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Add the code to add head segments once the centipede reaches the bottom of the screen.

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This commit is contained in:
Jeremy Rand 2020-10-08 23:59:34 -04:00
parent 6969da19b9
commit a7d1db68e2
3 changed files with 134 additions and 18 deletions
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10
BuGS.xcodeproj/xcshareddata/xcschemes/BuGS.xcscheme
View File

@ -14,7 +14,7 @@
buildForAnalyzing = "YES">
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "9D0B917C1F526C2D004D7E0B"
BlueprintIdentifier = "9D1716822491C49300C83148"
BuildableName = "BuGS"
BlueprintName = "BuGS"
ReferencedContainer = "container:BuGS.xcodeproj">
@ -29,8 +29,6 @@
shouldUseLaunchSchemeArgsEnv = "YES">
<Testables>
</Testables>
<AdditionalOptions>
</AdditionalOptions>
</TestAction>
<LaunchAction
buildConfiguration = "Debug"
@ -49,7 +47,7 @@
<MacroExpansion>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "9D0B917C1F526C2D004D7E0B"
BlueprintIdentifier = "9D1716822491C49300C83148"
BuildableName = "BuGS"
BlueprintName = "BuGS"
ReferencedContainer = "container:BuGS.xcodeproj">
@ -81,8 +79,6 @@
isEnabled = "YES">
</CommandLineArgument>
</CommandLineArguments>
<AdditionalOptions>
</AdditionalOptions>
</LaunchAction>
<ProfileAction
buildConfiguration = "Release"
@ -93,7 +89,7 @@
<MacroExpansion>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "9D0B917C1F526C2D004D7E0B"
BlueprintIdentifier = "9D1716822491C49300C83148"
BuildableName = "BuGS"
BlueprintName = "BuGS"
ReferencedContainer = "container:BuGS.xcodeproj">

140
BuGS/gameSegments.s
View File

@ -249,11 +249,23 @@ updateSegments_spriteOffsetCont anop
sta segmentSpriteOffset
updateSegments_skipSpriteOffset anop
lda #SEGMENT_MAX_OFFSET+2
sta segmentEmptyOffset
ldx #SEGMENT_MAX_OFFSET
updateSegments_nextSegment anop
lda segmentStates,x
bne updateSegments_cont
stx segmentEmptyOffset
lda segmentPosOffset,x
beq updateSegments_emptyWrapPos
dec a
dec a
sta segmentPosOffset,x
jmp updateSegments_skipSegment
updateSegments_emptyWrapPos anop
lda #SEGMENT_MAX_POSITION_OFFSET
sta segmentPosOffset,x
jmp updateSegments_skipSegment
updateSegments_cont anop
cmp #SEGMENT_STATE_BODY
bne updateSegments_headOrExploding
@ -383,11 +395,89 @@ updateSegments_headCont anop
updateSegments_skipSegment anop
dex
dex
bmi updateSegments_done
bmi updateSegments_maybeAdd
jmp updateSegments_nextSegment
updateSegments_maybeAdd anop
lda segmentsAddEnabled
bne updateSegments_done
lda segmentEmptyOffset
cmp #SEGMENT_MAX_OFFSET+2
bge updateSegments_done
lda numSegments
beq updateSegments_done
cmp #SEGMENT_MAX_NUM
bge updateSegments_done
lda segmentPixelOffset
and #3
cmp #1
bne updateSegments_done
jsl rand0_to_65534
and #31
bne updateSegments_done
jmp updateSegmentAddSegment
updateSegments_done anop
rtl
updateSegmentAddSegment entry
inc numSegments
ldx segmentEmptyOffset
lda #SEGMENT_STATE_HEAD
sta segmentStates,x
lda #SEGMENT_SPEED_FAST
sta segmentSpeed,x
ldy segmentPosOffset,x
lda #SEGMENT_DIR_DOWN
sta segmentVerticalDir,y
jsl rand0_to_65534
and #$0080
beq updateSegmentAddSegment_leftSide
lda #SEGMENT_DIR_LEFT
sta segmentHorizontalDir,y
lda #SEGMENT_FACING_LEFT
sta segmentFacing,y
ldx #((GAME_NUM_TILES_WIDE*(GAME_NUM_TILES_TALL-6))-1)*SIZEOF_TILE_INFO
lda tileScreenOffset,x
sta segmentScreenOffsets,y
txa
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
sta segmentCurrentTile,y
lda tileRight,x
sta segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
rtl
updateSegmentAddSegment_leftSide anop
lda #SEGMENT_DIR_RIGHT
sta segmentHorizontalDir,y
lda #SEGMENT_FACING_RIGHT
sta segmentFacing,y
ldx #(GAME_NUM_TILES_WIDE*(GAME_NUM_TILES_TALL-7))*SIZEOF_TILE_INFO
lda tileScreenOffset,x
sec
sbc #6
sta segmentScreenOffsets,y
txa
sta segmentTileOffsetsUR,y
sta segmentTileOffsetsLR,y
sta segmentCurrentTile,y
lda tileLeft,x
sta segmentTileOffsetsUL,y
sta segmentTileOffsetsLL,y
rtl
updateSegmentExplodingNoWrap entry
lda segmentFacing+2,y
@ -506,12 +596,18 @@ updateSegmentLeftFast_dirDown anop
cmp #(NUM_GAME_TILES-GAME_NUM_TILES_WIDE)*SIZEOF_TILE_INFO
blt updateSegmentLeftFast_doDown
; If the head segment was poisoned, it is no longer poisoned once the head is going up again.
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_HEAD
beq updateSegmentLeftFast_notPoisoned
lda #SEGMENT_STATE_HEAD
sta segmentStates,x
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
bra updateSegmentLeftFast_doUp
updateSegmentLeftFast_notPoisoned anop
stz segmentsAddEnabled
bra updateSegmentLeftFast_doUp
updateSegmentLeftFast_doDown anop
lda segmentScreenOffsets,y
@ -641,12 +737,18 @@ updateSegmentLeftSlow_dirDown anop
cmp #(NUM_GAME_TILES-GAME_NUM_TILES_WIDE)*SIZEOF_TILE_INFO
blt updateSegmentLeftSlow_doDown
; If the head segment was poisoned, it is no longer poisoned once the head is going up again.
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_HEAD
beq updateSegmentLeftSlow_notPoisoned
lda #SEGMENT_STATE_HEAD
sta segmentStates,x
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
bra updateSegmentLeftSlow_doUp
updateSegmentLeftSlow_notPoisoned anop
stz segmentsAddEnabled
bra updateSegmentLeftSlow_doUp
updateSegmentLeftSlow_doDown anop
lda segmentScreenOffsets,y
@ -1074,12 +1176,18 @@ updateSegmentRightFast_dirDown anop
cmp #(NUM_GAME_TILES-GAME_NUM_TILES_WIDE)*SIZEOF_TILE_INFO
blt updateSegmentRightFast_doDown
; If the head segment was poisoned, it is no longer poisoned once the head is going up again.
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_HEAD
beq updateSegmentRightFast_notPoisoned
lda #SEGMENT_STATE_HEAD
sta segmentStates,x
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
bra updateSegmentRightFast_doUp
updateSegmentRightFast_notPoisoned anop
stz segmentsAddEnabled
bra updateSegmentRightFast_doUp
updateSegmentRightFast_doDown anop
lda segmentScreenOffsets,y
@ -1209,11 +1317,17 @@ updateSegmentRightSlow_dirDown anop
cmp #(NUM_GAME_TILES-GAME_NUM_TILES_WIDE)*SIZEOF_TILE_INFO
blt updateSegmentRightSlow_doDown
; If the head segment was poisoned, it is no longer poisoned once the head is going up again.
ldx segmentBeingUpdated
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
ldx segmentBeingUpdated
lda segmentStates,x
cmp #SEGMENT_STATE_HEAD
beq updateSegmentRightSlow_notPoisoned
lda #SEGMENT_STATE_HEAD
sta segmentStates,x
lda #SEGMENT_DIR_UP
sta segmentVerticalDir,y
bra updateSegmentRightSlow_doUp
updateSegmentRightSlow_notPoisoned anop
stz segmentsAddEnabled
bra updateSegmentRightSlow_doUp
updateSegmentRightSlow_doDown anop
@ -1469,6 +1583,8 @@ addSlowHeadSegment entry
inc numSegments
lda #5
sta segmentPixelOffset
lda #1
sta segmentsAddEnabled
rtl
@ -1517,6 +1633,8 @@ addFastHeadSegment entry
inc numSegments
lda #5
sta segmentPixelOffset
lda #1
sta segmentsAddEnabled
rtl
@ -1579,6 +1697,7 @@ shootRandomSegment_hasSegments anop
numSegments dc i2'0'
segmentsAddEnabled dc i2'1'
; The method used to track a segments position and other details on the screen are a bit
; funky. In order to have body segments follow a head segment, we keep information from
@ -1610,6 +1729,7 @@ SEGMENT_SPRITE_LAST_OFFSET gequ 7*4
segmentSpriteOffset dc i2'0'
segmentPixelOffset dc i2'0'
segmentBeingUpdated dc i2'0'
segmentEmptyOffset dc i2'0'
headJumpTable anop

2
BuGS/make/config.txt
View File

@ -8,7 +8,7 @@ s6d2 =
s7d1 = /Users/jrand/Library/Developer/Xcode/DerivedData/BuGS-bffpexoblaghkzcbtjtzxeulnuto/Build/Products/Debug/BuGS.2mg
g_limit_speed = 0
g_limit_speed = 3
bram1[00] = 00 00 00 01 00 00 0d 06 02 01 01 00 01 00 00 00