Convert even more

src/main/java/io/github/skippyall/minions/gui/MinionsGui.java

@@ -0,0 +1,54 @@
+package io.github.skippyall.minions.gui;
+
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+public abstract class MinionsGui {
+    protected final @Nullable MinionsGui parent;
+    protected final ServerPlayerEntity viewer;
+    private @Nullable MinionsGui child = null;
+    private boolean open = true;
+
+    public MinionsGui(MinionsGui parent) {
+        this.viewer = parent.viewer;
+        this.parent = parent;
+        parent.child = this;
+        open();
+    }
+
+    public MinionsGui(ServerPlayerEntity viewer) {
+        this.viewer = viewer;
+        this.parent = null;
+        open();
+    }
+
+    protected void open() {}
+
+    protected void reopen() {
+        open();
+    }
+
+    public void onBackingClosed() {
+        if(child != null && child.open) {
+            return;
+        }
+
+        close();
+    }
+
+    public void close() {
+        if(open) {
+            if(child != null) {
+                child.close();
+            }
+            if(parent != null) {
+                parent.child = null;
+                parent.reopen();
+            }
+            onClose();
+            open = false;
+        }
+    }
+
+    protected void onClose() {}
+}

src/main/java/io/github/skippyall/minions/gui/PaginatedList.java

@@ -0,0 +1,59 @@
+package io.github.skippyall.minions.gui;
+
+import eu.pb4.sgui.api.elements.GuiElementBuilder;
+import eu.pb4.sgui.api.gui.SlotGuiInterface;
+import io.github.skippyall.minions.gui.minion.MinionGui;
+import net.minecraft.item.Items;
+import net.minecraft.text.Text;
+import net.minecraft.util.collection.IndexedIterable;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Function;
+
+public class PaginatedList {
+    public static void createList(SlotGuiInterface gui, int size, Function<Integer, GuiElementBuilder> display, Runnable onBack) {
+        AtomicInteger page = new AtomicInteger(0);
+        addItems(page, gui, size, display);
+
+        gui.setSlot(27, MinionGui.backButton(onBack));
+    }
+
+    public static <T> void createList(SlotGuiInterface gui, List<T> list, Function<T, GuiElementBuilder> display, Runnable onBack) {
+        createList(gui, list.size(), i -> display.apply(list.get(i)), onBack);
+    }
+
+    public static <T> void createList(SlotGuiInterface gui, IndexedIterable<T> list, Function<T, GuiElementBuilder> display, Runnable onBack) {
+        createList(gui, list.size(), i -> display.apply(list.get(i)), onBack);
+    }
+
+    private static void addItems(AtomicInteger page, SlotGuiInterface gui, int size, Function<Integer, GuiElementBuilder> display) {
+        for(int i = 27 * page.get(); i < Math.min(27 * (page.get() + 1), size); i++) {
+            gui.addSlot(display.apply(i));
+        }
+
+        if(page.get() > 0) {
+            gui.setSlot(30, new GuiElementBuilder(Items.SPECTRAL_ARROW)
+                    .setItemName(Text.translatable("book.page_button.previous"))
+                    .setCallback(() -> {
+                        page.decrementAndGet();
+                        addItems(page, gui, size, display);
+                    })
+            );
+        } else {
+            gui.clearSlot(30);
+        }
+
+        if(27 * (page.get() + 1) < size) {
+            gui.setSlot(32, new GuiElementBuilder(Items.ARROW)
+                    .setItemName(Text.translatable("book.page_button.next"))
+                    .setCallback(() -> {
+                        page.incrementAndGet();
+                        addItems(page, gui, size, display);
+                    })
+            );
+        } else {
+            gui.clearSlot(32);
+        }
+    }
+}

src/main/java/io/github/skippyall/minions/gui/input/Result.java

@@ -25,11 +25,11 @@ public interface Result<T, E> {
 
     boolean isSuccess();
 
-    @NotNull T getOrDefault(@NotNull T defaultValue);
+    T getOrDefault(T defaultValue);
 
-    @NotNull T getOrThrow();
+    T getOrThrow();
 
-    @NotNull E getErrorOrThrow();
+    E getErrorOrThrow();
 
     @NotNull Optional<T> getOptional();
 
@@ -37,24 +37,24 @@ public interface Result<T, E> {
 
     void ifError(@NotNull Consumer<Error<T, E>> handler);
 
-    record Success<T, E>(@NotNull T result) implements Result<T, E> {
+    record Success<T, E>(T result) implements Result<T, E> {
         @Override
         public boolean isSuccess() {
             return true;
         }
 
         @Override
-        public @NotNull T getOrDefault(@NotNull T defaultValue) {
+        public T getOrDefault(T defaultValue) {
             return result;
         }
 
         @Override
-        public @NotNull T getOrThrow() {
+        public T getOrThrow() {
             return result;
         }
 
         @Override
-        public @NotNull E getErrorOrThrow() {
+        public E getErrorOrThrow() {
             throw new RuntimeException("Result was not an Error");
         }
 
@@ -74,24 +74,25 @@ public interface Result<T, E> {
         }
     }
 
-    record Error<T, E>(@NotNull E message) implements Result<T, E> {
+    record Error<T, E>(E message) implements Result<T, E> {
         @Override
         public boolean isSuccess() {
             return false;
         }
 
         @Override
-        public @NotNull T getOrDefault(@NotNull T defaultValue) {
+        public T getOrDefault(
+                T defaultValue) {
             return defaultValue;
         }
 
         @Override
-        public @NotNull T getOrThrow() {
+        public T getOrThrow() {
             throw new RuntimeException("Result was an error: " + message);
         }
 
         @Override
-        public @NotNull E getErrorOrThrow() {
+        public E getErrorOrThrow() {
             return message;
         }
 

src/main/java/io/github/skippyall/minions/gui/instruction/ArgumentGui.java

@@ -0,0 +1,81 @@
+package io.github.skippyall.minions.gui.instruction;
+
+import eu.pb4.sgui.api.elements.GuiElementBuilder;
+import eu.pb4.sgui.api.gui.SimpleGui;
+import io.github.skippyall.minions.gui.GuiDisplay;
+import io.github.skippyall.minions.minion.MinionRuntime;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.instruction.ConfiguredInstruction;
+import io.github.skippyall.minions.program.supplier.Parameter;
+import io.github.skippyall.minions.program.supplier.ValueSupplier;
+import io.github.skippyall.minions.program.supplier.ValueSupplierType;
+import io.github.skippyall.minions.registration.MinionRegistries;
+import io.github.skippyall.minions.util.TranslationUtil;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.Items;
+import net.minecraft.screen.ScreenHandlerType;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.text.Text;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.CompletableFuture;
+
+public class ArgumentGui {
+    public static <T, A extends ValueSupplier<T, MinionRuntime>> void configureArgumentMenu(String instructionName, ConfiguredInstruction<MinionRuntime> instruction, Parameter<?> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
+        if (!InstructionGui.checkInstructionExists(instructionName, instruction, minion, player)) {
+            return;
+        }
+
+        @Nullable ValueSupplier<?, MinionRuntime> argument = instruction.getArguments().getArgument(parameter);
+
+        if(argument == null) {
+            configureTypeAndValue(instructionName, instruction, parameter, minion, player);
+            return;
+        }
+
+        configureArgumentHelper(instructionName, instruction, parameter, argument, minion, player);
+    }
+
+    private static <F, T> void configureArgumentHelper(String instructionName, ConfiguredInstruction<MinionRuntime> instruction, Parameter<T> parameter, ValueSupplier<F, MinionRuntime> argument, MinionFakePlayer minion, ServerPlayerEntity player) {
+        SimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_3X3, player, minion, instruction);
+
+        ItemStack displayStack = GuiDisplay.getDisplayStack(MinionRegistries.VALUE_SUPPLIER_TYPES, argument.getType(), player.getRegistryManager());
+
+        gui.setSlot(3, new GuiElementBuilder(displayStack)
+                .setName(Text.translatable("minions.gui.instruction.argument.configure.type", Text.translatable(TranslationUtil.getTranslationKey(argument.getType(), MinionRegistries.VALUE_SUPPLIER_TYPES, "minions.gui.instruction.argument.configure.type.unset"))))
+                .setCallback(() -> configureTypeAndValue(instructionName, instruction, parameter, minion, player))
+        );
+        gui.setSlot(5, new GuiElementBuilder(Items.STRUCTURE_VOID)
+                .setName(Text.literal("Configure"))
+                .setCallback(() -> argument.getType().openConfiguration(player, argument.getValueType(), argument)
+                        .thenAccept(newArgument -> {
+                            instruction.getArguments().setArgument(parameter, newArgument);
+                            configureArgumentMenu(instructionName, instruction, parameter, minion, player);
+                        })
+                )
+        );
+        gui.open();
+    }
+
+    public static CompletableFuture<ValueSupplierType<MinionRuntime>> selectArgumentType(ServerPlayerEntity player, MinionFakePlayer minion, ConfiguredInstruction<MinionRuntime> instruction) {
+        CompletableFuture<ValueSupplierType<MinionRuntime>> future = new CompletableFuture<>();
+        SimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_9X3, player, minion, instruction);
+        for (ValueSupplierType<MinionRuntime> type : MinionRegistries.VALUE_SUPPLIER_TYPES) {
+            gui.addSlot(new GuiElementBuilder(GuiDisplay.getDisplayStackWithName(MinionRegistries.VALUE_SUPPLIER_TYPES, type, player.getRegistryManager()))
+                    .setCallback(() -> future.complete(type))
+            );
+        }
+        gui.open();
+        return future;
+    }
+
+    public static <T> void configureTypeAndValue(String name, ConfiguredInstruction<MinionRuntime> instruction, Parameter<T> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
+        selectArgumentType(player, minion, instruction)
+                .thenApply(type -> type.openConfiguration(player, parameter.type(), null)
+                        .thenAccept(v -> {
+                            instruction.getArguments().setArgument(parameter, v);
+                            configureArgumentMenu(name, instruction, parameter, minion, player);
+                        })
+                );
+    }
+}

src/main/java/io/github/skippyall/minions/gui/instruction/ConfigureInstructionGui.java

@@ -1,4 +1,4 @@
-package io.github.skippyall.minions.gui;
+package io.github.skippyall.minions.gui.instruction;
 
 import eu.pb4.sgui.api.elements.GuiElementBuilder;
 import io.github.skippyall.minions.gui.input.ChoiceInput;
@@ -108,7 +108,7 @@ public class ConfigureInstructionGui extends InstructionBoundSimpleGui {
         int slot = 12;
         for(Parameter<?> parameter : instruction.getInstruction().getParameters().reversed()) {
             setSlot(slot, InstructionGui.createParameterElement(parameter, instruction.getArguments().getArgument(parameter), player.getRegistryManager())
-                    .setCallback(() -> InstructionGui.configureArgumentMenu(name, instruction, parameter, minion, player))
+                    .setCallback(() -> ArgumentGui.configureArgumentMenu(name, instruction, parameter, minion, player))
             );
             slot--;
         }

src/main/java/io/github/skippyall/minions/gui/instruction/ConverterGui.java

@@ -0,0 +1,71 @@
+package io.github.skippyall.minions.gui.instruction;
+
+import eu.pb4.sgui.api.elements.GuiElementBuilder;
+import io.github.skippyall.minions.gui.GuiDisplay;
+import io.github.skippyall.minions.gui.PaginatedList;
+import io.github.skippyall.minions.minion.MinionRuntime;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.program.conversion.ValueConverter;
+import io.github.skippyall.minions.program.conversion.ValueConverterType;
+import io.github.skippyall.minions.program.instruction.ConfiguredInstruction;
+import io.github.skippyall.minions.program.supplier.Parameter;
+import io.github.skippyall.minions.program.supplier.ValueSupplierList;
+import io.github.skippyall.minions.program.value.ValueType;
+import io.github.skippyall.minions.registration.MinionRegistries;
+import net.minecraft.item.Items;
+import net.minecraft.registry.DynamicRegistryManager;
+import net.minecraft.screen.ScreenHandlerType;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+public class ConverterGui {
+    public static void configureConvertersMenu(ServerPlayerEntity player, MinionFakePlayer minion, ConfiguredInstruction<MinionRuntime> instruction, Parameter<?> parameter, Runnable back) {
+        InstructionBoundSimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_9X4, player, minion, instruction);
+
+        ValueSupplierList.ValueSupplierEntry<?,?,MinionRuntime> entry = instruction.getArguments().getEntry(parameter);
+        PaginatedList.createList(
+                gui,
+                entry.getConverters(),
+                converter -> createConverterElement(converter, player.getRegistryManager())
+                    .setCallback(() -> configureConverter(player, minion, instruction, parameter, entry, converter)),
+                back
+        );
+        gui.open();
+    }
+
+    public static GuiElementBuilder createConverterElement(ValueConverter<?,?> converter, DynamicRegistryManager manager) {
+        GuiElementBuilder builder = new GuiElementBuilder(GuiDisplay.getDisplayStack(MinionRegistries.VALUE_CONVERTER_TYPES, converter.getType(), manager));
+        builder.addLoreLine(converter.getDisplayText());
+        return builder;
+    }
+
+    public static void configureConverter(ServerPlayerEntity player, MinionFakePlayer minion, ConfiguredInstruction<MinionRuntime> instruction, Parameter<?> parameter, ValueSupplierList.ValueSupplierEntry<?,?,MinionRuntime> entry, @Nullable ValueConverter<?,?> converter) {
+        InstructionBoundSimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_3X3, player, minion, instruction);
+        gui.setSlot(3, new GuiElementBuilder(GuiDisplay.getDisplayStackWithName(MinionRegistries.VALUE_CONVERTER_TYPES, converter.getType(), player.getRegistryManager()))
+                .setCallback(() -> {
+                    InstructionBoundSimpleGui chooseTypeGui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_9X4, player, minion, instruction);
+                    PaginatedList.createList(
+                            chooseTypeGui,
+                            MinionRegistries.VALUE_CONVERTER_TYPES,
+                            type -> new GuiElementBuilder(GuiDisplay.getDisplayStackWithName(MinionRegistries.VALUE_CONVERTER_TYPES, type, player.getRegistryManager()))
+                                    .setCallback(() -> {
+                                        entry.set
+                                    }),
+                            () -> configureConverter(player, minion, instruction, parameter, entry, converter)
+                    );
+                }));
+
+        gui.setSlot(5, new GuiElementBuilder(Items.STRUCTURE_VOID));
+
+        gui.open();
+    }
+
+    public static <F,T> void selectConverterMenu(ValueType<F> from, ValueType<T> to, ServerPlayerEntity player, MinionFakePlayer minion, ConfiguredInstruction<MinionRuntime> instruction) {
+        InstructionBoundSimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_9X3, player, minion, instruction);
+        for(ValueConverterType<?> valueConverterType : MinionRegistries.VALUE_CONVERTER_TYPES) {
+            gui.addSlot(new GuiElementBuilder(GuiDisplay.getDisplayStackWithName(MinionRegistries.VALUE_CONVERTER_TYPES, valueConverterType, player.getRegistryManager()))
+                    .setCallback(() -> valueConverterType.configure(player, from, to, null).thenAccept(c -> )));
+        }
+        gui.open();
+    }
+}

src/main/java/io/github/skippyall/minions/gui/instruction/InstructionBoundSimpleGui.java

@@ -1,5 +1,6 @@
-package io.github.skippyall.minions.gui;
+package io.github.skippyall.minions.gui.instruction;
 
+import io.github.skippyall.minions.gui.MinionBoundSimpleGui;
 import io.github.skippyall.minions.minion.MinionRuntime;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.program.instruction.ConfiguredInstruction;

src/main/java/io/github/skippyall/minions/gui/instruction/InstructionGui.java

@@ -1,7 +1,9 @@
-package io.github.skippyall.minions.gui;
+package io.github.skippyall.minions.gui.instruction;
 
 import eu.pb4.sgui.api.elements.GuiElementBuilder;
 import eu.pb4.sgui.api.gui.SimpleGui;
+import io.github.skippyall.minions.gui.GuiDisplay;
+import io.github.skippyall.minions.gui.MinionBoundSimpleGui;
 import io.github.skippyall.minions.registration.MinionComponentTypes;
 import io.github.skippyall.minions.registration.MinionRegistries;
 import io.github.skippyall.minions.gui.input.Result;
@@ -10,7 +12,6 @@ import io.github.skippyall.minions.minion.MinionRuntime;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
 import io.github.skippyall.minions.module.MinionModule;
 import io.github.skippyall.minions.program.supplier.ValueSupplier;
-import io.github.skippyall.minions.program.supplier.ValueSupplierType;
 import io.github.skippyall.minions.program.instruction.ConfiguredInstruction;
 import io.github.skippyall.minions.program.instruction.InstructionType;
 import io.github.skippyall.minions.program.supplier.Parameter;
@@ -99,62 +100,6 @@ public class InstructionGui {
         return stillExists;
     }
 
-
-    public static <T, A extends ValueSupplier<T, MinionRuntime>> void configureArgumentMenu(String instructionName, ConfiguredInstruction<MinionRuntime> instruction, Parameter<?> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
-        if (!checkInstructionExists(instructionName, instruction, minion, player)) {
-            return;
-        }
-
-        @Nullable ValueSupplier<?, MinionRuntime> argument = instruction.getArguments().getArgument(parameter);
-
-        if(argument == null) {
-            configureTypeAndValue(instructionName, instruction, parameter, minion, player);
-            return;
-        }
-
-        configureArgumentHelper(instructionName, instruction, parameter, argument, minion, player);
-    }
-
-    private static <T> void configureArgumentHelper(String instructionName, ConfiguredInstruction<MinionRuntime> instruction, Parameter<?> parameter, ValueSupplier<T, MinionRuntime> argument, MinionFakePlayer minion, ServerPlayerEntity player) {
-        SimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_3X3, player, minion, instruction);
-
-        ItemStack displayStack = GuiDisplay.getDisplayStack(MinionRegistries.VALUE_SUPPLIER_TYPES, argument.getType(), player.getRegistryManager());
-
-        gui.setSlot(3, new GuiElementBuilder(displayStack)
-                .setName(Text.translatable("minions.gui.instruction.argument.configure.type", Text.translatable(TranslationUtil.getTranslationKey(argument.getType(), MinionRegistries.VALUE_SUPPLIER_TYPES, "minions.gui.instruction.argument.configure.type.unset"))))
-                .setCallback(() -> configureTypeAndValue(instructionName, instruction, parameter, minion, player))
-        );
-        gui.setSlot(5, new GuiElementBuilder(Items.STRUCTURE_VOID)
-                .setName(Text.literal("Configure"))
-                .setCallback(() -> argument.getType().openConfiguration(player, argument.getValueType(), argument)
-                        .thenAccept(newArgument -> instruction.getArguments().setArgument(parameter, newArgument))
-                )
-        );
-        gui.open();
-    }
-
-    public static CompletableFuture<ValueSupplierType<MinionRuntime>> selectArgumentType(ServerPlayerEntity player, MinionFakePlayer minion, ConfiguredInstruction<MinionRuntime> instruction) {
-        CompletableFuture<ValueSupplierType<MinionRuntime>> future = new CompletableFuture<>();
-        SimpleGui gui = new InstructionBoundSimpleGui(ScreenHandlerType.GENERIC_9X3, player, minion, instruction);
-        for (ValueSupplierType<MinionRuntime> type : MinionRegistries.VALUE_SUPPLIER_TYPES) {
-            gui.addSlot(new GuiElementBuilder(GuiDisplay.getDisplayStackWithName(MinionRegistries.VALUE_SUPPLIER_TYPES, type, player.getRegistryManager()))
-                    .setCallback(() -> future.complete(type))
-            );
-        }
-        gui.open();
-        return future;
-    }
-
-    public static <T> void configureTypeAndValue(String name, ConfiguredInstruction<MinionRuntime> instruction, Parameter<T> parameter, MinionFakePlayer minion, ServerPlayerEntity player) {
-        selectArgumentType(player, minion, instruction)
-                .thenApply(type -> type.openConfiguration(player, parameter.type(), null)
-                        .thenAccept(newArgument -> {
-                            instruction.getArguments().setArgument(parameter, newArgument);
-                            configureArgumentMenu(name, instruction, parameter, minion, player);
-                        })
-                );
-    }
-
     public static CompletableFuture<InstructionType<MinionRuntime>> selectInstructionModuleMenu(MinionFakePlayer minion, ServerPlayerEntity player) {
         if (minion.getModuleInventory().getModules().isEmpty()) {
             player.sendMessage(Text.translatable("minions.gui.instruction.no_modules"));

src/main/java/io/github/skippyall/minions/gui/minion/MinionGui.java

@@ -0,0 +1,93 @@
+package io.github.skippyall.minions.gui.minion;
+
+import eu.pb4.sgui.api.elements.GuiElementBuilder;
+import eu.pb4.sgui.api.gui.SimpleGui;
+import io.github.skippyall.minions.gui.MinionsGui;
+import io.github.skippyall.minions.gui.instruction.InstructionGui;
+import io.github.skippyall.minions.minion.MinionListener;
+import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
+import io.github.skippyall.minions.module.ModuleInventory;
+import net.minecraft.entity.EquipmentSlot;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.Items;
+import net.minecraft.screen.ScreenHandlerType;
+import net.minecraft.screen.slot.ArmorSlot;
+import net.minecraft.screen.slot.Slot;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.text.Text;
+
+public class MinionGui extends MinionsGui implements MinionListener {
+    private final MinionFakePlayer minion;
+    private SimpleGui gui;
+
+    public MinionGui(ServerPlayerEntity viewer, MinionFakePlayer minion) {
+        super(viewer);
+        this.minion = minion;
+        minion.addMinionListener(this);
+    }
+
+    public MinionFakePlayer getMinion() {
+        return minion;
+    }
+
+    @Override
+    protected void open() {
+        gui = new SimpleGui(ScreenHandlerType.GENERIC_3X3, viewer, false) {
+            @Override
+            public void onClose() {
+                onBackingClosed();
+            }
+        };
+
+        gui.setTitle(minion.getName());
+
+        gui.setSlot(1, new GuiElementBuilder()
+                .setItem(Items.COMMAND_BLOCK)
+                .setName(Text.translatable("minions.gui.main.instructions"))
+                .setCallback(() -> {
+                    InstructionGui.openInstructionMainMenu(minion, viewer);
+                })
+        );
+        gui.setSlot(3, new GuiElementBuilder()
+                .setItem(Items.NETHERITE_UPGRADE_SMITHING_TEMPLATE)
+                .setName(Text.translatable("minions.gui.main.modules"))
+                .setCallback(() -> {
+                    ModuleInventory.openModuleInventory(viewer, minion);
+                })
+        );
+        gui.setSlot(5, new GuiElementBuilder()
+                .setItem(Items.CHEST)
+                .setName(Text.translatable("minions.gui.main.inventory"))
+                .setCallback(() -> new MinionInventoryGui(this))
+        );
+        gui.setSlot(7, new GuiElementBuilder()
+                .setItem(Items.BARRIER)
+                .setName(Text.translatable("minions.gui.main.pickup"))
+                .setCallback(() -> minion.kill(minion.getWorld()))
+        );
+        gui.open();
+    }
+
+    @Override
+    protected void reopen() {
+        gui.open();
+    }
+
+    @Override
+    protected void onClose() {
+        gui.close();
+        minion.removeMinionListener(this);
+    }
+
+    @Override
+    public void onMinionRemove(MinionFakePlayer minion) {
+        close();
+    }
+
+    public static GuiElementBuilder backButton(Runnable onBack) {
+        return new GuiElementBuilder(Items.COMPASS)
+                .setItemName(Text.translatable("gui.back"))
+                .setCallback(onBack);
+    }
+}

src/main/java/io/github/skippyall/minions/gui/minion/MinionInventoryGui.java

@@ -1,9 +1,8 @@
-package io.github.skippyall.minions.gui;
+package io.github.skippyall.minions.gui.minion;
 
-import eu.pb4.sgui.api.elements.GuiElementBuilder;
 import eu.pb4.sgui.api.gui.SimpleGui;
+import io.github.skippyall.minions.gui.MinionsGui;
 import io.github.skippyall.minions.minion.fakeplayer.MinionFakePlayer;
-import io.github.skippyall.minions.module.ModuleInventory;
 import net.minecraft.entity.EquipmentSlot;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.item.ItemStack;
@@ -11,51 +10,28 @@ import net.minecraft.item.Items;
 import net.minecraft.screen.ScreenHandlerType;
 import net.minecraft.screen.slot.ArmorSlot;
 import net.minecraft.screen.slot.Slot;
-import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.Text;
 
-public class MinionGui {
-    public static void openInventory(ServerPlayerEntity player, MinionFakePlayer minion) {
-        openServerSideInventory(player, minion);
+public class MinionInventoryGui extends MinionsGui {
+    protected final MinionGui parent;
+    private final MinionFakePlayer minion;
+
+    private SimpleGui gui;
+
+    public MinionInventoryGui(MinionGui parent) {
+        super(parent);
+        this.parent = parent;
+        this.minion = parent.getMinion();
     }
 
-    public static void openServerSideInventory(ServerPlayerEntity player, MinionFakePlayer minion) {
-        SimpleGui gui = new SimpleGui(ScreenHandlerType.GENERIC_3X3, player, false);
-        gui.setTitle(minion.getName());
-
-        gui.setSlot(1, new GuiElementBuilder()
-                .setItem(Items.COMMAND_BLOCK)
-                .setName(Text.translatable("minions.gui.main.instructions"))
-                .setCallback((i, clickType, slotActionType) -> {
-                    InstructionGui.openInstructionMainMenu(minion, player);
-                })
-        );
-        gui.setSlot(3, new GuiElementBuilder()
-                .setItem(Items.NETHERITE_UPGRADE_SMITHING_TEMPLATE)
-                .setName(Text.translatable("minions.gui.main.modules"))
-                .setCallback(() -> {
-                    ModuleInventory.openModuleInventory(player, minion);
-                })
-        );
-        gui.setSlot(5, new GuiElementBuilder()
-                .setItem(Items.CHEST)
-                .setName(Text.translatable("minions.gui.main.inventory"))
-                .setCallback(() -> {
-                    openMinionInventory(player, minion);
-                })
-        );
-        gui.setSlot(7, new GuiElementBuilder()
-                .setItem(Items.BARRIER)
-                .setName(Text.translatable("minions.gui.main.pickup"))
-                .setCallback(() -> {
-                    minion.kill(minion.getWorld());
-                })
-        );
-        gui.open();
+    @Override
+    protected void open() {
+        gui = new SimpleGui(ScreenHandlerType.GENERIC_9X6, viewer, false) {
+            @Override
+            public void onClose() {
+                onBackingClosed();
             }
-
-    public static void openMinionInventory(ServerPlayerEntity player, MinionFakePlayer minion) {
-        SimpleGui gui = new SimpleGui(ScreenHandlerType.GENERIC_9X6, player, false);
+        };
         gui.setTitle(Text.translatable("minions.gui.inventory.title"));
 
         for(int i = 0; i < 18; i++) {
@@ -83,4 +59,9 @@ public class MinionGui {
         }
         gui.open();
     }
+
+    @Override
+    protected void onClose() {
+        gui.close();
+    }
 }

src/main/java/io/github/skippyall/minions/minion/fakeplayer/MinionFakePlayer.java

@@ -7,7 +7,7 @@ import io.github.skippyall.minions.registration.MinionConfigOptions;
 import io.github.skippyall.minions.registration.MinionItems;
 import io.github.skippyall.minions.minion.MinionListener;
 import io.github.skippyall.minions.minion.MinionData;
-import io.github.skippyall.minions.gui.MinionGui;
+import io.github.skippyall.minions.gui.minion.MinionGui;
 import io.github.skippyall.minions.minion.MinionRuntime;
 import io.github.skippyall.minions.minion.MinionItem;
 import io.github.skippyall.minions.minion.MinionPersistentState;
@@ -24,7 +24,6 @@ import net.minecraft.entity.damage.DamageSource;
 import net.minecraft.entity.player.HungerManager;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.vehicle.AbstractBoatEntity;
-import net.minecraft.entity.vehicle.BoatEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.network.DisconnectionInfo;
 import net.minecraft.network.NetworkSide;
@@ -156,7 +155,7 @@ public class MinionFakePlayer extends ServerPlayerEntity {
     @Override
     public ActionResult interact(PlayerEntity player, Hand hand) {
         if(player instanceof ServerPlayerEntity spe) {
-            MinionGui.openInventory(spe, this);
+            new MinionGui(spe, this);
         }
         return ActionResult.CONSUME;
     }

src/main/java/io/github/skippyall/minions/minion/program/supplier/AnalogInputSupplier.java

@@ -62,7 +62,7 @@ public class AnalogInputSupplier implements ValueSupplier<Long, MinionRuntime> {
 
     @Override
     public Text getDisplayText() {
-        return Text.translatable("value_supplier_type.minions.analog_input.display", analogInputPos.toString(), analogInputWorld.getValue());
+        return Text.translatable("value_supplier_type.minions.analog_input.display", analogInputPos.toString(), analogInputWorld.getValue().toString());
     }
 
     public static class AnalogInputSupplierType extends ValueSupplierType<MinionRuntime> {
@@ -75,12 +75,8 @@ public class AnalogInputSupplier implements ValueSupplier<Long, MinionRuntime> {
         }
 
         @Override
-        public <T> CompletableFuture<ValueSupplier<T, MinionRuntime>> openConfiguration(ServerPlayerEntity player, ValueType<T> valueType, @Nullable ValueSupplier<T, MinionRuntime> previous) {
-            if(valueType != ValueTypes.LONG) {
-                return CompletableFuture.failedFuture(new IllegalArgumentException("Value type " + valueType + " not allowed"));
-            }
-
-            CompletableFuture<ValueSupplier<T, MinionRuntime>> future = new CompletableFuture<>();
+        public <T> CompletableFuture<ValueSupplier<?, MinionRuntime>> openConfiguration(ServerPlayerEntity player, ValueType<T> valueType, @Nullable ValueSupplier<T, MinionRuntime> previous) {
+            CompletableFuture<ValueSupplier<?, MinionRuntime>> future = new CompletableFuture<>();
 
             SimpleGui gui = new SimpleGui(ScreenHandlerType.GENERIC_3X3, player, false);
             gui.setTitle(Text.translatable("value_supplier_type.minions.analog_input"));
@@ -89,11 +85,12 @@ public class AnalogInputSupplier implements ValueSupplier<Long, MinionRuntime> {
                     .setCallback(() -> {
                         ItemStack cursor = player.currentScreenHandler.getCursorStack();
                         if(cursor.isOf(MinionItems.REFERENCE_ITEM) && cursor.get(MinionComponentTypes.REFERENCE) instanceof BlockPosClipboard pos) {
-                            future.complete(new AnalogInputSupplier(pos.world(), pos.pos()).cast(valueType));
+                            future.complete(new AnalogInputSupplier(pos.world(), pos.pos()));
                         }
                     })
                     .setItemName(Text.translatable("value_supplier_type.minions.analog_input.config.click_with_reference"))
             );
+            gui.open();
             return future;
         }
     }

src/main/java/io/github/skippyall/minions/program/conversion/Cast.java

@@ -1,4 +1,6 @@
-package io.github.skippyall.minions.program.value;
+package io.github.skippyall.minions.program.conversion;
+
+import io.github.skippyall.minions.program.value.ValueType;
 
 public class Cast<F, T> {
     private final ValueType<F> from;

src/main/java/io/github/skippyall/minions/program/conversion/CastConverter.java

@@ -0,0 +1,64 @@
+package io.github.skippyall.minions.program.conversion;
+
+import com.mojang.serialization.MapCodec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
+import io.github.skippyall.minions.program.value.ValueType;
+import io.github.skippyall.minions.registration.MinionRegistries;
+import io.github.skippyall.minions.registration.ValueConverters;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.CompletableFuture;
+
+public class CastConverter<F,T> implements ValueConverter<F,T> {
+    private static final MapCodec<CastConverter<?,?>> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
+                    MinionRegistries.VALUE_TYPES.getCodec().fieldOf("from").forGetter(CastConverter::getFrom),
+                    MinionRegistries.VALUE_TYPES.getCodec().fieldOf("to").forGetter(CastConverter::getTo)
+            ).apply(instance, CastConverter::new)
+    );
+
+    private final ValueType<F> from;
+    private final ValueType<T> to;
+
+    public CastConverter(ValueType<F> from, ValueType<T> to) {
+        this.from = from;
+        this.to = to;
+    }
+
+    @Override
+    public T convert(F fromValue) {
+        return Casts.getCast(from, to).cast(fromValue);
+    }
+
+    @Override
+    public ValueType<F> getFrom() {
+        return from;
+    }
+
+    @Override
+    public ValueType<T> getTo() {
+        return to;
+    }
+
+    @Override
+    public ValueConverterType<?> getType() {
+        return ValueConverters.CAST_CONVERTER;
+    }
+
+    public static class Type implements ValueConverterType<CastConverter<?,?>> {
+        @Override
+        public MapCodec<CastConverter<?, ?>> getCodec() {
+            return CastConverter.CODEC;
+        }
+
+        @Override
+        public boolean isSupportedConversion(ValueType<?> from, ValueType<?> to) {
+            return Casts.getCast(from, to) != null;
+        }
+
+        @Override
+        public <F,T> CompletableFuture<CastConverter<?,?>> configure(ServerPlayerEntity player, ValueType<F> from, ValueType<T> to, @Nullable CastConverter<?, ?> old) {
+            return CompletableFuture.completedFuture(new CastConverter<>(from, to));
+        }
+    }
+}

src/main/java/io/github/skippyall/minions/program/conversion/Casts.java

@@ -1,5 +1,6 @@
-package io.github.skippyall.minions.program.value;
+package io.github.skippyall.minions.program.conversion;
 
+import io.github.skippyall.minions.program.value.ValueType;
 import io.github.skippyall.minions.registration.ValueTypes;
 import org.jetbrains.annotations.Nullable;
 

src/main/java/io/github/skippyall/minions/program/conversion/EqualityConverter.java

@@ -0,0 +1,73 @@
+package io.github.skippyall.minions.program.conversion;
+
+import com.mojang.serialization.MapCodec;
+import io.github.skippyall.minions.program.value.ValueType;
+import io.github.skippyall.minions.registration.MinionRegistries;
+import io.github.skippyall.minions.registration.ValueTypes;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.CompletableFuture;
+
+public class EqualityConverter<F> implements ValueConverter<F, Boolean> {
+    public static final MapCodec<EqualityConverter<?>> CODEC = MinionRegistries.VALUE_TYPES.getCodec().dispatchMap(
+            EqualityConverter::getFrom,
+            EqualityConverter::getCodec
+    );
+
+    private ValueType<F> fromType;
+    private F compareValue;
+
+    public EqualityConverter(ValueType<F> fromType, F compareValue) {
+        this.fromType = fromType;
+        this.compareValue = compareValue;
+    }
+
+    @Override
+    public Boolean convert(F from) {
+        return compareValue.equals(from);
+    }
+
+    @Override
+    public ValueType<F> getFrom() {
+        return fromType;
+    }
+
+    @Override
+    public ValueType<Boolean> getTo() {
+        return ValueTypes.BOOLEAN;
+    }
+
+    @Override
+    public ValueConverterType<?> getType() {
+        return null;
+    }
+
+    private static <F> MapCodec<EqualityConverter<F>> getCodec(ValueType<F> fromType) {
+        return fromType.codec().fieldOf("compareValue")
+                .xmap(compareValue -> new EqualityConverter<>(fromType, compareValue), converter -> converter.compareValue);
+    }
+
+    public static class EqualityConverterType implements ValueConverterType<EqualityConverter<?>> {
+        @Override
+        public MapCodec<EqualityConverter<?>> getCodec() {
+            return CODEC;
+        }
+
+        @Override
+        public boolean isSupportedConversion(ValueType<?> from, ValueType<?> to) {
+            return to == ValueTypes.BOOLEAN;
+        }
+
+        @Override
+        public <F,T> CompletableFuture<EqualityConverter<?>> configure(ServerPlayerEntity player, ValueType<F> from, ValueType<T> to, @Nullable EqualityConverter<?> old) {
+            if(to == ValueTypes.BOOLEAN) {
+                //noinspection unchecked
+                return from.openValueDialog(player, old != null && old.fromType == from ? (F) old.compareValue : null)
+                        .thenApply(compareValue -> new EqualityConverter<>(from, compareValue));
+            } else {
+                return CompletableFuture.failedFuture(new IllegalArgumentException("EqualityConverter does not support converting to " + to));
+            }
+        }
+    }
+}

src/main/java/io/github/skippyall/minions/program/conversion/ValueConverter.java

@@ -0,0 +1,29 @@
+package io.github.skippyall.minions.program.conversion;
+
+import com.mojang.serialization.Codec;
+import io.github.skippyall.minions.program.value.ValueType;
+import io.github.skippyall.minions.registration.MinionRegistries;
+import net.minecraft.text.Text;
+
+public interface ValueConverter<F,T> {
+    Codec<ValueConverter<?,?>> CODEC = MinionRegistries.VALUE_CONVERTER_TYPES.getCodec().dispatch(ValueConverter::getType, ValueConverterType::getCodec);
+
+    T convert(F from);
+
+    ValueType<F> getFrom();
+
+    ValueType<T> getTo();
+
+    ValueConverterType<?> getType();
+
+    Text getDisplayText();
+
+    default <F2,T2> ValueConverter<F2,T2> cast(ValueType<F2> from, ValueType<T2> to) {
+        if(from == getFrom() && to == getTo()) {
+            //noinspection unchecked
+            return (ValueConverter<F2, T2>) this;
+        } else {
+            return null;
+        }
+    }
+}

src/main/java/io/github/skippyall/minions/program/conversion/ValueConverterType.java

@@ -0,0 +1,16 @@
+package io.github.skippyall.minions.program.conversion;
+
+import com.mojang.serialization.MapCodec;
+import io.github.skippyall.minions.program.value.ValueType;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.CompletableFuture;
+
+public interface ValueConverterType<C extends ValueConverter<?,?>> {
+    MapCodec<C> getCodec();
+
+    boolean isSupportedConversion(ValueType<?> from, ValueType<?> to);
+
+    <F,T> CompletableFuture<C> configure(ServerPlayerEntity player, ValueType<F> from, ValueType<T> to, @Nullable C old);
+}

src/main/java/io/github/skippyall/minions/program/instruction/ConfiguredInstruction.java

@@ -11,6 +11,10 @@ import net.minecraft.storage.ReadView;
 import net.minecraft.storage.WriteView;
 import org.jetbrains.annotations.Nullable;
 
+/**
+ * Holds an instruction, its configuration and is responsible for executing the instruction
+ * @param <R> The runtime holding this object
+ */
 public class ConfiguredInstruction<R extends InstructionRuntime<R>> {
     private final InstructionType<R> instruction;
     private final ValueSupplierList<R> arguments;
@@ -48,7 +52,7 @@ public class ConfiguredInstruction<R extends InstructionRuntime<R>> {
     }
 
     public boolean canRun() {
-        return instruction != null && arguments != null && arguments.hasArgumentForAll(instruction.getParameters());
+        return instruction != null && arguments != null && arguments.checkRun(instruction).isSuccess();
     }
 
     public boolean isRunning() {

src/main/java/io/github/skippyall/minions/program/instruction/InstructionType.java

@@ -9,6 +9,11 @@ import java.util.Collection;
 import java.util.List;
 import java.util.function.Supplier;
 
+/**
+ * Defines the semantics of an instruction and creates {@link InstructionExecution}
+ * InstructionTypes for minions can be registered to {@link io.github.skippyall.minions.registration.MinionRegistries#INSTRUCTION_TYPES}
+ * @param <R> The runtime that this instruction can be executed in
+ */
 public class InstructionType<R extends InstructionRuntime<R>> {
     private final List<Parameter<?>> parameters;
     private final List<Parameter<?>> returnParameters;

src/main/java/io/github/skippyall/minions/program/supplier/Parameter.java

@@ -1,6 +1,7 @@
 package io.github.skippyall.minions.program.supplier;
 
 import com.mojang.serialization.Codec;
+import com.mojang.serialization.MapCodec;
 import com.mojang.serialization.codecs.RecordCodecBuilder;
 import io.github.skippyall.minions.program.value.SimpleValueType;
 import io.github.skippyall.minions.registration.MinionRegistries;
@@ -8,11 +9,12 @@ import io.github.skippyall.minions.program.value.ValueType;
 import org.jetbrains.annotations.Nullable;
 
 public record Parameter<T>(String name, ValueType<T> type) {
-    public static final Codec<Parameter<?>> CODEC = RecordCodecBuilder.create(instance ->
+    public static final MapCodec<Parameter<?>> MAP_CODEC = RecordCodecBuilder.mapCodec(instance ->
             instance.group(
                     Codec.STRING.fieldOf("name").forGetter(Parameter::name),
                     MinionRegistries.VALUE_TYPES.getCodec().fieldOf("type").forGetter(Parameter::type)
             ).apply(instance, Parameter::new));
+    public static final Codec<Parameter<?>> CODEC = MAP_CODEC.codec();
 
     public <U> @Nullable Parameter<U> cast(ValueType<U> type) {
         if(this.type == type) {

src/main/java/io/github/skippyall/minions/program/supplier/ValueSupplierList.java

@@ -1,69 +1,100 @@
 package io.github.skippyall.minions.program.supplier;
 
 import com.mojang.serialization.Codec;
+import com.mojang.serialization.MapCodec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
+import io.github.skippyall.minions.gui.input.Result;
 import io.github.skippyall.minions.program.InstructionRuntime;
-import io.github.skippyall.minions.program.value.Cast;
-import io.github.skippyall.minions.program.value.Casts;
+import io.github.skippyall.minions.program.conversion.Cast;
+import io.github.skippyall.minions.program.conversion.Casts;
+import io.github.skippyall.minions.program.conversion.ValueConverter;
+import io.github.skippyall.minions.program.instruction.InstructionType;
+import io.github.skippyall.minions.program.value.ValueType;
+import net.minecraft.text.Text;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.function.Consumer;
 
 public class ValueSupplierList<R extends InstructionRuntime<R>> {
-    private final Map<String, ValueSupplier<?, R>> arguments;
+    private final Map<Parameter<?>, ValueSupplierEntry<?,?,R>> arguments = new HashMap<>();
     private final List<Consumer<Parameter<?>>> changeListeners = new ArrayList<>();
 
     public ValueSupplierList() {
-        arguments = new HashMap<>();
+
     }
 
-    public ValueSupplierList(Map<String, ValueSupplier<?,R>> arguments) {
-        this.arguments = new HashMap<>(arguments);
+    private ValueSupplierList(List<ValueSupplierEntry<?,?,R>> arguments) {
+        for(ValueSupplierEntry<?,?,R> argument : arguments) {
+            this.arguments.put(argument.parameter, argument);
+        }
     }
 
-    public <F, T> T getValue(Parameter<T> parameter, R runtime) {
-        //noinspection unchecked
-        ValueSupplier<F,R> valueSupplier = (ValueSupplier<F, R>) getArgument(parameter);
-        if(valueSupplier == null) {
-            return null;
+    private List<ValueSupplierEntry<?,?,R>> toCodecList() {
+        return List.copyOf(arguments.values());
     }
 
-        if(valueSupplier.getValueType() == parameter.type()) {
-            return valueSupplier.cast(parameter.type()).resolve(runtime);
-        } else {
-            Cast<F,T> cast = Casts.getCast(valueSupplier.getValueType(), parameter.type());
-            if(cast != null) {
-                return cast.cast(valueSupplier.resolve(runtime));
-            }
-        }
-        return null;
+    public <T> T getValue(Parameter<T> parameter, R runtime) {
+        ValueSupplierEntry<?,?,R> entry = getEntry(parameter);
+        return parameter.type().checkedCast(entry.getValue(runtime));
     }
 
     public ValueSupplier<?,R> getArgument(Parameter<?> parameter) {
-        return arguments.get(parameter.name());
+        if(arguments.containsKey(parameter)) {
+            return arguments.get(parameter).supplier;
+        } else {
+            return null;
+        }
     }
 
-    public <T> void setArgument(Parameter<T> parameter, ValueSupplier<?,R> valueSupplier) {
-        arguments.put(parameter.name(), valueSupplier);
+    public <P> ValueSupplierEntry<P,?,R> getEntry(Parameter<P> parameter) {
+        //noinspection unchecked
+        return (ValueSupplierEntry<P, ?, R>) arguments.get(parameter);
+    }
+
+    public void setArgument(Parameter<?> parameter, ValueSupplier<?,R> valueSupplier) {
+        arguments.put(parameter, new ValueSupplierEntry<>(parameter, valueSupplier, List.of()));
+        onChange(parameter);
+    }
+
+    public void setArgument(Parameter<?> parameter, ValueSupplier<?,R> valueSupplier, List<ValueConverter<?, ?>> converter) {
+        arguments.put(parameter, new ValueSupplierEntry<>(parameter, valueSupplier, converter));
         onChange(parameter);
     }
 
     public boolean hasArgumentFor(Parameter<?> parameter) {
-        return arguments.containsKey(parameter.name());
+        return arguments.containsKey(parameter);
     }
 
-    public boolean hasArgumentForAll(Collection<Parameter<?>> checkParameters) {
+    public Result<@Nullable Void, Text> checkHasArguments(Collection<Parameter<?>> checkParameters) {
         for(Parameter<?> parameter : checkParameters) {
             if(!hasArgumentFor(parameter)) {
-                return false;
+                return new Result.Error<>(Text.translatable("minions.gui.instruction.check.argument_not_set", parameter.name()));
             }
         }
-        return true;
+        return new Result.Success<>(null);
     }
 
+    public Result<@Nullable Void, Text> checkRun(InstructionType<R> instructionType) {
+        Result<@Nullable Void, Text> checkResult = checkHasArguments(instructionType.getParameters());
+        if(!checkResult.isSuccess()) {
+            return checkResult;
+        }
+
+        for(ValueSupplierEntry<?,?,R> entry : arguments.values()) {
+            checkResult = entry.check();
+            if(!checkResult.isSuccess()) {
+                return checkResult;
+            }
+        }
+        return new Result.Success<>(null);
+    }
 
     private void onChange(Parameter<?> parameter) {
         for (Consumer<Parameter<?>> listener : changeListeners) {
@@ -80,7 +111,98 @@ public class ValueSupplierList<R extends InstructionRuntime<R>> {
     }
 
     public static <R extends InstructionRuntime<R>> Codec<ValueSupplierList<R>> getCodec(Codec<ValueSupplier<?,R>> argumentCodec) {
-        return Codec.unboundedMap(Codec.STRING, argumentCodec)
-                .xmap(ValueSupplierList::new, list -> list.arguments);
+        return ValueSupplierEntry.getCodec(argumentCodec)
+                .codec()
+                .listOf()
+                .xmap(ValueSupplierList::new, ValueSupplierList::toCodecList);
+    }
+
+    public static class ValueSupplierEntry<S, P, R extends InstructionRuntime<R>> {
+        private Parameter<P> parameter;
+        private ValueSupplier<S,R> supplier;
+        private List<ValueConverter<?,?>> converters;
+
+        public ValueSupplierEntry(Parameter<P> parameter, ValueSupplier<S, R> supplier, Collection<ValueConverter<?, ?>> converters) {
+            this.parameter = parameter;
+            this.supplier = supplier;
+            this.converters = new LinkedList<>(converters);
+        }
+
+        public List<ValueConverter<?,?>> getConverters() {
+            return converters;
+        }
+
+        public Parameter<P> getParameter() {
+            return parameter;
+        }
+
+        public ValueSupplier<S, R> getSupplier() {
+            return supplier;
+        }
+
+        public void setParameter(Parameter<P> parameter) {
+            this.parameter = parameter;
+        }
+
+        public void setSupplier(ValueSupplier<S, R> supplier) {
+            this.supplier = supplier;
+        }
+
+        public void setConverters(List<ValueConverter<?, ?>> converters) {
+            this.converters = converters;
+        }
+
+        public @Nullable P getValue(R runtime) {
+            S value = supplier.resolve(runtime);
+            Iterator<ValueConverter<?,?>> iterator = converters.iterator();
+            Object convertedValue = convert(supplier.getValueType(), value, iterator.next(), iterator);
+
+            return finalCast(convertedValue);
+        }
+
+        private <F> @Nullable P finalCast(Object value) {
+            //noinspection unchecked
+            ValueType<F> lastConvertedType = (ValueType<F>) converters.getLast().getTo();
+            F convertedValue = lastConvertedType.checkedCast(value);
+            if(convertedValue == null) {
+                return null;
+            }
+
+            Cast<F,P> cast = Casts.getCast(lastConvertedType, parameter.type());
+            if(cast != null) {
+                return cast.cast(convertedValue);
+            }
+            return null;
+        }
+
+        private <F,I,T> @Nullable Object convert(ValueType<F> fromType, F from, ValueConverter<I,T> converter, Iterator<ValueConverter<?,?>> iterator) {
+            Cast<F, I> cast = Casts.getCast(fromType, converter.getFrom());
+            if(cast == null) {
+                return null;
+            }
+            I inter = cast.cast(from);
+            if(inter == null) {
+                return null;
+            }
+            T to = converter.convert(inter);
+
+            if(iterator.hasNext() && to != null) {
+                return convert(converter.getTo(), to, iterator.next(), iterator);
+            } else {
+                return to;
+            }
+        }
+
+        public Result<@Nullable Void, Text> check() {
+            return new Result.Success<>(null);
+        }
+
+        public static <R extends InstructionRuntime<R>> MapCodec<ValueSupplierEntry<?,?,R>> getCodec(Codec<ValueSupplier<?,R>> argumentCodec) {
+            return RecordCodecBuilder.mapCodec(instance -> instance.group(
+                    Parameter.CODEC.fieldOf("parameter").forGetter(e -> e.parameter),
+                    argumentCodec.fieldOf("argument").forGetter(e -> e.supplier),
+                    ValueConverter.CODEC.listOf().optionalFieldOf("converter", List.of()).forGetter(e -> e.converters)
+            ).apply(instance, ValueSupplierEntry::new));
+        }
     }
 }

src/main/java/io/github/skippyall/minions/program/supplier/ValueSupplierType.java

@@ -11,5 +11,5 @@ import java.util.concurrent.CompletableFuture;
 public abstract class ValueSupplierType<R extends InstructionRuntime<R>> {
     public abstract <T> Codec<? extends ValueSupplier<T,R>> getCodec(ValueType<T> type);
 
-    public abstract <T> CompletableFuture<? extends ValueSupplier<T,R>> openConfiguration(ServerPlayerEntity player, ValueType<T> valueType, @Nullable ValueSupplier<T,R> previous);
+    public abstract <T> CompletableFuture<? extends ValueSupplier<?,R>> openConfiguration(ServerPlayerEntity player, ValueType<T> valueType, @Nullable ValueSupplier<T,R> previous);
 }

src/main/java/io/github/skippyall/minions/program/value/LongValueType.java

@@ -1,29 +0,0 @@
-package io.github.skippyall.minions.program.value;
-
-import com.mojang.serialization.Codec;
-import net.minecraft.server.network.ServerPlayerEntity;
-import net.minecraft.text.Text;
-
-import java.util.concurrent.CompletableFuture;
-
-public class LongValueType implements ValueType<Long> {
-    @Override
-    public CompletableFuture<Long> openValueDialog(ServerPlayerEntity player, Long previousValue) {
-        return null;
-    }
-
-    @Override
-    public Text getDisplayText(Long value) {
-        return null;
-    }
-
-    @Override
-    public Codec<Long> codec() {
-        return null;
-    }
-
-    @Override
-    public Long defaultValue() {
-        return 0L;
-    }
-}

src/main/java/io/github/skippyall/minions/program/value/SimpleValueType.java

@@ -9,7 +9,7 @@ import java.util.concurrent.CompletableFuture;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 
-public record SimpleValueType<T>(Codec<T> codec, T defaultValue, BiFunction<ServerPlayerEntity, T, CompletableFuture<T>> valueDialogOpener, Function<T, Text> textDisplay) implements ValueType<T> {
+public record SimpleValueType<T>(Codec<T> codec, T defaultValue, Function<Object, T> checkedCast, BiFunction<ServerPlayerEntity, T, CompletableFuture<T>> valueDialogOpener, Function<T, Text> textDisplay) implements ValueType<T> {
     @Override
     public CompletableFuture<T> openValueDialog(ServerPlayerEntity player, T previousValue) {
         return valueDialogOpener.apply(player, previousValue);
@@ -19,4 +19,9 @@ public record SimpleValueType<T>(Codec<T> codec, T defaultValue, BiFunction<Serv
     public Text getDisplayText(T value) {
         return textDisplay.apply(value);
     }
+
+    @Override
+    public T checkedCast(Object value) {
+        return checkedCast.apply(value);
+    }
 }

src/main/java/io/github/skippyall/minions/program/value/ValueType.java

@@ -17,4 +17,10 @@ public interface ValueType<T> {
     Codec<T> codec();
 
     T defaultValue();
+
+    @Nullable T checkedCast(Object value);
+
+    default boolean isOf(Object value) {
+        return checkedCast(value) != null;
+    }
 }

src/main/java/io/github/skippyall/minions/program/value/conversion/ValueConverter.java

@@ -1,13 +0,0 @@
-package io.github.skippyall.minions.program.value.conversion;
-
-import io.github.skippyall.minions.program.value.ValueType;
-
-public interface ValueConverter<F,T> {
-    T convert(F from);
-
-    ValueType<F> getFrom();
-
-    ValueType<T> getTo();
-
-    ValueConverterType<?> getType();
-}

src/main/java/io/github/skippyall/minions/program/value/conversion/ValueConverterType.java

@@ -1,18 +0,0 @@
-package io.github.skippyall.minions.program.value.conversion;
-
-import com.mojang.serialization.Codec;
-import io.github.skippyall.minions.program.value.ValueType;
-import net.minecraft.server.network.ServerPlayerEntity;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.concurrent.CompletableFuture;
-
-public interface ValueConverterType<C extends ValueConverter<?,?>> {
-    Codec<C> getCodec(ValueType<?> from, ValueType<?> to);
-
-    boolean isSupportedFromType(ValueType<?> type);
-
-    boolean isSupportedToType(ValueType<?> type);
-
-    CompletableFuture<C> configure(ServerPlayerEntity player, ValueType<?> from, ValueType<?> to, @Nullable C old);
-}

src/main/java/io/github/skippyall/minions/registration/MinionComponentTypes.java

@@ -16,7 +16,7 @@ import java.util.UUID;
 public class MinionComponentTypes {
     public static final ComponentType<UUID> MINION_DATA = register("minion_data", ComponentType.<UUID>builder().codec(Uuids.CODEC).build());
     public static final ComponentType<MinionModule> MODULE = register("minion_module", ComponentType.<MinionModule>builder().codec(MinionModule.CODEC).build());
-    public static final ComponentType<Clipboard> REFERENCE = ComponentType.<Clipboard>builder().codec(Clipboard.CODEC).build();
+    public static final ComponentType<Clipboard> REFERENCE = register("reference", ComponentType.<Clipboard>builder().codec(Clipboard.CODEC).build());
 
     private static <T extends ComponentType<?>> T register(String name, T type) {
         Registry.register(Registries.DATA_COMPONENT_TYPE, Identifier.of(Minions.MOD_ID, name), type);

src/main/java/io/github/skippyall/minions/registration/MinionRegistration.java

@@ -15,6 +15,7 @@ public class MinionRegistration {
         MinionListeners.register();
         SkinProviders.register();
         SpecialAbilities.register();
+        ValueConverters.register();
         ValueSuppliers.register();
         ValueTypes.register();
 

src/main/java/io/github/skippyall/minions/registration/MinionRegistries.java

@@ -17,6 +17,7 @@ import io.github.skippyall.minions.program.instruction.InstructionType;
 import io.github.skippyall.minions.program.consumer.ValueConsumerType;
 import io.github.skippyall.minions.program.value.ValueType;
 import io.github.skippyall.minions.clipboard.Clipboard;
+import io.github.skippyall.minions.program.conversion.ValueConverterType;
 import net.fabricmc.fabric.api.event.registry.DynamicRegistries;
 import net.fabricmc.fabric.api.event.registry.FabricRegistryBuilder;
 import net.fabricmc.fabric.api.event.registry.RegistryAttribute;
@@ -29,6 +30,8 @@ public class MinionRegistries {
     public static final Registry<ValueSupplierType<MinionRuntime>> VALUE_SUPPLIER_TYPES = registry("value_supplier_type");
     public static final Registry<ValueConsumerType<MinionRuntime>> VALUE_CONSUMER_TYPES = registry("value_consumer_type");
     public static final Registry<InstructionType<MinionRuntime>> INSTRUCTION_TYPES = registry("instruction_type");
+    public static final Registry<ValueConverterType<?>> VALUE_CONVERTER_TYPES = registry("value_converter_type");
+
     public static final Registry<SkinProvider> SKIN_PROVIDERS = registry("skin_provider");
     public static final Registry<Codec<? extends GuiDisplay>> GUI_DISPLAY_TYPE = registry("gui_display_type");
     public static final Registry<Codec<? extends ConfiguredInstructionListener>> INSTRUCTION_LISTENER_CODECS = registry("instruction_listener_codec");

src/main/java/io/github/skippyall/minions/registration/ValueConverters.java

@@ -0,0 +1,19 @@
+package io.github.skippyall.minions.registration;
+
+import io.github.skippyall.minions.Minions;
+import io.github.skippyall.minions.program.conversion.CastConverter;
+import io.github.skippyall.minions.program.conversion.EqualityConverter;
+import io.github.skippyall.minions.program.conversion.ValueConverterType;
+import net.minecraft.registry.Registry;
+import net.minecraft.util.Identifier;
+
+public class ValueConverters {
+    public static final EqualityConverter.EqualityConverterType EQUALITY_CONVERTER = register("equality_converter", new EqualityConverter.EqualityConverterType());
+    public static final CastConverter.Type CAST_CONVERTER = register("cast_converter", new CastConverter.Type());
+
+    private static <T extends ValueConverterType<?>> T register(String name, T type) {
+        return Registry.register(MinionRegistries.VALUE_CONVERTER_TYPES, Identifier.of(Minions.MOD_ID, name), type);
+    }
+
+    public static void register() {}
+}

src/main/java/io/github/skippyall/minions/registration/ValueTypes.java

@@ -8,85 +8,88 @@ import io.github.skippyall.minions.gui.input.ChoiceInput;
 import io.github.skippyall.minions.gui.input.TextInput;
 import io.github.skippyall.minions.minion.program.instruction.move.TurnDirection;
 import net.minecraft.registry.Registry;
-import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.Identifier;
 
-import java.util.concurrent.CompletableFuture;
-import java.util.function.BiFunction;
-import java.util.function.Function;
-
 public class ValueTypes {
-    public static ValueType<Long> LONG = registerSimple(
+    public static ValueType<Long> LONG = register(
             "long",
+            new SimpleValueType<>(
                     Codec.LONG,
                     0L,
+                    o -> o instanceof Long l ? l : null,
                     (player, oldValue) -> TextInput.inputLong(
                             player,
                             Text.literal("Integer"),
                             String.valueOf(oldValue)
                     ),
                     value -> Text.literal(value.toString())
+            )
     );
 
-    public static ValueType<Double> DOUBLE = registerSimple(
+    public static ValueType<Double> DOUBLE = register(
             "double",
+            new SimpleValueType<>(
                     Codec.DOUBLE,
                     0D,
+                    o -> o instanceof Double d ? d : null,
                     (player, oldValue) -> TextInput.inputDouble(
                             player,
                             Text.literal("Number"),
                             String.valueOf(oldValue)
                     ),
                     value -> Text.literal(value.toString())
+            )
     );
 
-    public static ValueType<Boolean> BOOLEAN = registerSimple(
+    public static ValueType<Boolean> BOOLEAN = register(
             "boolean",
+            new SimpleValueType<>(
                     Codec.BOOL,
                     false,
+                    o -> o instanceof Boolean b ? b : null,
                     ChoiceInput.inputBoolean(Text.literal("")),
                     value -> Text.literal(value.toString())
+            )
     );
 
-    public static ValueType<String> STRING = registerSimple(
+    public static ValueType<String> STRING = register(
             "string",
+            new SimpleValueType<>(
                     Codec.STRING,
                     "",
+                    o -> o instanceof String s ? s : null,
                     ((player, oldValue) -> TextInput.inputString(
                             player,
                             Text.literal("Text"),
                             oldValue)
                     ),
                     value -> Text.literal("\"" + value + "\"")
-    );
-
-    public static ValueType<TurnDirection> TURN_DIRECTION = registerSimple(
-            "turn_direction",
-            TurnDirection.CODEC,
-            TurnDirection.RIGHT,
-            ChoiceInput.createDialogOpener(TurnDirection.values()),
-            value -> Text.literal(value.name)
-    );
-
-    private static <T> ValueType<T> registerSimple(
-            String id,
-            Codec<T> codec,
-            T defaultValue,
-            BiFunction<ServerPlayerEntity, T, CompletableFuture<T>> valueDialogOpener,
-            Function<T, Text> textDisplay
-    ) {
-        Identifier identifier = Identifier.of(Minions.MOD_ID, id);
-        return Registry.register(
-                MinionRegistries.VALUE_TYPES,
-                identifier,
-                new SimpleValueType<>(
-                        codec,
-                        defaultValue,
-                        valueDialogOpener,
-                        textDisplay
             )
     );
+
+    public static ValueType<TurnDirection> TURN_DIRECTION = register(
+            "turn_direction",
+            new SimpleValueType<>(
+                    TurnDirection.CODEC,
+                    TurnDirection.RIGHT,
+                    o -> o instanceof TurnDirection d ? d : null,
+                    ChoiceInput.createDialogOpener(TurnDirection.values()),
+                    value -> Text.literal(value.name)
+            )
+    );
+
+    private static <T extends ValueType<?>> T register(
+            String id,
+            T type
+    ) {
+        Identifier identifier = Identifier.of(Minions.MOD_ID, id);
+        Registry.register(
+                MinionRegistries.VALUE_TYPES,
+                identifier,
+                type
+        );
+        return type;
     }
 
     public static void register() {}

src/main/resources/data/minions/lang/en_us.json

@@ -8,6 +8,7 @@
   "minions.gui.ok": "OK",
   "minions.gui.confirm": "Confirm",
   "minions.gui.abort": "Abort",
+  "minions.gui.back": "Back",
 
   "minions.gui.look.skin.name": "Name",
   "minions.gui.look.skin.name.title": "Enter a player name",
@@ -39,6 +40,8 @@
   "minions.gui.instruction.parameter": "%s: %s",
   "minions.gui.instruction.argument": "Argument: %s",
 
+  "minions.gui.instruction.check.argument_not_set": "Argument %s is not set",
+
   "minions.command.input.int.fail": "Not an integer",
   "minions.command.input.float.fail": "Not a number",
   "minions.command.action.details": "Set how to %s",