Commit Graph

66 Commits

Author SHA1 Message Date
Jeremy Rand
c614164c14 Add code to get scorpions animating to the left. Lots of cleanup, adding a global data section that also has important global constants. 2020-07-21 21:47:50 -04:00
Jeremy Rand
1ccdb1d0b6 Start to get scorpion support into the game. 2020-07-20 23:04:27 -04:00
Jeremy Rand
b813253c83 Add support for shooting fleas. When a flea is shot once, it accelerates its drop to the bottom. On the second shot, it explodes. 2020-07-20 00:05:18 -04:00
Jeremy Rand
88ea840e23 Update the flea sprite as it drops. Add random routines. Thanks to John Brooks for those. Use the random routines to pick a column for the flea to drop from. Also, randomly leave behind a mushroom as it falls. 2020-07-19 15:15:45 -04:00
Jeremy Rand
36104869b8 Add the code to animate a flea down the screen on demand. 2020-07-18 23:41:21 -04:00
Jeremy Rand
0336c692c4 Add some code to support animating fleas in the game. 2020-07-18 22:11:20 -04:00
Jeremy Rand
3f9e7bd066 Start implementing the code to draw the tiles on the screen. 2020-07-15 00:32:14 -04:00
Jeremy Rand
a718c8caef 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? 2020-07-09 22:55:08 -04:00
Jeremy Rand
7f33c3d400 Create all of the left facing head segment sprites. 2020-07-04 02:45:53 -04:00
Jeremy Rand
72265face9 Start adding centipede head segment sprites. 2020-07-03 02:04:27 -04:00
Jeremy Rand
598934446b 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. 2020-07-02 22:57:52 -04:00
Jeremy Rand
4766662de1 Add a readme and license file. 2020-06-17 00:02:46 -04:00
Jeremy Rand
fd72e9f18b Start coding up the sprite code. 2020-06-16 23:59:12 -04:00
Jeremy Rand
ceb2d00ff0 Add some code to set the scan line control bytes and the colour palette for all of the different levels of the game. 2020-06-16 00:02:20 -04:00
Jeremy Rand
a9810ecb75 Well, it launches, clears the screen, waits for a key and then quits. But it is a start. 2020-06-10 23:51:53 -04:00
Jeremy Rand
dbe7e7ad3f Initial Commit 2020-06-10 21:47:00 -04:00