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Improve portability and multiple fixes #13

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Improve portability and multiple fixes #13

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Commits on Feb 12, 2024

  1. Makefile: simplify and use pkg-config for SDL2 

    This allows for improved cross-platform building. Tested working on
Windows 10 in a MinGW64 (w64devkit) development environment with the
following commit.

Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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  2. main: use SDL functions only 

    Removes mmap() and other non-portable instructions. Only SDL2 functions
are used now. Tested working on Windows 10 in a MinGW64 development
environment.

This may fix issue binji#1, whereby a crash happens if rom.sav is not found.
Now, if rom.sav is not found, 32kB is allocated, and then later saved on
exit. Not tested on macOS.

Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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  3. main: add frame timing 

    Fixes issue binji#10 whereby gameplay would run at the speed of the monitor
refresh rate. A delay is automatically calculated on each frame to slow
down the gameplay if required. Note that this does not speed up the
gameplay if the monitor has a refresh rate lower than 59 Hz. In such
cases, VSYNC should just be disabled in the source code.

Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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  4. main: use SDL instead of inttypes.h 

    Might help reduce the number of bytes in the obfuscated version, and
hopefully compensate for the additions made in the previous commits.

Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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  5. main: center window & misc changes 

    Reduced length of variable name. Although this doesn't matter as it will
become obfuscated anyway.

Reduce speed_compensation calculation to single line.

Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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  6. main: fix running too fast when vsync off 

    Signed-off-by: Mahyar Koshkouei <[email protected]>
    @deltabeard
    deltabeard committed Feb 12, 2024
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