Bullets can now track enemies.

子弹可以跟踪敌人了。

prefab/projectile/Catapult.tscn

@@ -15,14 +15,15 @@ slide_on_ceiling = false
 platform_floor_layers = 4294967042
 platform_wall_layers = 32
 script = ExtResource("1_ib3qh")
-Life = 5000
+Life = 30000
 Durability = 3.0
 MaxDamage = 3
 MinDamage = 10
 DamageType = 2
 KnockbackForce = Vector2(2, -3)
 Speed = 300.0
-EnableBounce = true
+IgnoreWall = true
+EnableTracking = true
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 shape = SubResource("CircleShape2D_dgro2")

prefab/projectile/curseOfTheUndead.tscn

@@ -12,13 +12,14 @@ radius = 11.0
 collision_layer = 0
 collision_mask = 0
 script = ExtResource("1_ib3qh")
-Life = 5000
+Life = 30000
 Durability = 1.0
 MaxDamage = 3
 MinDamage = 10
 DamageType = 2
 KnockbackForce = Vector2(2, -3)
 Speed = 500.0
+IgnoreWall = true
 
 [node name="CurseOfTheUndead" type="Sprite2D" parent="."]
 texture = ExtResource("1_k8el6")

prefab/weapons/StaffNecromancy.tscn

@@ -1,8 +1,7 @@
-[gd_scene load_steps=9 format=3 uid="uid://dnnn2xyayiehk"]
+[gd_scene load_steps=8 format=3 uid="uid://dnnn2xyayiehk"]
 
 [ext_resource type="Texture2D" uid="uid://wt50kx6bup51" path="res://sprites/weapon/StaffNecromancy.png" id="1_ms3us"]
 [ext_resource type="Script" path="res://scripts/weapon/ProjectileWeapon.cs" id="1_w8hhv"]
-[ext_resource type="PackedScene" uid="uid://c01av43yk1q71" path="res://prefab/projectile/curseOfTheUndead.tscn" id="2_34250"]
 [ext_resource type="Texture2D" uid="uid://dg5vwprt66w4j" path="res://sprites/weapon/StaffNecromancy_Icon.png" id="3_31iau"]
 [ext_resource type="PackedScene" uid="uid://bdxgx5vcof8em" path="res://prefab/projectile/Catapult.tscn" id="3_hk5nr"]
 [ext_resource type="AudioStream" uid="uid://cak6chjjsu7wo" path="res://sounds/fire.wav" id="4_ffr2k"]
@@ -18,9 +17,8 @@ collision_layer = 8
 collision_mask = 34
 angular_damp = -1.0
 script = ExtResource("1_w8hhv")
-OffsetAngle = 0.523
+OffsetAngle = 0.087
-NumberOfProjectiles = 15.0
+ProjectileScenes = [ExtResource("3_hk5nr")]
-ProjectileScenes = [ExtResource("2_34250"), ExtResource("3_hk5nr")]
 Sequentially = true
 FiringIntervalAsMillisecond = 300
 UniqueIcon = ExtResource("3_31iau")

scripts/Config.cs

@@ -418,6 +418,30 @@ public static class Config
     public const int VerticalVelocityOfDamageNumbers = 5;
 
 
+    public static class OffsetAngleMode
+    {
+
+        /// <summary>
+        /// <para>Random(Default)</para>
+        /// <para>随机的（默认）</para>
+        /// </summary>
+        public const int Random = 0;
+        
+        /// <summary>
+        /// <para>AlwaysSame</para>
+        /// <para>永远不变的偏移角度</para>
+        /// </summary>
+        public const int AlwaysSame = 1;
+        
+        /// <summary>
+        /// <para>Cross</para>
+        /// <para>交叉变换</para>
+        /// </summary>
+        public const int Cross = 2;
+        
+      
+    }
+    
     /// <summary>
     /// <para>Physical collision layer number</para>
     /// <para>物理碰撞层 序号</para>

scripts/character/AiCharacter.cs

@@ -341,7 +341,7 @@ public sealed partial class AiCharacter : CharacterTemplate
         if (NavigationAgent2D != null && IsOnFloor())
         {
             var nextPathPosition = NavigationAgent2D.GetNextPathPosition();
-            var direction = (nextPathPosition - GlobalPosition).Normalized();
+            var direction = GlobalPosition.DirectionTo(nextPathPosition);
             velocity = direction * Config.CellSize * Speed * ProtectedSpeedScale;
         }
     }

scripts/loader/uiLoader/SplashScreenLoader.cs

@@ -111,7 +111,10 @@ public partial class SplashScreenLoader : UiLoaderTemplate
             FriendInjury = true
         };
         CampManager.SetDefaultCamp(defaultCamp);
-        var mazoku = new Camp(Config.CampId.Mazoku);
+        var mazoku = new Camp(Config.CampId.Mazoku)
+        {
+            FriendInjury = true
+        };
         CampManager.AddCamp(mazoku);
         var aborigines = new Camp(Config.CampId.Aborigines);
         CampManager.AddCamp(aborigines);

scripts/projectile/Projectile.cs

@@ -61,6 +61,18 @@ public partial class Projectile : CharacterBody2D
     /// </summary>
     [Export] public bool IgnoreWall;
 
+    /// <summary>
+    /// <para>Enable the tracking of the enemy</para>
+    /// <para>启用追踪敌人的功能</para>
+    /// </summary>
+    [Export] public bool EnableTracking;
+
+    /// <summary>
+    /// <para>The target</para>
+    /// <para>设置目标</para>
+    /// </summary>
+    public Node2D? Target { get; set; }
+
     private List<IProjectileDecorator>? _projectileDecorators;
 
 
@@ -271,7 +283,23 @@ public partial class Projectile : CharacterBody2D
     public override void _PhysicsProcess(double delta)
     {
         var collisionInfo = MoveAndCollide(Velocity * (float)delta);
-        if (collisionInfo != null)
+        if (collisionInfo == null)
+        {
+            //No collision.
+            //没有撞到任何东西。
+            if (EnableTracking && Target != null)
+            {
+                //Track the target
+                //追踪目标
+                //Gets a vector of the projectile pointing at the enemy's position.
+                //得到抛射体指向敌人位置的向量。
+                var desiredVelocity = GlobalPosition.DirectionTo(Target.GlobalPosition) * Speed;
+                //The weight is smaller, the circle is larger.
+                //weight越小，子弹绕的圈越大。
+                Velocity = Velocity.Lerp(desiredVelocity, 0.1f);
+            }
+        }
+        else
         {
             //Bump into other objects.
             //撞到其他对象。

scripts/weapon/ProjectileWeapon.cs

@@ -27,7 +27,19 @@ public partial class ProjectileWeapon : WeaponTemplate
     /// <para>散射弧度</para>
     /// </summary>
     [Export] protected float OffsetAngle;
-    
+
+    /// <summary>
+    /// <para>Offset angle mode</para>
+    /// <para>偏移角度模式</para>
+    /// </summary>
+    [Export] protected int OffsetAngleMode = Config.OffsetAngleMode.Random;
+
+    /// <summary>
+    /// <para>Whether the last offset angle is positive</para>
+    /// <para>上次的偏移角度是否为正向的</para>
+    /// </summary>
+    private bool _positiveOffsetAngle = true;
+
     /// <summary>
     /// <para>The number of projectiles fired at once</para>
     /// <para>一次可以发射多少个子弹</para>
@@ -69,6 +81,7 @@ public partial class ProjectileWeapon : WeaponTemplate
         }
     }
 
+
     /// <summary>
     /// <para>GetRandomAngle</para>
     /// <para>获取随机的偏移弧度</para>
@@ -83,6 +96,27 @@ public partial class ProjectileWeapon : WeaponTemplate
             return 0;
         }
 
+        if (OffsetAngleMode == Config.OffsetAngleMode.Cross)
+        {
+            float result;
+            if (_positiveOffsetAngle)
+            {
+                result = -OffsetAngle / 2;
+            }
+            else
+            {
+                result = OffsetAngle / 2;
+            }
+
+            _positiveOffsetAngle = !_positiveOffsetAngle;
+            return result;
+        }
+
+        if (OffsetAngleMode == Config.OffsetAngleMode.AlwaysSame)
+        {
+            return OffsetAngle;
+        }
+
         var min = -OffsetAngle / 2;
         return min + RandomUtils.Instance.NextSingle() * OffsetAngle;
     }
@@ -136,7 +170,8 @@ public partial class ProjectileWeapon : WeaponTemplate
             NodeUtils.CallDeferredAddChild(GameSceneNodeHolder.ProjectileContainer, projectile);
             projectile.Owner = owner;
             projectile.Velocity =
-                ((enemyGlobalPosition - _marker2D.GlobalPosition).Normalized() * projectile.Speed).Rotated(GetRandomAngle());
+                (_marker2D.GlobalPosition.DirectionTo(enemyGlobalPosition) * projectile.Speed)
+                .Rotated(GetRandomAngle());
             projectile.Position = _marker2D.GlobalPosition;
         }
     }