[1.7.10] Container sur un item

kraniax

Bonjour, j'aimerais savoir comment créer un container sur un item en 1.7.10. J'ai déjà suivi le tutoriel du site mais lorsque que j'ouvre le container, mon jeu crash.

Merci.

robin4002

Salut,

Tu as suivi ce tutoriel ? https://www.minecraftforgefrance.fr/topic/2015/créer-un-item-container-type-backpack-sac-à-dos
Quel est le crash que tu as ? (envoies un copier/coller du rapport).

kraniax

Oui j'ai suivi ce tutoriel.

Voici le rapport du crash :

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 30/03/19 19:13
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
	at cpw.mods.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:265)
	at cpw.mods.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:93)
	at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2501)
	at fr.kraniax.arrow.proxy.ItemBackPack.onItemRightClick(ItemBackPack.java:23)
	at net.minecraft.item.ItemStack.useItemRightClick(ItemStack.java:164)
	at net.minecraft.client.multiplayer.PlayerControllerMP.sendUseItem(PlayerControllerMP.java:430)
	at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1557)
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:2044)
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1039)
	at net.minecraft.client.Minecraft.run(Minecraft.java:962)
	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(Unknown Source)
	at GradleStart.main(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at cpw.mods.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:265)
	at cpw.mods.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:93)
	at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2501)
	at fr.kraniax.arrow.proxy.ItemBackPack.onItemRightClick(ItemBackPack.java:23)
	at net.minecraft.item.ItemStack.useItemRightClick(ItemStack.java:164)
	at net.minecraft.client.multiplayer.PlayerControllerMP.sendUseItem(PlayerControllerMP.java:430)
	at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1557)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [EntityClientPlayerMP['Player585'/327, l='MpServer', x=-180,48, y=5,62, z=270,75]]
	Chunk stats: MultiplayerChunkCache: 165, 165
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-173,4,278), Chunk: (at 3,0,6 in -11,17; contains blocks -176,0,272 to -161,255,287), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 8227 game time, 8227 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 166 total; [EntitySlime['Slime'/271, l='MpServer', x=-111,47, y=4,00, z=221,68], EntityCow['Cow'/15, l='MpServer', x=-260,63, y=4,00, z=228,22], EntityPig['Pig'/272, l='MpServer', x=-108,47, y=4,00, z=232,81], EntityChicken['Chicken'/273, l='MpServer', x=-111,81, y=4,00, z=241,28], EntitySheep['Sheep'/274, l='MpServer', x=-110,66, y=4,00, z=241,59], EntitySheep['Sheep'/275, l='MpServer', x=-108,13, y=4,00, z=254,56], EntitySlime['Slime'/20, l='MpServer', x=-258,50, y=4,00, z=269,06], EntitySlime['Slime'/277, l='MpServer', x=-109,39, y=4,00, z=274,00], EntitySlime['Slime'/278, l='MpServer', x=-104,23, y=4,00, z=299,03], EntitySheep['Sheep'/22, l='MpServer', x=-257,03, y=4,00, z=282,97], EntitySheep['Sheep'/279, l='MpServer', x=-104,13, y=4,00, z=324,66], EntitySheep['Sheep'/23, l='MpServer', x=-256,50, y=4,00, z=293,19], EntitySlime['Slime'/280, l='MpServer', x=-106,91, y=4,00, z=331,50], EntityChicken['Chicken'/24, l='MpServer', x=-259,28, y=4,00, z=289,97], EntitySlime['Slime'/281, l='MpServer', x=-110,78, y=4,00, z=324,00], EntitySlime['Slime'/6171, l='MpServer', x=-191,80, y=4,00, z=213,20], EntitySlime['Slime'/30, l='MpServer', x=-261,09, y=4,00, z=293,16], EntityXPOrb['Experience Orb'/292, l='MpServer', x=-84,50, y=4,26, z=314,05], EntityCow['Cow'/37, l='MpServer', x=-249,09, y=4,00, z=202,91], EntityXPOrb['Experience Orb'/293, l='MpServer', x=-81,50, y=4,35, z=318,98], EntityHorse['Horse'/38, l='MpServer', x=-248,41, y=4,00, z=214,91], EntityXPOrb['Experience Orb'/294, l='MpServer', x=-81,24, y=4,46, z=321,92], EntityHorse['Horse'/39, l='MpServer', x=-248,28, y=4,00, z=229,72], EntityChicken['Chicken'/40, l='MpServer', x=-242,94, y=4,00, z=228,06], EntityChicken['Chicken'/41, l='MpServer', x=-253,22, y=4,00, z=240,34], EntitySlime['Slime'/42, l='MpServer', x=-246,41, y=4,00, z=266,53], EntityPig['Pig'/43, l='MpServer', x=-244,50, y=4,00, z=280,75], EntityXPOrb['Experience Orb'/299, l='MpServer', x=-91,59, y=4,45, z=351,05], EntityHorse['Horse'/44, l='MpServer', x=-242,22, y=4,00, z=272,84], EntitySheep['Sheep'/45, l='MpServer', x=-244,50, y=4,00, z=279,50], EntitySheep['Sheep'/46, l='MpServer', x=-245,47, y=4,00, z=290,44], EntitySheep['Sheep'/47, l='MpServer', x=-253,78, y=4,00, z=301,84], EntitySheep['Sheep'/48, l='MpServer', x=-254,78, y=4,00, z=309,84], EntitySlime['Slime'/49, l='MpServer', x=-245,64, y=4,47, z=315,88], EntityChicken['Chicken'/53, l='MpServer', x=-238,66, y=4,00, z=214,44], EntityChicken['Chicken'/54, l='MpServer', x=-230,06, y=4,00, z=230,16], EntityHorse['Horse'/55, l='MpServer', x=-238,56, y=4,00, z=262,22], EntityPig['Pig'/56, l='MpServer', x=-225,88, y=4,00, z=271,31], EntityHorse['Horse'/57, l='MpServer', x=-227,97, y=4,00, z=271,88], EntitySlime['Slime'/58, l='MpServer', x=-229,09, y=4,80, z=266,13], EntitySheep['Sheep'/59, l='MpServer', x=-237,38, y=4,00, z=276,31], EntityPig['Pig'/60, l='MpServer', x=-233,88, y=4,00, z=282,34], EntityPig['Pig'/61, l='MpServer', x=-238,38, y=4,00, z=285,53], EntityChicken['Chicken'/62, l='MpServer', x=-225,47, y=4,00, z=342,53], EntitySlime['Slime'/65, l='MpServer', x=-213,14, y=4,00, z=268,34], EntitySlime['Slime'/66, l='MpServer', x=-219,74, y=4,31, z=330,81], EntityPig['Pig'/67, l='MpServer', x=-217,63, y=4,00, z=343,78], EntityCow['Cow'/69, l='MpServer', x=-201,47, y=4,00, z=241,47], EntitySlime['Slime'/70, l='MpServer', x=-202,25, y=4,00, z=266,66], EntitySlime['Slime'/71, l='MpServer', x=-197,93, y=5,05, z=289,85], EntityClientPlayerMP['Player585'/327, l='MpServer', x=-180,48, y=5,62, z=270,75], EntitySlime['Slime'/72, l='MpServer', x=-196,24, y=4,00, z=296,66], EntitySlime['Slime'/73, l='MpServer', x=-197,13, y=4,00, z=299,59], EntitySlime['Slime'/74, l='MpServer', x=-195,38, y=4,00, z=289,06], EntityPig['Pig'/75, l='MpServer', x=-199,72, y=4,00, z=349,28], EntityChicken['Chicken'/84, l='MpServer', x=-178,44, y=4,00, z=222,44], EntitySlime['Slime'/85, l='MpServer', x=-181,94, y=4,00, z=221,75], EntityCow['Cow'/86, l='MpServer', x=-185,75, y=4,00, z=233,78], EntityCow['Cow'/87, l='MpServer', x=-181,78, y=4,00, z=237,34], EntityCow['Cow'/88, l='MpServer', x=-183,59, y=4,00, z=223,23], EntityCow['Cow'/89, l='MpServer', x=-187,28, y=4,00, z=224,44], EntityHorse['Horse'/90, l='MpServer', x=-184,50, y=4,00, z=252,19], EntitySlime['Slime'/91, l='MpServer', x=-189,24, y=4,00, z=245,53], EntitySheep['Sheep'/92, l='MpServer', x=-177,16, y=4,00, z=267,84], EntitySlime['Slime'/93, l='MpServer', x=-192,66, y=4,00, z=283,59], EntityXPOrb['Experience Orb'/94, l='MpServer', x=-184,59, y=4,25, z=296,45], EntityXPOrb['Experience Orb'/95, l='MpServer', x=-186,96, y=4,25, z=287,59], EntityArrow['arrow'/96, l='MpServer', x=-178,09, y=4,00, z=319,28], EntitySlime['Slime'/97, l='MpServer', x=-183,08, y=4,00, z=306,41], EntitySlime['Slime'/98, l='MpServer', x=-190,19, y=4,00, z=316,91], EntityChicken['Chicken'/99, l='MpServer', x=-188,41, y=4,00, z=328,66], EntitySlime['Slime'/100, l='MpServer', x=-177,42, y=4,00, z=326,48], EntitySlime['Slime'/101, l='MpServer', x=-180,06, y=4,69, z=341,45], EntitySlime['Slime'/111, l='MpServer', x=-174,42, y=4,00, z=212,25], EntityChicken['Chicken'/112, l='MpServer', x=-164,81, y=4,00, z=224,81], EntitySlime['Slime'/113, l='MpServer', x=-170,16, y=4,69, z=232,61], EntityPig['Pig'/114, l='MpServer', x=-164,44, y=4,00, z=253,78], EntityChicken['Chicken'/115, l='MpServer', x=-168,47, y=4,00, z=252,47], EntityArrow['arrow'/116, l='MpServer', x=-174,50, y=4,00, z=249,59], EntitySlime['Slime'/117, l='MpServer', x=-168,51, y=4,00, z=242,00], EntitySlime['Slime'/118, l='MpServer', x=-162,09, y=4,00, z=247,43], EntityPig['Pig'/119, l='MpServer', x=-172,50, y=4,00, z=244,97], EntitySlime['Slime'/120, l='MpServer', x=-174,69, y=4,00, z=284,93], EntityArrow['arrow'/121, l='MpServer', x=-170,44, y=4,00, z=292,13], EntityArrow['arrow'/122, l='MpServer', x=-169,38, y=4,00, z=292,56], EntityArrow['arrow'/123, l='MpServer', x=-173,28, y=4,00, z=291,75], EntityArrow['arrow'/124, l='MpServer', x=-161,44, y=4,00, z=294,06], EntityArrow['arrow'/125, l='MpServer', x=-162,53, y=4,00, z=300,09], EntityArrow['arrow'/126, l='MpServer', x=-160,44, y=4,00, z=303,06], EntityXPOrb['Experience Orb'/127, l='MpServer', x=-160,59, y=4,25, z=302,15], EntityXPOrb['Experience Orb'/128, l='MpServer', x=-159,90, y=4,25, z=302,25], EntitySlime['Slime'/130, l='MpServer', x=-164,22, y=4,00, z=342,69], EntitySlime['Slime'/131, l='MpServer', x=-174,28, y=4,00, z=337,88], EntityPig['Pig'/137, l='MpServer', x=-155,84, y=4,00, z=212,59], EntityArrow['arrow'/138, l='MpServer', x=-148,00, y=4,00, z=255,50], EntityPig['Pig'/139, l='MpServer', x=-159,72, y=4,00, z=257,50], EntityXPOrb['Experience Orb'/140, l='MpServer', x=-152,56, y=4,25, z=268,55], EntityXPOrb['Experience Orb'/141, l='MpServer', x=-144,34, y=4,25, z=271,69], EntitySlime['Slime'/142, l='MpServer', x=-149,47, y=4,00, z=266,75], EntityXPOrb['Experience Orb'/143, l='MpServer', x=-144,49, y=4,25, z=273,59], EntityXPOrb['Experience Orb'/144, l='MpServer', x=-144,50, y=4,25, z=271,80], EntityXPOrb['Experience Orb'/145, l='MpServer', x=-152,88, y=4,25, z=275,40], EntityXPOrb['Experience Orb'/146, l='MpServer', x=-154,23, y=4,25, z=275,38], EntityArrow['arrow'/147, l='MpServer', x=-144,38, y=4,04, z=287,41], EntityXPOrb['Experience Orb'/148, l='MpServer', x=-152,83, y=4,25, z=287,56], EntityXPOrb['Experience Orb'/149, l='MpServer', x=-152,69, y=4,25, z=291,56], EntityXPOrb['Experience Orb'/150, l='MpServer', x=-155,63, y=4,25, z=291,56], EntityArrow['arrow'/151, l='MpServer', x=-146,72, y=4,05, z=288,09], EntityArrow['arrow'/152, l='MpServer', x=-147,10, y=4,05, z=288,13], EntityArrow['arrow'/153, l='MpServer', x=-158,88, y=4,00, z=289,72], EntityXPOrb['Experience Orb'/154, l='MpServer', x=-151,34, y=4,25, z=287,42], EntityArrow['arrow'/155, l='MpServer', x=-158,94, y=4,00, z=290,16], EntityArrow['arrow'/156, l='MpServer', x=-159,16, y=4,00, z=290,69], EntityArrow['arrow'/157, l='MpServer', x=-157,66, y=4,04, z=302,47], EntityArrow['arrow'/158, l='MpServer', x=-155,13, y=4,05, z=301,10], EntityArrow['arrow'/159, l='MpServer', x=-144,06, y=4,05, z=305,60], EntityArrow['arrow'/160, l='MpServer', x=-150,38, y=4,00, z=326,13], EntitySlime['Slime'/161, l='MpServer', x=-145,88, y=4,00, z=332,28], EntitySlime['Slime'/162, l='MpServer', x=-146,00, y=4,00, z=322,88], EntitySlime['Slime'/163, l='MpServer', x=-157,04, y=4,00, z=339,09], EntityChicken['Chicken'/166, l='MpServer', x=-138,44, y=4,00, z=242,44], EntityItem['item.item.slimeball'/167, l='MpServer', x=-128,19, y=4,13, z=270,31], EntityXPOrb['Experience Orb'/168, l='MpServer', x=-128,53, y=4,25, z=266,87], EntityXPOrb['Experience Orb'/169, l='MpServer', x=-129,38, y=4,25, z=281,07], EntityXPOrb['Experience Orb'/170, l='MpServer', x=-132,74, y=4,31, z=280,75], EntityItem['item.item.slimeball'/171, l='MpServer', x=-130,91, y=4,13, z=280,91], EntityXPOrb['Experience Orb'/172, l='MpServer', x=-131,54, y=4,25, z=272,91], EntitySlime['Slime'/173, l='MpServer', x=-134,87, y=4,00, z=283,00], EntityItem['item.item.slimeball'/174, l='MpServer', x=-136,59, y=4,13, z=296,41], EntityArrow['arrow'/175, l='MpServer', x=-143,06, y=4,05, z=299,10], EntityArrow['arrow'/176, l='MpServer', x=-143,09, y=4,04, z=299,38], EntityArrow['arrow'/177, l='MpServer', x=-143,44, y=4,00, z=308,16], EntityArrow['arrow'/178, l='MpServer', x=-143,47, y=4,00, z=309,25], EntityXPOrb['Experience Orb'/179, l='MpServer', x=-141,31, y=4,25, z=309,55], EntityXPOrb['Experience Orb'/180, l='MpServer', x=-141,22, y=4,52, z=314,59], EntityXPOrb['Experience Orb'/181, l='MpServer', x=-131,43, y=4,25, z=329,67], EntityArrow['arrow'/182, l='MpServer', x=-130,00, y=4,00, z=330,00], EntityArrow['arrow'/183, l='MpServer', x=-130,50, y=4,00, z=329,22], EntityArrow['arrow'/184, l='MpServer', x=-130,09, y=4,00, z=328,31], EntityArrow['arrow'/185, l='MpServer', x=-131,59, y=4,00, z=328,78], EntityArrow['arrow'/186, l='MpServer', x=-131,75, y=4,00, z=329,78], EntityArrow['arrow'/187, l='MpServer', x=-131,16, y=4,00, z=333,81], EntityArrow['arrow'/189, l='MpServer', x=-133,00, y=4,00, z=333,03], EntityArrow['arrow'/190, l='MpServer', x=-133,97, y=4,00, z=332,56], EntityArrow['arrow'/191, l='MpServer', x=-133,81, y=4,00, z=331,13], EntityArrow['arrow'/192, l='MpServer', x=-133,25, y=4,00, z=330,50], EntityArrow['arrow'/193, l='MpServer', x=-133,56, y=4,00, z=331,13], EntityArrow['arrow'/194, l='MpServer', x=-135,06, y=4,00, z=334,22], EntitySlime['Slime'/204, l='MpServer', x=-139,94, y=4,00, z=341,63], EntitySlime['Slime'/205, l='MpServer', x=-141,76, y=4,00, z=338,73], EntitySlime['Slime'/236, l='MpServer', x=-122,81, y=4,00, z=207,69], EntityChicken['Chicken'/237, l='MpServer', x=-119,30, y=4,00, z=232,36], EntityPig['Pig'/238, l='MpServer', x=-119,34, y=4,00, z=236,06], EntitySheep['Sheep'/239, l='MpServer', x=-115,84, y=4,00, z=234,84], EntitySlime['Slime'/240, l='MpServer', x=-121,71, y=4,00, z=234,12], EntityChicken['Chicken'/241, l='MpServer', x=-115,72, y=4,00, z=252,72], EntityPig['Pig'/242, l='MpServer', x=-113,31, y=4,00, z=244,50], EntitySheep['Sheep'/243, l='MpServer', x=-114,66, y=4,00, z=241,19], EntitySlime['Slime'/244, l='MpServer', x=-119,38, y=4,00, z=279,25], EntitySlime['Slime'/245, l='MpServer', x=-123,58, y=4,00, z=286,66], EntitySlime['Slime'/246, l='MpServer', x=-128,94, y=4,00, z=311,03], EntitySlime['Slime'/247, l='MpServer', x=-112,84, y=4,00, z=307,97], EntityXPOrb['Experience Orb'/248, l='MpServer', x=-131,00, y=4,30, z=333,11], EntityXPOrb['Experience Orb'/249, l='MpServer', x=-112,32, y=4,25, z=331,50], EntityXPOrb['Experience Orb'/250, l='MpServer', x=-115,43, y=4,25, z=335,54], EntitySlime['Slime'/251, l='MpServer', x=-113,63, y=4,80, z=336,56]]
	Retry entities: 0 total; []
	Server brand: fml,forge
	Server type: Integrated singleplayer server
Stacktrace:
	at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:415)
	at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2566)
	at net.minecraft.client.Minecraft.run(Minecraft.java:991)
	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(Unknown Source)
	at GradleStart.main(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_191, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 781970872 bytes (745 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 4 mods loaded, 4 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAAAA	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJAAAA	FML{7.10.99.99} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.4.1558-1.7.10.jar) 
	UCHIJAAAA	Forge{10.13.4.1558} [Minecraft Forge] (forgeSrc-1.7.10-10.13.4.1558-1.7.10.jar) 
	UCHIJAAAA	arrow{1.0.0} [Arrow] (bin) 
	GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 398.11' Renderer: 'GeForce GTX 1050/PCIe/SSE2'
	Launched Version: 1.7.10
	LWJGL: 2.9.1
	OpenGL: GeForce GTX 1050/PCIe/SSE2 GL version 4.6.0 NVIDIA 398.11, NVIDIA Corporation
	GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)

robin4002

L'instance de ton mod est probablement null.
Vérifies que l'annotation @Instance se trouve bien juste au-dessus de l'instance du mod et que le modid correspond.

kraniax

Voici aussi le code :

package fr.kraniax.arrow.proxy.item;

import cpw.mods.fml.common.registry.GameRegistry;
import fr.kraniax.arrow.Reference;
import fr.kraniax.arrow.proxy.ItemBackPack;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;

public class ItemArrow {
	
	public static Item compoundBow;
	public static Item quiver;
	
	public static void init() {
		compoundBow = new CompoundBow().setUnlocalizedName("compound_bow").setCreativeTab(CreativeTabs.tabCombat).setTextureName(Reference.MODID + ":compound_bow");
		quiver = new ItemBackPack().setUnlocalizedName("quiver").setCreativeTab(CreativeTabs.tabCombat);
	}
	
	public static void GameRegistry() {
		GameRegistry.registerItem(compoundBow, "compound_bow");
		GameRegistry.registerItem(quiver, "quiver");

	}
	
	public static final void registerItemsCrafts() {}

}

package fr.kraniax.arrow.proxy.item;

import cpw.mods.fml.common.registry.GameRegistry;
import fr.kraniax.arrow.Reference;
import fr.kraniax.arrow.proxy.ItemBackPack;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;

public class ItemArrow {
	
	public static Item compoundBow;
	public static Item quiver;
	
	public static void init() {
		compoundBow = new CompoundBow().setUnlocalizedName("compound_bow").setCreativeTab(CreativeTabs.tabCombat).setTextureName(Reference.MODID + ":compound_bow");
		quiver = new ItemBackPack().setUnlocalizedName("quiver").setCreativeTab(CreativeTabs.tabCombat);
	}
	
	public static void GameRegistry() {
		GameRegistry.registerItem(compoundBow, "compound_bow");
		GameRegistry.registerItem(quiver, "quiver");

	}
	
	public static final void registerItemsCrafts() {}

}

package fr.kraniax.arrow.proxy;

import cpw.mods.fml.common.registry.GameRegistry;
import fr.kraniax.arrow.Main;
import fr.kraniax.arrow.Reference;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

public class ItemBackPack extends Item{
	
	public static final String NAME = "quiver";

	public ItemBackPack() {
		this.maxStackSize = 1;
	}

	@Override
	public ItemStack onItemRightClick(ItemStack stack, World world, EntityPlayer player) {
		player.openGui(Main.instance, 0, world, (int) player.posX, (int) player.posY, (int) player.posZ);
		return stack;
	}

	/**
	 * @param stack
	 *            ItemStack used
	 * @param held
	 *            true if the player is holding this item
	 */
	@Override
	public void onUpdate(ItemStack stack, World world, Entity entity, int slot, boolean held) {}

}

package fr.kraniax.arrow.proxy;

import fr.kraniax.arrow.Reference;
import fr.kraniax.arrow.proxy.item.ItemArrow;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraftforge.common.util.Constants;

public class InventoryBackPack implements IInventory {
	
	public ItemStack[] content;
	public int size;

	public InventoryBackPack(ItemStack container, int size) {
		this.size = size;
		this.content = new ItemStack[size];
		if (!container.hasTagCompound()) container.setTagCompound(new NBTTagCompound());
		this.readFromNBT(container.getTagCompound());
	}

	/**
	 * This methods reads the content of the NBTTagCompound inside the container
	 * 
	 * @param comp the container NBTTagCompound
	 */
	public void readFromNBT(NBTTagCompound comp) {
		NBTTagList nbtlist = comp.getTagList("Inventory", Constants.NBT.TAG_COMPOUND);
		for (int i = 0; i < nbtlist.tagCount(); i++) {
			NBTTagCompound comp1 = nbtlist.getCompoundTagAt(i);
			int slot = comp1.getInteger("Slot");
			this.content[slot] = ItemStack.loadItemStackFromNBT(comp1);
		}
	}

	/**
	 * This methods saves the content inside the container
	 * 
	 * @param comp the NBTTagCompound to write in
	 */
	public void writeToNBT(NBTTagCompound comp) {
		NBTTagList nbtlist = new NBTTagList();

		for (int i = 0; i < this.size; i++) {
			if (this.content[i] != null) {
				NBTTagCompound comp1 = new NBTTagCompound();
				comp1.setInteger("Slot", i);
				this.content[i].writeToNBT(comp1);
				nbtlist.appendTag(comp1);
			}
		}
		comp.setTag("Inventory", nbtlist);
	}

	@Override
	public int getSizeInventory() {
		return this.size;
	}

	@Override
	public ItemStack getStackInSlot(int index) {
		return this.content[index];
	}

	@Override
	public ItemStack decrStackSize(int index, int amount) {
		ItemStack stack = getStackInSlot(index);
		if (stack != null) {
			if (stack.stackSize > amount) {
				stack = stack.splitStack(amount);
				if (stack.stackSize == 0) this.content[index] = null;
			} else {
				this.content[index] = null;
			}
		}
		return stack;
	}

	@Override
	public ItemStack getStackInSlotOnClosing(int index) {
		ItemStack stack = getStackInSlot(index);
		if (stack != null) this.content[index] = null;
		return stack;
	}

	@Override
	public void setInventorySlotContents(int index, ItemStack stack) {
		this.content[index] = stack;
	}

	@Override
	public String getInventoryName() {
		return Reference.MODID + ".container.backpack";
	}

	@Override
	public boolean hasCustomInventoryName() {
		return false;
	}

	@Override
	public int getInventoryStackLimit() {
		return 64;
	}

	@Override
	public void markDirty() {}


	@Override
	public void openInventory() {}

	@Override
	public void closeInventory() {}
	
	@Override
	public boolean isUseableByPlayer(EntityPlayer player) {
		return true;
	}

	@Override
	public boolean isItemValidForSlot(int index, ItemStack stack) {
		return !(stack.getItem() instanceof ItemBackPack && !(stack.getItem() == ItemArrow.quiver));
	}



}

package fr.kraniax.arrow.proxy;

import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;

public class SlotBackPack extends Slot{
	
	public SlotBackPack(IInventory inv, int index, int x, int y) {
		super(inv, index, x, y);
	}

	/**
	 * Method used to prevent backpack-ception (backpacks inside backpacks)
	 */
	@Override
	public boolean isItemValid(ItemStack stack) {
		return !(stack.getItem() instanceof ItemBackPack);
	}

}

package fr.kraniax.arrow.proxy;

import cpw.mods.fml.common.network.IGuiHandler; 
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

public class CommonProxy implements IGuiHandler{
	
	public void registerRenders() {
		
	}

	public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		switch (ID) {
		case 0:
			return new ContainerBackPack(player.inventory, new InventoryBackPack(player.getHeldItem(), 9));
		}
		return null;
	}

	public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		switch (ID) {
		case 0:
			return new GuiBackPack(player.inventory, new InventoryBackPack(player.getHeldItem(), 9));
		}
		return null;
	}
	
	

}

package fr.kraniax.arrow.proxy;

import org.lwjgl.opengl.GL11;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.util.ResourceLocation;

public class GuiBackPack extends GuiContainer{
	

	public static final ResourceLocation texture = new ResourceLocation("textures/gui/container/quiver.png");
	protected InventoryBackPack inv;
	protected InventoryPlayer playerInv;
	public int rows;

	public GuiBackPack(InventoryPlayer playerInv, InventoryBackPack inv) {
		super(new ContainerBackPack(playerInv, inv));
		this.playerInv = playerInv;
		this.inv = inv;
		this.allowUserInput = false;
		this.rows = inv.getSizeInventory() / 9;
		this.ySize = 114 + this.rows * 18;
	}

	@Override
	protected void drawGuiContainerForegroundLayer(int p_146979_1_, int p_146979_2_) {
		this.fontRendererObj.drawString(I18n.format(this.inv.getInventoryName(), new Object[0]), 8, 6, 4210752);
		this.fontRendererObj.drawString(this.playerInv.hasCustomInventoryName() ? this.playerInv.getInventoryName() : I18n.format(this.playerInv.getInventoryName(), new Object[0]), 8, this.ySize - 96 + 2, 4210752);
	}

	@Override
	protected void drawGuiContainerBackgroundLayer(float prt, int p_146976_2_, int p_146976_3_) {
		GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
		this.mc.getTextureManager().bindTexture(texture);
		int k = (this.width - this.xSize) / 2;
		int l = (this.height - this.ySize) / 2;
		this.drawTexturedModalRect(k, l, 0, 0, this.xSize, this.rows * 18 + 17);
		this.drawTexturedModalRect(k, l + this.rows * 18 + 17, 0, 126, this.xSize, 96);
	}

}

package fr.kraniax.arrow.proxy;

import fr.kraniax.arrow.proxy.item.ItemArrow;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

public class ContainerBackPack extends Container{
	
	public InventoryBackPack invBackpack;
	public boolean needsUpdate;
	public int rows;

	public ContainerBackPack(InventoryPlayer playerInv, InventoryBackPack inv) {
		this.invBackpack = inv;
		this.rows = inv.getSizeInventory() / 9;
		int i = (this.rows - 4) * 18;
		int j;
		int k;

		for (j = 0; j < this.rows; ++j) {
			for (k = 0; k < 9; ++k) {
				this.addSlotToContainer(new SlotBackPack(inv, k + j * 9, 8 + k * 18, 18 + j * 18));
			}
		}

		for (j = 0; j < 3; ++j) {
			for (k = 0; k < 9; ++k) {
				this.addSlotToContainer(new Slot(playerInv, k + j * 9 + 9, 8 + k * 18, 103 + j * 18 + i));
			}
		}

		for (j = 0; j < 9; ++j) {
			this.addSlotToContainer(new Slot(playerInv, j, 8 + j * 18, 161 + i));
		}
	}

	@Override
	public boolean canInteractWith(EntityPlayer player) {
		return player.getHeldItem() != null && player.getHeldItem().getItem() == ItemArrow.quiver; 
	}

	public void writeToNBT(ItemStack stack) {
		if (!stack.hasTagCompound()) stack.setTagCompound(new NBTTagCompound());
		invBackpack.writeToNBT(stack.getTagCompound());
	}

	@Override
	public ItemStack transferStackInSlot(EntityPlayer player, int index) {
		ItemStack itemstack = null;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack()) {
			ItemStack itemstack1 = slot.getStack();
			itemstack = itemstack1.copy();

			// Prevents backpack-ception (backpack inside backpack) with shift-click
			if (itemstack.getItem() instanceof ItemBackPack) return null;

			if (index < this.invBackpack.getSizeInventory()) {
				if (!this.mergeItemStack(itemstack1, this.invBackpack.getSizeInventory(), this.inventorySlots.size(), true)) return null;
			} else if (!this.mergeItemStack(itemstack1, 0, this.invBackpack.getSizeInventory(), false)) { return null; }

			if (itemstack1.stackSize == 0) {
				slot.putStack((ItemStack) null);
			} else {
				slot.onSlotChanged();
				this.needsUpdate = true;
			}
		}

		return itemstack;
	}

	/**
	 * @param buttonPressed left click, right click, wheel click, etc.
	 * @param flag category (e.g.: hotbar keys)
	 */
	@Override
	public ItemStack slotClick(int slotIndex, int buttonPressed, int flag, EntityPlayer player) {
		// Prevents from removing current backpack
		if (flag == 2 && buttonPressed == player.inventory.currentItem) return null;
		if (slotIndex - this.invBackpack.getSizeInventory() - 27 == player.inventory.currentItem) return null;
		this.needsUpdate = true;
		return super.slotClick(slotIndex, buttonPressed, flag, player);
	}

	@Override
	public void onContainerClosed(EntityPlayer player) {
		this.writeToNBT(player.getHeldItem());
		super.onContainerClosed(player);
	}

}

kraniax

package fr.kraniax.arrow;

import cpw.mods.fml.common.Mod;   
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.Mod.Instance;
import cpw.mods.fml.common.SidedProxy;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import fr.kraniax.arrow.proxy.CommonProxy;
import fr.kraniax.arrow.proxy.item.ItemArrow;

@Mod(modid = Reference.MODID, name = Reference.MOD_NAME, version = Reference.VERSION)

public class Main {
	
	@SidedProxy(clientSide = Reference.CLIENT_PROXY, serverSide = Reference.SERVER_PROXY)
	public static CommonProxy proxy;
	
	@Instance("arrow")
	public static Main instance;
	
	@EventHandler
	public void preInit(FMLPreInitializationEvent e) {	
		ItemArrow.init();
		ItemArrow.GameRegistry();
	}
	
	
	@EventHandler
	public void init(FMLInitializationEvent e) {
		proxy.registerRenders();

	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent e) {
	
	}
	
	
	
	

}

Je crois que mon instance est juste. Mon modid est bien juste.

robin4002

Reference.MODID a bien comme valeur "arrow" ?
Si oui, le problème c'est que ton gui handler n'est pas enregistré.

kraniax

Oui "arrow" est bien mon MODID. Comment peut-on enregistré mon gui handler ? Faut-il que j'instancie la classe Common Proxy (Gui Handler) ? Si oui, comment ?

robin4002

NetworkRegistry.INSTANCE.registerGuiHandler(instance, new TonGuiHandler());

kraniax

C'est bon, ça marche. Merci de m'avoir aider.

Voici le code :

package fr.kraniax.arrow;

import cpw.mods.fml.common.Mod;     
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.Mod.Instance;
import cpw.mods.fml.common.SidedProxy;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.network.NetworkRegistry;
import fr.kraniax.arrow.item.ItemArrow;
import fr.kraniax.arrow.proxy.CommonProxy;
import net.minecraft.server.MinecraftServer;

@Mod(modid = Reference.MODID, name = Reference.MOD_NAME, version = Reference.VERSION)

public class Main {
	
	@SidedProxy(clientSide = Reference.CLIENT_PROXY, serverSide = Reference.SERVER_PROXY)
	public static CommonProxy proxy;
	
	@Mod.Instance(Reference.MODID)
	public static Main instance;
	

	
	@EventHandler
	public void preInit(FMLPreInitializationEvent e) {	
		ItemArrow.init();
		ItemArrow.GameRegistry();
		proxy.registerRenders();
		
	}
	
	
	@EventHandler
	public void init(FMLInitializationEvent e) {
		proxy.registerRenders();
		NetworkRegistry.INSTANCE.registerGuiHandler(instance, proxy);

	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent e) {
	
	}
	
	
	
	

}

package fr.kraniax.arrow.item;

import cpw.mods.fml.common.registry.GameRegistry; 
import fr.kraniax.arrow.Reference;
import fr.kraniax.arrow.item.quiver.ItemQuiver;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;

public class ItemArrow {
	
	public static Item compoundBow;
	public static Item quiver;
	
	public static void init() {
		compoundBow = new CompoundBow().setUnlocalizedName("compound_bow").setCreativeTab(CreativeTabs.tabCombat).setTextureName(Reference.MODID + ":compound_bow");
		quiver = new ItemQuiver().setUnlocalizedName("quiver").setCreativeTab(CreativeTabs.tabCombat).setTextureName(Reference.MODID + ":quiver");
	}
	
	public static void GameRegistry() {
		GameRegistry.registerItem(compoundBow, "compound_bow");
		GameRegistry.registerItem(quiver, "quiver");

	}
}

package fr.kraniax.arrow.proxy;

import cpw.mods.fml.common.network.IGuiHandler;
import fr.kraniax.arrow.item.quiver.ContainerQuiver;
import fr.kraniax.arrow.item.quiver.GuiQuiver;
import fr.kraniax.arrow.item.quiver.InventoryQuiver;
import fr.kraniax.arrow.item.quiver.ItemQuiver;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

public class CommonProxy implements IGuiHandler{
	
	public void registerRenders() {
		
	}
	
	@Override
	public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		switch (ID) {
		case 0:
			// The last parameter must be a multiple of 9 (e.g: 9, 18, 27, 54)
			// Condition to check if the player has the right item in hand
			if (player.getHeldItem() == null || !(player.getHeldItem().getItem() instanceof ItemQuiver)) return null;
			return new ContainerQuiver(player.inventory, new InventoryQuiver(player.getHeldItem(), 54));
		}
		return null;
	}

	@Override
	public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		switch (ID) {
		case 0:
			// The last parameter must be a multiple of 9 (e.g: 9, 18, 27, 54)
			// Condition to check if the player has the right item in hand
			if (player.getHeldItem() == null || !(player.getHeldItem().getItem() instanceof ItemQuiver)) return null;
			return new GuiQuiver(player.inventory, new InventoryQuiver(player.getHeldItem(), 54));
		}
		return null;
	}


}

package fr.kraniax.arrow.item.quiver;

import fr.kraniax.arrow.Reference; 
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraftforge.common.util.Constants;

public class InventoryQuiver implements IInventory {
	
	public ItemStack[] content;
	public int size;

	public InventoryQuiver(ItemStack container, int size) {
		this.size = size;
		this.content = new ItemStack[size];
		if (!container.hasTagCompound()) container.setTagCompound(new NBTTagCompound());
		this.readFromNBT(container.getTagCompound());
	}

	/**
	 * This methods reads the content of the NBTTagCompound inside the container
	 * 
	 * @param comp the container NBTTagCompound
	 */
	public void readFromNBT(NBTTagCompound comp) {
		NBTTagList nbtlist = comp.getTagList("Inventory", Constants.NBT.TAG_COMPOUND);
		for (int i = 0; i < nbtlist.tagCount(); i++) {
			NBTTagCompound comp1 = nbtlist.getCompoundTagAt(i);
			int slot = comp1.getInteger("Slot");
			this.content[slot] = ItemStack.loadItemStackFromNBT(comp1);
		}
	}

	/**
	 * This methods saves the content inside the container
	 * 
	 * @param comp the NBTTagCompound to write in
	 */
	public void writeToNBT(NBTTagCompound comp) {
		NBTTagList nbtlist = new NBTTagList();

		for (int i = 0; i < this.size; i++) {
			if (this.content[i] != null) {
				NBTTagCompound comp1 = new NBTTagCompound();
				comp1.setInteger("Slot", i);
				this.content[i].writeToNBT(comp1);
				nbtlist.appendTag(comp1);
			}
		}
		comp.setTag("Inventory", nbtlist);
	}

	@Override
	public int getSizeInventory() {
		return this.size;
	}

	@Override
	public ItemStack getStackInSlot(int index) {
		return this.content[index];
	}

	@Override
	public ItemStack decrStackSize(int index, int amount) {
		ItemStack stack = getStackInSlot(index);
		if (stack != null) {
			if (stack.stackSize > amount) {
				stack = stack.splitStack(amount);
				if (stack.stackSize == 0) this.content[index] = null;
			} else {
				this.content[index] = null;
			}
		}
		return stack;
	}

	@Override
	public ItemStack getStackInSlotOnClosing(int index) {
		ItemStack stack = getStackInSlot(index);
		if (stack != null) this.content[index] = null;
		return stack;
	}

	@Override
	public void setInventorySlotContents(int index, ItemStack stack) {
		this.content[index] = stack;
	}

	@Override
	public String getInventoryName() {
		return Reference.MODID + ".container.backpack";
	}

	@Override
	public boolean hasCustomInventoryName() {
		return false;
	}

	@Override
	public int getInventoryStackLimit() {
		return 64;
	}

	@Override
	public void markDirty() {}


	@Override
	public void openInventory() {}

	@Override
	public void closeInventory() {}
	
	@Override
	public boolean isUseableByPlayer(EntityPlayer player) {
		return true;
	}

	@Override
	public boolean isItemValidForSlot(int index, ItemStack stack) {
		return !(stack.getItem() instanceof ItemQuiver);
	}



}

package fr.kraniax.arrow.item.quiver;

import org.lwjgl.opengl.GL11;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.resources.I18n;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.util.ResourceLocation;

public class GuiQuiver extends GuiContainer{
	

	public static final ResourceLocation texture = new ResourceLocation("arrow", "textures/gui/container/generic_54.png");
	protected InventoryQuiver inv;
	protected InventoryPlayer playerInv;
	public int rows;

	public GuiQuiver(InventoryPlayer playerInv, InventoryQuiver inv) {
		super(new ContainerQuiver(playerInv, inv));
		this.playerInv = playerInv;
		this.inv = inv;
		this.allowUserInput = false;
		this.rows = inv.getSizeInventory() / 9;
		this.ySize = 114 + this.rows * 18;
	}

	@Override
	protected void drawGuiContainerForegroundLayer(int p_146979_1_, int p_146979_2_) {
		this.fontRendererObj.drawString(I18n.format(this.inv.getInventoryName(), new Object[0]), 8, 6, 4210752);
		this.fontRendererObj.drawString(this.playerInv.hasCustomInventoryName() ? this.playerInv.getInventoryName() : I18n.format(this.playerInv.getInventoryName(), new Object[0]), 8, this.ySize - 96 + 2, 4210752);
	}

	@Override
	protected void drawGuiContainerBackgroundLayer(float prt, int p_146976_2_, int p_146976_3_) {
		GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
		this.mc.getTextureManager().bindTexture(texture);
		int k = (this.width - this.xSize) / 2;
		int l = (this.height - this.ySize) / 2;
		this.drawTexturedModalRect(k, l, 0, 0, this.xSize, this.rows * 18 + 17);
		this.drawTexturedModalRect(k, l + this.rows * 18 + 17, 0, 126, this.xSize, 96);
	}

}

package fr.kraniax.arrow.item.quiver;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

public class ContainerQuiver extends Container{
	
	public InventoryQuiver invBackpack;
	public boolean needsUpdate;
	public int rows;

	public ContainerQuiver(InventoryPlayer playerInv, InventoryQuiver inv) {
		this.invBackpack = inv;
		this.rows = inv.getSizeInventory() / 9;
		int i = (this.rows - 4) * 18;
		int j;
		int k;

		for (j = 0; j < this.rows; ++j) {
			for (k = 0; k < 9; ++k) {
				this.addSlotToContainer(new SlotQuiver(inv, k + j * 9, 8 + k * 18, 18 + j * 18));
			}
		}

		for (j = 0; j < 3; ++j) {
			for (k = 0; k < 9; ++k) {
				this.addSlotToContainer(new Slot(playerInv, k + j * 9 + 9, 8 + k * 18, 103 + j * 18 + i));
			}
		}

		for (j = 0; j < 9; ++j) {
			this.addSlotToContainer(new Slot(playerInv, j, 8 + j * 18, 161 + i));
		}
	}

	@Override
	public boolean canInteractWith(EntityPlayer player) {
		return true; 
	}

	public void writeToNBT(ItemStack stack) {
		if (!stack.hasTagCompound()) stack.setTagCompound(new NBTTagCompound());
		invBackpack.writeToNBT(stack.getTagCompound());
	}

	@Override
	public ItemStack transferStackInSlot(EntityPlayer player, int index) {
		ItemStack itemstack = null;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack()) {
			ItemStack itemstack1 = slot.getStack();
			itemstack = itemstack1.copy();

			// Prevents backpack-ception (backpack inside backpack) with shift-click
			if (itemstack.getItem() instanceof ItemQuiver) return null;

			if (index < this.invBackpack.getSizeInventory()) {
				if (!this.mergeItemStack(itemstack1, this.invBackpack.getSizeInventory(), this.inventorySlots.size(), true)) return null;
			} else if (!this.mergeItemStack(itemstack1, 0, this.invBackpack.getSizeInventory(), false)) { return null; }

			if (itemstack1.stackSize == 0) {
				slot.putStack((ItemStack) null);
			} else {
				slot.onSlotChanged();
				this.needsUpdate = true;
			}
		}

		return itemstack;
	}

	/**
	 * @param buttonPressed left click, right click, wheel click, etc.
	 * @param flag category (e.g.: hotbar keys)
	 */
	@Override
	public ItemStack slotClick(int slotIndex, int buttonPressed, int flag, EntityPlayer player) {
		// Prevents from removing current backpack
		if (flag == 2 && buttonPressed == player.inventory.currentItem) return null;
		if (slotIndex - this.invBackpack.getSizeInventory() - 27 == player.inventory.currentItem) return null;
		this.needsUpdate = true;
		return super.slotClick(slotIndex, buttonPressed, flag, player);
	}

	@Override
	public void onContainerClosed(EntityPlayer player) {
		this.writeToNBT(player.getHeldItem());
		super.onContainerClosed(player);
	}

}

package fr.kraniax.arrow.item.quiver;

import cpw.mods.fml.common.registry.GameRegistry;
import fr.kraniax.arrow.Main;
import fr.kraniax.arrow.Reference;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

public class ItemQuiver extends Item{
	
	public static final String NAME = "quiver";

	public ItemQuiver() {
		this.maxStackSize = 1;
	}

	@Override
	public ItemStack onItemRightClick(ItemStack stack, World world, EntityPlayer player) {
		player.openGui(Main.instance, 0, world, (int) player.posX, (int) player.posY, (int) player.posZ);
		return stack;
	}

	/**
	 * @param stack
	 *            ItemStack used
	 * @param held
	 *            true if the player is holding this item
	 */
	@Override
	public void onUpdate(ItemStack stack, World world, Entity entity, int slot, boolean held) {}

}

	package fr.kraniax.arrow.item.quiver;
	
	import net.minecraft.inventory.IInventory;
	import net.minecraft.inventory.Slot;
	import net.minecraft.item.ItemStack;
	
	public class SlotQuiver extends Slot{
		
		public SlotQuiver(IInventory inv, int index, int x, int y) {
			super(inv, index, x, y);
		}
	
		/**
		 * Method used to prevent backpack-ception (backpacks inside backpacks)
		 */
		@Override
		public boolean isItemValid(ItemStack stack) {
			return !(stack.getItem() instanceof ItemQuiver);
		}
	
	}