Hello Guys,

 

My problem is when i try to open my Achievement Page it crashes:

 

 

Description: Rendering screen

 

java.lang.NullPointerException: Rendering screen

at net.minecraft.client.gui.achievement.GuiAchievements.func_146552_b(GuiAchievements.java:385)

at net.minecraft.client.gui.achievement.GuiAchievements.drawScreen(GuiAchievements.java:219)

at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(EntityRenderer.java:1137)

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1057)

at net.minecraft.client.Minecraft.run(Minecraft.java:951)

at net.minecraft.client.main.Main.main(Main.java:164)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:78)

at GradleStart.main(GradleStart.java:45)

 

 

 

My AchievementHandler class:

 

 

public class AchievementHandler {

 

private static List<Achievement> list;

 

public static AchievementPage AgeAchievements;

public static Achievement Early_Stoneage = new Achievement("achievement.early_stoneage", "Early Stoneage", 0, -2, new ItemStack(Blocks.cobblestone), (Achievement)null).initIndependentStat().setSpecial().registerStat().parentAchievement;

public static Achievement Stoneage =  new Achievement("achievement.stoneage", "Stoneage", 1, -1, new ItemStack(Blocks.stone), Early_Stoneage).registerStat();

public static Achievement Copperage =  new Achievement("achievement.copperage", "Copperage", 2, 0, new ItemStack(ModItems.copperIngot), Stoneage).registerStat();

public static Achievement Bronzeage =  new Achievement("achievement.bronzeage", "Bronzeage", 0, 1, new ItemStack(ModItems.bronzeIngot), Copperage).registerStat();

public static Achievement Early_Middleage = new Achievement("achievement.early_middleage", "Early Middleage", 4, 2, new ItemStack(ModItems.messingIngot), Bronzeage).registerStat();

public static Achievement Middleage = new Achievement("achievement.middleage", "Middleage", 1, 3, new ItemStack(Items.iron_ingot), Early_Middleage).registerStat();

public static Achievement Renaissance = new Achievement("achievement.renaissance", "Renaissance", 2, 4, new ItemStack(Items.gold_ingot), Middleage).registerStat();

 

public static void registerAchievements(){

 

list = new ArrayList();

 

list.add(Early_Stoneage);

list.add(Stoneage);

list.add(Copperage);

list.add(Bronzeage);

list.add(Early_Middleage);

list.add(Middleage);

list.add(Renaissance);

 

 

}

 

public static void registerAchievementPage(){

 

AchievementPage.registerAchievementPage(new AchievementPage("CrystalRevolution", list.toArray(new Achievement[list.size()])));

 

}

 

public static Achievement getAchievementForItem(ItemStack stack)

{

if (stack == null)

{

return null;

}

 

for (Achievement ach : list)

{

ItemStack s = ach.theItemStack;

 

if (s.getItem() == stack.getItem() && s.getItemDamage() == stack.getItemDamage())

{

return ach;

}

}

 

return null;

}

 

}

 

 

 

The Initialization of my Achievements and the Page:

 

 

@EventHandler

public void preInit(FMLPreInitializationEvent e){

HarvestLevelHandler.HandleVanillaHarvestlvl();

 

LibMisc.logger.info("[Crystal Revolution]: Loading packets");

LibMisc.packetPipeLine.init();

LibMisc.logger.info("[Crystal Revolution]: Loading config");

CrystalConfig.initializeConfiguration(e.getModConfigurationDirectory().toString());

LibMisc.logger.info("[Crystal Revolution]: Removing recipes!");

RecipeRemover.RecipeRemove();

LibMisc.logger.info("[Crystal Revolution]: Loading blocks");

ModBlocks.ladeBloecke();

LibMisc.logger.info("[Crystal Revolution]: Loading items");

ModItems.ladeItems();

TileEntities.loadTileEntities();

AchievementHandler.registerAchievements();

LibMisc.logger.info("[Crystal Revolution]: Packets successfully loaded");

LibMisc.logger.info("[Crystal Revolution]: Config successfully loaded");

LibMisc.logger.info("[Crystal Revolution]: Recipes removed succesfully!");

LibMisc.logger.info("[Crystal Revolution]: Blocks successfully loaded");

LibMisc.logger.info("[Crystal Revolution]: Items successfully loaded");

LibMisc.logger.info("[Crystal Revolution]: Mod successfully loaded");

 

}

@EventHandler

public void Init(FMLInitializationEvent e){

NetworkRegistry.INSTANCE.registerGuiHandler(this, new GuiHandler());

RecipeManager.manageRecipes();

AchievementHandler.registerAchievementPage();

}

 

 

 

Hi

 

One of your achievements appears to be null.  A breakpoint should very quickly show you which one.

 

http://www.vogella.com/tutorials/EclipseDebugging/article.html

 

-TGG

Or one of your items is null.