Jeremy Rand
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0d4677c397
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More work towards the animation of centipede segments.
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2020-09-08 23:54:44 -04:00 |
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Jeremy Rand
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36617cbf9d
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Lay some more groundwork for animating centipede segments. We now have an array of 96 (97 actually) entries which describe the position of the segment now or in the past. By keeping past information, body segments which follow head segments will take no calculation to update. We just have to animate head segments and body segments will follow them 8 pixels behind automatically.
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2020-09-07 22:35:32 -04:00 |
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Jeremy Rand
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3b541f8482
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Fix bug leading to crash when trying to add centipede body segments. I needed to have a nop instruction after the self-modifying long jump. I am writing 4 bytes of the address into the long jump which only uses a 3 byte address and I was corrupting the next instruction. Inserting a nop ensures no corruption happens.
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2020-09-06 13:39:00 -04:00 |
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Jeremy Rand
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f5d1aa9ee6
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Improve the performance of the centipede segment draw function.
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2020-09-06 02:05:33 -04:00 |
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Jeremy Rand
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92c02ded0f
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Simplify the handling of the dirty tiles to just store the dirty word and not keep the array of dirty tile offsets. Have the flea use game and non-game dirty tiles to fix the problem with LHS tiles being marked dirty all the time.
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2020-09-04 01:55:38 -04:00 |
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Jeremy Rand
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22a22d3533
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Change the code to race the beam down the screen, redrawing the dirty game rows as it goes.
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2020-09-04 00:17:19 -04:00 |
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Jeremy Rand
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b07221c363
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Change from an array of structs to a series of individual arrays for the tile information. This makes it easier to index into the arrays because the tile number * 2 is the offset, rather than tile number * 16.
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2020-09-02 00:15:53 -04:00 |
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Jeremy Rand
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df56cdecf1
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Add the ability to display head segments of the centipede. Body segments is not working yet.
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2020-08-27 23:36:16 -04:00 |
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Jeremy Rand
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3a63b2ef1b
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Add code to support marking dirty tiles under head and body segments.
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2020-08-27 22:36:04 -04:00 |
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Jeremy Rand
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d8e9c6863b
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Add the code to draw the body and head segments in the game loop. Still need to add code to create, update and shoot segments.
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2020-08-26 23:44:41 -04:00 |
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Jeremy Rand
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67e2b56dc2
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Add some more code to support adding bug segments to the game.
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2020-08-10 23:58:49 -04:00 |
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Jeremy Rand
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7d7afc908d
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Use macros to reduce the copy/pasted code for marking tiles as dirty. Rough out the support for body and head segments.
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2020-07-30 23:34:48 -04:00 |
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