Help with accelerometer controls. Transition is choppy.
Hey guys,
I'm making a game where im controlling a flying vehicle with accelerometer controls. So I have it so that when attribute.rightis on is true, change attribute.leftison to false then accelerate right at speed 150. Then if attribute.leftison is true, then turn attribute.rightison to false and accelerate left at speed 150.
But the transition is not smooth. The vehicle slows down for a second (because the 150 going left is fighting with the 150 going right) then it flys in the opposite direction. I need it to be very sensitive for my game.
Its probably a very similarly easy question to the one @Braydon_SFX @jamie_c @SlickZero answered, although it sounds complicsted.
All help is appreciated.
Thanks
I'm making a game where im controlling a flying vehicle with accelerometer controls. So I have it so that when attribute.rightis on is true, change attribute.leftison to false then accelerate right at speed 150. Then if attribute.leftison is true, then turn attribute.rightison to false and accelerate left at speed 150.
But the transition is not smooth. The vehicle slows down for a second (because the 150 going left is fighting with the 150 going right) then it flys in the opposite direction. I need it to be very sensitive for my game.
Its probably a very similarly easy question to the one @Braydon_SFX @jamie_c @SlickZero answered, although it sounds complicsted.
All help is appreciated.
Thanks
Best Answers
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RThurman Posts: 2,881
@Chakku
I don't think anyone wants to help you now because you are rejecting those who answer. This is definitely _not_ nice. I suggest you go back and accept the answers you were given.
I assume you think that accepting an answer means that the issue is closed and that you don't want more help. This is not the case. Accepting does not mean that you don't want more help. It actually means you are thanking them and accepting what help they have offered.
----
Now, on to an answer that I hope is _not_ rejected.
It seems you have two issues that you are trying to solve. First, you are concerned that the tilt controls are too sensitive. Second, you want the object to have some residual momentum before it begins going the other way. (You want it to smoothly slow down, and then reverse direction.) Lets work on the second issue (and maybe the first issue will go away).
Make a new actor and test to see if this is the kind of acceleration/deceleration you want:
Rule:
When key (right arrow key) is down:
-- Accelerate
---- Direction 0
---- Relative to scene
---- Acceleration 150
Rule:
When key (left arrow key) is down:
-- Accelerate
---- Direction 180
---- Relative to scene
---- Acceleration 150
Test this out (using the arrow keys) and confirm that it has the slowing and reversing you want. If yes, we can work on tilt controls. -
Glad you feel you are getting there. How about trying this on the actor:
Go to the actor attributes (on the left) and under the motion attributes, set "Max Speed" to 200. Check the "Apply Max Speed" box.
Then modify the behaviors from the previous test.
Rule:
When key (right arrow key) is down:
-- Accelerate
---- Direction 0
---- Relative to scene
---- Acceleration 1000
Rule:
When key (left arrow key) is down:
-- Accelerate
---- Direction 180
---- Relative to scene
---- Acceleration 1000
This will have the effect of making the acceleration ramp up very fast, but it will never go faster than 200. (It will speed up the transition time -- but not too fast).
--------------------------
Finally, when you have it working like you want, transfer this back to your original actor. Use this with your "attribute.rightison" and "attribute.leftison" rules (instead of the keydown rules).
Answers
In simpler worlds, I want to control a rocket with tilt thats flying and i want it to sensitively move right or left using the accelerometer.
so basically sensitive tilt-based controls.
I've tried all the tutorials, but i seem to be doing something wrong.
Now this is probably very easy to the GS Pros out there, so can anybody help?
Instead of using "Accelerate", you would use "Rotate" and play around with the rotation speed to get the desired effect. I've used this method in a lander type game I had a couple of years ago, and it worked great.
yes, I watched that video. I'm not saying it doesent work. But when im tilting right, then i change to tilt left, it slows down for a second..then flies left! There is no balance and it looks weird.
My game needs precision sensitive tilt controls.
Are sensitive tilt controls possible in GameSalad?
Thanks for the reply.
Thanks for the reply.
3 Attributes (Real):
1. accelX (new filtered accelerometer X output)
2. accelY (new filtered accelerometer Y output)
3. kFilteringFactor (smoothness amount... a number between .01 and .09 usually)
Constrain accelX = (acceleration.x * kFilteringFactor) + (accelX * (1.0 - kFilteringFactor))
Constrain accelY = (acceleration.y * kFilteringFactor) + (accelY * (1.0 - kFilteringFactor))
Second, convert your accelerometer output to movement:
Example:
Move left and right on X-Axis
1 Attributes (Real):
1. speedAmt (most likely 25 to 300)
Move Behavior:
Direction = 0
Relative to Scene
Move type = additive
Speed = ((accelX * 10) * speedAmt)
Note you may have to change 10 to -10 in the Speed equation to reverse direction of actor
Thanks for the reply.
Did it work, Because this is most deffinately an issue with real attributes?
How do i get the acceleration.y attribute?
Thanks a lot for your help
I too am making an accelerometer game. I followed the video tutorial and have had moderate success with simply using the x axis accelerometer controls linked to an acceleration behavior. I, like the video, simply did something like IF character is greater than a certain x coordinate than move left (or right- depending obviously on the coordinate). The sensitivity was set to .01 like the video. But you seem to be talking about some kind of filtering or smoothening. Can you explain that? I'm sure it'll help with the original question as well. Your example seems to be far more complex, but ultimately far superior for sensitivity and accuracy. Any help would be phenomenal. Thank you!
I will try out your arrow key suggestion next time I get to my Mac.
Oh, and very important FYI, my tilt controls ARE NOT very sensitive and I want them TO BE sensitive. But you are correct of my 2nd problem of needing a smooth transition between changing directions.
Thanks for your reply.
Chakku
Converting to tilt is what's not working for me.
Really appreciate your help.
Thanks,
Chakku