v1.0 - That's a wrap, folks.

Not really sure what there would be to update, tbh.

Features:
- Read the title of the mod, buddy.

gradle.properties

@@ -11,6 +11,6 @@ mod_menu_version=2.0.5
 halplibe_version=3.5.2
 
 # Mod
-mod_version=1.0.0
-mod_group=turniplabs
-mod_name=examplemod
+mod_version=1.0
+mod_group=midnadimple
+mod_name=gamerulesmenu

src/main/java/midnadimple/gamerulesmenu/GamerulesMenu.java

@@ -0,0 +1,42 @@
+package midnadimple.gamerulesmenu;
+
+import net.fabricmc.api.ModInitializer;
+import net.minecraft.core.data.gamerule.GameRule;
+import net.minecraft.core.data.gamerule.GameRuleCollection;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import turniplabs.halplibe.util.GameStartEntrypoint;
+import turniplabs.halplibe.util.RecipeEntrypoint;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class GamerulesMenu implements ModInitializer, GameStartEntrypoint, RecipeEntrypoint {
+    public static final String MOD_ID = "gamerulesmenu";
+    public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
+
+	public static GameRuleCollection gameRuleCollection = new GameRuleCollection();
+	public static boolean GAMERULE_COLLECTION_EMPTY = true;
+	public static final List<GameRule<?>> gameRuleList = new ArrayList<>();
+
+	@Override
+    public void onInitialize() {
+        LOGGER.info("GamerulesMenu initialized.");
+    }
+
+	@Override
+	public void beforeGameStart() {
+
+	}
+
+	@Override
+	public void afterGameStart() {
+
+	}
+
+	@Override
+	public void onRecipesReady() {
+
+	}
+}

src/main/java/midnadimple/gamerulesmenu/gui/NewGamerulesMenu.java

@@ -0,0 +1,137 @@
+package midnadimple.gamerulesmenu.gui;
+
+import midnadimple.gamerulesmenu.GamerulesMenu;
+import midnadimple.gamerulesmenu.interfaces.IGuiCreateWorld;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.client.render.Tessellator;
+import net.minecraft.core.data.gamerule.GameRule;
+import net.minecraft.core.data.gamerule.GameRuleBoolean;
+import net.minecraft.core.data.registry.Registries;
+import net.minecraft.core.lang.I18n;
+import net.minecraft.core.sound.SoundCategory;
+import org.lwjgl.input.Mouse;
+import org.lwjgl.opengl.GL11;
+
+import java.util.LinkedHashMap;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class NewGamerulesMenu extends GuiScreen {
+	private static final I18n loc = I18n.getInstance();
+	private final GuiScreen prevGuiScreen;
+	private boolean cheatsEnabled;
+
+	private GuiButton cheatsButton;
+	private final LinkedHashMap<GuiButton, Boolean> gameRuleButtons = new LinkedHashMap<>();
+
+	private static final int BUTTON_BORDER_OFFSET = 40;
+	private float scrollFloat = 0.0f;
+
+	public NewGamerulesMenu(GuiScreen guiScreen, boolean cheatsEnabled) {
+		this.prevGuiScreen = guiScreen;
+		this.cheatsEnabled = cheatsEnabled;
+	}
+
+	@Override
+	public void init() {
+		controlList.add(this.cheatsButton = new GuiButton(0, this.width / 2 - 100, BUTTON_BORDER_OFFSET, 200, 20, ""));
+
+		int i = 2;
+		for (GameRule<?> gameRule : Registries.GAME_RULES) {
+			GuiButton guiButton = new GuiButton(i, this.width - BUTTON_BORDER_OFFSET - 60 , (int) (2 * BUTTON_BORDER_OFFSET + (i - 2) * BUTTON_BORDER_OFFSET * 0.75 - scrollFloat), 50, 20, "");
+			controlList.add(guiButton);
+
+			Boolean value;
+			if (GamerulesMenu.GAMERULE_COLLECTION_EMPTY) {
+				GamerulesMenu.gameRuleList.add(gameRule);
+				value = (Boolean) gameRule.getDefaultValue();
+			} else {
+				value = (Boolean) GamerulesMenu.gameRuleCollection.getValue(gameRule);
+			}
+			gameRuleButtons.put(guiButton, value);
+			i++;
+		}
+		if (GamerulesMenu.GAMERULE_COLLECTION_EMPTY) {
+			GamerulesMenu.GAMERULE_COLLECTION_EMPTY = false;
+		}
+
+		controlList.add(new GuiButton(1, this.width / 2 - 100, this.height - BUTTON_BORDER_OFFSET, 200, 20, loc.translateKey("gamerulesmenu.goback")));
+
+		updateButtons();
+	}
+
+	private void updateButtons() {
+		cheatsButton.displayString = loc.translateKey("gamerulesmenu.cheats") + " ";
+		if (cheatsEnabled) {
+			cheatsButton.displayString += loc.translateKey("gamerulesmenu.on");
+		} else {
+			cheatsButton.displayString += loc.translateKey("gamerulesmenu.off");
+		}
+
+		gameRuleButtons.forEach((gameRuleButton, gameRuleButtonValue) -> {
+			if (gameRuleButtonValue) {
+				gameRuleButton.displayString = loc.translateKey("gamerulesmenu.on");
+			} else {
+				gameRuleButton.displayString = loc.translateKey("gamerulesmenu.off");
+			}
+		});
+	}
+
+	@Override
+	public void drawScreen(int mouseX, int mouseY, float partialTick) {
+		GL11.glDisable(2896);
+		GL11.glDisable(2912);
+		Tessellator tessellator = Tessellator.instance;
+		GL11.glBindTexture(3553, this.mc.renderEngine.getTexture("/gui/titlebackground.png"));
+		GL11.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+		float f = 32.0f;
+		tessellator.startDrawingQuads();
+		tessellator.setColorOpaque_I(0x404040);
+		tessellator.addVertexWithUV(0.0, this.height, 0.0, 0.0, (float)this.height / f);
+		tessellator.addVertexWithUV(this.width, this.height, 0.0, (float)this.width / f, (float)this.height / f);
+		tessellator.addVertexWithUV(this.width, 0.0, 0.0, (float)this.width / f, 0.0);
+		tessellator.addVertexWithUV(0.0, 0.0, 0.0, 0.0, 0.0);
+		tessellator.draw();
+
+		// Title
+		drawStringCentered(fontRenderer, loc.translateKey("gamerulesmenu.title"), width / 2, 20, 0xFFFFFF);
+
+		// Gamerules
+		scrollFloat = Math.max(scrollFloat + (float) Mouse.getDWheel() / -5.0F, 0);
+		scrollFloat = Math.min(scrollFloat, 25 * gameRuleButtons.size());
+
+		AtomicInteger i = new AtomicInteger();
+		for (GameRule<?> gameRule : GamerulesMenu.gameRuleList) {
+			drawStringCentered(fontRenderer, gameRule.getKey(), BUTTON_BORDER_OFFSET + 60, (int) (2.15 * BUTTON_BORDER_OFFSET + i.get() * BUTTON_BORDER_OFFSET * 0.75 - scrollFloat), 0xFFFFFF);
+			i.getAndIncrement();
+		}
+
+		i.set(0);
+		for (GuiButton gameruleButton : gameRuleButtons.keySet()) {
+			gameruleButton.yPosition =((int) (2 * BUTTON_BORDER_OFFSET + i.getAndIncrement() * BUTTON_BORDER_OFFSET * 0.75 - scrollFloat));
+		}
+
+		super.drawScreen(mouseX, mouseY, partialTick);
+		updateButtons();
+	}
+
+	@Override
+	protected void buttonReleased(GuiButton button) {
+		if (button.id == 1) {
+			((IGuiCreateWorld) prevGuiScreen).gamerules_menu$setCheatsEnabled(cheatsEnabled);
+			mc.displayGuiScreen(prevGuiScreen);
+		} else if (button.id == 0) {
+			cheatsEnabled = !cheatsEnabled;
+			updateButtons();
+		} else {
+			for (GuiButton gameruleButton : gameRuleButtons.keySet()) {
+				if (button.id == gameruleButton.id) {
+					gameRuleButtons.put(gameruleButton, !gameRuleButtons.get(gameruleButton));
+					GamerulesMenu.gameRuleCollection.setValue((GameRuleBoolean) GamerulesMenu.gameRuleList.get(button.id-2), gameRuleButtons.get(gameruleButton));
+					updateButtons();
+				}
+			}
+		}
+		this.mc.sndManager.playSound("random.click", SoundCategory.GUI_SOUNDS, 1.0F, 1.0F);
+	}
+}

src/main/java/midnadimple/gamerulesmenu/interfaces/IGuiCreateWorld.java

@@ -0,0 +1,5 @@
+package midnadimple.gamerulesmenu.interfaces;
+
+public interface IGuiCreateWorld {
+	void gamerules_menu$setCheatsEnabled(boolean cheatsEnabled);
+}

src/main/java/midnadimple/gamerulesmenu/mixin/GuiCreateWorldMixin.java

@@ -0,0 +1,58 @@
+package midnadimple.gamerulesmenu.mixin;
+
+import midnadimple.gamerulesmenu.GamerulesMenu;
+import midnadimple.gamerulesmenu.gui.NewGamerulesMenu;
+import midnadimple.gamerulesmenu.interfaces.IGuiCreateWorld;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiButton;
+import net.minecraft.core.player.gamemode.Gamemode;
+import org.objectweb.asm.Opcodes;
+import net.minecraft.client.gui.GuiCreateWorld;
+import net.minecraft.client.gui.GuiScreen;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(value = GuiCreateWorld.class, remap = false)
+public class GuiCreateWorldMixin extends GuiScreen implements IGuiCreateWorld {
+	@Shadow
+	private boolean cheatsEnabled;
+	@Shadow
+	private Gamemode selectedGamemode;
+
+	@Unique
+	protected Minecraft mc = Minecraft.getMinecraft(Minecraft.class);
+
+	@Redirect(method = "buttonPressed", at = @At(value = "FIELD", target = "Lnet/minecraft/client/gui/GuiCreateWorld;cheatsEnabled:Z", opcode = Opcodes.PUTFIELD))
+	private void cheatDisabler(GuiCreateWorld guiCreateWorld, boolean value) {
+	}
+
+	@Inject(method = "buttonPressed", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/GuiCreateWorld;updateButtons()V"))
+	private void openGamerulesMenu(GuiButton button, CallbackInfo ci) {
+		// id 3 = cheats button
+		if (button.id == 3) {
+			mc.displayGuiScreen(new NewGamerulesMenu(this, cheatsEnabled));
+		}
+	}
+
+	@Inject(method = "updateButtons", at = @At("HEAD"))
+	private void creativeCheatsEnabler(CallbackInfo ci) {
+		if (selectedGamemode == Gamemode.creative) {
+			cheatsEnabled = true;
+		}
+	}
+
+	@Inject(method = "buttonPressed", at = @At(value = "INVOKE", target = "Lnet/minecraft/core/world/save/LevelData;setCheatsEnabled(Z)V"))
+	private void saveGamerules(GuiButton button, CallbackInfo ci) {
+		mc.theWorld.getLevelData().getGameRules().setValues(GamerulesMenu.gameRuleCollection);
+	}
+
+	@Override
+	public void gamerules_menu$setCheatsEnabled(boolean cheatsEnabled) {
+		this.cheatsEnabled = cheatsEnabled;
+	}
+}

src/main/java/turniplabs/examplemod/ExampleMod.java

@@ -1,33 +0,0 @@
-package turniplabs.examplemod;
-
-import net.fabricmc.api.ModInitializer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import turniplabs.halplibe.helper.BlockBuilder;
-import turniplabs.halplibe.util.GameStartEntrypoint;
-import turniplabs.halplibe.util.RecipeEntrypoint;
-
-
-public class ExampleMod implements ModInitializer, GameStartEntrypoint, RecipeEntrypoint {
-    public static final String MOD_ID = "examplemod";
-    public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
-    @Override
-    public void onInitialize() {
-        LOGGER.info("ExampleMod initialized.");
-    }
-
-	@Override
-	public void beforeGameStart() {
-
-	}
-
-	@Override
-	public void afterGameStart() {
-
-	}
-
-	@Override
-	public void onRecipesReady() {
-
-	}
-}

src/main/resources/examplemod.mixins.json

@@ -1,13 +0,0 @@
-{
-    "required": true,
-    "minVersion": "0.8",
-    "package": "turniplabs.examplemod.mixin",
-    "compatibilityLevel": "JAVA_8",
-    "mixins": [
-    ],
-    "client": [
-    ],
-    "injectors": {
-        "defaultRequire": 1
-  }
-}

src/main/resources/fabric.mod.json

@@ -1,16 +1,16 @@
 {
   "schemaVersion": 1,
-  "id": "examplemod",
+  "id": "gamerulesmenu",
   "version": "${version}",
 
-  "name": "Example Mod",
-  "description": "This mod aims to help new BTA modders.",
+  "name": "Gamerules Menu",
+  "description": "This mod adds a menu for configuring Gamerules when creating worlds",
   "authors": [
-    "Turnip Labs"
+    "midnadimple"
   ],
   "contact": {
     "homepage": "",
-    "sources": ""
+    "sources": "https://github.com/midnadimple/gamesrules-menu"
   },
 
 	"icon": "icon.png",
@@ -19,20 +19,20 @@
   "environment": "*",
   "entrypoints": {
     "main": [
-			"turniplabs.examplemod.ExampleMod"
+			"midnadimple.gamerulesmenu.GamerulesMenu"
     ],
 		"beforeGameStart": [
-			"turniplabs.examplemod.ExampleMod"
+			"midnadimple.gamerulesmenu.GamerulesMenu"
 		],
 		"afterGameStart": [
-			"turniplabs.examplemod.ExampleMod"
+			"midnadimple.gamerulesmenu.GamerulesMenu"
 		],
 		"recipesReady": [
-			"turniplabs.examplemod.ExampleMod"
+			"midnadimple.gamerulesmenu.GamerulesMenu"
 		]
 	},
   "mixins": [
-      "examplemod.mixins.json"
+      "gamerulesmenu.mixins.json"
   ],
 
   "depends": {

src/main/resources/gamerulesmenu.mixins.json

@@ -0,0 +1,14 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "midnadimple.gamerulesmenu.mixin",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": [
+    "GuiCreateWorldMixin"
+  ],
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

src/main/resources/lang/gamerulesmenu/en_US.lang

@@ -0,0 +1,6 @@
+gui.create_world.button.cheats=Gamerules...
+gamerulesmenu.cheats=Cheats:
+gamerulesmenu.on=ON
+gamerulesmenu.off=OFF
+gamerulesmenu.goback=Go Back
+gamerulesmenu.title=Gamerules