Initial commit

src/main/java/com/kasetoatz/stasisrods/mixin/FishingRodItemMixin.java

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+package com.kasetoatz.stasisrods.mixin;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.component.DataComponentTypes;
+import net.minecraft.component.type.NbtComponent;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.entity.attribute.EntityAttributes;
+import net.minecraft.entity.decoration.ArmorStandEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.FishingRodItem;
+import net.minecraft.item.ItemStack;
+import net.minecraft.registry.tag.BlockTags;
+import net.minecraft.sound.SoundCategory;
+import net.minecraft.sound.SoundEvents;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.Hand;
+import net.minecraft.util.hit.BlockHitResult;
+import net.minecraft.util.hit.HitResult;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import static com.kasetoatz.stasisrods.util.Util.spawnPlaceholder;
+import static com.kasetoatz.stasisrods.util.Util.tryDiscardPlaceholder;
+
+@Mixin(FishingRodItem.class)
+public class FishingRodItemMixin
+{
+    @Inject(method="use", at=@At("HEAD"), cancellable = true)
+    public void use(World world, PlayerEntity user, Hand hand, CallbackInfoReturnable<ActionResult> cir)
+    {
+        ItemStack stack = user.getStackInHand(hand);
+        if (tryDiscardPlaceholder(stack, world.getServer()))
+        {
+            stack.damage(1, user, LivingEntity.getSlotForHand(hand));
+            world.playSound(
+                null,
+                user.getX(),
+                user.getY(),
+                user.getZ(),
+                SoundEvents.ENTITY_FISHING_BOBBER_RETRIEVE,
+                SoundCategory.NEUTRAL,
+                1.0F,
+                0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
+            );
+            cir.setReturnValue(ActionResult.SUCCESS);
+            return;
+        }
+        HitResult hitResult = user.raycast(user.getAttributeValue(EntityAttributes.BLOCK_INTERACTION_RANGE), 0F, false);
+        if (hitResult.getType() != HitResult.Type.BLOCK)
+        {
+            return;
+        }
+        BlockState state = world.getBlockState(((BlockHitResult)hitResult).getBlockPos());
+        if (!state.isIn(BlockTags.PRESSURE_PLATES))
+        {
+            return;
+        }
+        world.playSound(
+            null,
+            user.getX(),
+            user.getY(),
+            user.getZ(),
+            SoundEvents.ENTITY_FISHING_BOBBER_THROW,
+            SoundCategory.NEUTRAL,
+            0.5F,
+            0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
+        );
+        ArmorStandEntity placeholder = spawnPlaceholder(world, hitResult.getPos());
+        stack.set(DataComponentTypes.CUSTOM_DATA, NbtComponent.DEFAULT.apply(nbt -> nbt.putString("placeholder", placeholder.getUuidAsString())));
+        cir.setReturnValue(ActionResult.SUCCESS);
+    }
+}

src/main/java/com/kasetoatz/stasisrods/util/Util.java

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+package com.kasetoatz.stasisrods.util;
+
+import net.minecraft.component.DataComponentTypes;
+import net.minecraft.component.type.NbtComponent;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.decoration.ArmorStandEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+
+import java.util.UUID;
+
+public class Util
+{
+    public static boolean tryDiscardPlaceholder(ItemStack stack, MinecraftServer server)
+    {
+        NbtComponent data = stack.get(DataComponentTypes.CUSTOM_DATA);
+        if (data == null)
+        {
+            return false;
+        }
+        String uuid = data.copyNbt().getString("placeholder", null);
+        if (uuid == null)
+        {
+            return false;
+        }
+        UUID id = UUID.fromString(uuid);
+        boolean found = false;
+        for (ServerWorld world : server.getWorlds())
+        {
+            Entity entity = world.getEntity(id);
+            if (entity == null)
+            {
+                continue;
+            }
+            if (entity.isRemoved())
+            {
+                stack.set(DataComponentTypes.CUSTOM_DATA, data.apply(nbt -> nbt.remove("placeholder")));
+                return false;
+            }
+            entity.discard();
+            found = true;
+            break;
+        }
+        return found;
+    }
+
+    public static ArmorStandEntity spawnPlaceholder(World world, Vec3d pos)
+    {
+        ArmorStandEntity placeholder = new ArmorStandEntity(world, pos.getX(), pos.getY(), pos.getZ());
+        placeholder.setHideBasePlate(true);
+        placeholder.setInvisible(true);
+        placeholder.setInvulnerable(true);
+        world.spawnEntity(placeholder);
+        return placeholder;
+    }
+}

src/main/resources/fabric.mod.json

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+{
+  "schemaVersion": 1,
+  "id": "stasisrods",
+  "version": "${version}",
+  "name": "UnbreakableFishingRods",
+  "description": "",
+  "authors": [],
+  "contact": {},
+  "license": "MIT",
+  "environment": "server",
+  "mixins": [
+    "stasisrods.mixins.json"
+  ],
+  "depends": {
+    "fabricloader": ">=${loader_version}",
+    "fabric": "*",
+    "minecraft": "${minecraft_version}"
+  }
+}

src/main/resources/stasisrods.mixins.json

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+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "com.kasetoatz.stasisrods.mixin",
+  "compatibilityLevel": "JAVA_21",
+  "mixins": [
+    "FishingRodItemMixin"
+  ],
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "overwrites": {
+    "requireAnnotations": true
+  }
+}