Apple-2gs-SW
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BuGS
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Add some global data to have a bit mask of tiles which contain a centipede segment. This will allow the update code to figure out if centipede segments are colliding and if so, change direction. Still need to write some codegen for this global constant data rather than building it at runtime in C.

This commit is contained in:
Jeremy Rand 2020-09-20 22:22:58 -04:00
parent a9d3b12725
commit c4902f486b
4 changed files with 21 additions and 3 deletions
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2
BuGS.xcodeproj/project.pbxproj
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@ -86,7 +86,7 @@
9DB1505024C3801100558B87 /* gameFlea.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameFlea.s; sourceTree = "<group>"; };
9DB1505124C6875C00558B87 /* gameScorpion.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameScorpion.s; sourceTree = "<group>"; };
9DB1505224C7495400558B87 /* globals.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = globals.s; sourceTree = "<group>"; };
9DB1505324C9E54C00558B87 /* gameSpider.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSpider.s; sourceTree = "<group>"; };
9DB1505324C9E54C00558B87 /* gameSpider.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSpider.s; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.asm.orcam; };
9DB1505424D3BF6C00558B87 /* gameSegments.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameSegments.s; sourceTree = "<group>"; };
9DB1505524D3BFCE00558B87 /* global.macros */ = {isa = PBXFileReference; lastKnownFileType = text; path = global.macros; sourceTree = "<group>"; };
9DC4D7BD24B7652100BACF4B /* ship.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = ship.s; sourceTree = "<group>"; };

4
BuGS.xcodeproj/xcuserdata/jrand.xcuserdatad/xcschemes/xcschememanagement.plist
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@ -7,7 +7,7 @@
<key>Binary.xcscheme_^#shared#^_</key>
<dict>
<key>orderHint</key>
<integer>1</integer>
<integer>3</integer>
</dict>
<key>BuGS.xcscheme_^#shared#^_</key>
<dict>
@ -22,7 +22,7 @@
<key>doNotBuild.xcscheme_^#shared#^_</key>
<dict>
<key>orderHint</key>
<integer>3</integer>
<integer>1</integer>
</dict>
</dict>
</dict>

16
BuGS/tiles.c
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@ -55,6 +55,8 @@ tTileOffset tileAbove[TOTAL_NUM_TILES];
tTileOffset tileBelow[TOTAL_NUM_TILES];
tTileOffset tileLeft[TOTAL_NUM_TILES];
tTileOffset tileRight[TOTAL_NUM_TILES];
word tileBitOffset[NUM_GAME_TILES];
word tileBitMask[NUM_GAME_TILES];
tTileOffset dirtyNonGameTiles[NUM_NON_GAME_TILES];
word numDirtyNonGameTiles;
@ -70,6 +72,8 @@ void initTiles(void)
word tileY;
word lastOffset;
word tileIndex = 0;
word bitOffset = 0;
word bitMask = 1;
word rhsTileIndex = RHS_FIRST_TILE;
word lhsTileIndex = LHS_FIRST_TILE;
@ -113,6 +117,8 @@ void initTiles(void)
tileDirty[tileIndex] = 0;
tileScreenOffset[tileIndex] = lastOffset;
tileType[tileIndex] = TILE_EMPTY;
tileBitOffset[tileIndex] = bitOffset;
tileBitMask[tileIndex] = bitMask;
if (tileY == 0)
tileAbove[tileIndex] = INVALID_TILE_NUM;
@ -136,6 +142,16 @@ void initTiles(void)
tileIndex++;
if ((tileIndex % (sizeof(word) * 2)) == 0)
{
bitOffset += sizeof(word);
bitMask = 1;
}
else
{
bitMask <<= 1;
}
lastOffset += 4;
}

2
BuGS/tiles.h
View File

@ -112,6 +112,8 @@ extern tTileOffset tileAbove[TOTAL_NUM_TILES];
extern tTileOffset tileBelow[TOTAL_NUM_TILES];
extern tTileOffset tileLeft[TOTAL_NUM_TILES];
extern tTileOffset tileRight[TOTAL_NUM_TILES];
extern word tileBitOffset[NUM_GAME_TILES];
extern word tileBitMask[NUM_GAME_TILES];
extern tTileOffset dirtyNonGameTiles[NUM_NON_GAME_TILES];
extern word numDirtyNonGameTiles;