Asked
Hello,
I need some help with JavaScript in ARC robotics programming. I have a script that runs perfectly but requires an adjustment to handle exceptions without stopping entirely.
Here’s a summary of how the script currently operates:
- The script loops every 15 minutes (900,000 milliseconds).
- It uses
ControlCommandto start three separate scripts, one at a time. This parent script pauses after starting each one until they complete, then loops again after waiting 15 minutes. - A Global Variable is set to indicate that it's running, preventing other scripts from starting simultaneously.
- It checks for a Global Variable that might be set by another script in ARC. If this variable is detected, the parent script will not run.
The issue arises when the script (or others) detects that Global Variable and does not start, causing the loop to break and the script to stop.
I would like the script to check for the Global Variable and, if detected, skip its action but keep the loop running. This way, the script will continue to loop and attempt to run again later.
Here’s my current script. How can I structure it to maintain the loop even if the script needs to skip a cycle because another script is running? Thank you!
while (true) {
// Personality action wrapper - JavaScript
// Skip if another personality action is running
if (getVar("$Personality", "0") == "1") {
print("Personality: busy - skipping");
// Do not return; instead, loop to continue checking.
// sleep(900000); // Uncomment this to maintain the loop.
continue;
}
// Mark running
setVar("$Personality", "1");
// ---- Put your personality actions below ----
ControlCommand("Head Section", "ScriptStart", "Bubble Full Down");
// Temp
//---------------
setVar("$OutsideTemp", 1); // Sets Variable so Script will run
ControlCommand("Time, Date & Temp", "ScriptStart", "Outside Temp");
while (getVar("$OutsideTemp") == 1) { // Pause script for Temp report
sleep(100);
}
// Humidity
//----------------
setVar("$Humid", 1); // Sets Variable so Script will run
ControlCommand("Time, Date & Temp", "ScriptStart", "Humidity");
while (getVar("$Humid") == 1) { // Pause script for Humidity report
sleep(100);
}
// Wind Speed
//-----------------
setVar("$WSpeed", 1); // Sets Variable so Script will run
ControlCommand("Time, Date & Temp", "ScriptStart", "Wind Speed");
while (getVar("$WSpeed") == 1) { // Pause script for Wind Speed report
sleep(100);
}
ControlCommand("Head Section", "ScriptStart", "Bubble Middle");
// ---- End of actions ----
// Clear lock
setVar("$Personality", "0");
sleep(900000); // Pause script for 15 minutes
}
Related Hardware EZ-B v4
Related Controls
Script
On Variable Changed
LOL! Looks like the AI @Athena fixed the script as I posted it. There is a new line in there that I did not write. I'll see if this works. .
FYI, Here's what I had:
You could also just use ScriptStartWait ControlCommand instead of looping to wait for another script to finish. ScriptStartWait will wait for the other script to finish before continuing.
OK, I haven't tried this new script yet but I see a potential problem.
It look like what the change does is pause another 15 minutes and then runs no matter what. However I need the script to again check if another script is running the next time it's set to start. It can keep doing this until it sees no other script is running.
You can also use the GetStatus ControlCommand to check if a script is running.
No, what the change did was continue the looop to keep checking if the global variable $Personality has a string that contains "1"
Also, note that sometimes you're using a string "1" and other times you're using a number 1
You should choose to pick one.
When athena answers she'll add more detail to my responses.
Nice work - you’re on the right track. Below are two safe, robust options you can use in ARC JavaScript so your parent script never exits its loop and always re-checks the $Personality lock before attempting work.
Key points:
Option A - Preferred (use ScriptStartWait). This will wait for each child script to finish and will skip the entire cycle if $Personality is busy, then re-check after 15 minutes:
Notes for Option A:
Option B - If you must keep your current child-signal polling (less preferred):
Extra tips & tools:
Resources:
Would you like me to:
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