[1.11] [solved] Casting Capabilities.

Lambda · December 7, 2016

Hey there,

So I'm having an issue with one of my items, in which I'm casting IEnergyStorage to Capability.Energy.

However, I'm getting a crash saying that I cannot cast it to each other. This worked in 1.10 however.

java.lang.ClassCastException: com.lambda.plentifulmisc.items.base.ItemEnergy$EnergyCapabilityProvider$1 cannot be cast to net.minecraftforge.energy.IEnergyStorage
at com.lambda.plentifulmisc.items.base.ItemEnergy.getMaxEnergyStored(ItemEnergy.java:175)
at com.lambda.plentifulmisc.items.ItemDrill.addDrillStack(ItemDrill.java:324)
at com.lambda.plentifulmisc.items.ItemDrill.getSubItems(ItemDrill.java:318)
at net.minecraft.creativetab.CreativeTabs.displayAllRelevantItems(CreativeTabs.java:301)
at net.minecraft.client.gui.inventory.GuiContainerCreative.setCurrentCreativeTab(GuiContainerCreative.java:493)
at net.minecraft.client.gui.inventory.GuiContainerCreative.mouseReleased(GuiContainerCreative.java:464)
at net.minecraft.client.gui.GuiScreen.handleMouseInput(GuiScreen.java:621)
at net.minecraft.client.gui.inventory.GuiContainerCreative.handleMouseInput(GuiContainerCreative.java:585)
at net.minecraft.client.gui.GuiScreen.handleInput(GuiScreen.java:576)
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1790)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1117)
at net.minecraft.client.Minecraft.run(Minecraft.java:405)
at net.minecraft.client.main.Main.main(Main.java:118)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)

Here is the item:

    @Override
    @SideOnly(Side.CLIENT)
    public void getSubItems(Item item, CreativeTabs tabs, NonNullList list){
        ItemStack stackFull = new ItemStack(this);
        if(stackFull.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stackFull.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                this.setEnergy(stackFull, storage.getMaxEnergyStored());
                list.add(stackFull);
            }
        }

        ItemStack stackEmpty = new ItemStack(this);
        this.setEnergy(stackEmpty, 0);
        list.add(stackEmpty);
    }

    @Override
    public boolean showDurabilityBar(ItemStack itemStack){
        return true;
    }

    @Override
    public double getDurabilityForDisplay(ItemStack stack){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                double maxAmount = storage.getMaxEnergyStored();
                double energyDif = maxAmount-storage.getEnergyStored();
                return energyDif/maxAmount;
            }
        }
        return super.getDurabilityForDisplay(stack);
    }

    @Override
    public int getRGBDurabilityForDisplay(ItemStack stack){
        EntityPlayer player = PlentifulMisc.proxy.getCurrentPlayer();
        if(player != null && player.worldObj != null){
            float[] color = AssetUtil.getRGB(player.worldObj.getTotalWorldTime()%256);
            return MathHelper.rgb(color[0]/255F, color[1]/255F, color[2]/255F);
        }
        return super.getRGBDurabilityForDisplay(stack);
    }

    public void setEnergy(ItemStack stack, int energy){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).setEnergyStored(energy);
            }
        }
    }

    public int receiveEnergyInternal(ItemStack stack, int maxReceive, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).receiveEnergyInternal(maxReceive, simulate);
            }
        }
        return 0;
    }

    public int extractEnergyInternal(ItemStack stack, int maxExtract, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).extractEnergyInternal(maxExtract, simulate);
            }
        }
        return 0;
    }

    public int receiveEnergy(ItemStack stack, int maxReceive, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.receiveEnergy(maxReceive, simulate);
            }
        }
        return 0;
    }

    public int extractEnergy(ItemStack stack, int maxExtract, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.extractEnergy(maxExtract, simulate);
            }
        }
        return 0;
    }

    public int getEnergyStored(ItemStack stack){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.getEnergyStored();
            }
        }
        return 0;
    }

All these lines do this:

        ItemStack stackFull = new ItemStack(this);
        if(stackFull.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stackFull.getCapability(CapabilityEnergy.ENERGY, null);

Thanks.

Lambda · December 8, 2016

Usually, I don't like doing this, find it kinda scummy :^|

*cough*

Well, maybe not all that useless, Some Update on the situation:

Anytime I open the Creative Tab it crashes with the same error, but during Pre-Init I get:

[19:40:01] [Client thread/INFO]: Starting JEI...
[19:40:01] [Client thread/ERROR]: Creative tab crashed while getting items. Some items from this tab will be missing from the item list. com.lambda.plentifulmisc.creative.CreativeTab@31092e1f
java.lang.ClassCastException: com.lambda.plentifulmisc.items.base.ItemEnergy$EnergyCapabilityProvider$1 cannot be cast to net.minecraftforge.energy.IEnergyStorage
at com.lambda.plentifulmisc.items.base.ItemEnergy.getSubItems(ItemEnergy.java:72) ~[itemEnergy.class:?]
at net.minecraft.creativetab.CreativeTabs.displayAllRelevantItems(CreativeTabs.java:301) ~[CreativeTabs.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.create(ItemStackListFactory.java:33) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.VanillaPlugin.registerIngredients(VanillaPlugin.java:92) [VanillaPlugin.class:?]
at mezz.jei.JeiStarter.registerIngredients(JeiStarter.java:110) [JeiStarter.class:?]
at mezz.jei.JeiStarter.start(JeiStarter.java:36) [JeiStarter.class:?]
at mezz.jei.ProxyCommonClient.loadComplete(ProxyCommonClient.java:111) [ProxyCommonClient.class:?]
at mezz.jei.JustEnoughItems.loadComplete(JustEnoughItems.java:53) [JustEnoughItems.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:602) [FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243) [LoadController.class:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221) [LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:804) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:560) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:385) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]
[19:40:01] [Client thread/WARN]: Found an empty subItem of net.minecraft.item.ItemAir@16a3d9a7
[19:40:01] [Client thread/WARN]: Caught a crash while getting sub-items of com.lambda.plentifulmisc.items.ItemBattery@4111c29d
java.lang.ClassCastException: com.lambda.plentifulmisc.items.base.ItemEnergy$EnergyCapabilityProvider$1 cannot be cast to net.minecraftforge.energy.IEnergyStorage
at com.lambda.plentifulmisc.items.base.ItemEnergy.getSubItems(ItemEnergy.java:72) ~[itemEnergy.class:?]
at mezz.jei.util.StackHelper.getSubtypes(StackHelper.java:242) [stackHelper.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.addItemAndSubItems(ItemStackListFactory.java:66) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.create(ItemStackListFactory.java:55) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.VanillaPlugin.registerIngredients(VanillaPlugin.java:92) [VanillaPlugin.class:?]
at mezz.jei.JeiStarter.registerIngredients(JeiStarter.java:110) [JeiStarter.class:?]
at mezz.jei.JeiStarter.start(JeiStarter.java:36) [JeiStarter.class:?]
at mezz.jei.ProxyCommonClient.loadComplete(ProxyCommonClient.java:111) [ProxyCommonClient.class:?]
at mezz.jei.JustEnoughItems.loadComplete(JustEnoughItems.java:53) [JustEnoughItems.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:602) [FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243) [LoadController.class:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221) [LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:804) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:560) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:385) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]
[19:40:01] [Client thread/WARN]: Caught a crash while getting sub-items of com.lambda.plentifulmisc.items.ItemDrill@80cb5f6
java.lang.ClassCastException: com.lambda.plentifulmisc.items.base.ItemEnergy$EnergyCapabilityProvider$1 cannot be cast to net.minecraftforge.energy.IEnergyStorage
at com.lambda.plentifulmisc.items.base.ItemEnergy.getMaxEnergyStored(ItemEnergy.java:173) ~[itemEnergy.class:?]
at com.lambda.plentifulmisc.items.ItemDrill.addDrillStack(ItemDrill.java:323) ~[itemDrill.class:?]
at com.lambda.plentifulmisc.items.ItemDrill.getSubItems(ItemDrill.java:317) ~[itemDrill.class:?]
at mezz.jei.util.StackHelper.getSubtypes(StackHelper.java:242) [stackHelper.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.addItemAndSubItems(ItemStackListFactory.java:66) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.create(ItemStackListFactory.java:55) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.VanillaPlugin.registerIngredients(VanillaPlugin.java:92) [VanillaPlugin.class:?]
at mezz.jei.JeiStarter.registerIngredients(JeiStarter.java:110) [JeiStarter.class:?]
at mezz.jei.JeiStarter.start(JeiStarter.java:36) [JeiStarter.class:?]
at mezz.jei.ProxyCommonClient.loadComplete(ProxyCommonClient.java:111) [ProxyCommonClient.class:?]
at mezz.jei.JustEnoughItems.loadComplete(JustEnoughItems.java:53) [JustEnoughItems.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:602) [FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243) [LoadController.class:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221) [LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:804) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:560) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:385) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]
[19:40:01] [Client thread/WARN]: Caught a crash while getting sub-items of com.lambda.plentifulmisc.items.ItemBattery@2a7eb66e
java.lang.ClassCastException: com.lambda.plentifulmisc.items.base.ItemEnergy$EnergyCapabilityProvider$1 cannot be cast to net.minecraftforge.energy.IEnergyStorage
at com.lambda.plentifulmisc.items.base.ItemEnergy.getSubItems(ItemEnergy.java:72) ~[itemEnergy.class:?]
at mezz.jei.util.StackHelper.getSubtypes(StackHelper.java:242) [stackHelper.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.addItemAndSubItems(ItemStackListFactory.java:66) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackListFactory.create(ItemStackListFactory.java:55) [itemStackListFactory.class:?]
at mezz.jei.plugins.vanilla.VanillaPlugin.registerIngredients(VanillaPlugin.java:92) [VanillaPlugin.class:?]
at mezz.jei.JeiStarter.registerIngredients(JeiStarter.java:110) [JeiStarter.class:?]
at mezz.jei.JeiStarter.start(JeiStarter.java:36) [JeiStarter.class:?]
at mezz.jei.ProxyCommonClient.loadComplete(ProxyCommonClient.java:111) [ProxyCommonClient.class:?]
at mezz.jei.JustEnoughItems.loadComplete(JustEnoughItems.java:53) [JustEnoughItems.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:602) [FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:243) [LoadController.class:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:221) [LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:145) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:804) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:331) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:560) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:385) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]

I still can't find a reason, I'm almost certain these can be cast, especially since the IDE isn't giving me an error

Animefan8888 · December 8, 2016

You created your own Provider and did not post the class.

Lambda · December 8, 2016

Oh I thought I had a spoiler with that

My Bad.

Here is the ItemEnergy:

public abstract class ItemEnergy extends ItemBase{

    private final int maxPower;
    private final int transfer;

    public ItemEnergy(int maxPower, int transfer, String name){
        super(name);
        this.maxPower = maxPower;
        this.transfer = transfer;

        this.setHasSubtypes(true);
        this.setMaxStackSize(1);
    }

    @Override
    public boolean getShareTag(){
        return true;
    }

    @Override
    public void addInformation(ItemStack stack, EntityPlayer player, List list, boolean bool){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                NumberFormat format = NumberFormat.getInstance();
                list.add(format.format(storage.getEnergyStored())+"/"+format.format(storage.getMaxEnergyStored())+" Crystal Flux");
            }
        }
    }

    @Override
    @SideOnly(Side.CLIENT)
    public boolean hasEffect(ItemStack stack){
        return false;
    }

    @Override
    @SideOnly(Side.CLIENT)
    public void getSubItems(Item item, CreativeTabs tabs, NonNullList list){
        ItemStack stackFull = new ItemStack(this);
        if(stackFull.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stackFull.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                this.setEnergy(stackFull, storage.getMaxEnergyStored());
                list.add(stackFull);
            }
        }

        ItemStack stackEmpty = new ItemStack(this);
        this.setEnergy(stackEmpty, 0);
        list.add(stackEmpty);
    }

    @Override
    public boolean showDurabilityBar(ItemStack itemStack){
        return true;
    }

    @Override
    public double getDurabilityForDisplay(ItemStack stack){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                double maxAmount = storage.getMaxEnergyStored();
                double energyDif = maxAmount-storage.getEnergyStored();
                return energyDif/maxAmount;
            }
        }
        return super.getDurabilityForDisplay(stack);
    }

    @Override
    public int getRGBDurabilityForDisplay(ItemStack stack){
        EntityPlayer player = PlentifulMisc.proxy.getCurrentPlayer();
        if(player != null && player.worldObj != null){
            float[] color = AssetUtil.getRGB(player.worldObj.getTotalWorldTime()%256);
            return MathHelper.rgb(color[0]/255F, color[1]/255F, color[2]/255F);
        }
        return super.getRGBDurabilityForDisplay(stack);
    }

    public void setEnergy(ItemStack stack, int energy){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).setEnergyStored(energy);
            }
        }
    }

    public int receiveEnergyInternal(ItemStack stack, int maxReceive, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).receiveEnergyInternal(maxReceive, simulate);
            }
        }
        return 0;
    }

    public int extractEnergyInternal(ItemStack stack, int maxExtract, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage instanceof CustomEnergyStorage){
                ((CustomEnergyStorage)storage).extractEnergyInternal(maxExtract, simulate);
            }
        }
        return 0;
    }

    public int receiveEnergy(ItemStack stack, int maxReceive, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.receiveEnergy(maxReceive, simulate);
            }
        }
        return 0;
    }

    public int extractEnergy(ItemStack stack, int maxExtract, boolean simulate){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.extractEnergy(maxExtract, simulate);
            }
        }
        return 0;
    }

    public int getEnergyStored(ItemStack stack){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.getEnergyStored();
            }
        }
        return 0;
    }

    public int getMaxEnergyStored(ItemStack stack){
        if(stack.hasCapability(CapabilityEnergy.ENERGY, null)){
            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY, null);
            if(storage != null){
                return storage.getMaxEnergyStored();
            }
        }
        return 0;
    }

    @Override
    public ICapabilityProvider initCapabilities(ItemStack stack, NBTTagCompound nbt){
        return new EnergyCapabilityProvider(stack, this);
    }

    private static class EnergyCapabilityProvider implements ICapabilityProvider{

        private final CustomEnergyStorage storage;

        public EnergyCapabilityProvider(final ItemStack stack, ItemEnergy item){
            this.storage = new CustomEnergyStorage(item.maxPower, item.transfer, item.transfer){
                @Override
                public int getEnergyStored(){
                    if(stack.hasTagCompound()){
                        return stack.getTagCompound().getInteger("Energy");
                    }
                    else{
                        return 0;
                    }
                }

                @Override
                public void setEnergyStored(int energy){
                    if(!stack.hasTagCompound()){
                        stack.setTagCompound(new NBTTagCompound());
                    }

                    stack.getTagCompound().setInteger("Energy", energy);
                }
            };
        }

        @Override
        public boolean hasCapability(Capability<?> capability, EnumFacing facing){
            return this.getCapability(capability, facing) != null;
        }

        @Nullable
        @Override
        public <T> T getCapability(Capability<T> capability, EnumFacing facing){
            if(capability == CapabilityEnergy.ENERGY){
                return (T)this.storage;
            }
            return null;
        }
    }
}

And the battery as an example, all energy Items are crashing:

public class ItemBattery extends ItemEnergy{

    public ItemBattery(String name, int capacity, int transfer){
        super(capacity, transfer, name);
        this.setMaxStackSize(1);
    }

    @Override
    public EnumRarity getRarity(ItemStack stack){
        return EnumRarity.RARE;
    }

    @Override
    public boolean hasEffect(ItemStack stack){
        return ItemUtil.isEnabled(stack);
    }

    @Override
    public void onUpdate(ItemStack stack, World world, Entity entity, int itemSlot, boolean isSelected){
        if(!world.isRemote && entity instanceof EntityPlayer && ItemUtil.isEnabled(stack)){
            EntityPlayer player = (EntityPlayer)entity;
            for(int i = 0; i < player.inventory.getSizeInventory(); i++){
                ItemStack slot = player.inventory.getStackInSlot(i);
                if(StackUtil.isValid(slot)){
                    int extractable = this.extractEnergy(stack, Integer.MAX_VALUE, true);
                    int received = 0;

                    if(slot.hasCapability(CapabilityEnergy.ENERGY, null)){
                        IEnergyStorage cap = slot.getCapability(CapabilityEnergy.ENERGY, null);
                        if(cap != null){
                            received = cap.receiveEnergy(extractable, false);
                        }
                    }

                    if(received > 0){
                        this.extractEnergy(stack, received, false);
                    }
                }
            }
        }
    }

    @Override
    public ActionResult<ItemStack> onItemRightClick(World worldIn, EntityPlayer player, EnumHand hand){
        if(!worldIn.isRemote && player.isSneaking()){
            ItemUtil.changeEnabled(player, hand);
            return new ActionResult<ItemStack>(EnumActionResult.SUCCESS, player.getHeldItem(hand));
        }
        return super.onItemRightClick(worldIn, player, hand);
    }

    @Override
    public void addInformation(ItemStack stack, EntityPlayer player, List list, boolean bool){
        super.addInformation(stack, player, list, bool);
        list.add(StringUtil.localize("tooltip."+ModUtil.MOD_ID+".battery."+(ItemUtil.isEnabled(stack) ? "discharge" : "noDischarge")));
        list.add(StringUtil.localize("tooltip."+ModUtil.MOD_ID+".battery.changeMode"));
    }
}

LexManos · December 8, 2016

I love that this is such a simple issue yet you keep posting things that have nothing to do with the issue.

The issue is that whatever you are RETURNING from getCapability is NOT following the capability contract.

This has nothing to do with calling/using the cap. It has everything to do with what you're returning.

So, whatever your implementation of getCapability is, show us.

com.lambda.plentifulmisc.items.base.ItemEnergy

Give us that entire class.

Lambda · December 8, 2016

I see what you mean, Will take into consideration next time. With that I did some digging and found out my 'CustomEnergyStorage' was extending CoFH IEnergyStorage instead of forge's.

Thanks for your help.

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[1.11] [solved] Casting Capabilities.

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