ec130/Models/Wakes/particles.xml

<?xml version="1.0" encoding="UTF-8"?>

<PropertyList>

  <particlesystem>

    <name>dirt</name>
    <texture>smoke.png</texture>
    <emissive>false</emissive>
    <lighting>false</lighting>

    <offsets>
      <x-m> 0 </x-m>
      <y-m> 0 </y-m>
      <z-m> 0 </z-m>
      <roll-deg> 90 </roll-deg>
    </offsets>

    <attach>world</attach>

    <align>billboard</align>

    <placer>
      <type>point</type>
    </placer>

    <condition>
      <greater-than>
        <property>/rotors/main/wakevisible</property>
        <value>0</value>
      </greater-than>
      <not>
        <property>/sim/paused</property>
      </not>
      <not>
        <property>/sim/crashed</property>
      </not>
      <greater-than>
        <property>rotors/main/rpm</property>
        <value> 270 </value>
      </greater-than>
<!--
      <greater-than>
        <property>/controls/engines/engine/throttle</property>
        <value> 0.7 </value>
      </greater-than>
-->
      <less-than>
        <property>sim/multiplay/generic/float[4]</property>
        <value>23</value>
      </less-than>
      <!-- only if sun is above horizon -->
      <less-than>
        <property>/sim/time/sun-angle-rad</property>
        <value>1.57</value>
      </less-than>
      <!-- only over water -->
      <not>
        <property>sim/multiplay/generic/int[0]</property>
      </not>
    </condition>

    <shooter>
      <theta-min-deg>   0 </theta-min-deg>
      <theta-max-deg> 360 </theta-max-deg>
      <phi-min-deg> -0.1 </phi-min-deg>
      <phi-max-deg>  0.1 </phi-max-deg>
      <speed-mps>
        <property>rotors/main/rpm</property>
        <factor> 0.1 </factor>
        <spread> 2.0 </spread>
      </speed-mps>
      <rotation-speed>
        <x-min-deg-sec> 0 </x-min-deg-sec>
        <y-min-deg-sec> 0 </y-min-deg-sec>
        <z-min-deg-sec> 0 </z-min-deg-sec>
        <x-max-deg-sec> 0 </x-max-deg-sec>
        <y-max-deg-sec> 0 </y-max-deg-sec>
        <z-max-deg-sec> 0 </z-max-deg-sec>
      </rotation-speed>
    </shooter>

    <counter>
      <particles-per-sec>
        <property>sim/multiplay/generic/float[4]</property>
        <factor> -13 </factor>
        <offset-m> 2000 </offset-m>
      </particles-per-sec>
    </counter>

    <particle>
      <start>
        <color>
          <red><value>   0.4 </value></red>
          <green><value> 0.4 </value></green>
          <blue><value>  0.4</value></blue>
          <alpha>
            <property>rotors/main/rpm</property>
            <factor> 0.0009 </factor>
            <max> 0.4 </max>
          </alpha>
        </color>
        <size>
          <value> 0.1 </value>
        </size>
      </start>

      <end>
        <color>
          <red><value>   0.8 </value></red>
          <green><value> 0.8 </value></green>
          <blue><value>  0.8 </value></blue>
          <alpha>
            <property>rotors/main/rpm</property>
            <factor> 0.00016 </factor>
            <max> 0.7 </max>
          </alpha>
        </color>
        <size>
          <value> 0.3 </value>
        </size>
      </end>

      <life-sec>
        <value>0.35</value>
      </life-sec>

      <mass-kg>0.01</mass-kg>
      <radius-m>0.01</radius-m>
    </particle>

    <program>
      <fluid>water</fluid>
      <gravity>true</gravity>
      <wind>false</wind>
    </program>

  </particlesystem>

  <animation>
    <type>rotate</type>
    <object-name>dirt</object-name>
    <property>sim/multiplay/generic/float[1]</property>
    <axis>
      <x>  0 </x>
      <y> -1 </y>
      <z>  0 </z>
    </axis>
  </animation>

  <animation>
    <type>rotate</type>
    <object-name>dirt</object-name>
    <property>sim/multiplay/generic/float[2]</property>
    <axis>
      <x> 1 </x>
      <y> 0 </y>
      <z> 0 </z>
    </axis>
  </animation>

  <animation>
    <type>translate</type>
    <object-name>dirt</object-name>
    <property>sim/multiplay/generic/float[4]</property>
    <axis>
      <x>  0 </x>
      <y>  0 </y>
      <z> -1 </z>
    </axis>
  </animation>

</PropertyList>