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#1 2010-09-01 21:25:14
- Sunrise-Moon
- Scratcher
- Registered: 2009-06-27
- Posts: 1000+
Slope Detection?
How can I accurately make a ball detect/roll on a slope?
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#2 2010-09-01 22:18:25
- Paddle2See
- Scratch Team
- Registered: 2007-10-27
- Posts: 1000+
Re: Slope Detection?
If you are using straight line slopes...you can use separate sprites for each different slope and have them sense when the ball is touching them and set the slope that the ball uses. That's how my Marble Kit project works 
Another approach is to actually measure the slope using some sensor sprites...but that usually takes a fair amount of time and adds lag to the project. It's the best way to go, though, if you are dealing with an uneven surface.
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#3 2010-09-01 22:36:21
- Sunrise-Moon
- Scratcher
- Registered: 2009-06-27
- Posts: 1000+
Re: Slope Detection?
Paddle2See wrote:
If you are using straight line slopes...you can use separate sprites for each different slope and have them sense when the ball is touching them and set the slope that the ball uses. That's how my Marble Kit project works
Another approach is to actually measure the slope using some sensor sprites...but that usually takes a fair amount of time and adds lag to the project. It's the best way to go, though, if you are dealing with an uneven surface.
I just made slope sensors- side sensors that are a bit elevated. If they are touching a wall/color, they'll activate and add a bit to the velocity.
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#4 2010-09-02 16:45:13
Re: Slope Detection?
Check out this slope detection. It uses exactly what Sun-Rise Moon uses.
http://scratch.mit.edu/projects/project1/1234179
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