<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE bulletml SYSTEM "bulletml.dtd">
<bulletml>
  <action label="top">
    <fire>
      <bullet>
        <direction type="aim">0</direction>
        <speed>5</speed>
        <actionRef label="sinus">
          <param>10</param>
        </actionRef>
      </bullet>
    </fire>
  </action>

  <action label="sinus">
    <action>
      <changeDirection>
          <direction type="relative">-90</direction>
          <term>0</term>
        </changeDirection>
    </action>
    <repeat>
      <times>0</times>
      <action>
        <changeDirection>
          <direction type="relative">180</direction>
          <term>$1</term>
        </changeDirection>
        <wait>$1</wait>
        <changeDirection>
          <direction type="relative">-180</direction>
          <term>$1</term>
        </changeDirection>
        <wait>$1</wait>
      </action>
    </repeat>
  </action>
</bulletml>
Add a sine wave pattern, it should be useful for a boss.
Add a sine wave pattern, it should be useful for a boss.
