item specific break speed functions

Author: beanbag44

common/src/main/kotlin/com/lambda/util/BlockUtils.kt

@@ -21,12 +21,18 @@ import com.lambda.context.SafeContext
 import com.lambda.util.item.ItemUtils.block
 import com.lambda.util.item.ItemUtils.shulkerBoxes
 import com.lambda.util.math.MathUtils.floorToInt
-import net.minecraft.block.Block
-import net.minecraft.block.BlockState
-import net.minecraft.block.Blocks
+import net.minecraft.block.*
+import net.minecraft.enchantment.EnchantmentHelper
+import net.minecraft.enchantment.Enchantments
+import net.minecraft.entity.effect.StatusEffectUtil
+import net.minecraft.entity.effect.StatusEffects
+import net.minecraft.entity.player.PlayerEntity
 import net.minecraft.fluid.FluidState
 import net.minecraft.fluid.Fluids
 import net.minecraft.item.Item
+import net.minecraft.item.ItemStack
+import net.minecraft.item.SwordItem
+import net.minecraft.registry.tag.FluidTags
 import net.minecraft.util.math.*
 import net.minecraft.world.BlockView
 
@@ -155,6 +161,69 @@ object BlockUtils {
         val ticksNeeded = 1 / blockState.calcBlockBreakingDelta(player, world, blockPos)
         return (ticksNeeded <= 1 && ticksNeeded != 0f) || player.isCreative
     }
+    fun SafeContext.instantBreakable(blockState: BlockState, blockPos: BlockPos, item: ItemStack): Boolean {
+        val ticksNeeded = 1 / blockState.calcItemBlockBreakingDelta(player, world, blockPos, item)
+        return (ticksNeeded <= 1 && ticksNeeded != 0f) || player.isCreative
+    }
+    fun BlockState.calcItemBlockBreakingDelta(
+        player: PlayerEntity,
+        world: BlockView,
+        blockPos: BlockPos,
+        item: ItemStack
+    ): Float =
+        if ((block is BambooShootBlock || block is BambooBlock)
+            && item.item is SwordItem) {
+            1.0f
+        } else {
+            val f: Float = this.getHardness(world, blockPos)
+            if (f == -1.0f) {
+                0.0f
+            } else {
+                val i = if (item.canHarvest(this)) 30 else 100
+                player.getItemBlockBreakingSpeed(this, item) / f / i.toFloat()
+            }
+        }
+
+    fun ItemStack.canHarvest(blockState: BlockState) =
+        !blockState.isToolRequired || this.isSuitableFor(blockState)
+
+    fun PlayerEntity.getItemBlockBreakingSpeed(blockState: BlockState, item: ItemStack): Float {
+        var f = item.getMiningSpeedMultiplier(blockState)
+        if (f > 1.0f) {
+            val i = EnchantmentHelper.getLevel(Enchantments.EFFICIENCY, item)
+            if (i > 0 && !item.isEmpty) {
+                f += (i * i + 1).toFloat()
+            }
+        }
+
+        if (StatusEffectUtil.hasHaste(this)) {
+            f *= 1.0f + (StatusEffectUtil.getHasteAmplifier(this) + 1).toFloat() * 0.2f
+        }
+
+        if (this.hasStatusEffect(StatusEffects.MINING_FATIGUE)) {
+            val g = when (getStatusEffect(StatusEffects.MINING_FATIGUE)!!.amplifier) {
+                0 -> 0.3f
+                1 -> 0.09f
+                2 -> 0.0027f
+                3 -> 8.1E-4f
+                else -> 8.1E-4f
+            }
+
+            f *= g
+        }
+
+        if (this.isSubmergedIn(FluidTags.WATER)
+            && !EnchantmentHelper.hasAquaAffinity(this)
+            ) {
+            f /= 5.0f
+        }
+
+        if (!this.isOnGround) {
+            f /= 5.0f
+        }
+
+        return f
+    }
 
     val Vec3i.blockPos: BlockPos get() = BlockPos(this)
     val Block.item: Item get() = asItem()