Make hammer deal actual damage when attacking mobs and make it not spammable

src/main/kotlin/ru/dbotthepony/mc/otm/core/Ext.kt

@@ -5,6 +5,7 @@ package ru.dbotthepony.mc.otm.core
 
 import com.google.common.collect.ImmutableList
 import com.google.common.collect.ImmutableMap
+import com.google.common.collect.ImmutableMultimap
 import com.google.common.collect.ImmutableSet
 import com.google.gson.JsonElement
 import com.google.gson.JsonObject
@@ -151,6 +152,12 @@ inline fun <K : Any, V : Any> immutableMap(initializer: ImmutableMap.Builder<K,
 	return builder.build()
 }
 
+inline fun <K : Any, V : Any> immutableMultimap(initializer: ImmutableMultimap.Builder<K, V>.() -> Unit): ImmutableMultimap<K, V> {
+	val builder = ImmutableMultimap.Builder<K, V>()
+	initializer.invoke(builder)
+	return builder.build()
+}
+
 inline fun <V : Any> immutableSet(initializer: Consumer<V>.() -> Unit): ImmutableSet<V> {
 	val builder = ImmutableSet.Builder<V>()
 	initializer.invoke(builder::add)

src/main/kotlin/ru/dbotthepony/mc/otm/item/tool/ExplosiveHammerItem.kt

@@ -1,5 +1,7 @@
 package ru.dbotthepony.mc.otm.item.tool
 
+import com.google.common.collect.ImmutableMultimap
+import com.google.common.collect.Multimap
 import it.unimi.dsi.fastutil.objects.ObjectArraySet
 import net.minecraft.ChatFormatting
 import net.minecraft.core.BlockPos
@@ -9,7 +11,11 @@ import net.minecraft.server.level.ServerLevel
 import net.minecraft.server.level.ServerPlayer
 import net.minecraft.world.InteractionHand
 import net.minecraft.world.damagesource.DamageSource
+import net.minecraft.world.entity.EquipmentSlot
 import net.minecraft.world.entity.LivingEntity
+import net.minecraft.world.entity.ai.attributes.Attribute
+import net.minecraft.world.entity.ai.attributes.AttributeModifier
+import net.minecraft.world.entity.ai.attributes.Attributes
 import net.minecraft.world.entity.item.ItemEntity
 import net.minecraft.world.entity.player.Player
 import net.minecraft.world.item.Item
@@ -23,12 +29,15 @@ import net.minecraftforge.common.MinecraftForge
 import net.minecraftforge.event.entity.player.PlayerInteractEvent
 import net.minecraftforge.event.level.BlockEvent
 import ru.dbotthepony.mc.otm.block.entity.MatteryBlockEntity
+import ru.dbotthepony.mc.otm.capability.matteryEnergy
 import ru.dbotthepony.mc.otm.config.ItemsConfig
 import ru.dbotthepony.mc.otm.config.ToolsConfig
 import ru.dbotthepony.mc.otm.core.TranslatableComponent
 import ru.dbotthepony.mc.otm.core.damageType
 import ru.dbotthepony.mc.otm.core.getExplosionResistance
 import ru.dbotthepony.mc.otm.core.gracefulBlockBreak
+import ru.dbotthepony.mc.otm.core.immutableMap
+import ru.dbotthepony.mc.otm.core.immutableMultimap
 import ru.dbotthepony.mc.otm.core.isExplosion
 import ru.dbotthepony.mc.otm.core.math.component1
 import ru.dbotthepony.mc.otm.core.math.component2
@@ -39,12 +48,13 @@ import ru.dbotthepony.mc.otm.core.math.toDoubleVector
 import ru.dbotthepony.mc.otm.core.nbt.set
 import ru.dbotthepony.mc.otm.core.position
 import ru.dbotthepony.mc.otm.core.tagNotNull
+import ru.dbotthepony.mc.otm.item.weapon.EnergySwordItem
 import ru.dbotthepony.mc.otm.registry.MDamageTypes
 import ru.dbotthepony.mc.otm.registry.MRegistry
 import ru.dbotthepony.mc.otm.registry.MatteryDamageSource
 import ru.dbotthepony.mc.otm.triggers.NailedEntityTrigger
 
-class ExplosiveHammerItem(durability: Int = 64) : Item(Properties().stacksTo(1).fireResistant().durability(durability)) {
+class ExplosiveHammerItem(durability: Int = 512) : Item(Properties().stacksTo(1).fireResistant().durability(durability)) {
 	override fun canBeHurtBy(pDamageSource: DamageSource): Boolean {
 		return super.canBeHurtBy(pDamageSource) && !pDamageSource.isExplosion
 	}
@@ -64,8 +74,24 @@ class ExplosiveHammerItem(durability: Int = 64) : Item(Properties().stacksTo(1).
 
 	private val aabb = AABB(-0.1, -0.1, -0.1, 0.1, 0.1, 0.1)
 
+	val attributes = immutableMultimap {
+		put(Attributes.ATTACK_DAMAGE, AttributeModifier(BASE_ATTACK_DAMAGE_UUID, "Weapon modifier", 3.0, AttributeModifier.Operation.ADDITION))
+		put(Attributes.ATTACK_SPEED, AttributeModifier(BASE_ATTACK_SPEED_UUID, "Weapon modifier", -3.4, AttributeModifier.Operation.ADDITION))
+	}
+
+	override fun getAttributeModifiers(
+		slot: EquipmentSlot,
+		itemStack: ItemStack
+	): Multimap<Attribute, AttributeModifier> {
+		if (slot != EquipmentSlot.MAINHAND) {
+			return ImmutableMultimap.of()
+		}
+
+		return attributes
+	}
+
 	fun attackAt(itemStack: ItemStack, attacker: LivingEntity, pos: Vec3, aim: Vec3, hand: InteractionHand) {
-		if (!isPrimed(itemStack) || attacker.level.isClientSide)
+		if (!isPrimed(itemStack) || attacker.level.isClientSide || attacker is Player && attacker.getAttackStrengthScale(0.4f) < 0.98f)
 			return
 
 		val (ex, ey, ez) = pos
@@ -149,7 +175,7 @@ class ExplosiveHammerItem(durability: Int = 64) : Item(Properties().stacksTo(1).
 
 			val copy = itemStack.copy()
 
-			itemStack.hurtAndBreak(1, attacker) {
+			itemStack.hurtAndBreak(level.random.nextInt(1, 20), attacker) {
 				it.broadcastBreakEvent(hand)
 			}