Moved this over from FM

src/dark/api/energy/IForceDevice.java

@@ -0,0 +1,35 @@
+package dark.api.energy;
+
+import net.minecraftforge.common.ForgeDirection;
+import dark.api.parts.ITileConnector;
+
+/** Think of this in the same way as an electrical device from UE. getforce methods are designed to
+ * get the idea amount of force that a side should be outputting at the time. Apply force is the
+ * input for force for the tile, and should return the actually force the machine is using. Supply
+ * is when the code asks for your tile to output force on the side, just return the force value
+ * don't try to apply the force to other machines.
+ * 
+ * Tip Supply should never equal load as everything will stop moving since your need more force to
+ * move an object than it creates as a load, 100Power - 100Load = 0Force/0Movement. The supply of
+ * force should be greater than the load required to do the work
+ * 
+ * @author DarkGuardsman */
+public interface IForceDevice extends ITileConnector
+{
+    /** Applies force to this tile
+     * 
+     * @param side - side its coming from
+     * @param force - amount of force
+     * @return amount of force actually loaded down */
+    public float applyForce(ForgeDirection side, float force);
+
+    /** @param side - side that force should be supplied in
+     * @return force to apply in direction */
+    public float supplyForce(ForgeDirection side);
+
+    /** Idea force to output on the given side. */
+    public float getForceOut(ForgeDirection side);
+
+    /** Idea force to load down on the given side */
+    public float getForceLoad(ForgeDirection side);
+}