fgdata/Models/Airport/Pushback/Forklift.xml

<?xml version="1.0"?>
<PropertyList>
  <path>Forklift.ac</path>

  <!-- Trucks models and artworks courtesy of XPGoodWay Team
(http://www.xpgoodwayteam.org/site_xpushback/) -->

 <!-- switch to night/day textures -->

 <animation>
   <type>textranslate</type>
   <property>/sim/time/sun-angle-rad</property>
   <step>1.60</step>
   <factor>0.318471338</factor>
   <center>
     <x-m>0</x-m>
     <y-m>0</y-m>
     <z-m>0</z-m>
   </center>
   <axis>
     <x>-1</x>
     <y>0</y>
     <z>0</z>
   </axis>
 </animation>

 <animation>
   <type>material</type>
   <condition>		
     <greater-than>		
       <property>/sim/time/sun-angle-rad</property>
       <value>1.60</value>
     </greater-than>
   </condition>
   <emission>	
     <red>1</red>	
     <green>1</green>	
     <blue>1</blue>
   </emission>
 </animation>

 <animation>
   <type>material</type>
   <condition>		
     <less-than-equals>		
       <property>/sim/time/sun-angle-rad</property>
       <value>1.60</value>
     </less-than-equals>
   </condition>
   <emission>	
     <red>0</red>	
     <green>0</green>	
     <blue>0</blue>
   </emission>
 </animation>

 <animation>
   <type>select</type>
   <condition>
     <property>sim/model/pushback/enabled</property>
     <property>gear/gear[0]/wow</property>
   </condition>
 </animation>

 <animation>
   <type>rotate</type>
   <condition>
     <greater-than>
       <property>sim/model/pushback/position-norm</property>
       <value>0.99</value>
     </greater-than>
   </condition>
   <property>gear/gear[0]/steering-norm</property>
   <factor>-70</factor>
   <center>
     <x-m>0</x-m>
     <y-m>0</y-m>
     <z-m>0</z-m>
   </center>
   <axis>
     <x>0</x>
     <y>0</y>
     <z>1</z>
   </axis>
 </animation>

  <!-- change heading of the pushback when driving the arc -->
  <animation>
    <type>rotate</type>
    <property>sim/model/pushback/position-norm</property>
    <factor>-90</factor>
    <offset-deg>90</offset-deg>
    <center>
      <x-m>0</x-m>
      <y-m>0</y-m>
      <z-m>0</z-m>
    </center>
    <axis>
      <x>0</x>
      <y>0</y>
      <z>1</z>
    </axis>
  </animation>

  <!-- compensate for gear compression -->
  <animation>
    <type>translate</type>
    <property>gear/gear[0]/compression-ft</property>
    <factor>0.3048</factor>
    <axis>
      <x>0</x>
      <y>0</y>
      <z>1</z>
    </axis>
  </animation>

  <!-- precalculated sin and asin to move the pushback on a 90deg arc, 25m radius -->
  <animation>
    <type>translate</type>
    <property>sim/model/pushback/position-norm</property>
    <interpolation>
      <entry><ind>1.000000</ind><dep>0.000000</dep></entry>
      <entry><ind>0.950000</ind><dep>1.961477</dep></entry>
      <entry><ind>0.900000</ind><dep>3.910862</dep></entry>
      <entry><ind>0.850000</ind><dep>5.836134</dep></entry>
      <entry><ind>0.800000</ind><dep>7.725425</dep></entry>
      <entry><ind>0.750000</ind><dep>9.567086</dep></entry>
      <entry><ind>0.700000</ind><dep>11.349763</dep></entry>
      <entry><ind>0.650000</ind><dep>13.062464</dep></entry>
      <entry><ind>0.600000</ind><dep>14.694631</dep></entry>
      <entry><ind>0.550000</ind><dep>16.236201</dep></entry>
      <entry><ind>0.500000</ind><dep>17.677670</dep></entry>
      <entry><ind>0.450000</ind><dep>19.010149</dep></entry>
      <entry><ind>0.400000</ind><dep>20.225425</dep></entry>
      <entry><ind>0.350000</ind><dep>21.316004</dep></entry>
      <entry><ind>0.300000</ind><dep>22.275163</dep></entry>
      <entry><ind>0.250000</ind><dep>23.096988</dep></entry>
      <entry><ind>0.200000</ind><dep>23.776413</dep></entry>
      <entry><ind>0.150000</ind><dep>24.309248</dep></entry>
      <entry><ind>0.100000</ind><dep>24.692209</dep></entry>
      <entry><ind>0.050000</ind><dep>24.922933</dep></entry>
      <entry><ind>0.000000</ind><dep>25.000000</dep></entry>
    </interpolation>
    <axis>
      <x>-1</x>
      <y>0</y>
      <z>0</z>
    </axis>
  </animation>
    <animation>
     <type>translate</type>
     <property>sim/model/pushback/position-norm</property>
     <interpolation>
     <entry><ind>1.000000</ind><dep>0.000000</dep></entry>
     <entry><ind>0.950000</ind><dep>0.077067</dep></entry>
     <entry><ind>0.900000</ind><dep>0.307791</dep></entry>
     <entry><ind>0.850000</ind><dep>0.690752</dep></entry>
     <entry><ind>0.800000</ind><dep>1.223587</dep></entry>
     <entry><ind>0.750000</ind><dep>1.903012</dep></entry>
     <entry><ind>0.700000</ind><dep>2.724837</dep></entry>
     <entry><ind>0.650000</ind><dep>3.683996</dep></entry>
     <entry><ind>0.600000</ind><dep>4.774575</dep></entry>
     <entry><ind>0.550000</ind><dep>5.989851</dep></entry>
     <entry><ind>0.500000</ind><dep>7.322330</dep></entry>
     <entry><ind>0.450000</ind><dep>8.763799</dep></entry>
     <entry><ind>0.400000</ind><dep>10.305369</dep></entry>
     <entry><ind>0.350000</ind><dep>11.937536</dep></entry>
     <entry><ind>0.300000</ind><dep>13.650238</dep></entry>
     <entry><ind>0.250000</ind><dep>15.432914</dep></entry>
     <entry><ind>0.200000</ind><dep>17.274575</dep></entry>
     <entry><ind>0.150000</ind><dep>19.163866</dep></entry>
     <entry><ind>0.100000</ind><dep>21.089138</dep></entry>
     <entry><ind>0.050000</ind><dep>23.038523</dep></entry>
     <entry><ind>0.000000</ind><dep>25.000000</dep></entry>
     </interpolation>
     <axis>
       <x>0</x>
       <y>-1</y>
       <z>0</z>
     </axis>
   </animation>
    <!-- compensate for pitch of aircraft, keep pushback level -->
   <animation>
     <type>rotate</type>
     <property>orientation/pitch-deg</property>
     <factor>-1</factor>
     <center>
       <x-m>0</x-m>
       <y-m>0</y-m>
       <z-m>0</z-m>
     </center>
     <axis>
       <x>0</x>
       <y>1</y>
       <z>0</z>
     </axis>
   </animation>
  </PropertyList>