Posted August 3, 201411 yr hello, I want to operate a piece of code when a item is right clicked. I get a crash from the following code: @SubscribeEvent public void ExpCatalyst (PlayerInteractEvent event) { //crash here if(event.entityPlayer.getItemInUse().getItem().getUnlocalizedName().contains(ModItems.expCatalyst.getUnlocalizedName()) && ModItems.expCatalyst.getUnlocalizedName().contains(event.entityPlayer.getItemInUse().getItem().getUnlocalizedName()) ) the crash report is here ---- Minecraft Crash Report ---- // You should try our sister game, Minceraft! Time: 16:05 03/08/14 Description: Unexpected error java.lang.NullPointerException: Unexpected error at com.thewaterwell.letsmodreboot.handler.EventHandler.ExpCatalyst(EventHandler.java:28) at cpw.mods.fml.common.eventhandler.ASMEventHandler_6_EventHandler_ExpCatalyst_PlayerInteractEvent.invoke(.dynamic) at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51) at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122) at net.minecraftforge.event.ForgeEventFactory.onPlayerInteract(ForgeEventFactory.java:67) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1527) at net.minecraft.client.Minecraft.runTick(Minecraft.java:2043) at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1038) at net.minecraft.client.Minecraft.run(Minecraft.java:961) 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:134) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) 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 GradleStart.bounce(GradleStart.java:108) at GradleStart.startClient(GradleStart.java:101) at GradleStart.main(GradleStart.java:56) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Stacktrace: at com.thewaterwell.letsmodreboot.handler.EventHandler.ExpCatalyst(EventHandler.java:28) at cpw.mods.fml.common.eventhandler.ASMEventHandler_6_EventHandler_ExpCatalyst_PlayerInteractEvent.invoke(.dynamic) at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51) at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122) at net.minecraftforge.event.ForgeEventFactory.onPlayerInteract(ForgeEventFactory.java:67) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1527) -- Affected level -- Details: Level name: MpServer All players: 1 total; [EntityClientPlayerMP['ForgeDevName'/105, l='MpServer', x=-703.45, y=5.62, z=-527.30]] Chunk stats: MultiplayerChunkCache: 625, 625 Level seed: 0 Level generator: ID 01 - flat, ver 0. Features enabled: false Level generator options: Level spawn location: World: (-704,4,-540), Chunk: (at 0,0,4 in -44,-34; contains blocks -704,0,-544 to -689,255,-529), Region: (-2,-2; contains chunks -64,-64 to -33,-33, blocks -1024,0,-1024 to -513,255,-513) Level time: 117721 game time, 7843 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: survival (ID 0). Hardcore: false. Cheats: false Forced entities: 55 total; [EntityCow['Cow'/30, l='MpServer', x=-768.28, y=4.00, z=-553.28], EntityCow['Cow'/31, l='MpServer', x=-770.69, y=4.00, z=-545.25], EntityCow['Cow'/32, l='MpServer', x=-774.06, y=4.00, z=-517.03], EntityChicken['Chicken'/33, l='MpServer', x=-766.47, y=4.00, z=-561.47], EntityCow['Cow'/34, l='MpServer', x=-762.28, y=4.00, z=-497.31], EntityChicken['Chicken'/35, l='MpServer', x=-765.38, y=4.00, z=-482.44], EntityChicken['Chicken'/36, l='MpServer', x=-759.59, y=4.00, z=-487.44], EntityChicken['Chicken'/37, l='MpServer', x=-764.56, y=4.00, z=-467.44], EntityCow['Cow'/38, l='MpServer', x=-748.97, y=4.00, z=-548.94], EntityChicken['Chicken'/39, l='MpServer', x=-739.35, y=4.00, z=-540.41], EntitySheep['Sheep'/40, l='MpServer', x=-738.97, y=4.00, z=-496.06], EntitySheep['Sheep'/41, l='MpServer', x=-737.25, y=4.00, z=-491.63], EntityChicken['Chicken'/42, l='MpServer', x=-737.53, y=4.00, z=-484.53], EntitySheep['Sheep'/43, l='MpServer', x=-735.94, y=4.00, z=-479.97], EntityCow['Cow'/44, l='MpServer', x=-744.34, y=4.00, z=-452.22], EntitySheep['Sheep'/45, l='MpServer', x=-735.13, y=4.00, z=-568.81], EntitySheep['Sheep'/46, l='MpServer', x=-726.69, y=4.00, z=-483.84], EntityCow['Cow'/47, l='MpServer', x=-730.19, y=4.00, z=-470.16], EntitySheep['Sheep'/48, l='MpServer', x=-719.22, y=4.00, z=-541.75], EntitySheep['Sheep'/49, l='MpServer', x=-717.09, y=4.00, z=-490.94], EntityChicken['Chicken'/50, l='MpServer', x=-710.44, y=4.00, z=-465.38], EntityChicken['Chicken'/51, l='MpServer', x=-712.44, y=4.00, z=-454.41], EntitySheep['Sheep'/53, l='MpServer', x=-689.25, y=4.00, z=-525.34], EntityClientPlayerMP['ForgeDevName'/105, l='MpServer', x=-703.45, y=5.62, z=-527.30], EntityCow['Cow'/54, l='MpServer', x=-684.97, y=4.00, z=-500.91], EntityChicken['Chicken'/55, l='MpServer', x=-700.47, y=4.00, z=-485.53], EntitySheep['Sheep'/56, l='MpServer', x=-689.22, y=4.00, z=-491.84], EntityChicken['Chicken'/60, l='MpServer', x=-672.66, y=4.00, z=-584.44], EntityChicken['Chicken'/61, l='MpServer', x=-687.53, y=4.00, z=-519.44], EntityCow['Cow'/62, l='MpServer', x=-676.03, y=4.00, z=-494.09], EntityCow['Cow'/63, l='MpServer', x=-679.69, y=4.00, z=-472.25], EntitySheep['Sheep'/68, l='MpServer', x=-655.63, y=4.00, z=-602.25], EntitySheep['Sheep'/69, l='MpServer', x=-662.81, y=4.00, z=-605.63], EntityCow['Cow'/70, l='MpServer', x=-661.84, y=4.00, z=-538.84], EntitySheep['Sheep'/71, l='MpServer', x=-662.69, y=4.00, z=-528.22], EntityCow['Cow'/72, l='MpServer', x=-671.25, y=4.00, z=-484.69], EntityPig['Pig'/73, l='MpServer', x=-658.78, y=4.00, z=-481.84], EntityChicken['Chicken'/74, l='MpServer', x=-664.53, y=4.00, z=-456.44], EntityChicken['Chicken'/82, l='MpServer', x=-649.44, y=4.00, z=-592.56], EntityChicken['Chicken'/83, l='MpServer', x=-651.38, y=4.00, z=-578.56], EntityChicken['Chicken'/84, l='MpServer', x=-653.38, y=4.00, z=-571.63], EntityChicken['Chicken'/85, l='MpServer', x=-642.47, y=4.00, z=-567.56], EntityPig['Pig'/86, l='MpServer', x=-652.56, y=4.00, z=-567.22], EntityPig['Pig'/87, l='MpServer', x=-645.13, y=4.00, z=-534.56], EntityCow['Cow'/88, l='MpServer', x=-650.91, y=4.00, z=-529.84], EntityPig['Pig'/89, l='MpServer', x=-646.19, y=4.00, z=-517.56], EntitySheep['Sheep'/90, l='MpServer', x=-654.13, y=4.00, z=-489.09], EntityCow['Cow'/91, l='MpServer', x=-649.25, y=4.00, z=-491.78], EntitySheep['Sheep'/92, l='MpServer', x=-642.38, y=4.00, z=-494.19], EntityCow['Cow'/93, l='MpServer', x=-660.06, y=4.00, z=-466.09], EntityChicken['Chicken'/94, l='MpServer', x=-658.34, y=4.00, z=-459.56], EntityChicken['Chicken'/97, l='MpServer', x=-622.53, y=4.00, z=-599.53], EntityPig['Pig'/98, l='MpServer', x=-632.78, y=4.00, z=-563.09], EntityCow['Cow'/99, l='MpServer', x=-635.22, y=4.00, z=-489.84], EntityChicken['Chicken'/100, l='MpServer', x=-638.56, y=4.00, z=-459.59]] Retry entities: 0 total; [] Server brand: fml,forge Server type: Integrated singleplayer server Stacktrace: at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:417) at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2567) at net.minecraft.client.Minecraft.run(Minecraft.java:990) 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:134) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) 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 GradleStart.bounce(GradleStart.java:108) at GradleStart.startClient(GradleStart.java:101) at GradleStart.main(GradleStart.java:56) -- System Details -- Details: Minecraft Version: 1.7.10 Operating System: Windows Vista (amd64) version 6.0 Java Version: 1.8.0_05, Oracle Corporation Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 912597232 bytes (870 MB) / 1056309248 bytes (1007 MB) up to 1056309248 bytes (1007 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 v7.10.25.1188 Minecraft Forge 10.13.0.1188 4 mods loaded, 4 mods active mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available FML{7.10.25.1188} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.0.1188.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Forge{10.13.0.1188} [Minecraft Forge] (forgeSrc-1.7.10-10.13.0.1188.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available LetsModReboot{1.7.10-1.4} [learning from pahimar] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Launched Version: 1.7.10 LWJGL: 2.9.1 OpenGL: GeForce 9800 GT/PCIe/SSE2 GL version 3.3.0, 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) From what I tried, I saw the crash was caused because "getItemInUse()" returned null, but I right clicked the Item. If anyone could help, I would highly appreciate.
August 3, 201411 yr Please check if the item is null before you execute that code. I believe that it returns null if your hand is empty. Here could be your advertisement!
August 3, 201411 yr Author my hand was not empty, I was holding the Item. I tried holding bottles of enchanting from vanilla and empty hand, all crashed.
August 3, 201411 yr Wait, this is a custom Item, right? Why don't you check if its right clicked inside the Item? like this: public class ItemDust extends Item { public ItemDust(int maxStackSize, String name) { setUnlocalizedName(name); setTextureName(DimensionShift.MODID + ":" + name); } @Override public boolean onItemUse(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int side, float px, float py, float pz){ System.out.println("ON ITEM USE"); return true; } } Here could be your advertisement!
August 3, 201411 yr Author hi, I tried it, but in the code I try to create and set NBT to the stack but it crashes with the following: ---- Minecraft Crash Report ---- // But it works on my machine. Time: 17:27 03/08/14 Description: Unexpected error java.lang.NullPointerException: Unexpected error at com.thewaterwell.letsmodreboot.utility.NBTHelper.initNBTTagCompound(NBTHelper.java:29) at com.thewaterwell.letsmodreboot.utility.NBTHelper.getInt(NBTHelper.java:125) at com.thewaterwell.letsmodreboot.handler.EventHandler.ExpCatalyst(EventHandler.java:42) at cpw.mods.fml.common.eventhandler.ASMEventHandler_6_EventHandler_ExpCatalyst_PlayerInteractEvent.invoke(.dynamic) at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51) at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122) at net.minecraftforge.event.ForgeEventFactory.onPlayerInteract(ForgeEventFactory.java:67) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1555) at net.minecraft.client.Minecraft.runTick(Minecraft.java:2043) at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1038) at net.minecraft.client.Minecraft.run(Minecraft.java:961) 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:134) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) 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 GradleStart.bounce(GradleStart.java:108) at GradleStart.startClient(GradleStart.java:101) at GradleStart.main(GradleStart.java:56) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Stacktrace: at com.thewaterwell.letsmodreboot.utility.NBTHelper.initNBTTagCompound(NBTHelper.java:29) at com.thewaterwell.letsmodreboot.utility.NBTHelper.getInt(NBTHelper.java:125) at com.thewaterwell.letsmodreboot.handler.EventHandler.ExpCatalyst(EventHandler.java:42) at cpw.mods.fml.common.eventhandler.ASMEventHandler_6_EventHandler_ExpCatalyst_PlayerInteractEvent.invoke(.dynamic) at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51) at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122) at net.minecraftforge.event.ForgeEventFactory.onPlayerInteract(ForgeEventFactory.java:67) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1555) -- Affected level -- Details: Level name: MpServer All players: 1 total; [EntityClientPlayerMP['ForgeDevName'/208, l='MpServer', x=-703.36, y=5.62, z=-526.23]] Chunk stats: MultiplayerChunkCache: 625, 625 Level seed: 0 Level generator: ID 01 - flat, ver 0. Features enabled: false Level generator options: Level spawn location: World: (-704,4,-540), Chunk: (at 0,0,4 in -44,-34; contains blocks -704,0,-544 to -689,255,-529), Region: (-2,-2; contains chunks -64,-64 to -33,-33, blocks -1024,0,-1024 to -513,255,-513) Level time: 122613 game time, 57 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: survival (ID 0). Hardcore: false. Cheats: false Forced entities: 57 total; [EntityCow['Cow'/133, l='MpServer', x=-765.69, y=4.00, z=-561.75], EntityCow['Cow'/134, l='MpServer', x=-771.31, y=4.00, z=-552.75], EntityCow['Cow'/135, l='MpServer', x=-775.19, y=4.00, z=-519.84], EntityChicken['Chicken'/136, l='MpServer', x=-758.56, y=4.00, z=-552.56], EntityCow['Cow'/137, l='MpServer', x=-756.84, y=4.00, z=-555.03], EntityCow['Cow'/138, l='MpServer', x=-757.94, y=4.00, z=-502.88], EntityChicken['Chicken'/139, l='MpServer', x=-765.38, y=4.00, z=-482.44], EntityChicken['Chicken'/140, l='MpServer', x=-759.59, y=4.00, z=-487.44], EntityChicken['Chicken'/141, l='MpServer', x=-759.66, y=4.00, z=-469.56], EntityCow['Cow'/142, l='MpServer', x=-760.31, y=4.00, z=-468.66], EntitySheep['Sheep'/143, l='MpServer', x=-743.97, y=4.00, z=-578.03], EntityChicken['Chicken'/144, l='MpServer', x=-738.56, y=4.00, z=-541.44], EntitySheep['Sheep'/145, l='MpServer', x=-736.81, y=4.00, z=-535.19], EntitySheep['Sheep'/146, l='MpServer', x=-738.53, y=4.00, z=-489.25], EntitySheep['Sheep'/147, l='MpServer', x=-744.91, y=4.00, z=-496.19], EntityChicken['Chicken'/148, l='MpServer', x=-737.53, y=4.00, z=-484.53], EntitySheep['Sheep'/149, l='MpServer', x=-737.13, y=4.00, z=-478.09], EntityChicken['Chicken'/150, l='MpServer', x=-724.59, y=4.00, z=-527.59], EntitySheep['Sheep'/151, l='MpServer', x=-724.81, y=4.00, z=-500.41], EntitySheep['Sheep'/152, l='MpServer', x=-724.16, y=4.00, z=-491.16], EntityCow['Cow'/153, l='MpServer', x=-730.19, y=4.00, z=-470.16], EntitySheep['Sheep'/154, l='MpServer', x=-720.94, y=4.00, z=-533.06], EntityChicken['Chicken'/155, l='MpServer', x=-704.53, y=4.00, z=-466.47], EntityChicken['Chicken'/156, l='MpServer', x=-710.66, y=4.00, z=-459.81], EntityChicken['Chicken'/158, l='MpServer', x=-691.44, y=4.00, z=-604.56], EntityCow['Cow'/159, l='MpServer', x=-698.13, y=4.00, z=-513.09], EntityChicken['Chicken'/160, l='MpServer', x=-693.94, y=4.00, z=-480.72], EntitySheep['Sheep'/161, l='MpServer', x=-688.16, y=4.00, z=-496.34], EntityClientPlayerMP['ForgeDevName'/208, l='MpServer', x=-703.36, y=5.62, z=-526.23], EntityChicken['Chicken'/165, l='MpServer', x=-677.38, y=4.00, z=-583.56], EntityCow['Cow'/166, l='MpServer', x=-682.03, y=4.00, z=-487.06], EntityCow['Cow'/167, l='MpServer', x=-682.22, y=4.00, z=-477.75], EntitySheep['Sheep'/170, l='MpServer', x=-662.81, y=4.00, z=-605.63], EntityChicken['Chicken'/171, l='MpServer', x=-656.38, y=4.00, z=-581.44], EntityPig['Pig'/172, l='MpServer', x=-657.72, y=4.00, z=-566.91], EntityCow['Cow'/173, l='MpServer', x=-654.75, y=4.00, z=-549.75], EntitySheep['Sheep'/174, l='MpServer', x=-662.69, y=4.00, z=-528.22], EntityCow['Cow'/175, l='MpServer', x=-652.94, y=4.00, z=-542.84], EntityCow['Cow'/176, l='MpServer', x=-671.25, y=4.00, z=-484.69], EntityPig['Pig'/177, l='MpServer', x=-670.88, y=4.00, z=-474.63], EntityChicken['Chicken'/178, l='MpServer', x=-664.53, y=4.00, z=-457.38], EntityChicken['Chicken'/179, l='MpServer', x=-649.56, y=4.00, z=-451.56], EntityChicken['Chicken'/188, l='MpServer', x=-649.44, y=4.00, z=-592.56], EntitySheep['Sheep'/189, l='MpServer', x=-645.06, y=4.00, z=-606.03], EntityChicken['Chicken'/190, l='MpServer', x=-633.59, y=4.00, z=-571.44], EntityChicken['Chicken'/191, l='MpServer', x=-653.38, y=4.00, z=-571.63], EntityPig['Pig'/192, l='MpServer', x=-645.13, y=4.00, z=-534.56], EntityPig['Pig'/193, l='MpServer', x=-644.19, y=4.00, z=-516.75], EntitySheep['Sheep'/194, l='MpServer', x=-656.97, y=4.00, z=-497.94], EntityCow['Cow'/195, l='MpServer', x=-647.75, y=4.00, z=-496.03], EntitySheep['Sheep'/196, l='MpServer', x=-635.09, y=4.00, z=-488.91], EntityCow['Cow'/197, l='MpServer', x=-659.13, y=4.00, z=-477.81], EntityPig['Pig'/200, l='MpServer', x=-627.94, y=4.00, z=-557.97], EntityCow['Cow'/201, l='MpServer', x=-638.88, y=4.00, z=-492.91], EntityChicken['Chicken'/202, l='MpServer', x=-639.34, y=4.00, z=-463.53], EntityChicken['Chicken'/203, l='MpServer', x=-627.44, y=4.00, z=-454.53], EntitySheep['Sheep'/206, l='MpServer', x=-624.38, y=4.00, z=-456.75]] Retry entities: 0 total; [] Server brand: fml,forge Server type: Integrated singleplayer server Stacktrace: at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:417) at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2567) at net.minecraft.client.Minecraft.run(Minecraft.java:990) 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:134) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) 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 GradleStart.bounce(GradleStart.java:108) at GradleStart.startClient(GradleStart.java:101) at GradleStart.main(GradleStart.java:56) -- System Details -- Details: Minecraft Version: 1.7.10 Operating System: Windows Vista (amd64) version 6.0 Java Version: 1.8.0_05, Oracle Corporation Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 970087712 bytes (925 MB) / 1056309248 bytes (1007 MB) up to 1056309248 bytes (1007 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 v7.10.25.1188 Minecraft Forge 10.13.0.1188 4 mods loaded, 4 mods active mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available FML{7.10.25.1188} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.0.1188.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available Forge{10.13.0.1188} [Minecraft Forge] (forgeSrc-1.7.10-10.13.0.1188.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available LetsModReboot{1.7.10-1.4} [learning from pahimar] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available Launched Version: 1.7.10 LWJGL: 2.9.1 OpenGL: GeForce 9800 GT/PCIe/SSE2 GL version 3.3.0, 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) [spoiler/]
August 3, 201411 yr Author ok here it is... this is what is in the item's code regarding this not working. I registered it and maybe added a crafting recipe, that is all. public class ItemExpCatalyst extends ItemMyMod { public ItemExpCatalyst() { super(); this.setUnlocalizedName("expCatalyst"); this.setMaxStackSize(1); } @Override public boolean onItemUse(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int side, float px, float py, float pz) { System.out.println("ON ITEM USE"); if (player.experienceLevel>0 && player.isSneaking()) { NBTHelper.setInteger(itemstack,"exp stored", (NBTHelper.getInt(itemstack,"exp stored")+1)); System.out.println("EXP Stored: "+NBTHelper.getInt(itemstack,"exp stored")); if(!player.capabilities.isCreativeMode) { player.addExperienceLevel(-1); } } if (!player.isSneaking()) { System.out.println("not crouching"); System.out.println(NBTHelper.getInt(itemstack,"exp stored")); if (NBTHelper.getInt(itemstack, "exp stored")>0) { System.out.println("outputing levels..."); player.addExperienceLevel(1); if(!player.capabilities.isCreativeMode) { NBTHelper.setInteger(itemstack,"exp stored", NBTHelper.getInt(itemstack,"exp stored")-1); } } } return true; } }
August 3, 201411 yr Did you create a NBTHelper class in an utility package? @coolboy4531 looks like the item class is not the problem: java.lang.NullPointerException: Unexpected error at com.thewaterwell.letsmodreboot.utility.NBTHelper.initNBTTagCompound(NBTHelper.java:29) at com.thewaterwell.letsmodreboot.utility.NBTHelper.getInt(NBTHelper.java:125) at com.thewaterwell.letsmodreboot.handler.EventHandler.ExpCatalyst(EventHandler.java:42) EDIT: Please remove everything from your ExpCatalyst event handler. Here could be your advertisement!
August 3, 201411 yr Author I removed it from the event handler and yes, I have a NBTHelper class in the utility package. since then, it stopped crashing but it does not print the "ON USE ITEM". I think it is because I am regisrting the Item as the top function only but I am uncertain.
August 3, 201411 yr What is in your ItemMyMod class? Please try to expand "Item" Here could be your advertisement!
August 3, 201411 yr Author why don't you use onItemRhightClick Method (used in snow balls/eggs)? I did not really understand how to. I would be greatful if you would show me how What is in your ItemMyMod class? Please try to expand "Item" here is the code for ItemMyMod public class ItemMyMod extends Item { public ItemMyMod() { super(); this.setCreativeTab(CreativeTabLMRB.LMRB_TAB); } @Override public String getUnlocalizedName() { return String.format("item.%s%s", Reference.MOD_ID.toLowerCase() + ":", getUnwrappedUnlocalizedName(super.getUnlocalizedName())); } @Override public String getUnlocalizedName(ItemStack itemStack) { return String.format("item.%s%s", Reference.MOD_ID.toLowerCase() + ":", getUnwrappedUnlocalizedName(super.getUnlocalizedName())); } @Override @SideOnly(Side.CLIENT) public void registerIcons(IIconRegister iconRegister) { itemIcon = iconRegister.registerIcon(this.getUnlocalizedName().substring(this.getUnlocalizedName().indexOf(".") + 1)); } protected String getUnwrappedUnlocalizedName(String unlocalizedName) { return unlocalizedName.substring(unlocalizedName.indexOf(".") + 1); } } this is from pahimar's tutorial.
August 3, 201411 yr What exactly do you want to happen if you right click something? Here could be your advertisement!
August 3, 201411 yr Author what I am aiming for is for the item ItemExpCatalyst to serve as an exp "battery". sneak right click to charge and right click to absorb. p.s. I am going to try using onItemRightClick, to check.
August 3, 201411 yr Yeah, that should work. If i am right onItemUse is only triggered if you right click a block in the world.(and gives you the coords of that block) If you want to trigger it always you should use the rightClick method. Sry, i should have mentioned that earlier. Here could be your advertisement!
August 3, 201411 yr Author ok, am trying to find a place where it runs and does not just sit there EDIT: found it, now to get the if working...
August 3, 201411 yr Try to use /** * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer */ public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer) { //YOUR CODE HERE return par1ItemStack; } instead of the onItemUse thing. Here could be your advertisement!
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