mirror of https://github.com/jeremysrand/BuGS.git
Add collision detection for all of the bug types. Remove the debug code for shooting bugs. It is almost a functional game now!
This commit is contained in:
Jeremy Rand
parent
64f96896f7
commit
520aaa5a34
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@ -80,7 +80,7 @@
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9D47CBE02547BEDB00CDA5CB /* gameMushroom.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameMushroom.s; sourceTree = "<group>"; };
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9D47CC14254A698900CDA5CB /* gamePlayer.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gamePlayer.s; sourceTree = "<group>"; };
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9D47CCBA25525C1A00CDA5CB /* tileData.pl */ = {isa = PBXFileReference; lastKnownFileType = text.script.perl; path = tileData.pl; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.perl; };
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9D53E5B32562320300E10169 /* gameShot.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameShot.s; sourceTree = "<group>"; };
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9D53E5B32562320300E10169 /* gameShot.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameShot.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9D62AF3B249871A300348F45 /* colour.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = colour.s; sourceTree = "<group>"; };
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9D62AF3F2499CD1E00348F45 /* LICENSE */ = {isa = PBXFileReference; lastKnownFileType = text; path = LICENSE; sourceTree = "<group>"; };
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9D62AF402499CD3A00348F45 /* README.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
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@ -89,11 +89,11 @@
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9D8FFC602491CA28005C9327 /* game.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = game.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9D8FFC612491CAF0005C9327 /* game.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = game.h; sourceTree = "<group>"; };
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9D9F07F92553AB3800875B29 /* TODO.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = TODO.md; sourceTree = "<group>"; };
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9DB1505024C3801100558B87 /* gameFlea.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameFlea.s; sourceTree = "<group>"; };
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9DB1505124C6875C00558B87 /* gameScorpion.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameScorpion.s; sourceTree = "<group>"; };
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9DB1505024C3801100558B87 /* gameFlea.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameFlea.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9DB1505124C6875C00558B87 /* gameScorpion.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameScorpion.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9DB1505224C7495400558B87 /* globals.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = globals.s; sourceTree = "<group>"; };
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9DB1505324C9E54C00558B87 /* gameSpider.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSpider.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9DB1505424D3BF6C00558B87 /* gameSegments.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSegments.s; sourceTree = "<group>"; };
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9DB1505424D3BF6C00558B87 /* gameSegments.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSegments.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
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9DB1505524D3BFCE00558B87 /* global.macros */ = {isa = PBXFileReference; lastKnownFileType = text; path = global.macros; sourceTree = "<group>"; };
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9DC4D7BD24B7652100BACF4B /* ship.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = ship.s; sourceTree = "<group>"; };
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9DC4D7BE24B80C9600BACF4B /* shot.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = shot.s; sourceTree = "<group>"; };
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32
BuGS/game.s
32
BuGS/game.s
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@ -264,44 +264,12 @@ checkKey_loop2 anop
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beq checkKey_quit
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cmp #$001b
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beq checkKey_quit
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cmp #'f'
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beq checkKey_shootFlea
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cmp #'F'
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beq checkKey_shootFlea
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cmp #'s'
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beq checkKey_shootScorpion
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cmp #'S'
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beq checkKey_shootScorpion
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cmp #'p'
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beq checkKey_shootSpider
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cmp #'P'
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beq checkKey_shootSpider
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cmp #'g'
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beq checkKey_game
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cmp #'c'
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beq checkKey_shootCentipede
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cmp #'C'
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beq checkKey_shootCentipede
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checkKey_done anop
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rtl
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checkKey_shootFlea anop
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jmp shootFlea
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checkKey_shootScorpion anop
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jmp shootScorpion
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checkKey_shootSpider anop
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jmp shootSpider
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checkKey_shootCentipede anop
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jmp shootRandomSegment
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checkKey_quit anop
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stz shouldQuit
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@ -253,6 +253,27 @@ setFleaSpeed_fast anop
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sta fleaUpdatePerTile
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rtl
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; See the isSpiderCollision for info about the requirements and limitations of this routine
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isFleaCollision entry
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ldx fleaState
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cpx #FLEA_STATE_FALLING
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bne isFleaCollision_returnFalse
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cmp fleaTileOffsets
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beq isFleaCollision_returnTrue
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cmp fleaTileOffsets+2
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beq isFleaCollision_returnTrue
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cmp fleaTileOffsets+4
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beq isFleaCollision_returnTrue
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cmp fleaTileOffsets+6
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bne isFleaCollision_returnFalse
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isFleaCollision_returnTrue anop
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sec
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rtl
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isFleaCollision_returnFalse anop
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clc
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rtl
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shootFlea entry
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lda fleaState
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@ -332,6 +332,29 @@ addScorpion_done anop
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rtl
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; See isSpiderCollision for the requirements of this routine and
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; for info about its limitation
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isScorpionCollision entry
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ldx scorpionState
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beq isScorpionCollision_returnFalse
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cpx #SCORPION_STATE_EXPLODING
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bne isScorpionCollision_test
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isScorpionCollision_returnFalse anop
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clc
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rtl
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isScorpionCollision_test anop
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cmp scorpionTileOffsets
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beq isScorpionCollision_returnTrue
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cmp scorpionTileOffsets+2
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beq isScorpionCollision_returnTrue
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cmp scorpionTileOffsets+4
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bne isScorpionCollision_returnFalse
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isScorpionCollision_returnTrue anop
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sec
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rtl
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shootScorpion entry
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lda scorpionState
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beq shootScorpion_done
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@ -1677,8 +1677,46 @@ addCentipede_body anop
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plx
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addCentipede_done anop
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rtl
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; The accummulator has the tile offset where the collision happened
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; The y register has the address where the collision happened
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;
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; The result is a clear carry if there is no collision found or
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; a set carry and the segment num * 2 in the X register
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isSegmentCollision entry
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ldy numSegments
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beq isSegmentCollision_returnFalse
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ldx #SEGMENT_MAX_OFFSET
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isSegmentCollision_loop anop
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ldy segmentStates,x
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beq isSegmentCollision_nextSegment
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cpy #SEGMENT_STATE_EXPLODING
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beq isSegmentCollision_nextSegment
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ldy segmentPosOffset,x
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cmp segmentTileOffsetsLL,y
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beq isSegmentCollision_returnTrue
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cmp segmentTileOffsetsLR,y
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beq isSegmentCollision_returnTrue
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cmp segmentTileOffsetsUL,y
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beq isSegmentCollision_returnTrue
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cmp segmentTileOffsetsUR,y
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beq isSegmentCollision_returnTrue
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isSegmentCollision_nextSegment anop
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dex
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dex
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bpl isSegmentCollision_loop
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isSegmentCollision_returnFalse anop
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clc
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rtl
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isSegmentCollision_returnTrue anop
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sec
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rtl
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; Call this with the segment num * 2 in the X register
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shootSegment entry
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dec numSegments
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@ -1732,21 +1770,6 @@ shootSegment_skipMushroom anop
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sta segmentStates+2,x
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shootSegment_done anop
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rtl
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shootRandomSegment entry
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lda numSegments
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bne shootRandomSegment_hasSegments
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rtl
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shootRandomSegment_hasSegments anop
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lda #12
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jsl randN
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asl a
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tax
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lda segmentStates,x
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cmp #SEGMENT_STATE_HEAD
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blt shootRandomSegment_hasSegments
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jmp shootSegment
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segmentsAddEnabled dc i2'1'
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@ -142,8 +142,42 @@ updateShot_checkCollision anop
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updateShot_collision anop
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and #$3333
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bne updateShot_maybeMushroom
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; TODO - Write the code to test for a collision with fleas, spiders, scorpions or centipede segments
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bra updateShot_done
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txy
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txa
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sec
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sbc #SCREEN_ADDRESS
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and #$fffc
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tax
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lda >screenToTileOffset,x
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cmp #SPIDER_STARTING_TOP_ROW_OFFSET
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blt updateShot_maybeScorpion
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jsl isSpiderCollision
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bcc updateShot_notSpiderOrScorpion
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lda #SHOT_STATE_NONE
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sta shotState
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jmp shootSpider
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updateShot_maybeScorpion anop
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jsl isScorpionCollision
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bcc updateShot_notSpiderOrScorpion
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lda #SHOT_STATE_NONE
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sta shotState
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jmp shootScorpion
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updateShot_notSpiderOrScorpion anop
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jsl isFleaCollision
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bcc updateShot_maybeSegment
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lda #SHOT_STATE_NONE
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sta shotState
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jmp shootFlea
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updateShot_maybeSegment anop
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jsl isSegmentCollision
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bcc updateShot_done
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lda #SHOT_STATE_NONE
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sta shotState
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jmp shootSegment
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updateShot_maybeMushroom anop
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txa
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@ -758,7 +758,44 @@ setSpiderSpeed_fast anop
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long i,m
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rtl
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; The accumulator has the tile where the collision occurred.
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; The y register has the address where the collision occurred.
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; This routine is expected to preserve the y register and the
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; accummulator. It can change the x register.
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;
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; For now, the implementation is very rough and just looks to see if
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; collision is in a tile overlapping with the spider. It would be
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; better to look closely at the address and try to figure out if it
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; really collided.
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;
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; The result here is returned in the C bit of the processor status
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; register
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isSpiderCollision entry
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ldx spiderState
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cpx #SPIDER_STATE_LEFT_DIAG_DOWN
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bge isSpiderCollision_test
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isSpiderCollision_returnFalse anop
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clc
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rtl
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isSpiderCollision_test anop
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cmp spiderTileOffsets
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beq isSpiderCollision_returnTrue
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cmp spiderTileOffsets+2
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beq isSpiderCollision_returnTrue
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cmp spiderTileOffsets+4
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beq isSpiderCollision_returnTrue
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cmp spiderTileOffsets+6
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beq isSpiderCollision_returnTrue
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cmp spiderTileOffsets+8
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beq isSpiderCollision_returnTrue
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cmp spiderTileOffsets+10
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bne isSpiderCollision_returnFalse
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isSpiderCollision_returnTrue anop
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sec
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rtl
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shootSpider entry
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lda spiderState
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@ -27,7 +27,7 @@ sed -i "" "s:^s7d1 *=.*$:s7d1 = $DISKIMAGE:" config.txt
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# This magic ensure that clicking stop in Xcode results in the emulator terminating.
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$EMULATORPATH &
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$EMULATORPATH -fullscreen &
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PID=$!
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trap 'kill $PID' SIGTERM SIGINT SIGHUP EXIT
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