META-INF.resources.scripts.canvas-battement.js Maven / Gradle / Ivy

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export default function(params) {
  var canvas = params.canvas;

  var ctx = canvas.getContext("2d");

  var px = 0, opx = 0, speed = 2;
  var arr = [1,2,3,2];
  var go = [];
  var blimp = 0;

  var larg, haut;
  var go_height, go_width;

  resize();

  var state_machine = null;

  loop();

  function y(x) {
    if (go.length == 0) {
        return 0;
    } else {
      var ret = 0;
      for (var i = 0; i < go.length; i++) {
          if (go[i].px<=x && x canvas.width) {
      zero();
    }

    requestAnimationFrame(loop);
  }
  function zero(event) { 
    px = opx = 0;
    go = [];
    blimp = 0;
  };
  function bump(event) { 
    go.push({px:px,amplitude:1});
  };
  function bump_now(amplitude) { 
    go.push({px:px,amplitude:amplitude});
  };
  function controller(action) { 
    if (action==='start') {
      state_machine = 'running';
    } else if (action==='stop') {
      state_machine = null;
      zero();
    } else if (action==='pause') {
      if (state_machine == 'paused') {
        state_machine = 'running';
      } else if (state_machine == 'running') {
        state_machine = 'paused';
      } else {
        // noop
      }
     }
  };
  return {
    bump: bump,
    bump_now: bump_now,
    controller: controller,
  };
}