, vChars1 + $7c0
ld bc, (BANK(Overworld_GFX) << 8) + $02
@@ -87,45 +88,45 @@ AnimateCutTree: ; eff7 (3:6ff7)
ld hl, vChars1 + $7e0
ld bc, (BANK(Overworld_GFX) << 8) + $02
call CopyVideoData
- jr WriteCutTreeBoulderDustAnimationOAMBlock
-.asm_f020
+ jr WriteCutOrBoulderDustAnimationOAMBlock
+.grass
ld hl, vChars1 + $7c0
- call LoadCutTreeAnimationTilePattern
+ call LoadCutGrassAnimationTilePattern
ld hl, vChars1 + $7d0
- call LoadCutTreeAnimationTilePattern
+ call LoadCutGrassAnimationTilePattern
ld hl, vChars1 + $7e0
- call LoadCutTreeAnimationTilePattern
+ call LoadCutGrassAnimationTilePattern
ld hl, vChars1 + $7f0
- call LoadCutTreeAnimationTilePattern
- call WriteCutTreeBoulderDustAnimationOAMBlock
+ call LoadCutGrassAnimationTilePattern
+ call WriteCutOrBoulderDustAnimationOAMBlock
ld hl, wOAMBuffer + $93
- ld de, $4
+ ld de, 4
ld a, $30
ld c, e
-.asm_f044
+.loop
ld [hl], a
add hl, de
xor $60
dec c
- jr nz, .asm_f044
+ jr nz, .loop
ret
-LoadCutTreeAnimationTilePattern: ; f04c (3:704c)
+LoadCutGrassAnimationTilePattern: ; f04c (3:704c)
ld de, AnimationTileset2 + $60 ; tile depicting a leaf
ld bc, (BANK(AnimationTileset2) << 8) + $01
jp CopyVideoData
-WriteCutTreeBoulderDustAnimationOAMBlock: ; f055 (3:7055)
- call GetCutTreeBoulderDustAnimationOffsets
+WriteCutOrBoulderDustAnimationOAMBlock: ; f055 (3:7055)
+ call GetCutOrBoulderDustAnimationOffsets
ld a, $9
- ld de, CutTreeBoulderDustAnimationTilesAndAttributes
+ ld de, CutOrBoulderDustAnimationTilesAndAttributes
jp WriteOAMBlock
-CutTreeBoulderDustAnimationTilesAndAttributes: ; f060 (3:7060)
+CutOrBoulderDustAnimationTilesAndAttributes: ; f060 (3:7060)
db $FC,$10,$FD,$10
db $FE,$10,$FF,$10
-GetCutTreeBoulderDustAnimationOffsets: ; f068 (3:7068)
+GetCutOrBoulderDustAnimationOffsets: ; f068 (3:7068)
ld hl, wSpriteStateData1 + 4
ld a, [hli] ; player's sprite screen Y position
ld b, a
@@ -140,10 +141,10 @@ GetCutTreeBoulderDustAnimationOffsets: ; f068 (3:7068)
ld d, $0 ; de holds direction (00: down, 02: up, 04: left, 06: right)
ld a, [wWhichAnimationOffsets]
and a
- ld hl, CutTreeAnimationOffsets
- jr z, .asm_f084
+ ld hl, CutAnimationOffsets
+ jr z, .next
ld hl, BoulderDustAnimationOffsets
-.asm_f084
+.next
add hl, de
ld e, [hl]
inc hl
@@ -156,7 +157,7 @@ GetCutTreeBoulderDustAnimationOffsets: ; f068 (3:7068)
ld c, a
ret
-CutTreeAnimationOffsets: ; f08f (3:708f)
+CutAnimationOffsets: ; f08f (3:708f)
; Each pair represents the x and y pixels offsets from the player of where the cut tree animation should be drawn
db 8, 36 ; player is facing down
db 8, 4 ; player is facing up
@@ -171,75 +172,79 @@ BoulderDustAnimationOffsets: ; f097 (3:7097)
db -24, 20 ; player is facing left
db 40, 20 ; player is facing right
-Func_f09f: ; f09f (3:709f)
+ReplaceTreeTileBlock: ; f09f (3:709f)
+; Determine the address of the tile block that contains the tile in front of the
+; player (i.e. where the tree is) and replace it with the corresponding tile
+; block that doesn't have the tree.
push de
ld a, [W_CURMAPWIDTH]
- add $6
+ add 6
ld c, a
- ld b, $0
- ld d, $0
+ ld b, 0
+ ld d, 0
ld hl, wCurrentTileBlockMapViewPointer
ld a, [hli]
ld h, [hl]
ld l, a
add hl, bc
- ld a, [wSpriteStateData1 + 9]
+ ld a, [wSpriteStateData1 + 9] ; player sprite's facing direction
and a
jr z, .down
cp SPRITE_FACING_UP
jr z, .up
cp SPRITE_FACING_LEFT
jr z, .left
+; right
ld a, [W_XBLOCKCOORD]
and a
- jr z, .asm_f0e0
- jr .asm_f0ec
+ jr z, .centerTileBlock
+ jr .rightOfCenter
.down
ld a, [W_YBLOCKCOORD]
and a
- jr z, .asm_f0e0
- jr .asm_f0df
+ jr z, .centerTileBlock
+ jr .belowCenter
.up
ld a, [W_YBLOCKCOORD]
and a
- jr z, .asm_f0e1
- jr .asm_f0e0
+ jr z, .aboveCenter
+ jr .centerTileBlock
.left
ld a, [W_XBLOCKCOORD]
and a
- jr z, .asm_f0e6
- jr .asm_f0e0
-.asm_f0df
+ jr z, .leftOfCenter
+ jr .centerTileBlock
+.belowCenter
add hl, bc
-.asm_f0e0
+.centerTileBlock
add hl, bc
-.asm_f0e1
+.aboveCenter
ld e, $2
add hl, de
- jr .asm_f0f0
-.asm_f0e6
+ jr .next
+.leftOfCenter
ld e, $1
add hl, bc
add hl, de
- jr .asm_f0f0
-.asm_f0ec
+ jr .next
+.rightOfCenter
ld e, $3
add hl, bc
add hl, de
-.asm_f0f0
+.next
pop de
ld a, [hl]
ld c, a
-.asm_f0f3
+.loop ; find the matching tile block in the array
ld a, [de]
inc de
inc de
cp $ff
ret z
cp c
- jr nz, .asm_f0f3
+ jr nz, .loop
dec de
- ld a, [de]
+ ld a, [de] ; replacement tile block from matching array entry
ld [hl], a
ret