jb: option to draw debug graphics to show touch interactions (#797)

muskit/spice2x.github.io

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## Link to GitHub Issue or related Pull Request, if one exists
related to #697 

## Description of change
Add a new option that paints touch targets and touch points for jubeat;
gets enabled if there is a touch screen connected. This is to help
explain / debug issues when users have their touch screen issues, which
is usually due to misalignment.

Fix the touch targets being off by 1 pixel (center gap is 1px wider in
both directions).

Also, simplify the `improved` algorithm to simulate a finger and trigger
nearest-neighbor for the AC dimensions. In terms of touch performance
this is near identical to what we had before, but it allows us to draw a
nice debug overlay instead of just grids.

## Testing
Tested portrait and landscape versions of jb.

This commit is contained in:

bicarus

2026-07-13 00:31:05 -07:00

committed by

GitHub

parent d7c144646f

commit c255e3a1db

10 changed files with 616 additions and 307 deletions

									
										src/spice2x/CMakeLists.txt
									
		+1
		
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				@@ -412,6 +412,7 @@ set(SOURCE_FILES ${SOURCE_FILES}

				        games/sdvx/io.cpp

				        games/sdvx/camera.cpp

				        games/jb/jb.cpp

				        games/jb/jb_touch.cpp

				        games/jb/io.cpp

				        games/nost/nost.cpp

				        games/nost/io.cpp