| Commit message (Collapse) | Author | Age | Files | Lines |
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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>
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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>
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This counter is useful to account for certain numbers in hot spots. This
way, and with a memory viewer or a debugger, you can directly tell
whenever something is off.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
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Instead of this, the 'reset' function can go into 'jetpac.s', as we
could consider it's part of the 'main' work. As a bonus, doing this
alignment gives us 3 bytes back from ROM space. Not that we care too
much about space, but it's amusing nonetheless.
The debug scope has been moved into its own file in include/. Admittedly
it's not the most crucial file in the project, but it makes things more
logical and it opens the door to more debugging utilities.
This leaves us with a vector.s file only containing interrupt
code. Thus, it just makes sense to rename it to interrupts.s, which in
the end makes things more organized.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
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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>
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Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
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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>
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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>
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The 'nasm' assembler now implements this, which is quite
convenient. Define also a fake macro for it when the assembler is not
'nasm' just to bridge the gaps.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
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The address sanitizer from nasm provides quite a few goodies, so let's
adapt the code more to it to benefit from those.
Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
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Possibly not an issue, but it's better to be safe than sorry.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This is for now just a variable that will be set during initialization,
and that it can be influenced through the `LEVEL` make variable. Both
the level and the level "kind" notions are used tracking, at least,
which kind of enemy wave we have to send.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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During other transitions like game over and such it might also be needed
to have something similar, but for now this should cut it.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This commit adds the skeleton for having a title and a main screen. For
now the title menu doesn't do much, as the selection is simply ignored,
but at least it already knows how to cycle between these two states.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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