重写炮弹运动，优化瞄准算法

src/main/java/com/atsuishio/superbwarfare/client/gui/RangeHelper.java

@@ -1,149 +1,66 @@
 package com.atsuishio.superbwarfare.client.gui;
 
+import net.minecraft.util.Mth;
 import net.minecraft.world.phys.Vec3;
 
 public class RangeHelper {
 
-    public static final int MAX_RANGE = 1145;
-
     /**
      * 计算迫击炮理论水平射程
      *
      * @param thetaDegrees 发射角度（以度为单位），需要根据实际情况修改
+     * @param v            初始速度
+     * @param g            重力加速度
      */
-    public static double getRange(double thetaDegrees) {
+    public static double getRange(double thetaDegrees, double v, double g) {
-        double initialVelocity = 11.4; // 初始速度 11.4 m/s
+        double t = v * Math.sin(thetaDegrees * Mth.DEG_TO_RAD) / g * 2;
-        double thetaRadians = Math.toRadians(thetaDegrees); // 将角度转换为弧度
+        return t * v * Math.cos(thetaDegrees * Mth.DEG_TO_RAD);
-        double gravity = 0.146; // 重力加速度
-        double velocityDecay = 0.99; // 速度衰减系数
-
-        // 计算射程
-        return calculateRange(initialVelocity, thetaRadians, gravity, velocityDecay);
     }
 
-    public static double calculateRange(double initialVelocity, double theta, double gravity, double velocityDecay) {
+    // 谢谢DeepSeek
-        double vx = initialVelocity * Math.cos(theta); // 水平速度
-        double vy = initialVelocity * Math.sin(theta); // 垂直速度
 
-        double x = 0.0; // 水平位置
+    /**
-        double y = 1.0; // 垂直位置
+     * 判断按指定参数发射是否可以击中目标
+     *
+     * @param v                     初始速度
+     * @param g                     重力加速度
+     * @param startPos              起始位置
+     * @param endPos                目标位置
+     * @param minAngle              最小仰角
+     * @param maxAngle              最大仰角
+     * @param isDepressedTrajectory 是否使用低伸弹道
+     */
+    public static boolean canReach(double v, double g, Vec3 startPos, Vec3 endPos, double minAngle, double maxAngle, boolean isDepressedTrajectory) {
+        if (getD(v, g, startPos, endPos) < 0) return false;
 
-        // 当炮弹还未触地时，继续计算飞行轨迹
+        var targetAngle = calculateAngle(v, g, startPos, endPos, isDepressedTrajectory);
-        while (y >= 0) {
+        return targetAngle >= minAngle && targetAngle <= maxAngle;
-            // 更新位置
-            x += vx;
-            y += vy;
-
-            // 更新速度
-            vx *= velocityDecay;
-            vy = vy * velocityDecay - gravity;
-
-            // 如果炮弹触地，则跳出循环
-            if (y < 0) {
-                break;
-            }
-        }
-
-        // 返回最终水平距离
-        return x;
     }
 
-    public static double calculateRangeWithDeltaY(double initialVelocity, double theta, double gravity, double velocityDecay, double deltaY) {
+    /**
-        double vx = initialVelocity * Math.cos(theta); // 水平速度
+     * 计算按指定参数发射所需的仰角
-        double vy = initialVelocity * Math.sin(theta); // 垂直速度
+     *
-
+     * @param v                     初始速度
-        double range = 0.0; // 水平距离
+     * @param g                     重力加速度
-        double y = 1.0; // 垂直位置
+     * @param startPos              起始位置
-
+     * @param endPos                目标位置
-        double commonRange = calculateRange(initialVelocity, theta, gravity, velocityDecay);
+     * @param isDepressedTrajectory 是否使用低伸弹道
-
+     */
-        // 当炮弹还未触地时，继续计算飞行轨迹
+    public static double calculateAngle(double v, double g, Vec3 startPos, Vec3 endPos, boolean isDepressedTrajectory) {
-        while (range < commonRange / 2 || (range >= commonRange / 2 && y >= deltaY)) {
+        var xDiff = startPos.x - endPos.x;
-            // 更新位置
+        var zDiff = startPos.z - endPos.z;
-            range += vx;
+        var x = Math.sqrt(Math.pow(xDiff, 2) + Math.pow(zDiff, 2));
-            y += vy;
+        double d = getD(v, g, startPos, endPos);
-
+        return Math.atan((v * v + (isDepressedTrajectory ? -d : d)) / (g * x)) * Mth.RAD_TO_DEG;
-            // 更新速度
-            vx *= velocityDecay;
-            vy = vy * velocityDecay - gravity;
-
-            if (range >= commonRange / 2 && y < deltaY) {
-                break;
-            }
-        }
-
-        // 返回最终水平距离
-        return range;
     }
 
-    public static boolean canReachTarget(double initialVelocity, double gravity, double velocityDecay, Vec3 startPos, Vec3 targetPos, double[] angles) {
+    private static double getD(double v, double g, Vec3 startPos, Vec3 endPos) {
-        if (startPos.equals(targetPos)) {
+        var xDiff = startPos.x - endPos.x;
-            return false;
+        var zDiff = startPos.z - endPos.z;
-        }
+        var x = Math.sqrt(Math.pow(xDiff, 2) + Math.pow(zDiff, 2));
+        var y = startPos.y - endPos.y;
 
-        double startX = startPos.x;
+        return Math.sqrt(Math.pow(v, 4) - g * g * x * x - 2 * g * y * v * v);
-        double startY = startPos.y;
-        double startZ = startPos.z;
-
-        double targetX = targetPos.x;
-        double targetY = targetPos.y;
-        double targetZ = targetPos.z;
-
-        double distanceXZ = Math.sqrt(Math.pow(targetX - startX, 2) + Math.pow(targetZ - startZ, 2));
-        if (distanceXZ > MAX_RANGE) {
-            return false;
-        }
-
-        double theta = calculateLaunchAngle(initialVelocity, gravity, velocityDecay, distanceXZ, targetY - startY);
-
-        if (theta < 20 || theta > 90) {
-            return false;
-        }
-
-        angles[0] = Math.atan2(targetZ, targetX); // 水平角度
-        angles[1] = theta; // 炮口抬升角度
-        return true;
     }
 
-    public static double calculateLaunchAngle(double initialVelocity, double gravity, double velocityDecay, double distanceXZ, double targetY) {
-        double left = 20;  // 最小角度
-        double right = 30; // 最大角度
-        double tolerance = 0.5; // 允许的误差范围
-
-        // 在 20 到 30 之间搜索
-        while (right - left > tolerance) {
-            double mid = (left + right) / 2;
-            double radian = Math.toRadians(mid);
-            double range = calculateRangeWithDeltaY(initialVelocity, radian, gravity, velocityDecay, targetY);
-
-            if (Math.abs(range - distanceXZ) < tolerance * 8) {
-                return mid;
-            } else if (range < distanceXZ) {
-                left = mid;
-            } else {
-                right = mid;
-            }
-        }
-
-        // 如果在 20 到 30 之间没有找到合适的角度，则在 30 到 90 之间搜索
-        left = 30;
-        right = 90;
-
-        while (right - left > tolerance) {
-            double mid = (left + right) / 2;
-            double radian = Math.toRadians(mid);
-            double range = calculateRangeWithDeltaY(initialVelocity, radian, gravity, velocityDecay, targetY);
-
-            if (Math.abs(range - distanceXZ) < tolerance * 8) {
-                return mid;
-            } else if (range < distanceXZ) {
-                right = mid;
-            } else {
-                left = mid;
-            }
-        }
-
-        // 如果仍然没有找到合适的角度，则返回 -1
-        return -1;
-    }
 }

src/main/java/com/atsuishio/superbwarfare/client/overlay/MortarInfoOverlay.java

@@ -33,7 +33,7 @@ public class MortarInfoOverlay {
                             .append(Component.literal(FormatTool.format1D(mortar.getYRot(), "°"))),
                     w / 2 - 90, h / 2 - 16, -1, false);
             event.getGuiGraphics().drawString(Minecraft.getInstance().font, Component.translatable("tips.superbwarfare.mortar.range")
-                            .append(Component.literal(FormatTool.format1D((int) RangeHelper.getRange(-mortar.getXRot()), "m"))),
+                            .append(Component.literal(FormatTool.format1D((int) RangeHelper.getRange(-mortar.getXRot(), 11.4, 0.146), "m"))),
                     w / 2 - 90, h / 2 - 6, -1, false);
         }
     }

src/main/java/com/atsuishio/superbwarfare/component/ModDataComponents.java

@@ -1,10 +1,12 @@
 package com.atsuishio.superbwarfare.component;
 
 import com.atsuishio.superbwarfare.Mod;
+import com.atsuishio.superbwarfare.item.FiringParameters;
 import com.atsuishio.superbwarfare.item.common.ammo.box.AmmoBoxInfo;
 import com.atsuishio.superbwarfare.tools.AmmoType;
 import com.mojang.datafixers.util.Pair;
 import com.mojang.serialization.Codec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.component.DataComponentType;
 import net.minecraft.core.registries.Registries;
@@ -19,9 +21,14 @@ public class ModDataComponents {
     public static final DeferredRegister<DataComponentType<?>> DATA_COMPONENT_TYPES =
             DeferredRegister.createDataComponents(Registries.DATA_COMPONENT_TYPE, Mod.MODID);
 
-    public static final DeferredHolder<DataComponentType<?>, DataComponentType<BlockPos>> BLOCK_POS = register(
+    public static final DeferredHolder<DataComponentType<?>, DataComponentType<FiringParameters.Parameters>> FIRING_PARAMETERS = register(
-            "coordinates",
+            "firing_parameters",
-            builder -> builder.persistent(BlockPos.CODEC)
+            builder -> builder.persistent(RecordCodecBuilder.create(instance ->
+                    instance.group(
+                            BlockPos.CODEC.fieldOf("pos").forGetter(FiringParameters.Parameters::pos),
+                            Codec.BOOL.fieldOf("is_depressed").forGetter(FiringParameters.Parameters::isDepressed)
+                    ).apply(instance, FiringParameters.Parameters::new)
+            ))
     );
 
     public static final DeferredHolder<DataComponentType<?>, DataComponentType<Integer>> ENERGY = register(

src/main/java/com/atsuishio/superbwarfare/entity/MortarEntity.java

@@ -2,13 +2,13 @@ package com.atsuishio.superbwarfare.entity;
 
 import com.atsuishio.superbwarfare.Mod;
 import com.atsuishio.superbwarfare.client.gui.RangeHelper;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.entity.projectile.MortarShellEntity;
 import com.atsuishio.superbwarfare.entity.vehicle.base.VehicleEntity;
 import com.atsuishio.superbwarfare.init.ModEntities;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.item.common.ammo.MortarShell;
-import com.atsuishio.superbwarfare.tools.NBTTool;
 import net.minecraft.ChatFormatting;
 import net.minecraft.commands.arguments.EntityAnchorArgument;
 import net.minecraft.core.particles.ParticleTypes;
@@ -168,24 +168,29 @@ public class MortarEntity extends VehicleEntity implements GeoEntity {
     }
 
     public boolean setTarget(ItemStack stack) {
-        var tag = NBTTool.getTag(stack);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
-        double targetX = tag.getDouble("TargetX");
+        if (parameters == null) return false;
-        double targetY = tag.getDouble("TargetY");
+
-        double targetZ = tag.getDouble("TargetZ");
+        var pos = parameters.pos();
+        double targetX = pos.getX();
+        double targetY = pos.getY();
+        double targetZ = pos.getZ();
+        var isDepressed = parameters.isDepressed();
+
+        if (!RangeHelper.canReach(11.4, 0.146, this.getEyePosition(), new Vec3(targetX, targetY, targetZ), 20, 89, isDepressed)) {
+            return false;
+        }
 
         this.look(new Vec3(targetX, targetY, targetZ));
 
-        double[] angles = new double[2];
+        entityData.set(PITCH, (float) -RangeHelper.calculateAngle(
-        boolean flag = RangeHelper.canReachTarget(11.4, 0.146, 0.99,
+                11.4, 0.146,
-                new Vec3(this.getX(), this.getEyeY(), this.getZ()),
+                this.getEyePosition(),
                 new Vec3(targetX, targetY, targetZ),
-                angles);
+                parameters.isDepressed()
+        ));
 
-        if (flag) {
+        return true;
-            entityData.set(PITCH, (float) -angles[1]);
-        }
-
-        return flag;
     }
 
     private void look(Vec3 pTarget) {

src/main/java/com/atsuishio/superbwarfare/entity/projectile/CannonShellEntity.java

@@ -358,7 +358,7 @@ public class CannonShellEntity extends FastThrowableProjectile implements GeoEnt
 
     @Override
     protected double getDefaultGravity() {
-        return 0.05F;
+        return 0.2F;
     }
 
     @Override

src/main/java/com/atsuishio/superbwarfare/entity/projectile/FastThrowableProjectile.java

@@ -6,6 +6,7 @@ import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.projectile.ThrowableItemProjectile;
 import net.minecraft.world.level.Level;
+import net.minecraft.world.phys.Vec3;
 import net.neoforged.neoforge.entity.IEntityWithComplexSpawn;
 import net.neoforged.neoforge.network.PacketDistributor;
 
@@ -32,6 +33,25 @@ public abstract class FastThrowableProjectile extends ThrowableItemProjectile im
     @Override
     public void tick() {
         super.tick();
+
+        Vec3 vec3 = this.getDeltaMovement();
+        float friction;
+        if (this.isInWater()) {
+            friction = 0.8F;
+        } else {
+            friction = 0.99F;
+        }
+        // 撤销重力影响
+        vec3 = vec3.add(0, this.getGravity(), 0);
+        // 重新计算动量
+        this.setDeltaMovement(vec3.scale(1 / friction));
+        // 重新应用重力
+        this.applyGravity();
+
+        //
+        System.out.println(this.getDeltaMovement());
+
+        // 同步动量
         this.syncMotion();
     }
 

src/main/java/com/atsuishio/superbwarfare/entity/vehicle/AnnihilatorEntity.java

@@ -1,6 +1,7 @@
 package com.atsuishio.superbwarfare.entity.vehicle;
 
 import com.atsuishio.superbwarfare.Mod;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.config.server.ExplosionConfig;
 import com.atsuishio.superbwarfare.config.server.VehicleConfig;
 import com.atsuishio.superbwarfare.entity.projectile.C4Entity;
@@ -147,10 +148,14 @@ public class AnnihilatorEntity extends EnergyVehicleEntity implements GeoEntity,
     }
 
     public void setTarget(ItemStack stack) {
-        var tag = NBTTool.getTag(stack);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
-        int targetX = tag.getInt("TargetX");
+        if (parameters == null) return;
-        int targetY = tag.getInt("TargetY");
+
-        int targetZ = tag.getInt("TargetZ");
+        var pos = parameters.pos();
+        int targetX = pos.getX();
+        int targetY = pos.getY();
+        int targetZ = pos.getZ();
+
         this.look(new Vec3(targetX, targetY, targetZ));
     }
 

src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Mk42Entity.java

@@ -1,6 +1,8 @@
 package com.atsuishio.superbwarfare.entity.vehicle;
 
 import com.atsuishio.superbwarfare.Mod;
+import com.atsuishio.superbwarfare.client.gui.RangeHelper;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.config.server.ExplosionConfig;
 import com.atsuishio.superbwarfare.config.server.VehicleConfig;
 import com.atsuishio.superbwarfare.entity.vehicle.base.CannonEntity;
@@ -15,16 +17,16 @@ import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.init.ModTags;
 import com.atsuishio.superbwarfare.item.common.ammo.CannonShellItem;
 import com.atsuishio.superbwarfare.network.message.receive.ShakeClientMessage;
-import com.atsuishio.superbwarfare.tools.*;
+import com.atsuishio.superbwarfare.tools.CustomExplosion;
+import com.atsuishio.superbwarfare.tools.InventoryTool;
+import com.atsuishio.superbwarfare.tools.ParticleTool;
+import com.atsuishio.superbwarfare.tools.SoundTool;
 import net.minecraft.core.particles.ParticleTypes;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.network.protocol.Packet;
-import net.minecraft.network.protocol.game.ClientGamePacketListener;
 import net.minecraft.network.syncher.EntityDataAccessor;
 import net.minecraft.network.syncher.EntityDataSerializers;
 import net.minecraft.network.syncher.SynchedEntityData;
 import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerEntity;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.sounds.SoundSource;
@@ -144,36 +146,28 @@ public class Mk42Entity extends VehicleEntity implements GeoEntity, CannonEntity
     }
 
     public void setTarget(ItemStack stack) {
-        var tag = NBTTool.getTag(stack);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
-        int targetX = tag.getInt("TargetX");
+        if (parameters == null) return;
-        int targetY = tag.getInt("TargetY");
+
-        int targetZ = tag.getInt("TargetZ");
+        var pos = parameters.pos();
+        int targetX = pos.getX();
+        int targetY = pos.getY();
+        int targetZ = pos.getZ();
+
+        if (!RangeHelper.canReach(15, 0.2F, this.getEyePosition(), new Vec3(targetX, targetY, targetZ), -14.9, 85, parameters.isDepressed()))
+            return;
+
         this.look(new Vec3(targetX, targetY, targetZ));
+        entityData.set(PITCH, (float) -RangeHelper.calculateAngle(15, 0.2F, this.getEyePosition(), new Vec3(targetX, targetY, targetZ), parameters.isDepressed()));
     }
 
     private void look(Vec3 pTarget) {
         Vec3 vec3 = this.getEyePosition();
         double d0 = pTarget.x - vec3.x;
-        double d1 = pTarget.y - vec3.y;
         double d2 = pTarget.z - vec3.z;
-        double d3 = Math.sqrt(d0 * d0 + d2 * d2);
-        double distance = pTarget.distanceTo(vec3);
         entityData.set(YAW, Mth.wrapDegrees((float) (Mth.atan2(d2, d0) * 57.2957763671875) - 90.0F));
-        entityData.set(PITCH, Mth.wrapDegrees((float) (-(Mth.atan2(d1, d3) * 57.2957763671875))) - (float) (distance * 0.008f));
     }
 
-    // TODO addEntityPacket
-    @Override
-    public @NotNull Packet<ClientGamePacketListener> getAddEntityPacket(@NotNull ServerEntity entity) {
-        return super.getAddEntityPacket(entity);
-    }
-
-//    @Override
-//    public Packet<ClientGamePacketListener> getAddEntityPacket() {
-//        return NetworkHooks.getEntitySpawningPacket(this);
-//    }
-
-
     @Override
     public void positionRider(@NotNull Entity passenger, @NotNull MoveFunction callback) {
         if (!this.hasPassenger(passenger)) {

src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Mle1934Entity.java

@@ -1,6 +1,8 @@
 package com.atsuishio.superbwarfare.entity.vehicle;
 
 import com.atsuishio.superbwarfare.Mod;
+import com.atsuishio.superbwarfare.client.gui.RangeHelper;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.config.server.ExplosionConfig;
 import com.atsuishio.superbwarfare.config.server.VehicleConfig;
 import com.atsuishio.superbwarfare.entity.vehicle.base.CannonEntity;
@@ -15,7 +17,10 @@ import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.init.ModTags;
 import com.atsuishio.superbwarfare.item.common.ammo.CannonShellItem;
 import com.atsuishio.superbwarfare.network.message.receive.ShakeClientMessage;
-import com.atsuishio.superbwarfare.tools.*;
+import com.atsuishio.superbwarfare.tools.CustomExplosion;
+import com.atsuishio.superbwarfare.tools.InventoryTool;
+import com.atsuishio.superbwarfare.tools.ParticleTool;
+import com.atsuishio.superbwarfare.tools.SoundTool;
 import net.minecraft.core.particles.ParticleTypes;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.network.protocol.Packet;
@@ -147,22 +152,26 @@ public class Mle1934Entity extends VehicleEntity implements GeoEntity, CannonEnt
     }
 
     public void setTarget(ItemStack stack) {
-        var tag = NBTTool.getTag(stack);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
-        int targetX = tag.getInt("TargetX");
+        if (parameters == null) return;
-        int targetY = tag.getInt("TargetY");
+
-        int targetZ = tag.getInt("TargetZ");
+        var pos = parameters.pos();
+        int targetX = pos.getX();
+        int targetY = pos.getY();
+        int targetZ = pos.getZ();
+
+        if (!RangeHelper.canReach(15, 0.2F, this.getEyePosition(), new Vec3(targetX, targetY, targetZ), -2.7, 30, parameters.isDepressed()))
+            return;
+
         this.look(new Vec3(targetX, targetY, targetZ));
+        entityData.set(PITCH, (float) -RangeHelper.calculateAngle(15, 0.2F, this.getEyePosition(), new Vec3(targetX, targetY, targetZ), parameters.isDepressed()));
     }
 
     private void look(Vec3 pTarget) {
         Vec3 vec3 = this.getEyePosition();
         double d0 = pTarget.x - vec3.x;
-        double d1 = pTarget.y - vec3.y;
         double d2 = pTarget.z - vec3.z;
-        double d3 = Math.sqrt(d0 * d0 + d2 * d2);
-        double distance = pTarget.distanceTo(vec3);
         entityData.set(YAW, Mth.wrapDegrees((float) (Mth.atan2(d2, d0) * 57.2957763671875) - 90.0F));
-        entityData.set(PITCH, Mth.wrapDegrees((float) (-(Mth.atan2(d1, d3) * 57.2957763671875))) - (float) (distance * 0.008f));
     }
 
     @Override

src/main/java/com/atsuishio/superbwarfare/item/FiringParameters.java

@@ -4,18 +4,25 @@ import com.atsuishio.superbwarfare.component.ModDataComponents;
 import net.minecraft.ChatFormatting;
 import net.minecraft.core.BlockPos;
 import net.minecraft.network.chat.Component;
+import net.minecraft.world.InteractionHand;
 import net.minecraft.world.InteractionResult;
+import net.minecraft.world.InteractionResultHolder;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.TooltipFlag;
 import net.minecraft.world.item.context.UseOnContext;
+import net.minecraft.world.level.Level;
 import org.jetbrains.annotations.NotNull;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.List;
 
 public class FiringParameters extends Item {
 
+    public record Parameters(BlockPos pos, boolean isDepressed) {
+    }
+
     public FiringParameters() {
         super(new Properties().stacksTo(1));
     }
@@ -29,15 +36,39 @@ public class FiringParameters extends Item {
         BlockPos pos = pContext.getClickedPos();
         pos = pos.relative(pContext.getClickedFace());
 
-        stack.set(ModDataComponents.BLOCK_POS, pos);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
+        var isDepressed = parameters != null && parameters.isDepressed();
+
+        stack.set(ModDataComponents.FIRING_PARAMETERS, new Parameters(pos, isDepressed));
         return InteractionResult.SUCCESS;
     }
 
     @Override
-    public void appendHoverText(ItemStack stack, @NotNull TooltipContext context, @NotNull List<Component> tooltipComponents, @NotNull TooltipFlag tooltipFlag) {
+    @ParametersAreNonnullByDefault
-        var pos = stack.get(ModDataComponents.BLOCK_POS);
+    public @NotNull InteractionResultHolder<ItemStack> use(Level level, Player player, InteractionHand usedHand) {
-        if (pos == null) return;
+        if (!player.isCrouching()) return InteractionResultHolder.pass(player.getItemInHand(usedHand));
 
+        var stack = player.getItemInHand(usedHand);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
+        if (parameters == null) return InteractionResultHolder.fail(stack);
+
+        var isDepressed = !parameters.isDepressed();
+        stack.set(ModDataComponents.FIRING_PARAMETERS, new Parameters(parameters.pos(), isDepressed));
+        player.displayClientMessage(Component.translatable(
+                isDepressed
+                        ? "tips.superbwarfare.mortar.target_pos.depressed_trajectory"
+                        : "tips.superbwarfare.mortar.target_pos.lofted_trajectory"
+        ).withStyle(ChatFormatting.GREEN), true);
+
+        return InteractionResultHolder.success(stack);
+    }
+
+    @Override
+    public void appendHoverText(ItemStack stack, @NotNull TooltipContext context, @NotNull List<Component> tooltipComponents, @NotNull TooltipFlag tooltipFlag) {
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
+        if (parameters == null) return;
+
+        var pos = parameters.pos();
         tooltipComponents.add(Component.translatable("tips.superbwarfare.mortar.target_pos")
                 .withStyle(ChatFormatting.GRAY)
                 .append(Component.literal("["
@@ -46,5 +77,11 @@ public class FiringParameters extends Item {
                         + pos.getZ() + "]")
                 )
         );
+
+        tooltipComponents.add(Component.translatable(
+                parameters.isDepressed
+                        ? "tips.superbwarfare.mortar.target_pos.depressed_trajectory"
+                        : "tips.superbwarfare.mortar.target_pos.lofted_trajectory"
+        ).withStyle(ChatFormatting.GRAY));
     }
 }

src/main/java/com/atsuishio/superbwarfare/menu/FuMO25Menu.java

@@ -5,6 +5,7 @@ import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.init.ModBlocks;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.init.ModMenuTypes;
+import com.atsuishio.superbwarfare.item.FiringParameters;
 import com.atsuishio.superbwarfare.network.dataslot.ContainerEnergyData;
 import com.atsuishio.superbwarfare.network.dataslot.SimpleEnergyData;
 import net.minecraft.core.BlockPos;
@@ -80,7 +81,10 @@ public class FuMO25Menu extends EnergyMenu {
             ItemStack stack = this.container.getItem(0);
             if (stack.isEmpty()) return;
 
-            stack.set(ModDataComponents.BLOCK_POS, new BlockPos(this.posX, this.posY, this.posZ));
+            var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
+            var isDepressed = parameters != null && parameters.isDepressed();
+
+            stack.set(ModDataComponents.FIRING_PARAMETERS, new FiringParameters.Parameters(new BlockPos(this.posX, this.posY, this.posZ), isDepressed));
 
             this.resetPos();
             this.container.setChanged();

src/main/java/com/atsuishio/superbwarfare/network/message/send/DroneFireMessage.java

@@ -1,13 +1,16 @@
 package com.atsuishio.superbwarfare.network.message.send;
 
 import com.atsuishio.superbwarfare.Mod;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.entity.vehicle.DroneEntity;
 import com.atsuishio.superbwarfare.init.ModItems;
+import com.atsuishio.superbwarfare.item.FiringParameters;
 import com.atsuishio.superbwarfare.tools.EntityFindUtil;
 import com.atsuishio.superbwarfare.tools.NBTTool;
 import com.atsuishio.superbwarfare.tools.SeekTool;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.ChatFormatting;
+import net.minecraft.core.BlockPos;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.codec.ByteBufCodecs;
 import net.minecraft.network.codec.StreamCodec;
@@ -21,6 +24,8 @@ import net.minecraft.world.phys.Vec3;
 import net.neoforged.neoforge.network.handling.IPayloadContext;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Objects;
+
 public record DroneFireMessage(int msgType) implements CustomPacketPayload {
     public static final Type<DroneFireMessage> TYPE = new Type<>(Mod.loc("drone_fire"));
 
@@ -55,24 +60,23 @@ public record DroneFireMessage(int msgType) implements CustomPacketPayload {
                 }
 
                 ItemStack offStack = player.getOffhandItem();
-                var offTag = NBTTool.getTag(offStack);
+                var parameters = offStack.get(ModDataComponents.FIRING_PARAMETERS);
+                var isDepressed = parameters != null && parameters.isDepressed();
+
                 if (lookAtEntity) {
-                    offTag.putDouble("TargetX", lookingEntity.getX());
+                    offStack.set(ModDataComponents.FIRING_PARAMETERS, new FiringParameters.Parameters(lookingEntity.blockPosition(), isDepressed));
-                    offTag.putDouble("TargetY", lookingEntity.getY());
-                    offTag.putDouble("TargetZ", lookingEntity.getZ());
                 } else {
-                    offTag.putDouble("TargetX", hitPos.x());
+                    offStack.set(ModDataComponents.FIRING_PARAMETERS, new FiringParameters.Parameters(new BlockPos((int) hitPos.x, (int) hitPos.y, (int) hitPos.z), isDepressed));
-                    offTag.putDouble("TargetY", hitPos.y());
-                    offTag.putDouble("TargetZ", hitPos.z());
                 }
-                NBTTool.saveTag(offStack, offTag);
+
+                var pos = Objects.requireNonNull(offStack.get(ModDataComponents.FIRING_PARAMETERS)).pos();
 
                 player.displayClientMessage(Component.translatable("tips.superbwarfare.mortar.target_pos")
                         .withStyle(ChatFormatting.GRAY)
                         .append(Component.literal("["
-                                + offTag.getInt("TargetX")
+                                + pos.getX()
-                                + "," + offTag.getInt("TargetY")
+                                + "," + pos.getY()
-                                + "," + offTag.getInt("TargetZ")
+                                + "," + pos.getZ()
                                 + "]")), true);
             }
         }

src/main/java/com/atsuishio/superbwarfare/network/message/send/SetFiringParametersMessage.java

@@ -1,10 +1,12 @@
 package com.atsuishio.superbwarfare.network.message.send;
 
 import com.atsuishio.superbwarfare.Mod;
-import com.atsuishio.superbwarfare.tools.NBTTool;
+import com.atsuishio.superbwarfare.component.ModDataComponents;
+import com.atsuishio.superbwarfare.item.FiringParameters;
 import com.atsuishio.superbwarfare.tools.TraceTool;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.ChatFormatting;
+import net.minecraft.core.BlockPos;
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.codec.ByteBufCodecs;
 import net.minecraft.network.codec.StreamCodec;
@@ -18,6 +20,8 @@ import net.minecraft.world.phys.Vec3;
 import net.neoforged.neoforge.network.handling.IPayloadContext;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Objects;
+
 public record SetFiringParametersMessage(int msgType) implements CustomPacketPayload {
     public static final Type<SetFiringParametersMessage> TYPE = new Type<>(Mod.loc("set_firing_parameters"));
 
@@ -41,25 +45,23 @@ public record SetFiringParametersMessage(int msgType) implements CustomPacketPay
             lookAtEntity = true;
         }
 
-        var tag = NBTTool.getTag(stack);
+        var parameters = stack.get(ModDataComponents.FIRING_PARAMETERS);
+        var isDepressed = parameters != null && parameters.isDepressed();
+
         if (lookAtEntity) {
-            tag.putDouble("TargetX", lookingEntity.getX());
+            stack.set(ModDataComponents.FIRING_PARAMETERS, new FiringParameters.Parameters(lookingEntity.blockPosition(), isDepressed));
-            tag.putDouble("TargetY", lookingEntity.getY());
-            tag.putDouble("TargetZ", lookingEntity.getZ());
         } else {
-            tag.putDouble("TargetX", hitPos.x());
+            stack.set(ModDataComponents.FIRING_PARAMETERS, new FiringParameters.Parameters(new BlockPos((int) hitPos.x, (int) hitPos.y, (int) hitPos.z), isDepressed));
-            tag.putDouble("TargetY", hitPos.y());
-            tag.putDouble("TargetZ", hitPos.z());
         }
-        NBTTool.saveTag(stack, tag);
+
+        var pos = Objects.requireNonNull(stack.get(ModDataComponents.FIRING_PARAMETERS)).pos();
 
         player.displayClientMessage(Component.translatable("tips.superbwarfare.mortar.target_pos")
                 .withStyle(ChatFormatting.GRAY)
-                .append(Component.literal("[" + tag.getInt("TargetX")
+                .append(Component.literal("[" + pos.getX()
-                        + "," + tag.getInt("TargetY")
+                        + "," + pos.getY()
-                        + "," + tag.getInt("TargetZ")
+                        + "," + pos.getZ()
                         + "]")), true);
-
     }
 
     @Override

src/main/resources/assets/superbwarfare/lang/en_us.json

@@ -502,6 +502,8 @@
   "tips.superbwarfare.mortar.yaw": "Yaw: ",
   "tips.superbwarfare.mortar.pitch": "Pitch: ",
   "tips.superbwarfare.mortar.target_pos": "Target Position: ",
+  "tips.superbwarfare.mortar.target_pos.depressed_trajectory": "Depressed Trajectory",
+  "tips.superbwarfare.mortar.target_pos.lofted_trajectory": "Lofted Trajectory",
   "tips.superbwarfare.mortar.warn": "The mortar cannot aim at this position",
 
   "container.superbwarfare.reforging_table": "Gun Reforge Table",

src/main/resources/assets/superbwarfare/lang/zh_cn.json

@@ -500,6 +500,8 @@
   "tips.superbwarfare.mortar.yaw": "水平朝向：",
   "tips.superbwarfare.mortar.pitch": "俯仰角度：",
   "tips.superbwarfare.mortar.target_pos": "目标坐标：",
+  "tips.superbwarfare.mortar.target_pos.depressed_trajectory": "低伸弹道",
+  "tips.superbwarfare.mortar.target_pos.lofted_trajectory": "传统弹道",
   "tips.superbwarfare.mortar.warn": "迫击炮无法瞄准该位置",
 
   "container.superbwarfare.reforging_table": "枪械重铸台",