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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Jeremy Rand
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2b45813cbb
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Increase the chance that a flea produces a mushroom.
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2020-07-28 15:44:55 -04:00 |
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Jeremy Rand
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8bcd4fccf6
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Add the code to support switching between fast and slow spiders.
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2020-07-27 23:30:11 -04:00 |
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Jeremy Rand
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883d882d0e
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Provide an API to set the default speed of a flea or a scorpion. This will allow the speed to be changed for different levels in the game. Need to add this API for spiders also.
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2020-07-27 22:27:18 -04:00 |
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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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9fde825430
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Add some constants for the spider score amounts.
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2020-07-27 14:25:22 -04:00 |
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Jeremy Rand
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3ad311dca6
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Add support for shooting the spider and displaying a score.
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2020-07-27 14:22:34 -04:00 |
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Jeremy Rand
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49baa1b360
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Get spider motion working in both directions.
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2020-07-26 16:00:46 -04:00 |
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Jeremy Rand
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d4fbd9f14c
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Almost done animating the spider.
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2020-07-26 02:13:06 -04:00 |
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Jeremy Rand
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bf01c47285
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Getting close to having the spider fully implemented...
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2020-07-26 00:05:32 -04:00 |
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Jeremy Rand
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18d0c3a80f
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Add some randomness when the spider changes direction.
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2020-07-25 14:54:35 -04:00 |
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Jeremy Rand
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213686ea1d
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The spider can now go down and to the right. More directions to come.
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2020-07-25 14:34:44 -04:00 |
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Jeremy Rand
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184461947b
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Getting closer on the spider
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2020-07-25 00:01:42 -04:00 |
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Jeremy Rand
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f890200a0d
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More spider work.
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2020-07-24 23:50:01 -04:00 |
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Jeremy Rand
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45bc6641e6
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Some more work on spider animation.
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2020-07-24 23:27:33 -04:00 |
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Jeremy Rand
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aa2e5408da
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Some code for adding a spider on the LHS.
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2020-07-24 14:42:03 -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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68ecca75df
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Add support for fast moving scorpions which appear at later levels.
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2020-07-22 02:31:50 -04:00 |
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Jeremy Rand
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78f439d248
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Add a constant for creating a poisoned mushroom.
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2020-07-22 01:47:59 -04:00 |
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Jeremy Rand
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b3da2023e4
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Get the scorpion moving to the right and to the left and poisoning the mushrooms. Still need to handle exploding the scorpion and double speed scorpions.
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2020-07-22 00:06:01 -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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8d2fbda733
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Not sure why this change didn't go with the previous commit.
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2020-07-19 15:16:20 -04:00 |
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Jeremy Rand
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88ea840e23
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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.
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2020-07-19 15:15:45 -04:00 |
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Jeremy Rand
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3fcd2ac8a8
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Double the speed of the flea.
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2020-07-19 02:19:56 -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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69e3c4a62a
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Add some more code for background tiles.
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2020-07-15 23:10:25 -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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63fb8a0e22
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Fix a bug in the _collision macro where the mask was not being used. Remove an unnecessary and instruction when drawing heads and body segments.
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2020-07-14 01:49:07 -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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