Jeremy Rand
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36be001229
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Improve the randN function. Show a different colour on the border when drawing versus updating the game state.
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2020-07-27 21:47:28 -04:00 |
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Jeremy Rand
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4f74d630b9
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Start coding support for the spider. Also, try to show the performance of the main game loop in the border colour.
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2020-07-23 23:41:12 -04:00 |
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Jeremy Rand
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ada774960b
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Finish up work on the scorpion, adding support for shooting the scorpion. Some more cleanup of hard coded constants, moving them to globals.
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2020-07-22 23:46:04 -04:00 |
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Jeremy Rand
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44cb944f22
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More general cleanup and get rid of more magic numbers.
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2020-07-21 22:30:05 -04:00 |
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Jeremy Rand
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c614164c14
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Add code to get scorpions animating to the left. Lots of cleanup, adding a global data section that also has important global constants.
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2020-07-21 21:47:50 -04:00 |
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Jeremy Rand
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1ccdb1d0b6
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Start to get scorpion support into the game.
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2020-07-20 23:04:27 -04:00 |
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Jeremy Rand
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b813253c83
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Add support for shooting fleas. When a flea is shot once, it accelerates its drop to the bottom. On the second shot, it explodes.
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2020-07-20 00:05:18 -04:00 |
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Jeremy Rand
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063b4ce60c
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Fix the VBL code.
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2020-07-18 23:46:09 -04:00 |
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Jeremy Rand
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36104869b8
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Add the code to animate a flea down the screen on demand.
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2020-07-18 23:41:21 -04:00 |
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Jeremy Rand
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0336c692c4
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Add some code to support animating fleas in the game.
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2020-07-18 22:11:20 -04:00 |
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Jeremy Rand
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3c0ac30fcb
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A bunch of optimizations to reduce the number of instructions to draw tiles.
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2020-07-17 02:46:36 -04:00 |
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Jeremy Rand
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c79303d1dc
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Put a tile offset instead of a tile number in the dirty lists to eliminate the ASL operations that were necessary when iterating over the dirty tiles.
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2020-07-16 23:37:28 -04:00 |
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Jeremy Rand
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5c188bf91e
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More work on tiles. A tile now knows the tile number of its neighbours. This will make it easier for a sprite to mark the dirty tiles when drawing.
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2020-07-16 23:17:32 -04:00 |
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Jeremy Rand
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bff623af89
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Add a wait for VBL function.
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2020-07-15 23:20:35 -04:00 |
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Jeremy Rand
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3f9e7bd066
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Start implementing the code to draw the tiles on the screen.
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2020-07-15 00:32:14 -04:00 |
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Jeremy Rand
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a718c8caef
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Lots of general sprite cleanup. Add sprites for the ship and the shots and include collision detection in those routines. I think all of the drawing code is done now, maybe?
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2020-07-09 22:55:08 -04:00 |
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Jeremy Rand
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bc91429e3a
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Finish the centipede segment sprites.
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2020-07-09 00:27:32 -04:00 |
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Jeremy Rand
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9e06ec991b
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Add a bunch more centipede segment sprites.
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2020-07-06 00:01:44 -04:00 |
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Jeremy Rand
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5de91ba0ec
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Add the left body segment sprites.
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2020-07-04 02:59:42 -04:00 |
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Jeremy Rand
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7f33c3d400
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Create all of the left facing head segment sprites.
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2020-07-04 02:45:53 -04:00 |
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Jeremy Rand
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72265face9
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Start adding centipede head segment sprites.
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2020-07-03 02:04:27 -04:00 |
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Jeremy Rand
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598934446b
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Finish the spider sprites and the explosion sprites. Remove "and" masking from the spider and scorpion sprites because they will be drawn first and will not overlap with anything on the foreground. Split the sprite.s file into a series of smaller files for each type of sprite. Add a file to describe the overall plan for the design of the sprites.
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2020-07-02 22:57:52 -04:00 |
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Jeremy Rand
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e7ca4d4624
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More spider sprites.
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2020-07-01 13:53:42 -04:00 |
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Jeremy Rand
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5371b4e19e
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Add the first spider sprite.
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2020-06-30 23:38:27 -04:00 |
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Jeremy Rand
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0393cf6bf6
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Finish the sprites for the scorpion.
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2020-06-30 23:17:55 -04:00 |
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Jeremy Rand
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cc03c8a0a0
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Lots of optimization of the sprite code. More scorpions going in the right direction.
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2020-06-29 23:45:40 -04:00 |
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Jeremy Rand
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1b1506aac8
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Finish the left facing scorpion sprites. Still need to do the mirror image for right facing.
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2020-06-23 23:38:47 -04:00 |
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Jeremy Rand
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e34ea58cc1
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Add some more sprites for the scorpion.
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2020-06-23 01:52:06 -04:00 |
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Jeremy Rand
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964da82807
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Add some sprites for the scorpion.
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2020-06-22 23:45:25 -04:00 |
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Jeremy Rand
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936b7315ce
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Finish the sprites for the flea and the 300, 600 and 900 score notices.
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2020-06-18 23:35:20 -04:00 |
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Jeremy Rand
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eb480d76d8
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Finish sprites for numbers and start work on the flea.
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2020-06-18 00:03:41 -04:00 |
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Jeremy Rand
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d336ae86ff
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Finish the sprites for the letters.
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2020-06-17 02:16:04 -04:00 |
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Jeremy Rand
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fd72e9f18b
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Start coding up the sprite code.
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2020-06-16 23:59:12 -04:00 |
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Jeremy Rand
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ceb2d00ff0
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Add some code to set the scan line control bytes and the colour palette for all of the different levels of the game.
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2020-06-16 00:02:20 -04:00 |
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Jeremy Rand
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a9810ecb75
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Well, it launches, clears the screen, waits for a key and then quits. But it is a start.
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2020-06-10 23:51:53 -04:00 |
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