can i exclude a number from a random number?

guilleface

hi, i have a actor that when collides with trigger it changes self. att. direction to random(1,4)
when self. direction =1 move 0 degrees related to scene.
when self. direction =2 move 180 degrees related to scene.
when self. direction =3 move 90 degrees related to scene.
when self. direction =4 move 270 degrees related to scene. but i would like to exclude the attribute from the direction is coming. say if direction is 0, then to choose a random from 2,3,4
if direction is 180 to chose random from 1,3,4
pretty much i don't want to go back from the direction is coming. thanks in advance

JohnPapiomitis

you could make a attribute called lastDirection

so change self.direction to random(1,4)
then in the same rule change lastDirection to self direction

then another rule if lastDirection = self.direction
change self.direction to random(1,4)

what that will do is as soon as the random number is the same as the last number it pulled, itll change it again and keep changing till its not the same

There might be a better way to do it, but that should work

cheers

allornothing

Could that not all be the one rule?

i.e.
if lastDirection = self.direction
change self.direction to random(1,4)
otherwise:
change.self.direction to random (1,4)
change lastDirection to self.direction

or is my logic wrong? Trying to tune my brain into this kind of thing so apologies if incorrect.

ozboybrian

Just set up a rule. If the number you don't want is 8.

Rule - If att = 8 Random Number.
So it'll keep randomising till it gets a different one.

Easy

3xL

Oz boy beat me to it

I was also gonna suggest something like

If attribute is not 8
Then blah blah blah

But the other way seems better

guilleface

hey guys thanks alot but i dont know is not working maybe because i have to change the attribute every .20 seconds when collide with trigger, i thought about a game similar to pacman so sometimes say if actor is traveling up when collides with trigger the only option is left or right, so say it choose to go up but since is hitting a wall it wont move so thats why i add every .20 so if gets stuck moving into a wall,since is still colliding with triiger it will random pick another position , at this moment i want to chose anything except going back from where it came,

aario

Its pretty simple really all you have to do is make a table.. so ill walk you through it

column 1 <2,3,4>
column 2 <1,3,4>
column 3 <1,2,4>
column 4 <1,2,3>

Type everything in as shown then in your rule use the following..

when self.Direction=1 change self.Att to tableCellValue(Table1,random(1,3),column 1)
when self.Direction=2 change self.Att to tableCellValue(Table1,random(1,3),column 2)
when self.Direction=3 change self.Att to tableCellValue(Table1,random(1,3),column 3)
when self.Direction=4 change self.Att to tableCellValue(Table1,random(1,3),column 4)

I havent tested it but that should work for you!

Goodluck,
Aaron

guilleface

this looks good , i will try this tomorrow thank you.