UpdateTicker now supports custom update rates

src/main/scala/edx/core/prefab/node/NodeFluidPressure.scala

@@ -139,8 +139,6 @@ class NodeFluidPressure(parent: INodeProvider, volume: Int = FluidContainerRegis
     }
   }
 
-  def pressure(direction: ForgeDirection): Int = _pressure
-
   protected def updatePressure()
   {
     var totalPressure = 0
@@ -178,6 +176,8 @@ class NodeFluidPressure(parent: INodeProvider, volume: Int = FluidContainerRegis
     }
   }
 
+  def pressure(direction: ForgeDirection): Int = _pressure
+
   def pressure: Int = _pressure
 
   def pressure_=(pressure: Int)
@@ -185,7 +185,6 @@ class NodeFluidPressure(parent: INodeProvider, volume: Int = FluidContainerRegis
     this._pressure = pressure
   }
 
-  def canUpdate = !isInvalid && world != null
+  override def updateRate: Int = if (!isInvalid) 20 else 0
 
-  def continueUpdate = !isInvalid
 }

src/main/scala/edx/electrical/generator/TileMotor.scala

@@ -90,7 +90,7 @@ class TileMotor extends SpatialTile(Material.iron) with TElectric with TSpatialN
       //Produce mechanical energy
       val mechRatio = Math.pow(10, gearRatio)
       val power = dcNode.power
-      val negate = if (dcNode.potentialDifference > 0) 1 else -1
+      val negate = if (dcNode.voltage > 0) 1 else -1
       mechNode.rotate(negate * power * mechRatio, negate * power / mechRatio)
       //TODO: Resist DC energy
     }

src/main/scala/edx/electrical/multimeter/MultimeterGrid.scala

@@ -89,8 +89,11 @@ class MultimeterGrid extends Grid[PartMultimeter](classOf[PartMultimeter]) with
 
   def update(delta: Double)
   {
-    graphs.foreach(_.doneQueue())
-    doUpdate = false
+    if (doUpdate)
+    {
+      graphs.foreach(_.doneQueue())
+      doUpdate = false
+    }
   }
 
   def markUpdate
@@ -98,15 +101,7 @@ class MultimeterGrid extends Grid[PartMultimeter](classOf[PartMultimeter]) with
     doUpdate = true
   }
 
-  def canUpdate: Boolean =
-  {
-    return doUpdate && continueUpdate
-  }
-
-  def continueUpdate: Boolean =
-  {
-    return getNodes.size > 0
-  }
+  override def updateRate: Int = if (getNodes.size > 0) 20 else 0
 
   override def isValidNode(node: AnyRef): Boolean =
   {

src/main/scala/edx/mechanical/mech/grid/MechanicalGrid.scala

@@ -148,7 +148,5 @@ class MechanicalGrid extends GridNode[NodeMechanical](classOf[NodeMechanical]) w
     }
   }
 
-  override def continueUpdate = getNodes.size > 0 && !dead
-
-  override def canUpdate = getNodes.size > 0
+  override def updateRate: Int = if (getNodes.size > 0 && !dead) 20 else 0
 }