electrodynamics/src/main/scala/resonantinduction/mechanical/mech/grid/MechanicalGrid.scala
2014-11-20 12:41:40 +08:00

106 lines
2.8 KiB
Scala

package resonantinduction.mechanical.mech.grid
import resonant.api.grid.IUpdate
import resonant.lib.grid.{GridNode, UpdateTicker}
import scala.collection.convert.wrapAll._
import scala.collection.mutable
/**
* A grid that manages the mechanical objects
* @author Calclavia
*/
class MechanicalGrid extends GridNode[NodeMechanical](classOf[NodeMechanical]) with IUpdate
{
/**
* A map marking out the relative spin directions of each node.
* Updated upon recache
*/
val spinMap = mutable.WeakHashMap.empty[NodeMechanical, Boolean]
private var load = 0D
/**
* Rebuild the node list starting from the first node and recursively iterating through its connections.
*/
override def reconstruct(first: NodeMechanical)
{
super.reconstruct(first)
UpdateTicker.threaded.addUpdater(this)
load = getNodes.map(n => n.getLoad).foldLeft(0D)(_ + _)
}
override protected def populateNode(node: NodeMechanical, prev: NodeMechanical)
{
super.populateNode(node, prev)
//TODO: Check if gears are LOCKED (when two nodes obtain undesirable spins)
val dir = if (prev != null) if (node.inverseRotation(prev)) !spinMap(prev) else spinMap(prev) else false
spinMap += (node -> dir)
//Set mechanical node's initial angle
if (prev != null)
node.prevAngle = (prev.prevAngle + prev.angleDisplacement) % (2 * Math.PI)
}
override def update(deltaTime: Double)
{
getNodes synchronized
{
getNodes.foreach(
n =>
{
n.prevTorque = n.torque
n.prevAngularVelocity = n.angularVelocity
n._torque = 0
n._angularVelocity = 0
}
)
getNodes.filter(n => n.bufferTorque != 0 && n.bufferAngularVelocity != 0).foreach(n => recurse(deltaTime, Seq(n)))
getNodes.foreach(
n =>
{
if (n.prevTorque != n.torque)
n.onTorqueChanged()
if (n.prevAngularVelocity != n.angularVelocity)
n.onVelocityChanged()
}
)
}
}
def recurse(deltaTime: Double, passed: Seq[NodeMechanical])
{
val curr = passed(passed.size - 1)
if (passed.size > 1)
{
val prev = passed(passed.size - 2)
val ratio = curr.radius / prev.radius
val invert = if (curr.inverseRotation(prev)) -1 else 1
curr._torque += prev.torque * ratio * invert
curr._angularVelocity += prev.angularVelocity / ratio * invert
}
else
{
curr._torque += curr.bufferTorque
curr._angularVelocity += curr.bufferAngularVelocity * deltaTime
curr.bufferTorque = 0
curr.bufferAngularVelocity = 0
}
if (curr.power > 0)
curr.connections.filter(!passed.contains(_)).foreach(c => recurse(deltaTime, passed :+ c))
}
override def continueUpdate = getNodes.size > 0
override def canUpdate = getNodes.size > 0
}