Using Expressions to stop and start movement of solid layers

Question

I have two solid layers ( a red square and a blue square). The position of the red square is [129,239] and the blue square is to the right of the red square with a position [301, 240].  I would like the blue square to move to the right for 2 seconds, 1 second after I start the timeline.  When the blue square stops moving I would like this to trigger the red square to move to the right for 2 seconds.  I would like to perform this using all expressions code without creating keyframes on the timeline and I'm having trouble.  Please help!
Thanks

Answer 1

You didn't say how far you want the solids to move in 2 seconds so this example assumes 100 pixels to the right.
Red position:
dist = 100;
startPos = [129,239];
linear(time,3,5,startPos,startPos+[dist,0])
Blue postion:
dist = 100;
startPos = [301,240];
linear(time,1,3,startPos,startPos+[dist,0])
Dan