Fix #106: Extractor limits are for the entire inventory, not per slot (#124)

Author: Technici4n

src/main/java/dev/technici4n/moderndynamics/network/TickHelper.java

@@ -22,7 +22,8 @@
 import java.util.List;
 
 public class TickHelper {
-    private static long tickCounter = 0;
+    // Start counter way above 0 so that newly placed pipes (with a last tick of 0) always do work on their first tick.
+    private static long tickCounter = 1000;
     private static List<Runnable> delayedActions = new ArrayList<>();
     private static List<Runnable> delayedActions2 = new ArrayList<>();
 

src/main/java/dev/technici4n/moderndynamics/network/item/ItemHost.java

@@ -278,7 +278,7 @@ public void tickAttractor(Direction side, ItemAttachedIo attractor) {
     private int move(IItemHandler from, IItemHandler to, Predicate<ItemVariant> predicate, int maxAmount) {
         var moved = 0;
         for (int i = 0; i < from.getSlots(); i++) {
-            var extracted = from.extractItem(i, maxAmount, true);
+            var extracted = from.extractItem(i, maxAmount - moved, true);
             if (!extracted.isEmpty()) {
                 var variant = ItemVariant.of(extracted);
                 if (predicate.test(variant)) {

src/main/java/dev/technici4n/moderndynamics/test/ItemTransferTest.java

@@ -19,8 +19,10 @@
 package dev.technici4n.moderndynamics.test;
 
 import dev.technici4n.moderndynamics.init.MdBlocks;
+import dev.technici4n.moderndynamics.init.MdItems;
 import dev.technici4n.moderndynamics.test.framework.MdGameTestHelper;
 import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.Items;
 import net.minecraft.world.level.block.Blocks;
@@ -55,4 +57,38 @@ public void testHopperInsertingDamagedItem(MdGameTestHelper helper) {
                 })
                 .thenSucceed();
     }
+
+    @MdGameTest
+    public void testExtractorLimitIsForEntireInventory(MdGameTestHelper helper) {
+        var sourceChest = new BlockPos(0, 1, 0);
+        helper.setBlock(sourceChest, Blocks.CHEST.defaultBlockState());
+        var chest = (ChestBlockEntity) helper.getBlockEntity(sourceChest);
+
+        helper.pipe(new BlockPos(1, 1, 0), MdBlocks.ITEM_PIPE)
+                .attachment(Direction.WEST, MdItems.EXTRACTOR)
+                .configureItemIo(Direction.WEST, io -> {
+                    io.setMaxItemsExtracted(2);
+                });
+
+        var targetChest = new BlockPos(2, 1, 0);
+        helper.setBlock(targetChest, Blocks.CHEST.defaultBlockState());
+
+        for (int i = 0; i < 9; ++i) {
+            chest.setItem(i, new ItemStack(Items.DIAMOND, 7));
+        }
+
+        helper.startSequence()
+                .thenIdle(1)
+                .thenExecute(() -> {
+                    if (!ItemStack.matches(new ItemStack(Items.DIAMOND, 5), chest.getItem(0))) {
+                        helper.fail("Expected 6 diamonds in slot 0", targetChest);
+                    }
+                    for (int i = 1; i < 9; ++i) {
+                        if (!ItemStack.matches(new ItemStack(Items.DIAMOND, 7), chest.getItem(i))) {
+                            helper.fail("Expected 16 diamonds in slot " + i, targetChest);
+                        }
+                    }
+                })
+                .thenSucceed();
+    }
 }