Jump to content

Draw a zigzag line


Recommended Posts

Hi all,


I started to learn Phaser in one week, and realize that Phaser is interesting framework. So I decide to dive deep into the sea and having a question: 

How can I draw a random zigzag line along with side scrolling?

Please let me know, if you have an answer, thank you.

Link to comment
Share on other sites

I don't know if you can draw lots of graphics for each frame and still keep 60fps. So if you want to draw a zig zag line as a background effect, then maybe it's faster and better performance to create a bitmap .PNG file and use that.
But strictly answering your question; you can use the graphics() class from Pixi.JS, so something like this:
    var zigstep = 30;    // initialise line    var grph = game.add.graphics(0, 0);    grph.lineStyle(1, 0xFFFFFF, 1.0); // width=1, alpha=1.0    grph.moveTo(0, 300);    // draw zigzag line horizontally    for (var x=0; x<800; x=x+zigstep) {        // alternate between y=300 and x=360        var y = 300;        if ((x % (2*zigstep)) == 0) {y = 360};        // draw part of the zig zag line        grph.lineTo(x, y);    }; 


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...