Positioning Relative to Angle and Distance

  • Hi

    This seems like it shouldn't be that hard but I feel like I've hit a wall. Any help would be gratefully received.

    I want to position sprite01 relative to sprite02

    Sprite01 has two local variables: angle, and distance.

    I want to position sprite02 relative to sprite 01 according to the angle and distance stored in the local variables of sprite 01

    Should I be using trigonometry here or am I missing something really obvious?!

    Thanks

  • Hi

    This seems like it shouldn't be that hard but I feel like I've hit a wall. Any help would be gratefully received.

    I want to position sprite01 relative to sprite02

    Sprite01 has two local variables: angle, and distance.

    I want to position sprite02 relative to sprite 01 according to the angle and distance stored in the local variables of sprite 01

    Should I be using trigonometry here or am I missing something really obvious?!

    Thanks

    you could use the Angle(x1, y1, x2, y2) and distance(x1, y1, x2, y2) expressions I think for that, like this:

    Sprite01 : Set instance variable distance to: distance(Sprite01.X, Sprite01.Y, Sprite02.X, Sprite02.Y)

    Sprite01 : Set instance variable angles to: angle(Sprite01.X, Sprite01.Y, Sprite02.X, Sprite02.Y)

    EDIT: I think I understood that you wanted to store the angle and distance, but if you'd rather set the position using this, then you'd have to:

    Sprite02 : Set X to Sprite01.distance*cos(Sprite01.angles)

    Sprite02 : Set X to Sprite01.distance*sin(Sprite01.angles)

    (I used the name "Angles" for the variable since I am not sure you can use the word "angle")

  • What do you mean by "relative"? Do you mean in front of it? Or should sprite01 keep the angle, distance and everything else relevant to sprite02 if it moves?

  • Just to be super clear, I want to calculate the co-ordinates of the orange square.

    [attachment=0:11531gzl][/attachment:11531gzl]

    I know:

    • Green square co-ordinates
    • Angle (potentially any value between 0 and 180 (+ or -)
    • Distance

    Thanks!

  • Games

    Yes - relative to it if it moves.

  • Aphrodite - thanks, yes that looks like it could work. I'll give that a go.

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  • That totally worked - thanks

  • Hello Boomlet,

    I'm working on a project where I'm faced with exactly your issue. If you'd be so kind, could you share your .capx?

    I'm not quite understanding how you made the variable expressions.

    Thanks!

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