Tree Growth Simulator can now harvest leaves and fruits, using appropriate tools. (#839)

* TGS logic rework and new outputs

* TGS logic rework and new outputs

* NEI frontend.

* NEI frontend part 2

* Recover saws from controller slot to input bus.

* Added documentation and removed unused stuff.

* Recipes for non-Forestry trees.

* Updated tooltip.

* Better handling of saws in controller slot from previous versions + grafter support.

* Added Forestry and Extra Trees trees registration and processing.

* BS + deps.

* Disable ME stocking bus to fix an exploit.

* Fixes based on feedback.

---------

Co-authored-by: Martin Robertz <dream-master@gmx.net>

6 files changed, 1307 insertions, 494 deletions

diff --git a/src/main/java/gtPlusPlus/xmod/forestry/HANDLER_FR.java b/src/main/java/gtPlusPlus/xmod/forestry/HANDLER_FR.java
index 80d1620f02..a1b96d0f2f 100644
--- a/src/main/java/gtPlusPlus/xmod/forestry/HANDLER_FR.java
+++ b/src/main/java/gtPlusPlus/xmod/forestry/HANDLER_FR.java
@@ -1,22 +1,10 @@
 package gtPlusPlus.xmod.forestry;
 
-import static gregtech.api.enums.Mods.ExtraTrees;
 import static gregtech.api.enums.Mods.Forestry;
 
-import net.minecraft.item.ItemStack;
-
-import binnie.extratrees.genetics.ExtraTreeSpecies;
-import cpw.mods.fml.common.Optional;
-import forestry.api.arboriculture.EnumGermlingType;
-import forestry.api.arboriculture.EnumWoodType;
-import forestry.api.arboriculture.TreeManager;
-import forestry.arboriculture.genetics.TreeDefinition;
-import gregtech.api.enums.Mods;
-import gtPlusPlus.core.util.reflect.ReflectionUtils;
 import gtPlusPlus.xmod.forestry.bees.items.FR_ItemRegistry;
 import gtPlusPlus.xmod.forestry.bees.recipe.FR_Gregtech_Recipes;
 import gtPlusPlus.xmod.forestry.bees.registry.GTPP_Bees;
-import gtPlusPlus.xmod.gregtech.common.tileentities.machines.multi.production.GregtechMetaTileEntityTreeFarm;
 
 public class HANDLER_FR {
 
@@ -30,51 +18,6 @@ public class HANDLER_FR {
         if (Forestry.isModLoaded()) {
             FR_Gregtech_Recipes.registerItems();
             new GTPP_Bees();
-            mapForestrySaplingToLog();
-        }
-
-        if (ExtraTrees.isModLoaded()) {
-            mapExtraTreesSaplingToLog();
-        }
-    }
-
-    @Optional.Method(modid = Mods.Names.FORESTRY)
-    private static void mapForestrySaplingToLog() {
-        for (TreeDefinition value : TreeDefinition.values()) {
-            ItemStack aSaplingStack = value.getMemberStack(EnumGermlingType.SAPLING);
-            EnumWoodType woodType = ReflectionUtils.getField(value, "woodType");
-            ItemStack aLog;
-            if (woodType != null) {
-                aLog = TreeManager.woodItemAccess.getLog(woodType, false);
-
-                GregtechMetaTileEntityTreeFarm.sLogCache.put(value.getUID(), aLog);
-                GregtechMetaTileEntityTreeFarm.sLogCache
-                        .put(value.getUID() + "fireproof", TreeManager.woodItemAccess.getLog(woodType, true));
-            } else {
-                aLog = ReflectionUtils.getField(value, "vanillaWood");
-
-                GregtechMetaTileEntityTreeFarm.sLogCache
-                        .put(value.getUID(), ReflectionUtils.getField(value, "vanillaWood"));
-            }
-
-            GregtechMetaTileEntityTreeFarm.addFakeRecipeToNEI(aSaplingStack, aLog);
-        }
-    }
-
-    @Optional.Method(modid = Mods.Names.EXTRA_TREES)
-    private static void mapExtraTreesSaplingToLog() {
-        for (ExtraTreeSpecies value : ExtraTreeSpecies.values()) {
-            ItemStack aSaplingStack = TreeManager.treeRoot
-                    .getMemberStack(TreeManager.treeRoot.templateAsIndividual(value.getTemplate()), 0);
-            ItemStack aLog = null;
-            if (value.getLog() != null) {
-                aLog = value.getLog().getItemStack();
-
-                GregtechMetaTileEntityTreeFarm.sLogCache.put(value.getUID(), aLog);
-                GregtechMetaTileEntityTreeFarm.sLogCache.put(value.getUID() + "fireproof", aLog);
-            }
-
-            GregtechMetaTileEntityTreeFarm.addFakeRecipeToNEI(aSaplingStack, aLog);
         }
     }
 }
diff --git a/src/main/java/gtPlusPlus/xmod/gregtech/HANDLER_GT.java b/src/main/java/gtPlusPlus/xmod/gregtech/HANDLER_GT.java
index 91dd851f84..e95baf43df 100644
--- a/src/main/java/gtPlusPlus/xmod/gregtech/HANDLER_GT.java
+++ b/src/main/java/gtPlusPlus/xmod/gregtech/HANDLER_GT.java
@@ -25,6 +25,7 @@ import gtPlusPlus.xmod.gregtech.loaders.ProcessingElectricSnips;
 import gtPlusPlus.xmod.gregtech.loaders.misc.AddCustomMachineToPA;
 import gtPlusPlus.xmod.gregtech.loaders.recipe.RecipeLoader_AlgaeFarm;
 import gtPlusPlus.xmod.gregtech.loaders.recipe.RecipeLoader_MolecularTransformer;
+import gtPlusPlus.xmod.gregtech.loaders.recipe.RecipeLoader_TreeFarm;
 import gtPlusPlus.xmod.gregtech.registration.gregtech.GregtechConduits;
 
 public class HANDLER_GT {
@@ -89,6 +90,7 @@ public class HANDLER_GT {
         CokeAndPyrolyseOven.onLoadComplete();
         Meta_GT_Proxy.fixIC2FluidNames();
         RecipeLoader_AlgaeFarm.generateRecipes();
+        RecipeLoader_TreeFarm.generateRecipes();
         if (AdvancedSolarPanel.isModLoaded()) {
             RecipeLoader_MolecularTransformer.run();
         }
diff --git a/src/main/java/gtPlusPlus/xmod/gregtech/common/helpers/TreeFarmHelper.java b/src/main/java/gtPlusPlus/xmod/gregtech/common/helpers/TreeFarmHelper.java
deleted file mode 100644
index 7774a34dc1..0000000000
--- a/src/main/java/gtPlusPlus/xmod/gregtech/common/helpers/TreeFarmHelper.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package gtPlusPlus.xmod.gregtech.common.helpers;
-
-import net.minecraft.item.ItemStack;
-
-import gregtech.common.items.GT_MetaGenerated_Tool_01;
-
-public class TreeFarmHelper {
-
-    public static boolean isValidForGUI(final ItemStack aStack) {
-        return isCorrectMachinePart(aStack) != SAWTOOL.NONE;
-    }
-
-    public static SAWTOOL isCorrectMachinePart(final ItemStack aStack) {
-        if (aStack != null && aStack.getItem() instanceof GT_MetaGenerated_Tool_01) {
-            switch (aStack.getItemDamage()) {
-                case GT_MetaGenerated_Tool_01.SAW -> {
-                    return SAWTOOL.SAW;
-                }
-                case GT_MetaGenerated_Tool_01.BUZZSAW_LV, GT_MetaGenerated_Tool_01.BUZZSAW_MV, GT_MetaGenerated_Tool_01.BUZZSAW_HV -> {
-                    return SAWTOOL.BUZZSAW;
-                }
-                case GT_MetaGenerated_Tool_01.CHAINSAW_LV, GT_MetaGenerated_Tool_01.CHAINSAW_MV, GT_MetaGenerated_Tool_01.CHAINSAW_HV -> {
-                    return SAWTOOL.CHAINSAW;
-                }
-            }
-        }
-        return SAWTOOL.NONE;
-    }
-
-    public enum SAWTOOL {
-        NONE,
-        SAW,
-        BUZZSAW,
-        CHAINSAW
-    }
-
-}
diff --git a/src/main/java/gtPlusPlus/xmod/gregtech/common/tileentities/machines/multi/production/GregtechMetaTileEntityTreeFarm.java b/src/main/java/gtPlusPlus/xmod/gregtech/common/tileentities/machines/multi/production/GregtechMetaTileEntityTreeFarm.java
index 832c84833c..5ce6c2db45 100644
--- a/src/main/java/gtPlusPlus/xmod/gregtech/common/tileentities/machines/multi/production/GregtechMetaTileEntityTreeFarm.java
+++ b/src/main/java/gtPlusPlus/xmod/gregtech/common/tileentities/machines/multi/production/GregtechMetaTileEntityTreeFarm.java
@@ -10,89 +10,72 @@ import static gregtech.api.enums.GT_HatchElement.Maintenance;
 import static gregtech.api.enums.GT_HatchElement.Muffler;
 import static gregtech.api.enums.GT_HatchElement.OutputBus;
 import static gregtech.api.enums.GT_HatchElement.OutputHatch;
-import static gregtech.api.enums.Mods.BiomesOPlenty;
-import static gregtech.api.enums.Mods.ForbiddenMagic;
-import static gregtech.api.enums.Mods.GTPlusPlus;
-import static gregtech.api.enums.Mods.GalaxySpace;
-import static gregtech.api.enums.Mods.IndustrialCraft2;
-import static gregtech.api.enums.Mods.Natura;
-import static gregtech.api.enums.Mods.PamsHarvestCraft;
-import static gregtech.api.enums.Mods.PamsHarvestTheNether;
-import static gregtech.api.enums.Mods.TaintedMagic;
-import static gregtech.api.enums.Mods.Thaumcraft;
-import static gregtech.api.enums.Mods.ThaumicBases;
-import static gregtech.api.enums.Mods.TinkerConstruct;
-import static gregtech.api.enums.Mods.TwilightForest;
-import static gregtech.api.enums.Mods.Witchery;
 import static gregtech.api.util.GT_StructureUtility.buildHatchAdder;
+import static gregtech.api.util.GT_Utility.filterValidMTEs;
 import static gtPlusPlus.xmod.gregtech.api.metatileentity.implementations.base.GregtechMeta_MultiBlockBase.GTPPHatchElement.TTEnergy;
 
 import java.util.ArrayList;
+import java.util.EnumMap;
 import java.util.HashMap;
+import java.util.List;
 
 import javax.annotation.Nonnull;
 
-import net.minecraft.init.Blocks;
+import net.minecraft.init.Items;
 import net.minecraft.item.Item;
+import net.minecraft.item.ItemShears;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.fluids.FluidStack;
 
-import org.jetbrains.annotations.NotNull;
-
 import com.gtnewhorizon.structurelib.alignment.constructable.ISurvivalConstructable;
 import com.gtnewhorizon.structurelib.structure.IStructureDefinition;
 import com.gtnewhorizon.structurelib.structure.ISurvivalBuildEnvironment;
 import com.gtnewhorizon.structurelib.structure.StructureDefinition;
 
-import forestry.api.arboriculture.EnumTreeChromosome;
+import forestry.api.arboriculture.IToolGrafter;
 import forestry.api.arboriculture.ITree;
 import forestry.api.arboriculture.TreeManager;
-import forestry.api.genetics.IAlleleBoolean;
+import gregtech.api.enums.GT_Values;
+import gregtech.api.enums.Mods;
 import gregtech.api.enums.TAE;
 import gregtech.api.interfaces.IIconContainer;
 import gregtech.api.interfaces.metatileentity.IMetaTileEntity;
 import gregtech.api.interfaces.tileentity.IGregTechTileEntity;
 import gregtech.api.items.GT_MetaGenerated_Tool;
+import gregtech.api.logic.ProcessingLogic;
+import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_Hatch_InputBus;
 import gregtech.api.recipe.RecipeMap;
 import gregtech.api.recipe.check.CheckRecipeResult;
 import gregtech.api.recipe.check.CheckRecipeResultRegistry;
 import gregtech.api.recipe.check.SimpleCheckRecipeResult;
 import gregtech.api.util.GT_ModHandler;
 import gregtech.api.util.GT_Multiblock_Tooltip_Builder;
+import gregtech.api.util.GT_Recipe;
 import gregtech.api.util.GT_Utility;
 import gregtech.api.util.VoidProtectionHelper;
+import gregtech.common.items.GT_MetaGenerated_Tool_01;
+import gregtech.common.tileentities.machines.GT_MetaTileEntity_Hatch_InputBus_ME;
 import gtPlusPlus.api.objects.Logger;
 import gtPlusPlus.api.recipe.GTPPRecipeMaps;
 import gtPlusPlus.core.block.ModBlocks;
-import gtPlusPlus.core.item.ModItems;
 import gtPlusPlus.core.lib.CORE;
-import gtPlusPlus.core.util.math.MathUtils;
-import gtPlusPlus.core.util.minecraft.FluidUtils;
 import gtPlusPlus.core.util.minecraft.ItemUtils;
-import gtPlusPlus.core.util.minecraft.MaterialUtils;
 import gtPlusPlus.xmod.gregtech.api.metatileentity.implementations.base.GregtechMeta_MultiBlockBase;
 import gtPlusPlus.xmod.gregtech.common.blocks.textures.TexturesGtBlock;
-import gtPlusPlus.xmod.gregtech.common.helpers.TreeFarmHelper;
-import gtPlusPlus.xmod.gregtech.common.helpers.TreeFarmHelper.SAWTOOL;
+import gtPlusPlus.xmod.gregtech.common.items.MetaGeneratedGregtechTools;
 
 public class GregtechMetaTileEntityTreeFarm extends GregtechMeta_MultiBlockBase<GregtechMetaTileEntityTreeFarm>
         implements ISurvivalConstructable {
 
     public static int CASING_TEXTURE_ID;
-    public static String mCasingName = "Sterile Farm Casing";
-    public static HashMap<String, ItemStack> sLogCache = new HashMap<>();
     private static final int TICKS_PER_OPERATION = 100;
+    private static final int TOOL_DAMAGE_PER_OPERATION = 1;
+    private static final int TOOL_CHARGE_PER_OPERATION = 32;
 
     private int mCasing;
+    public static String mCasingName = "Sterile Farm Casing";
     private static IStructureDefinition<GregtechMetaTileEntityTreeFarm> STRUCTURE_DEFINITION = null;
 
-    private SAWTOOL mToolType;
-    private ItemStack mSapling;
-    private ItemStack mWood;
-    private float heightModifier = 1.0f;
-    private float saplingsModifier = 1.0f;
-    private int girthModifier = 1;
-
     public GregtechMetaTileEntityTreeFarm(final int aID, final String aName, final String aNameRegional) {
         super(aID, aName, aNameRegional);
         CASING_TEXTURE_ID = TAE.getIndexFromPage(1, 15);
@@ -116,20 +99,20 @@ public class GregtechMetaTileEntityTreeFarm extends GregtechMeta_MultiBlockBase<
     @Override
     protected GT_Multiblock_Tooltip_Builder createTooltip() {
         GT_Multiblock_Tooltip_Builder tt = new GT_Multiblock_Tooltip_Builder();
-        tt.addMachineType(getMachineType()).addInfo("Converts EU to Logs").addInfo("Eu Usage: 100% | Parallel: 1")
-                .addInfo("Requires a Saw or Chainsaw in GUI slot").addInfo("Output multiplier:").addInfo("Saw = 1x")
-                .addInfo("Buzzsaw = 2x").addInfo("Chainsaw = 4x")
-                .addInfo("Add a sapling in the input bus to select wood type output")
-                .addInfo("The sapling is not consumed").addInfo("Tools can also be fed to the controller via input bus")
-                .addInfo("The working speed is fixed for 5s")
-                .addInfo("Production Formula: (2 * tier^2 - 2 * tier + 5) * 5 * saw boost")
-                .addInfo("When fertilizer is supplied, produces saplings instead of logs")
-                .addInfo("Forestry saplings can get increased production")
+        tt.addMachineType(getMachineType()).addInfo("Controller block for the Tree Growth Simulator")
+                .addInfo("Farms and harvests trees using EU").addInfo("Place a sapling in the controller slot")
+                .addInfo("Place a tool in an input bus").addInfo("Different tools are required for different outputs")
+                .addInfo("Advanced tools multiply output amount")
+                .addInfo("  Logs: Saw (1x), Buzzsaw (2x), Chainsaw (4x)")
+                .addInfo("  Saplings: Branch Cutter (1x), Grafter (3x)")
+                .addInfo("  Leaves: Shears (1x), Wire Cutter (2x), Automatic Snips (4x)").addInfo("  Fruit: Knife (1x)")
+                .addInfo("Multiple tools can be used at the same time").addSeparator()
+                .addInfo("Work time is fixed at 5 seconds").addInfo("Energy input tier multiplies output further")
+                .addInfo("Output multiplier is equal to: 2*tier^2 - 2*tier + 5")
                 .addPollutionAmount(getPollutionPerSecond(null)).addSeparator().beginStructureBlock(3, 3, 3, true)
-                .addController("Front center").addCasingInfoMin("Sterile Farm Casing", 8, false)
-                .addInputBus("Any casing", 1).addOutputBus("Any casing", 1).addEnergyHatch("Any casing", 1)
-                .addMaintenanceHatch("Any casing", 1).addMufflerHatch("Any casing", 1)
-                .toolTipFinisher(CORE.GT_Tooltip_Builder.get());
+                .addController("Front center").addCasingInfoMin(mCasingName, 8, false).addInputBus("Any casing", 1)
+                .addOutputBus("Any casing", 1).addEnergyHatch("Any casing", 1).addMaintenanceHatch("Any casing", 1)
+                .addMufflerHatch("Any casing", 1).toolTipFinisher(CORE.GT_Tooltip_Builder.get());
         return tt;
     }
 
@@ -149,101 +132,58 @@ public class GregtechMetaTileEntityTreeFarm extends GregtechMeta_MultiBlockBase<
     }
 
     @Override
-    public boolean isCorrectMachinePart(final ItemStack aStack) {
-        // is correct part && either not powered tool or have enough power
-        if (TreeFarmHelper.isValidForGUI(aStack)
-                && GT_MetaGenerated_Tool.getToolDamage(aStack) < GT_MetaGenerated_Tool.getToolMaxDamage(aStack)) {
-            return GT_ModHandler.isElectricItem(aStack) ? GT_ModHandler.canUseElectricItem(aStack, 32) : true;
-        }
-        return false;
+    public boolean checkMachine(IGregTechTileEntity aBaseMetaTileEntity, ItemStack aStack) {
+        mCasing = 0;
+        return checkPiece(mName, 1, 1, 0) && mCasing >= 8 && checkHatch();
     }
 
-    /**
-     * Method used to get the boost based on the ordinal of the saw
-     * 
-     * @param sawType type of the saw
-     * @return an int corresponding to the boost
-     */
-    public int getSawBoost(SAWTOOL sawType) {
-        return switch (sawType) {
-            case SAW -> 1;
-            case BUZZSAW -> 2;
-            case CHAINSAW -> 4;
-            default -> 1;
-        };
+    @Override
+    public boolean checkHatch() {
+        // Tools from a stocking inout bus can not be damaged, this would cause an infinite durability exploit.
+        // Therefore disallow ME input bus.
+        if (!super.checkHatch()) return false;
+        for (GT_MetaTileEntity_Hatch_InputBus inputBus : mInputBusses) {
+            if (inputBus instanceof GT_MetaTileEntity_Hatch_InputBus_ME) {
+                return false;
+            }
+        }
+        return true;
     }
 
     @Override
-    public RecipeMap<?> getRecipeMap() {
-        // Only for visual
-        return GTPPRecipeMaps.treeGrowthSimulatorFakeRecipes;
+    public boolean supportsCraftingMEBuffer() {
+        return false;
     }
 
     @Override
-    public @NotNull CheckRecipeResult checkProcessing() {
-        final ItemStack controllerStack = getControllerSlot();
-        if (!isCorrectMachinePart(controllerStack) && !replaceTool())
-            return SimpleCheckRecipeResult.ofFailure("no_saw");
-        if (!checkSapling()) return SimpleCheckRecipeResult.ofFailure("no_sapling");
-
-        this.mToolType = TreeFarmHelper.isCorrectMachinePart(controllerStack);
-
-        long tVoltage = getMaxInputVoltage();
-        byte tTier = (byte) Math.max(1, GT_Utility.getTier(tVoltage));
-
-        int aOutputAmount = ((2 * (tTier * tTier)) - (2 * tTier) + 5) * (TICKS_PER_OPERATION / 20)
-                * getSawBoost(mToolType);
-        int aFert = hasLiquidFert();
-        ItemStack[] toOutput;
-
-        if (aFert > 0) { // Sapling
-            if (aFert < aOutputAmount) {
-                aOutputAmount /= 10;
-            }
-            int amplifiedOutputAmount = (int) (aOutputAmount * saplingsModifier);
-            toOutput = new ItemStack[] { ItemUtils.getSimpleStack(mSapling, amplifiedOutputAmount) };
-        } else { // Log
-            int amplifiedOutputAmount = (int) (aOutputAmount * heightModifier * girthModifier);
-            toOutput = new ItemStack[] { ItemUtils.getSimpleStack(mWood, amplifiedOutputAmount) };
-        }
-
-        VoidProtectionHelper voidProtection = new VoidProtectionHelper().setMachine(this).setItemOutputs(toOutput)
-                .build();
-
-        if (voidProtection.isItemFull()) {
-            return CheckRecipeResultRegistry.ITEM_OUTPUT_FULL;
-        }
-
-        if (aFert > 0 && aFert >= aOutputAmount) {
-            tryConsumeLiquidFert(aOutputAmount);
-        }
-
-        this.mOutputItems = toOutput;
-
-        this.mMaxProgresstime = TICKS_PER_OPERATION;
-        this.lEUt = MaterialUtils.getVoltageForTier(tTier);
+    public int getMaxParallelRecipes() {
+        return 1;
+    }
 
-        this.mEfficiency = (10000 - (getIdealStatus() - getRepairStatus()) * 1000);
-        this.mEfficiencyIncrease = 10000;
+    @Override
+    public boolean supportsBatchMode() {
+        // Batch mode would not do anything, processing time is fixed at 100 ticks.
+        return false;
+    }
 
-        if (this.lEUt > 0) {
-            this.lEUt = (-this.lEUt);
-        }
+    @Override
+    public boolean isBatchModeEnabled() {
+        return false;
+    }
 
-        this.tryDamageTool();
-        this.updateSlots();
-        return SimpleCheckRecipeResult.ofSuccess("growing_trees");
+    @Override
+    public int getMaxEfficiency(final ItemStack aStack) {
+        return 10000;
     }
 
     @Override
-    public boolean checkMachine(IGregTechTileEntity aBaseMetaTileEntity, ItemStack aStack) {
-        mCasing = 0;
-        return checkPiece(mName, 1, 1, 0) && mCasing >= 8 && checkHatch();
+    public int getPollutionPerSecond(final ItemStack aStack) {
+        return CORE.ConfigSwitches.pollutionPerSecondMultiTreeFarm;
     }
 
     @Override
-    public int getMaxParallelRecipes() {
-        return 1;
+    public boolean explodesOnComponentBreak(final ItemStack aStack) {
+        return false;
     }
 
     @Override
@@ -272,326 +212,574 @@ public class GregtechMetaTileEntityTreeFarm extends GregtechMeta_MultiBlockBase<
     }
 
     @Override
-    public int getMaxEfficiency(final ItemStack aStack) {
-        return 10000;
+    public void construct(ItemStack stackSize, boolean hintsOnly) {
+        buildPiece(mName, stackSize, hintsOnly, 1, 1, 0);
     }
 
     @Override
-    public int getPollutionPerSecond(final ItemStack aStack) {
-        return CORE.ConfigSwitches.pollutionPerSecondMultiTreeFarm;
+    public int survivalConstruct(ItemStack stackSize, int elementBudget, ISurvivalBuildEnvironment env) {
+        if (mMachine) return -1;
+        return survivialBuildPiece(mName, stackSize, 1, 1, 0, elementBudget, env, false, true);
     }
 
+    /* Processing logic. */
+
     @Override
-    public int getDamageToComponent(final ItemStack aStack) {
-        return MathUtils.balance((int) (75 - ((GT_MetaGenerated_Tool.getPrimaryMaterial(aStack).getMass()))), 5, 120);
+    public boolean isCorrectMachinePart(final ItemStack aStack) {
+        if (aStack == null) return false;
+        if (isValidSapling(aStack)) return true;
+        /*
+         * In previous versions, a saw used to go in the controller slot. We do not want an update to stop processing of
+         * a machine set up like this. Instead, a sapling is placed in this slot at the start of the next operation.
+         */
+        if (aStack.getItem() instanceof GT_MetaGenerated_Tool_01) return true;
+        return false;
     }
 
     @Override
-    public boolean explodesOnComponentBreak(final ItemStack aStack) {
-        return false;
+    public RecipeMap<?> getRecipeMap() {
+        // Only for NEI, not used in processing logic.
+        return GTPPRecipeMaps.treeGrowthSimulatorFakeRecipes;
     }
 
-    private boolean tryDamageTool() {
-        GT_ModHandler.damageOrDechargeItem(this.mInventory[1], 1, 32, null);
-        return replaceTool();
+    /**
+     * Valid processing modes (types of output) for the Tree Growth Simulator.
+     */
+    public enum Mode {
+        LOG,
+        SAPLING,
+        LEAVES,
+        FRUIT
+    }
+
+    /**
+     * Edit this to change relative yields for different modes. For example, logs are output at 5 times the rate of
+     * saplings.
+     */
+    private static final EnumMap<Mode, Integer> modeMultiplier = new EnumMap<>(Mode.class);
+    static {
+        modeMultiplier.put(Mode.LOG, 5);
+        modeMultiplier.put(Mode.SAPLING, 1);
+        modeMultiplier.put(Mode.LEAVES, 2);
+        modeMultiplier.put(Mode.FRUIT, 1);
     }
 
-    public boolean replaceTool() {
-        ItemStack invItem = this.mInventory[1];
-        if (isCorrectMachinePart(invItem)) return true;
-        else {
-            if (invItem != null) {
-                this.mInventory[1] = null;
-                this.addOutput(invItem);
+    /**
+     * Return the output multiplier for a given power tier.
+     * 
+     * @param tier Power tier the machine runs on.
+     * @return Factor to multiply all outputs by.
+     */
+    private static int getTierMultiplier(int tier) {
+        /*
+         * Where does this formula come from? [12:57 AM] boubou_19: i did. Basically Pandoro measured the output of a
+         * WA-ed farming station for each tier of WA, then i computed the Lagrange interpolating polynomial of his
+         * dataset, which gave this
+         */
+        return (2 * (tier * tier)) - (2 * tier) + 5;
+    }
+
+    /**
+     * Key of this map is the registry name of the sapling, followed by ":", and the sapling's metadata value.
+     * <p>
+     * The value of the map is a list of products by {@link Mode}. Products for some modes can be null if the tree does
+     * not produce anything in that mode (for example, it has no fruit).
+     */
+    public static final HashMap<String, EnumMap<Mode, ItemStack>> treeProductsMap = new HashMap<>();
+
+    @Override
+    public ProcessingLogic createProcessingLogic() {
+        return new ProcessingLogic() {
+
+            @Override
+            @Nonnull
+            public CheckRecipeResult process() {
+                if (inputItems == null) {
+                    inputItems = new ItemStack[0];
+                }
+                if (inputFluids == null) {
+                    inputFluids = new FluidStack[0];
+                }
+
+                ItemStack sapling = findSapling();
+                if (sapling == null) return SimpleCheckRecipeResult.ofFailure("no_sapling");
+
+                EnumMap<Mode, ItemStack> outputPerMode = getOutputsForSapling(sapling);
+                if (outputPerMode == null) {
+                    // This should usually not be possible, outputs for all valid saplings should be defined.
+                    Logger.INFO("No output found for sapling: " + sapling.getDisplayName());
+                    return SimpleCheckRecipeResult.ofFailure("no_output_for_sapling");
+                }
+
+                int tier = Math.max(1, GT_Utility.getTier(availableVoltage * availableAmperage));
+                int tierMultiplier = getTierMultiplier(tier);
+
+                List<ItemStack> outputs = new ArrayList<>();
+                for (Mode mode : Mode.values()) {
+                    ItemStack output = outputPerMode.get(mode);
+                    if (output == null) continue; // This sapling has no output in this mode.
+
+                    // Find a tool to use in this mode.
+                    int toolMultiplier = useToolForMode(mode);
+                    if (toolMultiplier < 0) continue; // No valid tool for this mode found.
+
+                    // Increase output by the relevant multipliers.
+                    ItemStack out = output.copy();
+                    out.stackSize *= tierMultiplier * modeMultiplier.get(mode) * toolMultiplier;
+                    outputs.add(out);
+                }
+
+                if (outputs.isEmpty()) {
+                    // No outputs can be produced using the tools we have available.
+                    return SimpleCheckRecipeResult.ofFailure("no_tools");
+                }
+
+                outputItems = outputs.toArray(new ItemStack[0]);
+
+                VoidProtectionHelper voidProtection = new VoidProtectionHelper().setMachine(machine)
+                        .setItemOutputs(outputItems).build();
+                if (voidProtection.isItemFull()) {
+                    return CheckRecipeResultRegistry.ITEM_OUTPUT_FULL;
+                }
+
+                duration = TICKS_PER_OPERATION;
+                calculatedEut = GT_Values.VP[tier];
+
+                return SimpleCheckRecipeResult.ofSuccess("growing_trees");
             }
+        };
+    }
 
-            for (ItemStack aStack : getStoredInputs()) {
-                if (isCorrectMachinePart(aStack)) {
-                    this.mInventory[1] = aStack.copy();
-                    this.depleteInput(aStack);
-                    return true;
+    /* Handling tools. */
+
+    /**
+     * Attempts to find a tool appropriate for the given mode, and damage/discharge it by one use.
+     * 
+     * @param mode The mode to use. This specifies which tools are valid.
+     * @return Production multiplier based on the tool used, or -1 if no appropriate tool was found.
+     */
+    private int useToolForMode(Mode mode) {
+        for (ItemStack stack : getStoredInputs()) {
+            int toolMultiplier = getToolMultiplier(stack, mode);
+            if (toolMultiplier < 0) continue;
+            boolean canDamage = GT_ModHandler
+                    .damageOrDechargeItem(stack, TOOL_DAMAGE_PER_OPERATION, TOOL_CHARGE_PER_OPERATION, null);
+            if (canDamage) {
+                // Tool was used.
+                if (GT_ModHandler.isElectricItem(stack)
+                        && !GT_ModHandler.canUseElectricItem(stack, TOOL_CHARGE_PER_OPERATION)) {
+                    // Tool is out of charge, move it to output.
+                    depleteInput(stack);
+                    addOutput(stack);
                 }
+                return toolMultiplier;
+            } else {
+                // Correct item type, but the tool could not be used.
+                depleteInput(stack);
+                addOutput(stack);
             }
+
         }
-        return false;
+        return -1;
     }
 
-    public boolean checkSapling() {
-        for (ItemStack uStack : this.getStoredInputs()) {
+    /**
+     * Calculate output multiplier for a given tool and mode.
+     * 
+     * @param toolStack The tool to use.
+     * @param mode      The mode to use.
+     * @return Output multiplier for the given tool used in the given mode. If the tool is not appropriate for this
+     *         mode, returns -1.
+     */
+    public static int getToolMultiplier(ItemStack toolStack, Mode mode) {
+        Item tool = toolStack.getItem();
+        switch (mode) {
+            case LOG:
+                if (tool instanceof GT_MetaGenerated_Tool_01) {
+                    switch (toolStack.getItemDamage()) {
+                        case GT_MetaGenerated_Tool_01.SAW:
+                        case GT_MetaGenerated_Tool_01.POCKET_SAW:
+                        case GT_MetaGenerated_Tool_01.POCKET_MULTITOOL:
+                            return 1;
+                        case GT_MetaGenerated_Tool_01.BUZZSAW_LV:
+                        case GT_MetaGenerated_Tool_01.BUZZSAW_MV:
+                        case GT_MetaGenerated_Tool_01.BUZZSAW_HV:
+                            return 2;
+                        case GT_MetaGenerated_Tool_01.CHAINSAW_LV:
+                        case GT_MetaGenerated_Tool_01.CHAINSAW_MV:
+                        case GT_MetaGenerated_Tool_01.CHAINSAW_HV:
+                            return 4;
+                    }
+                }
+                break;
+
+            case SAPLING:
+                if (tool instanceof GT_MetaGenerated_Tool_01) {
+                    switch (toolStack.getItemDamage()) {
+                        case GT_MetaGenerated_Tool_01.BRANCHCUTTER:
+                        case GT_MetaGenerated_Tool_01.POCKET_BRANCHCUTTER:
+                        case GT_MetaGenerated_Tool_01.POCKET_MULTITOOL:
+                            return 1;
+                    }
+                }
+                if (tool instanceof IToolGrafter && tool.isDamageable()) {
+                    return 3;
+                }
+                break;
 
-            if (uStack != null) {
-                String registryName = Item.itemRegistry.getNameForObject(uStack.getItem());
-                ItemStack aWood = sLogCache.get(registryName + ":" + uStack.getItemDamage());
+            case LEAVES:
+                // Do not allow unbreakable tools. Operation should have a running cost.
+                if (tool instanceof ItemShears && tool.isDamageable()) {
+                    return 1;
+                }
+                if (tool instanceof GT_MetaGenerated_Tool_01) {
+                    switch (toolStack.getItemDamage()) {
+                        case GT_MetaGenerated_Tool_01.POCKET_MULTITOOL:
+                            return 1;
+                        case GT_MetaGenerated_Tool_01.WIRECUTTER:
+                        case GT_MetaGenerated_Tool_01.POCKET_WIRECUTTER:
+                            return 2;
+                    }
+                }
+                if (tool instanceof MetaGeneratedGregtechTools) {
+                    if (toolStack.getItemDamage() == MetaGeneratedGregtechTools.ELECTRIC_SNIPS) {
+                        return 4;
+                    }
+                }
+                break;
+
+            case FRUIT:
+                if (tool instanceof GT_MetaGenerated_Tool_01) {
+                    switch (toolStack.getItemDamage()) {
+                        case GT_MetaGenerated_Tool_01.KNIFE:
+                        case GT_MetaGenerated_Tool_01.POCKET_KNIFE:
+                        case GT_MetaGenerated_Tool_01.POCKET_MULTITOOL:
+                            return 1;
+                    }
+                }
+                break;
+        }
 
-                if (aWood != null) {
-                    this.heightModifier = 1.0f;
-                    this.saplingsModifier = 1.0f;
-                    this.girthModifier = 1;
+        // No valid tool was found.
+        return -1;
+    }
 
-                    this.mSapling = uStack;
-                    this.mWood = aWood;
-                    return true;
-                } else {
-                    if (registryName.equals("Forestry:sapling")) {
+    /* Handling saplings. */
 
-                        ITree tree = TreeManager.treeRoot.getMember(uStack);
+    /**
+     * Finds a valid sapling from input buses, and places it into the controller slot.
+     *
+     * @return The sapling that was found (now in the controller slot).
+     */
+    private ItemStack findSapling() {
+        ItemStack controllerSlot = getControllerSlot();
 
-                        this.heightModifier = Math.max(3 * (tree.getGenome().getHeight() - 1), 0) + 1;
-                        this.saplingsModifier = Math.max(tree.getGenome().getFertility() * 20, 1);
-                        this.girthModifier = tree.getGenome().getGirth();
-                        boolean fireproof = ((IAlleleBoolean) tree.getGenome()
-                                .getChromosomes()[EnumTreeChromosome.FIREPROOF.ordinal()].getActiveAllele()).getValue();
+        if (isValidSapling(controllerSlot)) {
+            return controllerSlot;
+        }
 
-                        aWood = sLogCache.get(tree.getIdent() + (fireproof ? "fireproof" : ""));
+        if (controllerSlot != null) {
+            // Non-sapling item in controller slot. This could be a saw from an older version of the TGS.
+            // We first try to swap it with a sapling from an input bus to not interrupt existing setups.
+            if (!legacyToolSwap()) {
+                // Swap failed, output whatever is blocking the slot.
+                addOutput(controllerSlot);
+                mInventory[1] = null;
+            }
+        }
 
-                        this.mSapling = uStack;
-                        this.mWood = aWood;
-                        return true;
-                    }
+        // Here controller slot is empty, find a valid sapling to use.
+        for (ItemStack stack : getStoredInputs()) {
+            if (isValidSapling(stack)) {
+                mInventory[1] = stack.splitStack(1);
+                return mInventory[1];
+            }
+        }
+
+        // No saplings were found.
+        return null;
+    }
+
+    /**
+     * In previous versions, the saw used to be placed in the controller slot and the sapling into an input bus. We do
+     * not want to break existing setups like this, so we attempt to swap the two if possible.
+     *
+     * @return True on success, false otherwise.
+     */
+    private boolean legacyToolSwap() {
+        ItemStack controllerSlot = getControllerSlot();
+        if (controllerSlot == null || !(controllerSlot.getItem() instanceof GT_MetaGenerated_Tool_01)) return false;
+
+        for (GT_MetaTileEntity_Hatch_InputBus inputBus : filterValidMTEs(mInputBusses)) {
+            ItemStack[] inventory = inputBus.getRealInventory();
+            for (int slot = 0; slot < inventory.length; ++slot) {
+                if (isValidSapling(inventory[slot])) {
+                    // Do the swap.
+                    mInventory[1] = inventory[slot];
+                    inventory[slot] = controllerSlot;
+                    inputBus.updateSlots();
+                    return true;
                 }
             }
         }
         return false;
     }
 
-    public static void loadMapWoodFromSapling() {
-
-        // galaxySpace
-        mapSaplingToLog("GalaxySpace:barnardaCsapling:1", GT_ModHandler.getModItem(GalaxySpace.ID, "barnardaClog", 1)); // barnarda
-