jetpac.nes/include/globals.s, branch mainPort to the NES/Famicom of "Jetpac" from Ashby Computers and Graphics Limited.
https://git.mssola.com/nes/jetpac.nes/atom?h=main2026-04-02T12:40:12ZCycle the kind of shuttle to be used2026-04-02T12:40:12ZMiquel Sabaté Solàmssola@mssola.com2026-04-02T12:40:12Zurn:sha1:cb1111055f7b03989daac63675d27bfd156a4e21
In preparation to having multiple kinds of shuttles as in the original
game, introduce the 'Globals::zp_shuttle_kind' variable, which is just a
helper value by masking out the 'Globals::zp_level' variable. This in
turn will be the index for selecting which tile IDs for each shuttle
part.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Update scores on screen2026-03-25T21:40:48ZMiquel Sabaté Solàmssola@mssola.com2026-03-25T21:40:48Zurn:sha1:63ef73de3bdd698ab250407354e24a6de7c9ef20
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Initial implementation for items2026-03-11T22:44:13ZMiquel Sabaté Solàmssola@mssola.com2026-03-11T22:44:13Zurn:sha1:9ae51a4c210b8f01718e21eda592c498715a642b
This now only supports the appearance of shuttle parts and the fact that
the player can collect them at a very specific order and drop them so to
stack up the final shuttle.
This is of course just the skeleton and there's a bunch of TODO's left.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Add a blinking animation on player selection2026-03-08T22:19:17ZMiquel Sabaté Solàmssola@mssola.com2026-03-08T22:19:17Zurn:sha1:b891997ab597056c1a3ee26b7de0340dcb5e2e2f
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Define the bitmap for multiplayer support2026-03-08T15:50:06ZMiquel Sabaté Solàmssola@mssola.com2026-03-07T22:27:28Zurn:sha1:220c80b987ba54d709180e3d95e9e0d82af4249c
Also give it a dummy value on start and initialize it properly after the
player's selection on the title screen.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Add collision with the player2026-03-04T21:53:35ZMiquel Sabaté Solàmssola@mssola.com2026-03-04T21:53:35Zurn:sha1:0c5af85cc0cb9bb39a3a72548e735b92daf0a28f
This allows for explosions to run after making the player to disappear,
and it re-runs the entering scene timer.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Add a pool of explosion effects2026-03-03T17:47:42ZMiquel Sabaté Solàmssola@mssola.com2026-03-03T17:47:42Zurn:sha1:d71a38f3223dd90ad59b706321de87d60c0ed666
For now this only applies to enemies, but it's general enough so it can
target any given coordinate, and hence any given object.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Initial iteration of enemy movement2026-02-12T21:22:08ZMiquel Sabaté Solàmssola@mssola.com2026-02-12T21:22:08Zurn:sha1:c1e02814a8f5dffc8da80c45b96ccbfe92bdfc49
For now only the basic algorithm has been written, but the framework for
adding the rest has also been written down.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Allocate all enemies on sprite cycling2026-02-10T15:11:08ZMiquel Sabaté Solàmssola@mssola.com2026-02-10T15:11:08Zurn:sha1:29c2f3b8b4eb1bd8190d8ed302d172c54efc1450
The previous commit only tackled the first enemy, this one handles the
"rest_o_enemies" code flow, which was entirely missing.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
enemies: add inner movement and facing logic2026-02-10T14:19:56ZMiquel Sabaté Solàmssola@mssola.com2026-02-10T14:16:21Zurn:sha1:a6bd59a138673b78bc3da39096546b6725590a29
Enemies now have the ability to be displayed on screen, face at the
direction that they were assigned to at random during initialization
time, and they also have a timer that dictates some inner movement,
similarly as it happened in the original game.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>