NoSuchMethodExceptions on world load

[SirWindfield]

I am pretty new to modding so please keep that in mind

I want to disable all vanilla swords and tried it with the following code (basically just registering a custom event handler using MinecraftForge#EVENT_BUS):

@SubscribeEvent(priority = EventPriority.HIGHEST)
    public void onDamageTaken(LivingHurtEvent event) {
        // only consider any calculations if the source is the player itself
        Entity entity = event.getSource().getEntity();
        if (entity instanceof EntityPlayer) {
            EntityPlayer player = (EntityPlayer) entity;
            // only look for the main hand
            ItemStack stack = player.getHeldItemMainhand();
            if (!ItemStackTools.isEmpty(stack)) {
                if (stack.getItem() instanceof ItemSword) {
                    event.setCanceled(true);
                }
            }
        }
    }

But for some odd reasons, as soon as I load into a world, I get a `java.lang.NoSuchMethodError: net.minecraft.util.DamageSource.getEntity()Lnet/minecraft/entity/Entity;`. To be honest, I have no idea what is going wrong here D:

If I run the code within eclipse by using the gradle runClient command all works fine. But if I build the jar using `gradle build` and add it to the mods folder, the game crashes on world load.

Here is the full stack trace: https://pastebin.com/3TrnL5NS

I have a general idea what is happening though. Not every entitiy has a damage source I guess. And it looks like the Bat is one of them. But how would I check for that too? 

I tried it early on with `event.getSource().getDamageType()` but that through the same exception on mobs added by oder mods.

 

Any help is appreciated,

Sir

[Abastro]

It seems that the part of the code is not obfuscated. Could you post your build.gradle file and the log from the gradle build command?

[SirWindfield]

buildscript {
    repositories {
        jcenter()
        maven { url = "http://files.minecraftforge.net/maven" }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT'
    }
}
repositories {
    maven { // JEI, McJtyLib and TOP
        url "http://modmaven.k-4u.nl/"
    }
}
apply plugin: 'net.minecraftforge.gradle.forge'
//Only edit below this line, the above code adds and enables the nessasary things for Forge to be setup.


version = "1.0.1"
group= "de.zerotask.minecraft.vanillatools" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
archivesBaseName = "vanillatools"

sourceCompatibility = targetCompatibility = "1.8" // Need this here so eclipse task generates correctly.
compileJava {
    sourceCompatibility = targetCompatibility = "1.8"
}

minecraft {
    version = "1.10.2-12.18.3.2281"
    runDir = "run"
    
    // the mappings can be changed at any time, and must be in the following format.
    // snapshot_YYYYMMDD   snapshot are built nightly.
    // stable_#            stables are built at the discretion of the MCP team.
    // Use non-default mappings at your own risk. they may not allways work.
    // simply re-run your setup task after changing the mappings to update your workspace.
    mappings = "snapshot_20161111"
    // makeObfSourceJar = false // an Srg named sources jar is made by default. uncomment this to disable.
}

dependencies {
    // you may put jars on which you depend on in ./libs
    // or you may define them like so..
    //compile "some.group:artifact:version:classifier"
    //compile "some.group:artifact:version"
      
    // real examples
    //compile 'com.mod-buildcraft:buildcraft:6.0.8:dev'  // adds buildcraft to the dev env
    //compile 'com.googlecode.efficient-java-matrix-library:ejml:0.24' // adds ejml to the dev env

    // the 'provided' configuration is for optional dependencies that exist at compile-time but might not at runtime.
    //provided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // the deobf configurations:  'deobfCompile' and 'deobfProvided' are the same as the normal compile and provided,
    // except that these dependencies get remapped to your current MCP mappings
    //deobfCompile 'com.mod-buildcraft:buildcraft:6.0.8:dev'
    //deobfProvided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // for more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html
    deobfCompile "com.github.mcjty:compatlayer:1.10-0.2.8"

}

processResources
{
    // this will ensure that this task is redone when the versions change.
    inputs.property "version", project.version
    inputs.property "mcversion", project.minecraft.version

    // replace stuff in mcmod.info, nothing else
    from(sourceSets.main.resources.srcDirs) {
        include 'mcmod.info'
                
        // replace version and mcversion
        expand 'version':project.version, 'mcversion':project.minecraft.version
    }
        
    // copy everything else, thats not the mcmod.info
    from(sourceSets.main.resources.srcDirs) {
        exclude 'mcmod.info'
    }
}

And here is my log file: https://pastebin.com/TJg8vhcj

[jeffryfisher]

Rather than "gradle build", try gradlew build (run the script that came with the Forge installation). And, I don't know what Eclipse might be doing to gradle, but be safe by opening a command window and running the gradlew script from a command prompt.