Jeremy Rand
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0e1e35c7cb
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Lots of updates to the readme. Add some bars along the left and the right to delineate the play area.
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2021-02-12 17:31:30 -05:00 |
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Jeremy Rand
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1b7d2e240b
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Fix a bug where it was possible for the player to collide with an exploding bug and then die. Change explosions so they are drawn using background colours which do not result in player collisions.
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2021-01-18 00:18:31 -05:00 |
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Jeremy Rand
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4700bd9cff
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Fix a bug where the collision and collisionAddr writes went to the wrong bank, leading to memory corruption and crashes.
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2021-01-06 22:21:31 -05:00 |
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Jeremy Rand
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50c924e1ff
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Look at two pixels wide when detecting collisions with a shot. I believe this solves the problem of shots passing through a centipede.
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2021-01-03 23:57:21 -05:00 |
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Jeremy Rand
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cdded307f9
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When looking for collisions, treat the lowest collision as the one that counts. Before this, if you had two stacked mushrooms, it was possible to shoot through the mushroom below and "hit" the mushroom above. This happened because the first collision found was the one that the game handled. If the shot ended up being draw across both mushrooms, then the upper mushroom would record the collision. Now, the collision we care about most is the lowest one which should ensure that the bottom mushroom records to collision always with stacked mushrooms. This is similar to the "shoot through a partial mushroom" problem but is restricted to just when the mushrooms are stacked.
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2020-12-26 15:03:29 -05:00 |
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Jeremy Rand
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a5296ee1b8
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Fix the bug where shots can pass through a mostly destroyed mushroom, this time for real.
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2020-12-25 22:26:13 -05:00 |
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Jeremy Rand
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fd40c12d31
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Explode a bug when it crashes into the player. When the last segment collides with the player, go onto the next level.
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2020-11-18 23:36:01 -05:00 |
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Jeremy Rand
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4e6bad0ae7
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Start adding the code for supporting shooting.
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2020-11-16 00:14:08 -05:00 |
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Jeremy Rand
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6e49c4c483
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Add sprites for ship explosions which are different from the other explosions.
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2020-11-10 00:07:10 -05:00 |
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Jeremy Rand
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c24b8ad072
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Change the spider score colour to be the same as mushroom colours so the player does not detect it as a collision. Add code to display the number of lives and add to the number of lives ever 12,000 points. This lays the groundwork for handling player death and collisions.
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2020-11-09 00:12:51 -05:00 |
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Jeremy Rand
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0fa9b45f45
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Rework the LHS side of the game screen to have some BuGS branding. Move the number of lives indicator to the left and add a player 1 and player 2 section.
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2020-10-27 23:59:06 -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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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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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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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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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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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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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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Jeremy Rand
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e5378bf5cb
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Add some info to the sprite design document about my plans for handling clipping.
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2020-07-02 23:06:02 -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 |