I am trying to make a level system. I have succseeded in some places but in other not. The main problem is: how to get current minecraft player, like i mean EntityPlayer.

Here is the error log: http://pastebin.com/ZMVjyjD6

This is the Gui class code:http://pastebin.com/LkVbuNQB

Before i have had

EntityPlayer p = mc.theplayer;

but this doesn't work.

 

Example where it works:

I the Block On Activated method:

public boolean onBlockActivated(World world, int x, int y, int z,EntityPlayer p, int a, float f, float b, float c){
	nbt=p.getEntityData();
	nbt.setInteger("level", getLevel()+1);
	return true;
	}
public int getLevel() {
	return nbt.getInteger("level");
}

because here i have the EntityPlayer supplied.

Chemistryzation.java(main class):http://pastebin.com/aNg5VYCq

 

Please help!

For any useful info you will be credited!

It doesn't work because of the client-server architecture.

 

A SSP game and a SMP game with one connected user are indistinguishable.

So, is there any chance i can do what i want?

You can, you just have to approach it differently.

 

You are going to need an event hook to listen for players joining the server, then save data into the player that way.

so, you mean i save the data to the world as an array about info on the player?

this is the core of the problem: how can i get the entityplayer in my gui class

client side:

Minecraft.getMinecraft().thePlayer

 

serverside(obviously not in a GUI):

make a hashmap and store <String, EntityPlayerMP>

Minecraft.getMinecraft().thePlayer still gives me null pointer

client side:

Minecraft.getMinecraft().thePlayer

 

and client side ONLY

ive modifed and put side only but it doesnt work  :'( pls could you modify my gui code for me

if you use a

spoiler

maybe, because my current network blocks pastebin

 

btw if you wanna check which side your on use:

 

FMLCo[ac].instance().getEffectiveSide().isClient()  ( the [ac] is auto complete, i dont remember the class name exactly)

 

package nicba1010.chemistryzation.common;

 

 

 

import net.minecraft.client.Minecraft;

 

import net.minecraft.client.gui.FontRenderer;

 

import net.minecraft.client.gui.Gui;

 

import net.minecraft.entity.player.EntityPlayer;

 

import net.minecraft.nbt.NBTTagCompound;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;

 

import net.minecraftforge.event.EventPriority;

 

import net.minecraftforge.event.ForgeSubscribe;

 

 

 

//

 

// GuiBuffBar implements a simple status bar at the top of the screen which

 

// shows the current buffs/debuffs applied to the character.

 

//

 

public class GuiChemistryLevel extends Gui {

 

        private Minecraft mc;

 

        FontRenderer fontrenderer;

 

        EntityPlayer p;

 

        NBTTagCompound nbt;

 

 

 

        public GuiChemistryLevel(Minecraft mc) {

 

                super();

 

                fontrenderer = mc.fontRenderer;

 

                // We need this to invoke the render engine.

 

                this.mc = mc;

 

                nbt = p.getEntityData();

 

        }

 

 

 

        @ForgeSubscribe(priority = EventPriority.NORMAL)

 

        public void onRenderExperienceBar(RenderGameOverlayEvent event) {

 

                if (event.isCancelable() || event.type != ElementType.EXPERIENCE) {

 

                        return;

 

                }

 

                int level;

 

                level = nbt.getInteger("level");

 

                if (level == 0) {

 

                        nbt.setInteger("level", 1);

 

                        level = nbt.getInteger("level");

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                } else {

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                }

 

 

 

                this.mc.renderEngine.bindTexture("/gui/inventory.png");

 

        }

 

}

 

heu ... yeah no shit you're having a NPE

 

 

 

package nicba1010.chemistryzation.common;

 

 

 

import net.minecraft.client.Minecraft;

 

import net.minecraft.client.gui.FontRenderer;

 

import net.minecraft.client.gui.Gui;

 

import net.minecraft.entity.player.EntityPlayer;

 

import net.minecraft.nbt.NBTTagCompound;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;

 

import net.minecraftforge.event.EventPriority;

 

import net.minecraftforge.event.ForgeSubscribe;

 

 

 

//

 

// GuiBuffBar implements a simple status bar at the top of the screen which

 

// shows the current buffs/debuffs applied to the character.

 

//

 

public class GuiChemistryLevel extends Gui {

 

        private Minecraft mc;

 

        FontRenderer fontrenderer;

 

        EntityPlayer p;

 

        NBTTagCompound nbt;

 

 

 

        public GuiChemistryLevel(Minecraft mc) {

 

                super();

 

                fontrenderer = mc.fontRenderer;

 

                // We need this to invoke the render engine.

 

                this.mc = mc;

 

                nbt = p.getEntityData();

 

        }

 

 

 

        @ForgeSubscribe(priority = EventPriority.NORMAL)

 

        public void onRenderExperienceBar(RenderGameOverlayEvent event) {

 

                if (event.isCancelable() || event.type != ElementType.EXPERIENCE) {

 

                        return;

 

                }

 

                int level;

 

                level = nbt.getInteger("level");

 

                if (level == 0) {

 

                        nbt.setInteger("level", 1);

 

                        level = nbt.getInteger("level");

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                } else {

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                }

 

 

 

                this.mc.renderEngine.bindTexture("/gui/inventory.png");

 

        }

 

}

 

 

 

the EntityPlayer is never initialized

 

 

 

 

package nicba1010.chemistryzation.common;

 

 

 

import net.minecraft.client.Minecraft;

 

import net.minecraft.client.gui.FontRenderer;

 

import net.minecraft.client.gui.Gui;

 

import net.minecraft.entity.player.EntityPlayer;

 

import net.minecraft.nbt.NBTTagCompound;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;

 

import net.minecraftforge.event.EventPriority;

 

import net.minecraftforge.event.ForgeSubscribe;

 

 

 

//

 

// GuiBuffBar implements a simple status bar at the top of the screen which

 

// shows the current buffs/debuffs applied to the character.

 

//

 

public class GuiChemistryLevel extends Gui {

 

        private Minecraft mc;

 

        FontRenderer fontrenderer;

 

        EntityPlayer p;

        //this should probably be a

        EntityClientPlayerMP player;

 

        NBTTagCompound nbt;

 

 

 

        public GuiChemistryLevel(Minecraft mc) {

 

                super();

 

                fontrenderer = mc.fontRenderer;

 

                // We need this to invoke the render engine.

 

                this.mc = mc;

                //now like i said earlier

                p = Minecraft.getMinecraft().thePlayer;

                //or

                p = mc.thePlayer;

                //since mc is a reference to the current Minecraft

 

                nbt = p.getEntityData();

 

        }

 

 

 

        @ForgeSubscribe(priority = EventPriority.NORMAL)

 

        public void onRenderExperienceBar(RenderGameOverlayEvent event) {

 

                if (event.isCancelable() || event.type != ElementType.EXPERIENCE) {

 

                        return;

 

                }

 

                int level;

 

                level = nbt.getInteger("level");

 

                if (level == 0) {

 

                        nbt.setInteger("level", 1);

 

                        level = nbt.getInteger("level");

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                } else {

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                }

 

 

 

                this.mc.renderEngine.bindTexture("/gui/inventory.png");

 

        }

 

}

 

 

 

btw not to be mean but i suggest you attack smaller mods. This is a pretty obvious error.

BTW STILL Caught exception from chemistryzation

java.lang.NullPointerException

at nicba1010.chemistryzation.common.GuiChemistryLevel.<init>(GuiChemistryLevel.java:49)

at nicba1010.chemistryzation.common.Chemistryzation.postInit(Chemistryzation.java:76)

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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)

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 com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)

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 com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)

at cpw.mods.fml.common.Loader.initializeMods(Loader.java:695)

at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:206)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:447)

at net.minecraft.client.MinecraftAppletImpl.startGame(MinecraftAppletImpl.java:44)

at net.minecraft.client.Minecraft.run(Minecraft.java:732)

at java.lang.Thread.run(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] java.lang.NullPointerException

2013-06-27 16:23:32 [iNFO] [sTDERR] at nicba1010.chemistryzation.common.GuiChemistryLevel.<init>(GuiChemistryLevel.java:49)

2013-06-27 16:23:32 [iNFO] [sTDERR] at nicba1010.chemistryzation.common.Chemistryzation.postInit(Chemistryzation.java:76)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-06-27 16:23:32 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-06-27 16:23:32 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-06-27 16:23:32 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)

2013-06-27 16:23:32 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.initializeMods(Loader.java:695)

2013-06-27 16:23:32 [iNFO] [sTDERR] at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:206)

2013-06-27 16:23:32 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.startGame(Minecraft.java:447)

2013-06-27 16:23:32 [iNFO] [sTDERR] at net.minecraft.client.MinecraftAppletImpl.startGame(MinecraftAppletImpl.java:44)

2013-06-27 16:23:32 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:732)

2013-06-27 16:23:32 [iNFO] [sTDERR] at java.lang.Thread.run(Unknown Source)

 

errors on p.getEntityData !

can we see the class "Chemistryzation". why are you calling a gui from there ? Even worst, why is it from a method called postInit ?

 

 

at nicba1010.chemistryzation.common.GuiChemistryLevel.<init>(GuiChemistryLevel.java:49)

at nicba1010.chemistryzation.common.Chemistryzation.postInit(Chemistryzation.java:76)

 

 

package nicba1010.chemistryzation.common;

 

import net.minecraft.block.Block;

import net.minecraft.block.material.Material;

import net.minecraft.client.Minecraft;

import net.minecraft.item.Item;

import net.minecraft.item.ItemStack;

import net.minecraft.item.crafting.FurnaceRecipes;

import net.minecraftforge.common.MinecraftForge;

import cpw.mods.fml.common.Mod;

import cpw.mods.fml.common.Mod.Init;

import cpw.mods.fml.common.Mod.PostInit;

import cpw.mods.fml.common.event.FMLInitializationEvent;

import cpw.mods.fml.common.event.FMLPostInitializationEvent;

import cpw.mods.fml.common.network.NetworkMod;

import cpw.mods.fml.common.registry.GameRegistry;

import cpw.mods.fml.common.registry.LanguageRegistry;

 

@Mod(modid = Chemistryzation.modid, name = "chemistryzation", version = "0")

@NetworkMod(clientSideRequired = true, serverSideRequired = false)

public class Chemistryzation {

        public static final String modid = "chemistryzation";

        public static Block NaClBlock;

        public static Item NaClItem, NaClInBucketSolid, NaClInBucketMelted,

                        TestTube, NaClInTestTubeSolid;

 

        @Init

        public void load(FMLInitializationEvent event) {

                NaClBlock = new BlockNaClBlock(500, Material.rock)

                                .setUnlocalizedName("NaClBlock");

                GameRegistry.registerBlock(NaClBlock,

                                modid + "NaClBlock");

                LanguageRegistry.addName(NaClBlock, "Salt");

 

                NaClItem = new ItemNaClItem(5000).setUnlocalizedName("NaClItem");

                LanguageRegistry.addName(NaClItem, "NaCl");

 

                NaClInBucketSolid = new NaClInBucketSolid(5001)

                                .setUnlocalizedName("NaClInBucketSolid");

                LanguageRegistry.addName(NaClInBucketSolid, "NaCl");

 

                NaClInBucketMelted = new NaClInBucketMelted(5002)

                                .setUnlocalizedName("NaClInBucketMelted");

                LanguageRegistry.addName(NaClInBucketMelted, "NaCl");

 

                TestTube = new TestTube(5003).setUnlocalizedName("TestTube");

                LanguageRegistry.addName(TestTube, "Test Tube");

 

                NaClInTestTubeSolid = new NaClInTestTubeSolid(5004)

                                .setUnlocalizedName("NaClInTestTubeSolid");

                LanguageRegistry.addName(NaClInTestTubeSolid, "NaCl");

 

                GameRegistry.addRecipe(new ItemStack(Chemistryzation.TestTube, ,

                                "XYX", "X X", " X ", Character.valueOf('X'), new ItemStack(

                                                Block.glass), Character.valueOf('Y'), Item.slimeBall);

 

                ItemStack NaClItemStack = new ItemStack(Chemistryzation.NaClItem);

                GameRegistry.addShapelessRecipe(new ItemStack(NaClInBucketSolid),

                                new Object[] { NaClItemStack, NaClItemStack, NaClItemStack,

                                                NaClItemStack, NaClItemStack, NaClItemStack,

                                                NaClItemStack, NaClItemStack,

                                                new ItemStack(Item.bucketEmpty) });

                GameRegistry

                                .addShapelessRecipe(new ItemStack(NaClInTestTubeSolid),

                                                new Object[] { NaClItemStack, NaClItemStack,

                                                                NaClItemStack, NaClItemStack,

                                                                new ItemStack(Chemistryzation.TestTube) });

                FurnaceRecipes.smelting().addSmelting(

                                Chemistryzation.NaClInBucketSolid.itemID, 0,

                                new ItemStack(Chemistryzation.NaClInBucketMelted), 0.1F);

        }

 

        @PostInit

        public void postInit(FMLPostInitializationEvent event) {

                MinecraftForge.EVENT_BUS.register(new GuiChemistryLevel(Minecraft

                                .getMinecraft()));

        }

}

1 please use spoilers,

 

2 ..................

 

 

 

 

what you are saying to the mod right now is

"oh you're initializing the server? OPEN A GUI NOW NOW NOW" which cant happen server side

 

1 make a class that implements IGuiHandler

2 register this class like this

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

3 make GuiChemistryLevel  extends GuiScreen instead

4 call the gui from any method (either right click a block or bind it to a key)

5 look at the wiki and tutorials.

 

 

 

I DID 5

http://www.minecraftforge.net/wiki/Gui_Overlay

use something liek thsi

 

 

 

package nicba1010.chemistryzation.common;

 

 

 

import net.minecraft.client.Minecraft;

 

import net.minecraft.client.gui.FontRenderer;

 

import net.minecraft.client.gui.Gui;

 

import net.minecraft.entity.player.EntityPlayer;

 

import net.minecraft.nbt.NBTTagCompound;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent;

 

import net.minecraftforge.client.event.RenderGameOverlayEvent.ElementType;

 

import net.minecraftforge.event.EventPriority;

 

import net.minecraftforge.event.ForgeSubscribe;

 

 

 

//

 

// GuiBuffBar implements a simple status bar at the top of the screen which

 

// shows the current buffs/debuffs applied to the character.

 

//

 

public class GuiChemistryLevel extends Gui {

 

        private Minecraft mc;

 

        FontRenderer fontrenderer;

 

        EntityPlayer p;

 

        NBTTagCompound nbt;

 

 

 

        public GuiChemistryLevel(Minecraft mc) {

 

                super();

 

                fontrenderer = mc.fontRenderer;

 

                // We need this to invoke the render engine.

 

                this.mc = mc;

 

        }

 

 

 

        @ForgeSubscribe(priority = EventPriority.NORMAL)

 

        public void onRenderExperienceBar(RenderGameOverlayEvent event) {

             

 

              p = mc.thePlayer;

              nbt = p.getEntityData();

 

                 

                if (event.isCancelable() || event.type != ElementType.EXPERIENCE) {

 

                        return;

 

                }

 

                int level;

 

                level = nbt.getInteger("level");

 

                if (level == 0) {

 

                        nbt.setInteger("level", 1);

 

                        level = nbt.getInteger("level");

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                } else {

 

                        fontrenderer.drawString("Level " + level, 1, 1, 0xffffffff);

 

                }

 

 

 

                this.mc.renderEngine.bindTexture("/gui/inventory.png");

 

        }

 

}

 

OMG THANKS. You will definetly be credited man.

O snap why doesn't it save on logout

if you save on the gui its considered client side. you have to save it server side

pls tell me how do you do that

packets

 

http://www.minecraftforge.net/wiki/Tutorials/Packet_Handling