{Need Help!} Random Coord Generator and Moving Object There!

[Bradyviz]

Is there a way to find random coordinates and then proceed to move an object there? This is another extension of the Cannonballs! Tutorial that I did and after the "intersect" command, I now am stuck on someone telling someone the sliders to move to a certain area and hitting the target. Anyone know what to do to make it generate random coordinates?

Thanks!

[bn]

Hi Bradyviz,

look up the random function in the dictionary. There is also an example to get a random number from a lower/upper range. Do that for the x and the y coordinate and there you are.

regards
Bernd

[Bradyviz]

As you can probably now guess, I am REALLY feeling stupid right now. After the example, I still can't find a way to get the random number in any way whatsoever. When I click the button that is supposed to give me a number when I tested it, nothing happens. When I tell it to put the number into a field, it says there is an error. Any Tips?

[bn]

Hi Bradyviz,

please post your script. You can use the "Code" tab and paste your script in there

regards

Bernd

[Klaus]

Hi Brad,

I also highly recommend to go through these stacks to get the basics of Livecode:
http://www.runrev.com/developers/lesson ... nferences/


Best

Klaus

[Mark]

Hi,

It is not necessary to shout "need help" in the subject of your script. If a new thread is opened in any other section than the announcements section, it is most likely going to be a "need help" subject. Now, if you don't mean to ask for help, you still don't need to shout but you can write in small capitals and everybody will still hear you. Please, mind your netiquette.

Kind regards,

Mark

[dunbarx]

Is your problem just generating a random point? Try:

On mouseUp
put item 3 of the rect of this card into xMax
put item 4 of the rect of this card into yMax
put random(xMax) & "," & random (yMax) into tRandomCoord
answer tRandomCoord
end mouseUp

This will give you a point within the rect of the card window.

Craig Newman

[Bradyviz]

The code

On mouseUp
put item 3 of the rect of this card into xMax
put item 4 of the rect of this card into yMax
put random(xMax) & "," & random (yMax) into tRandomCoord
answer tRandomCoord
end mouseUp

did work to make a random point. But the problem is I already have 2 rectangles in the card so it selects the sky (or grass, not sure) but not the rectangle I want. I am experimenting for an hour right now but if anyone has a an idea right now while this I am experimenting that knows please let me know!

[Janschenkel]

Assuming you have a rectangle "Bounds" within which you want to determine a random point, try this:

Code: Select all

on mouseUp
  put (the left of graphic "Bounds") + random(the width of graphic "Bounds") & comma & \
      (the top of graphic "Bounds") + random(the height of graphic "Bounds") \
      into tNewPoint
  answer tNewPoint
end mouseUp

HTH,

Jan Schenkel.

[bn]

Bradyviz,

suppose you have an area (rectangle) where you want ramdom coordinates from.

Suppose the rectangle is the rectangle of a hidden graphic (areaOfInterest)

for the x coordinates you want a value between item 1 of the rect and item 3 of the rect
for the y coordinates you want a value between item 2 and item 4 of the rect.
I the dictionary entry for ramdom is a function:

function randomInRange lowerLimit,upperLimit
return random(upperLimit - lowerLimit + 1) + lowerLimit - 1
end randomInRange

supposet the rect is called tRect and has "100,400,200,500" as values.

you could code your script:

Code: Select all

on mouseUp
   put "100,400,200,500" into tRect
   put randominrange(item 1 of tRect, item 3 of tRect) into tX
   put randomInRange(item 2 of tRect, item 4 of tRect) into tY
   answer tX & comma & tY
end mouseUp)

function randomInRange lowerLimit,upperLimit
   return random(upperLimit - lowerLimit + 1) + lowerLimit - 1
end randomInRange

this would give you random coordinates within the rect that you want.

I just see that Jan has posted something that amounts to the same, I post nevertheless.

regards
Bernd