允许获取命中的OBB部件

src/main/java/com/atsuishio/superbwarfare/entity/mixin/OBBHitter.java

@@ -0,0 +1,21 @@
+package com.atsuishio.superbwarfare.entity.mixin;
+
+import com.atsuishio.superbwarfare.tools.OBB;
+import net.minecraft.world.entity.Entity;
+
+public interface OBBHitter {
+
+    static OBBHitter getInstance(Entity entity) {
+        return (OBBHitter) entity;
+    }
+
+    /**
+     * 获取当前命中部分
+     */
+    OBB.Part sbw$getCurrentHitPart();
+
+    /**
+     * 设置当前命中部分
+     */
+    void sbw$setCurrentHitPart(OBB.Part part);
+}

src/main/java/com/atsuishio/superbwarfare/entity/vehicle/base/VehicleEntity.java

@@ -2,6 +2,7 @@ package com.atsuishio.superbwarfare.entity.vehicle.base;
 
 import com.atsuishio.superbwarfare.Mod;
 import com.atsuishio.superbwarfare.data.vehicle.VehicleData;
+import com.atsuishio.superbwarfare.entity.mixin.OBBHitter;
 import com.atsuishio.superbwarfare.entity.vehicle.DroneEntity;
 import com.atsuishio.superbwarfare.entity.vehicle.damage.DamageModifier;
 import com.atsuishio.superbwarfare.entity.vehicle.weapon.VehicleWeapon;
@@ -48,6 +49,7 @@ import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.Pose;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.entity.projectile.AbstractArrow;
+import net.minecraft.world.entity.projectile.Projectile;
 import net.minecraft.world.entity.vehicle.DismountHelper;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.Level;
@@ -428,6 +430,12 @@ public abstract class VehicleEntity extends Entity {
             repairCoolDown = maxRepairCoolDown();
         }
 
+        // TODO 这里可以获取击中的部位，给需要的载具加一个部位受伤方法
+        if (source.getDirectEntity() instanceof Projectile projectile) {
+            OBBHitter accessor = OBBHitter.getInstance(projectile);
+//            System.out.println(accessor.sbw$getCurrentHitPart());
+        }
+
         this.onHurt(computedAmount, source.getEntity(), true);
         return super.hurt(source, computedAmount);
     }
@@ -449,10 +457,8 @@ public abstract class VehicleEntity extends Entity {
 
         if (attacker != null) {
             Vec3 toVec = new Vec3(getX(), getY() + getBbHeight() / 2, getZ()).vectorTo(attacker.position()).normalize();
-            float angle = (float) java.lang.Math.abs(VectorTool.calculateAngle(this.position().vectorTo(attacker.position()), this.getViewVector(1)));
+            return (float) Math.max(1f - multiply * toVec.dot(getViewVector(1)), 0.5f);
-            return (float) java.lang.Math.max(1f - multiply * toVec.dot(getViewVector(1)), 0.5f);
         }
-
         return 1;
     }
 

src/main/java/com/atsuishio/superbwarfare/mixins/EntityMixin.java

@@ -1,6 +1,8 @@
 package com.atsuishio.superbwarfare.mixins;
 
+import com.atsuishio.superbwarfare.entity.mixin.OBBHitter;
 import com.atsuishio.superbwarfare.entity.vehicle.base.MobileVehicleEntity;
+import com.atsuishio.superbwarfare.tools.OBB;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.phys.Vec3;
 import org.spongepowered.asm.mixin.Mixin;
@@ -11,7 +13,7 @@ import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(Entity.class)
-public class EntityMixin {
+public class EntityMixin implements OBBHitter {
 
     /**
      * From Automobility
@@ -38,6 +40,19 @@ public class EntityMixin {
         }
     }
 
+    @Unique
+    public OBB.Part sbw$currentHitPart;
+
+    @Override
+    public OBB.Part sbw$getCurrentHitPart() {
+        return this.sbw$currentHitPart;
+    }
+
+    @Override
+    public void sbw$setCurrentHitPart(OBB.Part part) {
+        this.sbw$currentHitPart = part;
+    }
+
     // TODO 优化后续逻辑
 //    @Redirect(method = "turn(DD)V", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/entity/Entity;setXRot(F)V", ordinal = 1))
 //    public void turn(Entity instance, float pXRot) {

src/main/java/com/atsuishio/superbwarfare/mixins/ProjectileUtilMixin.java

@@ -1,10 +1,9 @@
 package com.atsuishio.superbwarfare.mixins;
 
 import com.atsuishio.superbwarfare.entity.OBBEntity;
-import com.atsuishio.superbwarfare.entity.vehicle.Bmp2Entity;
+import com.atsuishio.superbwarfare.entity.mixin.OBBHitter;
 import com.atsuishio.superbwarfare.init.ModParticleTypes;
 import com.atsuishio.superbwarfare.init.ModSounds;
-import com.atsuishio.superbwarfare.tools.OBB;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.particles.ParticleTypes;
 import net.minecraft.server.level.ServerLevel;
@@ -25,7 +24,6 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 import java.util.Optional;
 import java.util.function.Predicate;
 
-import static com.atsuishio.superbwarfare.entity.vehicle.Bmp2Entity.TURRET_DAMAGED;
 import static com.atsuishio.superbwarfare.tools.ParticleTool.sendParticle;
 
 @Mixin(ProjectileUtil.class)
@@ -47,6 +45,9 @@ public class ProjectileUtilMixin {
                         double d1 = pStartVec.distanceToSqr(new Vec3(optional.get()));
                         if (d1 < Double.MAX_VALUE) {
                             EntityHitResult hitResult = new EntityHitResult(entity, new Vec3(optional.get()));
+                            var acc = OBBHitter.getInstance(pProjectile);
+                            acc.sbw$setCurrentHitPart(obb.part());
+
                             cir.setReturnValue(hitResult);
                             if (pLevel instanceof ServerLevel serverLevel && pProjectile.getDeltaMovement().lengthSqr() > 0.01) {
                                 Vec3 hitPos = hitResult.getLocation();
@@ -55,9 +56,6 @@ public class ProjectileUtilMixin {
                                 sendParticle(serverLevel, ParticleTypes.SMOKE, hitPos.x, hitPos.y, hitPos.z, 2, 0, 0, 0, 0.01, false);
                             }
                         }
-                        if (obbEntity instanceof Bmp2Entity bmp2 && obb.part() == OBB.Part.TURRET) {
-                            bmp2.getEntityData().set(TURRET_DAMAGED, true);
-                        }
                     }
                 }
             }

src/main/java/com/atsuishio/superbwarfare/tools/OBB.java

@@ -15,6 +15,7 @@ import java.util.Optional;
  * @param center   旋转中心
  * @param extents  三个轴向上的半长
  * @param rotation 旋转
+ * @param part     部件
  */
 public record OBB(Vector3f center, Vector3f extents, Quaternionf rotation, Part part) {
 
@@ -257,10 +258,11 @@ public record OBB(Vector3f center, Vector3f extents, Quaternionf rotation, Part
     }
 
     public enum Part {
-        WHEEL_LEFT(),
+        EMPTY,
-        WHEEL_RIGHT(),
+        WHEEL_LEFT,
-        TURRET(),
+        WHEEL_RIGHT,
-        ENGINE(),
+        TURRET,
-        BODY();
+        ENGINE,
+        BODY
     }
 }