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Some minor optimization to the update code and check for a mushroom in the tile we are moving into and the next tile when we need to decide to change direction. This better reproduces the real game's behaviour.

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Jeremy Rand 2020-09-23 22:42:02 -04:00
parent 1dfbe8156a
commit 69efb23800
1 changed files with 48 additions and 51 deletions
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99
BuGS/gameSegments.s
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@ -304,7 +304,7 @@ updateSegmentLeftFast entry
lda segmentTileOffsetsUL,y
sta segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
jmp updateSegmentLeftFast_done
rts
updateSegmentLeftFast_nextOffset anop
cmp #1
@ -315,28 +315,30 @@ updateSegmentLeftFast_nextOffset anop
lda tileLeft,x
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
jmp updateSegmentLeftFast_done
rts
updateSegmentLeftFast_nextOffset2 anop
cmp #3
beq updateSegmentLeftFast_checkDir
jmp updateSegmentLeftFast_done
rts
updateSegmentLeftFast_checkDir anop
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_POISONED_HEAD
beq updateSegmentLeftFast_changeDir
lda segmentTileOffsetsUL,y
tax
ldx segmentTileOffsetsUL,y
cpx #LHS_FIRST_TILE_OFFSET
bge updateSegmentLeftFast_changeDir
lda tileType,x
bne updateSegmentLeftFast_checkPoison
lda tileLeft,x
cmp #LHS_FIRST_TILE_OFFSET
bge updateSegmentLeftFast_changeDir
tax
lda tileType,x
bne updateSegmentLeftFast_checkPoison
jmp updateSegmentLeftFast_done
rts
updateSegmentLeftFast_checkPoison anop
cmp #TILE_POISON_MUSHROOM1
blt updateSegmentLeftFast_changeDir
@ -374,7 +376,7 @@ updateSegmentLeftFast_doUp anop
tax
lda tileAbove,x
sta segmentTileOffsetsUL,y
bra updateSegmentLeftFast_done
rts
updateSegmentLeftFast_dirDown anop
lda segmentTileOffsetsUR,y
@ -403,8 +405,6 @@ updateSegmentLeftFast_doDown anop
tax
lda tileBelow,x
sta segmentTileOffsetsLL,y
updateSegmentLeftFast_done anop
rts
@ -421,7 +421,7 @@ updateSegmentLeftSlow_skipDec anop
lda segmentTileOffsetsUL,y
sta segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
jmp updateSegmentLeftSlow_done
rts
updateSegmentLeftSlow_nextOffset anop
cmp #1
@ -432,28 +432,30 @@ updateSegmentLeftSlow_nextOffset anop
lda tileLeft,x
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
jmp updateSegmentLeftSlow_done
rts
updateSegmentLeftSlow_nextOffset2 anop
cmp #5
beq updateSegmentLeftSlow_checkDir
jmp updateSegmentLeftSlow_done
rts
updateSegmentLeftSlow_checkDir anop
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_POISONED_HEAD
beq updateSegmentLeftSlow_changeDir
lda segmentTileOffsetsUL,y
tax
ldx segmentTileOffsetsUL,y
cpx #LHS_FIRST_TILE_OFFSET
bge updateSegmentLeftSlow_changeDir
lda tileType,x
bne updateSegmentLeftSlow_checkPoison
lda tileLeft,x
cmp #LHS_FIRST_TILE_OFFSET
bge updateSegmentLeftSlow_changeDir
tax
lda tileType,x
bne updateSegmentLeftSlow_checkPoison
jmp updateSegmentLeftSlow_done
rts
updateSegmentLeftSlow_checkPoison anop
cmp #TILE_POISON_MUSHROOM1
blt updateSegmentLeftSlow_changeDir
@ -491,7 +493,7 @@ updateSegmentLeftSlow_doUp anop
tax
lda tileAbove,x
sta segmentTileOffsetsUL,y
bra updateSegmentLeftSlow_done
rts
updateSegmentLeftSlow_dirDown anop
lda segmentTileOffsetsUR,y
@ -520,8 +522,6 @@ updateSegmentLeftSlow_doDown anop
tax
lda tileBelow,x
sta segmentTileOffsetsLL,y
updateSegmentLeftSlow_done anop
rts
@ -570,20 +570,18 @@ updateSegmentDownLeftFast_cont anop
sta segmentTileOffsetsLL,y
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
bra updateSegmentDownLeftFast_done
rts
updateSegmentDownLeftFast_tilesDown anop
lda segmentTileOffsetsLL,y
sta segmentTileOffsetsUL,y
lda segmentTileOffsetsLR,y
sta segmentTileOffsetsUR,y
bra updateSegmentDownLeftFast_done
rts
updateSegmentDownLeftFast_nextOffset anop
lda #SEGMENT_FACING_DOWN
sta segmentFacing,y
updateSegmentDownLeftFast_done anop
rts
@ -624,14 +622,14 @@ updateSegmentDownLeftSlow_cont anop
sta segmentTileOffsetsLL,y
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
bra updateSegmentDownLeftSlow_done
rts
updateSegmentDownLeftSlow_tilesDown anop
lda segmentTileOffsetsLL,y
sta segmentTileOffsetsUL,y
lda segmentTileOffsetsLR,y
sta segmentTileOffsetsUR,y
bra updateSegmentDownLeftSlow_done
rts
updateSegmentDownLeftSlow_nextOffset anop
cmp #7
@ -709,7 +707,7 @@ updateSegmentDownSlow_cont anop
sta segmentFacing,y
tyx
inc segmentScreenOffsets,x
bra updateSegmentDownSlow_done
rts
updateSegmentDownSlow_left anop
lda #SEGMENT_FACING_DOWN_LEFT
@ -766,20 +764,18 @@ updateSegmentDownRightFast_cont anop
sta segmentTileOffsetsLL,y
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
bra updateSegmentDownRightFast_done
rts
updateSegmentDownRightFast_tilesDown anop
lda segmentTileOffsetsLL,y
sta segmentTileOffsetsUL,y
lda segmentTileOffsetsLR,y
sta segmentTileOffsetsUR,y
bra updateSegmentDownRightFast_done
rts
updateSegmentDownRightFast_nextOffset anop
lda #SEGMENT_FACING_DOWN
sta segmentFacing,y
updateSegmentDownRightFast_done anop
rts
@ -820,14 +816,14 @@ updateSegmentDownRightSlow_cont anop
sta segmentTileOffsetsLL,y
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
bra updateSegmentDownRightSlow_done
rts
updateSegmentDownRightSlow_tilesDown anop
lda segmentTileOffsetsLL,y
sta segmentTileOffsetsUL,y
lda segmentTileOffsetsLR,y
sta segmentTileOffsetsUR,y
bra updateSegmentDownRightSlow_done
rts
updateSegmentDownRightSlow_nextOffset anop
cmp #7
@ -849,7 +845,7 @@ updateSegmentRightFast entry
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
jmp updateSegmentRightFast_done
rts
updateSegmentRightFast_nextOffset anop
cmp #1
@ -864,22 +860,25 @@ updateSegmentRightFast_nextOffset anop
updateSegmentRightFast_nextOffset2 anop
cmp #3
beq updateSegmentRightFast_checkDir
jmp updateSegmentRightFast_done
rts
updateSegmentRightFast_checkDir anop
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_POISONED_HEAD
beq updateSegmentRightFast_changeDir
lda segmentTileOffsetsUR,y
tax
ldx segmentTileOffsetsUR,y
cpx #RHS_FIRST_TILE_OFFSET
bge updateSegmentRightFast_changeDir
lda tileType,x
bne updateSegmentRightFast_checkPoison
lda tileRight,x
cmp #RHS_FIRST_TILE_OFFSET
bge updateSegmentRightFast_changeDir
tax
lda tileType,x
bne updateSegmentRightFast_checkPoison
jmp updateSegmentRightFast_done
rts
updateSegmentRightFast_checkPoison anop
cmp #TILE_POISON_MUSHROOM1
blt updateSegmentRightFast_changeDir
@ -917,7 +916,7 @@ updateSegmentRightFast_doUp anop
tax
lda tileAbove,x
sta segmentTileOffsetsUL,y
bra updateSegmentRightFast_done
rts
updateSegmentRightFast_dirDown anop
lda segmentTileOffsetsUR,y
@ -946,8 +945,6 @@ updateSegmentRightFast_doDown anop
tax
lda tileBelow,x
sta segmentTileOffsetsLL,y
updateSegmentRightFast_done anop
rts
@ -964,7 +961,7 @@ updateSegmentRightSlow_skipInc anop
lda segmentTileOffsetsUR,y
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
jmp updateSegmentRightSlow_done
rts
updateSegmentRightSlow_nextOffset anop
cmp #1
@ -975,28 +972,30 @@ updateSegmentRightSlow_nextOffset anop
lda tileRight,x
sta segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
jmp updateSegmentRightSlow_done
rts
updateSegmentRightSlow_nextOffset2 anop
cmp #5
beq updateSegmentRightSlow_checkDir
jmp updateSegmentRightSlow_done
rts
updateSegmentRightSlow_checkDir anop
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_POISONED_HEAD
beq updateSegmentRightSlow_changeDir
lda segmentTileOffsetsUR,y
tax
ldx segmentTileOffsetsUR,y
cpx #RHS_FIRST_TILE_OFFSET
bge updateSegmentRightSlow_changeDir
lda tileType,x
bne updateSegmentRightSlow_checkPoison
lda tileRight,x
cmp #RHS_FIRST_TILE_OFFSET
bge updateSegmentRightSlow_changeDir
tax
lda tileType,x
bne updateSegmentRightSlow_checkPoison
jmp updateSegmentRightSlow_done
rts
updateSegmentRightSlow_checkPoison anop
cmp #TILE_POISON_MUSHROOM1
blt updateSegmentRightSlow_changeDir
@ -1034,7 +1033,7 @@ updateSegmentRightSlow_doUp anop
tax
lda tileAbove,x
sta segmentTileOffsetsUL,y
bra updateSegmentRightSlow_done
rts
updateSegmentRightSlow_dirDown anop
lda segmentTileOffsetsUR,y
@ -1063,8 +1062,6 @@ updateSegmentRightSlow_doDown anop
tax
lda tileBelow,x
sta segmentTileOffsetsLL,y
updateSegmentRightSlow_done anop
rts