Tweak NetworkStackDispatcher behavior on incomplete insertions

src/main/kotlin/net/shadowfacts/phycon/block/terminal/AbstractTerminalBlockEntity.kt

@@ -225,7 +225,8 @@ abstract class AbstractTerminalBlockEntity(type: BlockEntityType<*>, pos: BlockP
 		// as with extracting, we "know" the new amounts and so can update instantly without actually sending out packets
 		updateAndSync()
 
-		return remaining
+		// don't start a second insertion, since remaining will be dispatched at the next beginInsertions
+		return ItemStack.EMPTY
 	}
 
 	override fun onInventoryChanged(inv: Inventory) {

src/main/kotlin/net/shadowfacts/phycon/component/NetworkStackDispatcher.kt

@@ -36,7 +36,9 @@ interface NetworkStackDispatcher<Insertion: NetworkStackDispatcher.PendingInsert
 			insertion.results.add(packet.capacity to packet.stackReceiver)
 			if (insertion.isFinishable(this)) {
 				val remaining = finishInsertion(insertion)
-				// todo: do something with remaining
+				if (!remaining.isEmpty) {
+					pendingInsertions.add(createPendingInsertion(remaining))
+				}
 			}
 		}
 	}
@@ -56,12 +58,13 @@ interface NetworkStackDispatcher<Insertion: NetworkStackDispatcher.PendingInsert
 		// copy the insertion stack so subclasses that override this method can still see the originally dispatched stack after the super call
 		val remaining = insertion.stack.copy()
 		while (!remaining.isEmpty && sortedResults.isNotEmpty()) {
-			val (capacity, receivingInterface) = sortedResults.removeFirst()
+			val (capacity, receiver) = sortedResults.removeFirst()
 			if (capacity <= 0) continue
-			val copy = remaining.copyWithCount(min(capacity, remaining.count))
-			sendPacket(ItemStackPacket(copy, ipAddress, receivingInterface.ipAddress))
+			val sentCount = min(capacity, remaining.count)
+			val copy = remaining.copyWithCount(sentCount)
+			sendPacket(ItemStackPacket(copy, ipAddress, receiver.ipAddress))
 			// todo: the destination should confirm how much was actually inserted, in case of race condition
-			remaining.count -= capacity
+			remaining.count -= sentCount
 		}
 
 		return remaining
@@ -89,7 +92,11 @@ fun <Self, Insertion: NetworkStackDispatcher.PendingInsertion<Insertion>> Self.f
 
 	val finishable = pendingInsertions.filter { it.isFinishable(this) }
 	// finishInsertion removes the object from pendingInsertions
-	finishable.forEach(::finishInsertion)
-	// todo: do something with remaining?
+	for (insertion in finishable) {
+		val remaining = finishInsertion(insertion)
+		if (!remaining.isEmpty) {
+			pendingInsertions.add(createPendingInsertion(remaining))
+		}
+	}
 	// todo: if a timed-out insertion can't be finished, we should probably retry after some time (exponential backoff?)
 }