Moving an actor repeatedly between two points

Comments

• msones Inactive, Chef Emeritus Posts: 75

  February 2011

  There's a couple ways you can do that. One is to use the interpolate or move behavior with a rule that says "when actor's position = #, move or interpolate to #2", and another rule that says "when actor's position = #2, move to #".
  
  Another way to do it is with timers - "every 2 seconds, move (or interpolate) to position X; after 1 second, every 2 seconds move to position Y".
  
  I'm sure some of the other devs around here can suggest other methods. :-)
• POM Member Posts: 2,599

  February 2011

  @mrc
  Hey there
  Next time try to make the title more informative ..
  
  Sure you can use the examples above to achieve the goal you want.
  Another way to do this ( my favorite ) is to put a simple constrain rule:
  Constrain self position y to sin(self.time*speed)*pixels to move + middle
  
  Speed- any number- the higher you put the faster.
  
  Pixels to move - any number- your actor will move this number of pixels up from "middle" and the same number of pixels down from "middle"
  
  Middle: the initial Y position of your actor when it starts moving up and down (don't use self.position, put an actual number)
  
  Hope it helps.
  
  Roy.
• mrcrookz Member Posts: 9

  February 2011

  thank you msones greatly appreciated i used the second method :]
  thank you roy i will try this method as well see how it works
• ORBZ Member Posts: 1,304

  February 2011

  speed = 100
  distance = 500
  
  constrain self.position.y = sin(game.time*speed)*distance
  
  see my trig101 demo under my profile
  
  edit: oops i didn't see someone had already posted this before me