add heal skill

mob/src/main/java/org/phantazm/mob2/skill/HealSkill.java

@@ -0,0 +1,67 @@
+package org.phantazm.mob2.skill;
+
+import com.github.steanky.element.core.annotation.*;
+import com.github.steanky.ethylene.core.ConfigElement;
+import com.github.steanky.ethylene.core.ConfigPrimitive;
+import com.github.steanky.ethylene.mapper.annotation.Default;
+import net.minestom.server.entity.LivingEntity;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.phantazm.commons.InjectionStore;
+import org.phantazm.mob2.Mob;
+import org.phantazm.mob2.Target;
+import org.phantazm.mob2.Trigger;
+import org.phantazm.mob2.selector.Selector;
+import org.phantazm.mob2.selector.SelectorComponent;
+
+import java.util.Objects;
+
+@Model("mob.skill.heal")
+@Cache
+public class HealSkill implements SkillComponent {
+    private final Data data;
+    private final SelectorComponent selector;
+
+    @FactoryMethod
+    public HealSkill(@NotNull Data data, @NotNull @Child("selector") SelectorComponent selector) {
+        this.data = Objects.requireNonNull(data);
+        this.selector = Objects.requireNonNull(selector);
+    }
+
+    @Override
+    public @NotNull Skill apply(@NotNull Mob mob, @NotNull InjectionStore injectionStore) {
+        return new Internal(mob, selector.apply(mob, injectionStore), data);
+    }
+
+    @DataObject
+    public record Data(@Nullable Trigger trigger,
+        @NotNull @ChildPath("selector") String selector,
+        float amount) {
+        @Default("trigger")
+        public static @NotNull ConfigElement defaultTrigger() {
+            return ConfigPrimitive.NULL;
+        }
+    }
+
+    private static class Internal extends TargetedSkill {
+        private final Data data;
+
+        private Internal(Mob self, Selector selector, Data data) {
+            super(self, selector);
+            this.data = data;
+        }
+
+        @Override
+        protected void useOnTarget(@NotNull Target target) {
+            target.forType(LivingEntity.class, livingEntity -> livingEntity.getAcquirable().sync(e -> {
+                LivingEntity entity = (LivingEntity) e;
+                entity.setHealth(entity.getHealth() + data.amount);
+            }));
+        }
+
+        @Override
+        public @Nullable Trigger trigger() {
+            return data.trigger;
+        }
+    }
+}