Get Current Minecraft Player

Nicba1010 · June 27, 2013

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!

Draco18s · June 27, 2013

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

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

Nicba1010 · June 27, 2013

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

Draco18s · June 27, 2013

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.

Nicba1010 · June 27, 2013

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

Nicba1010 · June 27, 2013

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

hydroflame · June 27, 2013

client side:

Minecraft.getMinecraft().thePlayer

serverside(obviously not in a GUI):

make a hashmap and store <String, EntityPlayerMP>

Nicba1010 · June 27, 2013

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

hydroflame · June 27, 2013

client side:
Minecraft.getMinecraft().thePlayer

and client side ONLY

Nicba1010 · June 27, 2013

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

hydroflame · June 27, 2013

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)

Nicba1010 · June 27, 2013

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");

}

hydroflame · June 27, 2013

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.

Nicba1010 · June 27, 2013

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)