Algodoo

Hi,
I have a few suggestions that will make this barrier move up and down more realistically. Here are my suggestions:

1. There are two axles, a big one and a small one. Delete the small one because it is not needed.
2. On the big axle, make the following changes: Check the check boxes labeled Brake and Reversed. Change the motor speed to 1.00 rpm. Leave motor torque at 2700 Nm. Make the "up" arrow key the Forward key, and make sure all three "Toggle" check boxes are not checked. The Back key is still "Down", and Toggle is not checked. No brake key is needed because it is now automatic!

With these changes, the user must press and hold the down arrow key to make the barrier move down, and press and hold the up key to make the barrier move up. If either up or down key is released while moving, the brake will automatically stop its motion. Try this and see if you agree that it works more like a real railroad barrier!

yea. but in indonesia is manual

sorry. i,m indonesian kid

No need to apologize. You are who you are. Just be the best that you can be!

can you speak indonesia?

Now i,m done!

do you like this?

Yes, nice work!

yyyyyyyyyyyyyyyeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee­eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeessssssssss­!!!!!!!!!!!!!

wait,wait,wait do you mean like american railroad crossing?

but in indonesia is not like this right?

I don't know anything about Indonesia, but here in the USA, the red lights flash like this: (left)-(right)-(left)-(right) and they continue to flash until the train goes by and the barrier arm is completely raised back up.

By the way, the keyboard control keys do not operate as you describe. Here is what I discovered: The DOWN arrow key is a brake. Press it once, and the brake engages. Press it again and the brake releases. The UP arrow key alternates between moving the arm UP and Down each time it is pressed (as long as the brake is not engaged).

how to make the red light flash alternately?

Here is a scene that I created for someone else many years ago. Please go ahead and copy anything you need from it!

RR Crossing Lights

I've copied the script but the red lights flash together

That's because you copied only one light and used it for both left and right lights in your scene! That won't work because the left and right lights have different scripts in them. Copy BOTH lights and use BOTH of them in your scene. Also, I see that you changed the RGB values for color. Do not make any changes to the script unless you know what you are doing.

In addition to those lights as I mentioned above, there are a couple of other things that will improve how your scene operates.

1. Remove the collision layers from the red light located near the end of the barrier arm because it interferes with the sign that reads "Awas Kai". You can also remove the collision layers from the sign if you want to because they serve no purpose.

2. In the axle that moves the barrier arm, check the checkboxes labled "Brake" and "Reversed". The "Motor" checkbox should not be checked. Also the "forward" direction should be controlled by the "up" key (do not check the "toggle" checkbox). The "reverse" direction should be controlled by the "down" key (do not check the "toggle" checkbox). To raise or lower the barrier arm, simply press and hold either the up key or down key until the arm is fully down or fully up.

After you make these changes, the RR crossing should work correctly.

yes but i,m soooooo tired

No problem. Get some rest and then later decide if you want to improve this scene. I only make suggestions, but it's your decision if you want to spend any more time on it. You don't have to fix it if you don't want to.

OOOUKAY!:) (OK!)

Anyway thank your suggestions! I hope you don't mind if I ask for your help again about my project later:)

sorry if my english is not quiet good...

Your English is as good or even better than many people who use Algobox!

Yes, I would be happy to assist you if you have questions in the future. Helping people is part of my job here on Algobox.

thank you Sir. oh btw,I'm a 3rd grader kids.so I'm still a newbie in algodoo

You're only in the 3rd grade? Wow, you are very smart for your age! I believe that you have a bright future ahead.

My suggestion is keep learning as much as you can about science and math, and then as an adult you will be very successful because smart people usually get high paying jobs.

oh, learing and science that was the same as what my mother told me

if i turn the backround to black. I thought it might very very cool

Ok, sorry Xray. I just change my laptop from Windows to Linux.