jetpac.nes/src/driver.s, branch mainPort to the NES/Famicom of "Jetpac" from Ashby Computers and Graphics Limited.
https://git.mssola.com/nes/jetpac.nes/atom?h=main2026-04-13T14:34:11ZAdd sound effects2026-04-13T14:34:11ZMiquel Sabaté Solàmssola@mssola.com2026-04-13T14:34:11Zurn:sha1:aef156ac6216ed157b06a2872ba051af43317e93
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Fix bogus comments2026-04-06T19:52:29ZMiquel Sabaté Solàmssola@mssola.com2026-04-06T19:52:29Zurn:sha1:a26d621b1f6157f742ecd40e5ad7c4636a855d83
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Clear out sprites after the take off animation2026-04-06T19:43:44ZMiquel Sabaté Solàmssola@mssola.com2026-04-06T19:43:44Zurn:sha1:f9ca8ca80b9d0cf0d54f9aa59a3fbb517c37fc9c
This was hidden before commit 134c671e18b6 ("Cancel the take off
animation before shuttle change"), as the sprites and the background
matched perfectly. That wasn't the case in the case where the shuttle
kind was to change.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Cancel the take off animation before shuttle change2026-04-05T21:57:16ZMiquel Sabaté Solàmssola@mssola.com2026-04-05T21:57:16Zurn:sha1:134c671e18b6617b1ac2417ff4efaa8c6b8fc4b6
Just as it was on the original game, if we cleared the stage right
before changing the shuttle kind, then we don't go down again.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Add a table with tile IDs for shuttle parts2026-04-03T20:32:52ZMiquel Sabaté Solàmssola@mssola.com2026-04-03T20:32:52Zurn:sha1:1963d7d8dd70ee9bc4cf9b81363aeab440a6f786
This will allow us to select the proper shuttle depending on
'Globals::zp_shuttle_kind'. Hence, now only the actual shuttle parts on
the CHR file are missing, which is why I left a couple of TODOs on the
table itself.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Cycle 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>
Remove lowest part of the shuttle from sprites2026-04-02T06:06:10ZMiquel Sabaté Solàmssola@mssola.com2026-04-02T06:06:10Zurn:sha1:ba2711cb490c26e05c1b8f6cd3e1d081309d15fd
On the sprites tileset, the lowest part of the shuttle is not needed
since that is only used as a sprite on take off, but then the firing
variant should be picked instead. Remove it from the CHR file and update
tile IDs.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Save the high score after game over2026-03-27T09:48:53ZMiquel Sabaté Solàmssola@mssola.com2026-03-25T22:44:29Zurn:sha1:63939a5c86c5678347f41f877e562b58236782df
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>
Use the 'nmi_' prefix for NMI-only functions2026-03-23T23:34:26ZMiquel Sabaté Solàmssola@mssola.com2026-03-23T23:34:26Zurn:sha1:b779e7dc3d44f7b9d90aeeee91ed36cf57d65e95
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>