feat(critereon): health predicate

src/main/java/org/auioc/mcmod/arnicalib/game/critereon/AttributePredicate.java

@@ -51,12 +51,11 @@ public record AttributePredicate(
 
     private static final Marker MARKER = MarkerFactory.getMarker("AttributePredicate");
 
-    public static MapCodec<AttributePredicate> CODEC = RecordCodecBuilder.mapCodec(
-        instance -> instance.group(
-            Attribute.CODEC.fieldOf("attribute").forGetter(o -> o.attribute),
-            EnumCodec.byString(ValueType.class, e -> e.name).fieldOf("type").forGetter(o -> o.type),
-            MinMaxBounds.Doubles.CODEC.fieldOf("value").forGetter(o -> o.value)
-        ).apply(instance, AttributePredicate::new));
+    public static MapCodec<AttributePredicate> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
+        Attribute.CODEC.fieldOf("attribute").forGetter(o -> o.attribute),
+        EnumCodec.byString(ValueType.class, e -> e.name).fieldOf("type").forGetter(o -> o.type),
+        MinMaxBounds.Doubles.CODEC.fieldOf("value").forGetter(o -> o.value)
+    ).apply(instance, AttributePredicate::new));
 
     @Override
     public MapCodec<AttributePredicate> codec() { return CODEC; }

src/main/java/org/auioc/mcmod/arnicalib/game/critereon/FrozenPredicate.java

@@ -28,13 +28,15 @@
 import net.minecraft.world.phys.Vec3;
 import org.jetbrains.annotations.Nullable;
 
+/**
+ * @since 7.0.0
+ */
 public record FrozenPredicate(MinMaxBounds.Ints ticks, MinMaxBounds.Doubles percent) implements EntitySubPredicate {
 
     public static final MapCodec<FrozenPredicate> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
-            MinMaxBounds.Ints.CODEC.optionalFieldOf("ticks", MinMaxBounds.Ints.ANY).forGetter(o -> o.ticks),
-            MinMaxBounds.Doubles.CODEC.optionalFieldOf("percent", MinMaxBounds.Doubles.ANY).forGetter(o -> o.percent)
-        ).apply(instance, FrozenPredicate::new)
-    );
+        MinMaxBounds.Ints.CODEC.optionalFieldOf("ticks", MinMaxBounds.Ints.ANY).forGetter(o -> o.ticks),
+        MinMaxBounds.Doubles.CODEC.optionalFieldOf("percent", MinMaxBounds.Doubles.ANY).forGetter(o -> o.percent)
+    ).apply(instance, FrozenPredicate::new));
 
     @Override
     public MapCodec<? extends EntitySubPredicate> codec() { return CODEC; }

src/main/java/org/auioc/mcmod/arnicalib/game/critereon/HealthPredicate.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2025 AUIOC.ORG
+ *
+ * This file is part of ArnicaLib, a mod made for Minecraft.
+ *
+ * ArnicaLib is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.auioc.mcmod.arnicalib.game.critereon;
+
+import com.mojang.serialization.MapCodec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
+import net.minecraft.advancements.critereon.EntitySubPredicate;
+import net.minecraft.advancements.critereon.MinMaxBounds;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.phys.Vec3;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @since 7.0.1
+ */
+public record HealthPredicate(MinMaxBounds.Doubles current, MinMaxBounds.Doubles percent) implements EntitySubPredicate {
+
+    public static MapCodec<HealthPredicate> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
+        MinMaxBounds.Doubles.CODEC.optionalFieldOf("current", MinMaxBounds.Doubles.ANY).forGetter(o -> o.current),
+        MinMaxBounds.Doubles.CODEC.optionalFieldOf("percent", MinMaxBounds.Doubles.ANY).forGetter(o -> o.percent)
+    ).apply(instance, HealthPredicate::new));
+
+    @Override
+    public MapCodec<HealthPredicate> codec() { return CODEC; }
+
+    @Override
+    public boolean matches(Entity entity, ServerLevel level, @Nullable Vec3 position) {
+        if (entity instanceof LivingEntity living) {
+            if (!current.matches(living.getHealth())) {
+                return false;
+            }
+            if (!percent.matches(living.getHealth() / living.getMaxHealth())) {
+                return false;
+            }
+            return true;
+        }
+        return false;
+    }
+
+
+    // ============================================================================================================== //
+
+    public static HealthPredicate current(MinMaxBounds.Doubles value) {
+        return new HealthPredicate(value, MinMaxBounds.Doubles.ANY);
+    }
+
+    public static HealthPredicate percent(MinMaxBounds.Doubles value) {
+        return new HealthPredicate(MinMaxBounds.Doubles.ANY, value);
+    }
+
+}

src/main/java/org/auioc/mcmod/arnicalib/mod/critereon/AHEntitySubPredicates.java

@@ -27,6 +27,7 @@
 import org.auioc.mcmod.arnicalib.ArnicaLib;
 import org.auioc.mcmod.arnicalib.game.critereon.AttributePredicate;
 import org.auioc.mcmod.arnicalib.game.critereon.FrozenPredicate;
+import org.auioc.mcmod.arnicalib.game.critereon.HealthPredicate;
 
 public class AHEntitySubPredicates {
 
@@ -36,4 +37,6 @@ public class AHEntitySubPredicates {
 
     public static final DeferredHolder<MapCodec<? extends EntitySubPredicate>, MapCodec<AttributePredicate>> ATTRIBUTE = CODECS.register("attribute", () -> AttributePredicate.CODEC);
 
+    public static final DeferredHolder<MapCodec<? extends EntitySubPredicate>, MapCodec<HealthPredicate>> HEALTH = CODECS.register("health", () -> HealthPredicate.CODEC);
+
 }