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[1.10.2] [Scala] Capabilities clashing with each other (SOLVED)

tripl3dogdare

By tripl3dogdare
in Modder Support

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tripl3dogdare

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So I'm working on a fairly large mod in Scala, and I have two different capabilities, one for handling mana and the other for handling a custom level/exp system. However, it seems like I've done something wrong, as Forge appears to try to connect an instance of the mana handler to where there should be a level handler.

 

ServerProxy (usually called CommonProxy, I'm weird)

 

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Relevant event handler code

 

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Relevant capability code

 

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There is also an abstract class LevelHandler, but none of it's code should really be relevant. DefaultLevelHandler is a typical double-inheritance from LevelHandler and ICapabilitySerializable, and it's Storage is fairly standard as well. The same is true of ManaHandler's parts.

 

Can you spot my error? I'm completely stumped. Thanks!

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tripl3dogdare

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Ah yes, sorry. The game crashes with this error when I try to load a world:

 

java.lang.ClassCastException: chuunimod.capabilities.DefaultManaHandler cannot be cast to chuunimod.capabilities.LevelHandler
at chuunimod.capabilities.LevelHandler$.instanceFor(LevelHandler.scala:58)
at chuunimod.gui.GuiChuuniOverlay.onRenderGameOverlay(GuiChuuniOverlay.scala:22)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_9_GuiChuuniOverlay_onRenderGameOverlay_Post.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:168)
at net.minecraftforge.client.GuiIngameForge.post(GuiIngameForge.java:888)
at net.minecraftforge.client.GuiIngameForge.renderExperience(GuiIngameForge.java:586)
at net.minecraftforge.client.GuiIngameForge.renderGameOverlay(GuiIngameForge.java:167)
at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(EntityRenderer.java:1125)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1139)
at net.minecraft.client.Minecraft.run(Minecraft.java:406)
at net.minecraft.client.main.Main.main(Main.java:118)
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 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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)

 

Full crash report:

 

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All I'm doing is trying to access the handlers via the instanceFor method to render their information to a GUI.

Github: http://github.com/tripl3dogdare

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tripl3dogdare

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Mana:

class DefaultManaHandler(cur:Float=0,max:Float=250,regen:Float=.25f) extends ManaHandler(cur,max,regen) with ICapabilitySerializable[NBTTagCompound] {
def hasCapability(capability:Capability[_], f:EnumFacing) = capability == ManaHandler.CAP
def getCapability[T](capability:Capability[T], f:EnumFacing) = { if(capability == ManaHandler.CAP) this else null }.asInstanceOf[T]

def serializeNBT:NBTTagCompound = new NBTManaHandler(this).nbt
def deserializeNBT(nbt:NBTTagCompound) = new NBTManaHandler(nbt).copyTo(this)
}

object DefaultManaHandler {
class Storage extends IStorage[ManaHandler] {
	def writeNBT(cap:Capability[ManaHandler], ins:ManaHandler, f:EnumFacing) = ins.asInstanceOf[DefaultManaHandler].serializeNBT
	def readNBT(cap:Capability[ManaHandler], ins:ManaHandler, f:EnumFacing, nbt:NBTBase) = ins.asInstanceOf[DefaultManaHandler].deserializeNBT(nbt.asInstanceOf[NBTTagCompound])
}
}

 

Levels:

class DefaultLevelHandler(lvl:Int=1,xp:Float=0) extends LevelHandler(lvl,xp) with ICapabilitySerializable[NBTTagCompound] {
def hasCapability(capability:Capability[_], f:EnumFacing) = capability == LevelHandler.CAP
def getCapability[T](capability:Capability[T], f:EnumFacing) = { if(capability == LevelHandler.CAP) this else null }.asInstanceOf[T]

def serializeNBT:NBTTagCompound = new NBTLevelHandler(this).nbt
def deserializeNBT(nbt:NBTTagCompound) = new NBTLevelHandler(nbt).copyTo(this)
}

object DefaultLevelHandler {
class Storage extends IStorage[LevelHandler] {
	def writeNBT(cap:Capability[LevelHandler], ins:LevelHandler, f:EnumFacing) = ins.asInstanceOf[DefaultLevelHandler].serializeNBT
	def readNBT(cap:Capability[LevelHandler], ins:LevelHandler, f:EnumFacing, nbt:NBTBase) = ins.asInstanceOf[DefaultLevelHandler].deserializeNBT(nbt.asInstanceOf[NBTTagCompound])
}
}

Github: http://github.com/tripl3dogdare

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tripl3dogdare

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Not really sure what you mean by the same class - the capability type is Handler, and the default implementation is DefaultHandler.

 

As to the debugger idea, the only option I have is the Eclipse debugger, which doesn't seem to be up to the task.

Github: http://github.com/tripl3dogdare

Youtube: http://youtube.com/tripl3dogdare

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tripl3dogdare

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  Quote
DefaultLevelHandler implements both LevelHandler and ICapabilitySerializable (i.e. ICapabilityProvider)

Ah, ok. Honestly, I've used this structure before and not had any problems with keeping track of it... For brevity's sake I'll leave it for now, especially as I don't think that's where the problem is (the mana handler worked fine before I added the level handler)

Github: http://github.com/tripl3dogdare

Youtube: http://youtube.com/tripl3dogdare

Twitter: http://twitter.com/tripl3dogdare

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tripl3dogdare Tree Puncher

tripl3dogdare

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I have only the vaguest idea why, but for some reason that worked. Thank you! My updated code is below for anyone having the same issue.

 

object (x)Handler

object ManaHandler {
def instanceFor(player:EntityPlayer) = player.getCapability(Capabilities.MANA, null)
def getHandlerInstance = new DefaultManaHandler
def getStorageInstance = new DefaultManaHandler.Storage
def getHandlerFactory = new Callable[DefaultManaHandler] { def call = new DefaultManaHandler }
}

object LevelHandler {
def instanceFor(player:EntityPlayer) = player.getCapability(Capabilities.LEVEL, null)
def getHandlerInstance = new DefaultLevelHandler
def getStorageInstance = new DefaultLevelHandler.Storage
def getHandlerFactory = new Callable[DefaultLevelHandler] { def call = new DefaultLevelHandler }
}

 

Capabilities.java

public class Capabilities {
@CapabilityInject(ManaHandler.class) public static final Capability<ManaHandler> MANA = null;
@CapabilityInject(LevelHandler.class) public static final Capability<LevelHandler> LEVEL = null;
}

 

Moral of the story, don't try to inject capabilities into Scala code if you intend to use more than one.

Github: http://github.com/tripl3dogdare

Youtube: http://youtube.com/tripl3dogdare

Twitter: http://twitter.com/tripl3dogdare

Twitter RP: http://twitter.com/TheWitchesEye

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