move an actor radomly

thelittledevil

Does anyone know how to make an actor move by itself in a ramdom way? to make it clear like the movement of flies.

firemaplegames

Use a mix of Interpolate and Timers, like this:

In the actor, create two integer attributes: randomX and randomY

Then set up a Timer, like this:

Timer Every 2 seconds
-----Change attribute: self.randomX To: random(0,480)
-----Change attribute: self.randomY To: random(0,320)
-----Interpolate self.Position.X To self.randomX duration 2 seconds
-----Interpolate self.Position.Y To self.randomY duration 2 seconds

Something like that should do it.

thelittledevil

I can't make it work. How can I put the "self.randomX" or "self.randomY"??? everytime I write it down at the change attribute it changes to "game.randomX"

the rest is ok. It doesn't change

Rob2

you can get away without the change attributes

StusApps

When you are inside that actor click the plus on the left of the screen and make an attribute for just that actor.

firemaplegames

Oops. Yes, rob is correct.

Forget the attributes. Just use:

Timer every 2 seconds
-----Interpolate: self.positionY to: random(0,320) 2 seconds
-----Interpolate: self.position.X to random(0,480) 2 seconds

thelittledevil

heyyyyy that was perfect. It works now!!!

THANKS!!!

thelittledevil

Ok another problem. Is there any way to make the actor rotate so every time it changes it's path it is looking to the new direction?

By now it moves around as I was expecting but it looks like it's moving backwards or from left to right... as it doesn't rotate with every change.

synthesis

To do that...you will need to track the X and Y target position and then use the rotate to position behavior.

Ex:
self.TargetX=random(0,360)
self.TargetY=random(0,480)
Interpolate: self.position.Y to self.TargetX (2 seconds)
Interpolate: self.position.X to self.TargetY (2 seconds)
rotateToPosition: self.TargetX and self.TargetY

Another way is to do this:

self.TargetX=random(0,360)
self.TargetY=random(0,480)
rotateToPosition: self.TargetX and self.TargetY
Move

Place that inside a timer if you want it to change direction every few seconds.

thelittledevil

Do I have to create an Integer for those Target.x and Target.Y because I can't find it anywhere!!

Rob2

@fmg...what about smooth continuous movement at a constant speed...a whole new approach required?

firemaplegames

@rob: I actually need something like that in my new game. I have a fish swimming around. I was going to try to have a zigzagging actor like described above. And the fish follow it with a move to behavior or something. I'll be tackling that in the next few days and I'll let you know.