Improved the collision logic of bullets.

改进子弹的碰撞逻辑。

prefab/entitys/Character.tscn

@@ -24,7 +24,9 @@ animations = [{
 
 [node name="Player" type="CharacterBody2D"]
 collision_layer = 4
-collision_mask = 34
+collision_mask = 162
+platform_floor_layers = 4294967042
+platform_wall_layers = 128
 script = ExtResource("1_1dlls")
 MaxHp = 32
 CampId = "Default"

prefab/projectile/Catapult.tscn

@@ -9,16 +9,20 @@
 radius = 11.0
 
 [node name="curseOfTheUndead" type="CharacterBody2D"]
-collision_layer = 0
-collision_mask = 0
+collision_layer = 16
+collision_mask = 102
+slide_on_ceiling = false
+platform_floor_layers = 4294967042
+platform_wall_layers = 32
 script = ExtResource("1_ib3qh")
 Life = 5000
-Durability = 1.0
+Durability = 3.0
 MaxDamage = 3
 MinDamage = 10
 DamageType = 2
 KnockbackForce = Vector2(2, -3)
-Speed = 500.0
+Speed = 300.0
+EnableBounce = true
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 shape = SubResource("CircleShape2D_dgro2")

prefab/projectile/curseOfTheUndead.tscn

@@ -28,7 +28,7 @@ shape = SubResource("CircleShape2D_dgro2")
 
 [node name="CollisionDetectionArea" type="Area2D" parent="."]
 collision_layer = 16
-collision_mask = 78
+collision_mask = 206
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="CollisionDetectionArea"]
 shape = SubResource("CircleShape2D_8117d")

project.godot

@@ -151,12 +151,13 @@ locale/translations=PackedStringArray("res://locals/DeathInfo.en.translation", "
 [layer_names]
 
 2d_physics/layer_1="RoomArea"
-2d_physics/layer_2="Ground"
+2d_physics/layer_2="Floor"
 2d_physics/layer_3="Player"
 2d_physics/layer_4="PickAbleItem"
 2d_physics/layer_5="Projectile"
 2d_physics/layer_6="Platform"
 2d_physics/layer_7="Mob"
+2d_physics/layer_8="Wall"
 
 [physics]
 

scripts/Config.cs

@@ -425,12 +425,13 @@ public static class Config
     public static class LayerNumber
     {
         public const int RoomArea = 1;
-        public const int Ground = 2;
+        public const int Floor = 2;
         public const int Player = 3;
         public const int PickAbleItem = 4;
         public const int Projectile = 5;
         public const int Platform = 6;
         public const int Mob = 7;
+        public const int Wall = 8;
     }
 
     /// <summary>

scripts/character/CharacterTemplate.cs

@@ -286,7 +286,6 @@ public partial class CharacterTemplate : CharacterBody2D
             _healthBar.MaxValue = MaxHp;
         }
 
-
         ItemMarker2D = GetNode<Marker2D>("ItemMarker2D");
         _itemMarkerOriginalX = ItemMarker2D.Position.X;
         _animatedSprite2D = GetNode<AnimatedSprite2D>("AnimatedSprite2D");
@@ -303,6 +302,11 @@ public partial class CharacterTemplate : CharacterBody2D
             _pickingArea.BodyEntered += EnterThePickingRangeBody;
             _pickingArea.BodyExited += ExitThePickingRangeBody;
         }
+
+        //The character cannot pass through the wall and floor
+        //角色不能穿过墙壁和地板
+        SetCollisionMaskValue(Config.LayerNumber.Wall, true);
+        SetCollisionMaskValue(Config.LayerNumber.Floor, true);
     }
 
     /// <summary>
@@ -389,7 +393,8 @@ public partial class CharacterTemplate : CharacterBody2D
             pickAbleTemplate.Owner = this;
             pickAbleTemplate.Picked = true;
             pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Platform, false);
-            pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Ground, false);
+            pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Floor, false);
+            pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Wall, false);
             LogCat.Log("item_pickup_disables_collision_damage", LogCat.LogLabel.ContactInjury);
             pickAbleTemplate.EnableContactInjury = false;
             pickAbleTemplate.Sleeping = true;
@@ -759,7 +764,8 @@ public partial class CharacterTemplate : CharacterBody2D
                     //仍出武器时，我们不能立即恢复物理碰撞，立即恢复会导致武器更早的与地面和平台碰撞，阻止武器的飞行。
                     pickAbleTemplate.EnableContactInjury = true;
                     LogCat.Log("item_thrown_restore_collision_damage", LogCat.LogLabel.ContactInjury);
-                    pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Ground, true);
+                    pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Floor, true);
+                    pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Wall, true);
                     pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Platform, true);
                     timer.QueueFree();
                 };

scripts/projectile/Projectile.cs

@@ -19,8 +19,7 @@ public partial class Projectile : CharacterBody2D
     /// <para>life(ms)</para>
     /// <para>子弹的存在时间(毫秒)</para>
     /// </summary>
-    [Export]
-    public long Life;
+    [Export] public long Life;
 
     //The durability of the projectile
     //抛射体的耐久度
@@ -38,13 +37,6 @@ public partial class Projectile : CharacterBody2D
     /// </summary>
     private DateTime? _destructionTime;
 
-
-    /// <summary>
-    /// <para>The impact area of the bullet</para>
-    /// <para>子弹的碰撞区域</para>
-    /// </summary>
-    private Area2D? _area2D;
-
     /// <summary>
     /// <para>knockback</para>
     /// <para>击退</para>
@@ -53,11 +45,22 @@ public partial class Projectile : CharacterBody2D
     ///<para>How much force does it have when hitting the character? Unit: Number of cells，The X direction of the force is inferred automatically.</para>
     ///<para>当击中角色时带有多大的力？单位：格数，力的X方向是自动推断的。</para>
     /// </remarks>
-    [Export]
-    public Vector2 KnockbackForce;
+    [Export] public Vector2 KnockbackForce;
 
     [Export] public float Speed;
 
+    /// <summary>
+    /// <para>Whether it bounces back after hitting an enemy or a wall</para>
+    /// <para>是否撞到敌人或墙壁后反弹</para>
+    /// </summary>
+    [Export] public bool EnableBounce;
+
+    /// <summary>
+    /// <para>Can it penetrate the wall</para>
+    /// <para>是否可以穿透墙壁</para>
+    /// </summary>
+    [Export] public bool IgnoreWall;
+
     private List<IProjectileDecorator>? _projectileDecorators;
 
 
@@ -69,12 +72,6 @@ public partial class Projectile : CharacterBody2D
 
     public override void _Ready()
     {
-        //The bullet's impact detection area
-        //子弹的碰撞检测区域
-        _area2D = GetNode<Area2D>("CollisionDetectionArea");
-        _area2D.Monitoring = true;
-        _area2D.BodyEntered += OnBodyEnter;
-        _area2D.BodyExited += OnBodyExited;
         //If the existence time is less than or equal to 0, then it is set to exist for 10 seconds, and projectiles that exist indefinitely are prohibited
         //如果存在时间小于等于0，那么设置为存在10秒，禁止无限期存在的抛射体
         if (Life <= 0)
@@ -83,6 +80,11 @@ public partial class Projectile : CharacterBody2D
         }
 
         _destructionTime = DateTime.Now.AddMilliseconds(Life);
+        SetCollisionMaskValue(Config.LayerNumber.Wall, !IgnoreWall);
+        SetCollisionMaskValue(Config.LayerNumber.Floor, !IgnoreWall);
+        //Platform collision layer is not allowed to collide
+        //平台碰撞层不可碰撞
+        SetCollisionMaskValue(Config.LayerNumber.Platform, false);
     }
 
     /// <summary>
@@ -247,45 +249,6 @@ public partial class Projectile : CharacterBody2D
         }
     }
 
-    /// <summary>
-    /// <para>When the bullet is in contact with the node</para>
-    /// <para>当子弹与节点接触时</para>
-    /// </summary>
-    /// <param name="node"></param>
-    protected virtual void OnBodyEnter(Node2D node)
-    {
-        //Here we test whether harm is allowed, notice that for TileMap, we directly allow harm.
-        //这里我们检测是否允许造成伤害，注意对于TileMap，我们直接允许造成伤害。
-        var canCauseHarm = CanCauseHarm(Owner, node);
-        if (!canCauseHarm)
-        {
-            return;
-        }
-
-        DoDamage(Owner, node);
-        //Please specify in the Mask who the bullet will collide with
-        //请在Mask内配置子弹会和谁碰撞
-        //When a bullet hits an object, its durability decreases
-        //子弹撞击到物体时，耐久度减少
-        Durability--;
-        if (Durability <= 0)
-        {
-            //When the durability is less than or equal to 0, destroy the bullet
-            //当耐久度小于等于0时，销毁子弹
-            QueueFree();
-        }
-    }
-
-    /// <summary>
-    /// <para>When the bullet leaves the node</para>
-    /// <para>当子弹离开节点时</para>
-    /// </summary>
-    /// <param name="node"></param>
-    protected virtual void OnBodyExited(Node2D node)
-    {
-    }
-
-
     /// <summary>
     /// <para>When beyond the time of existence</para>
     /// <para>当超过存在时间</para>
@@ -307,6 +270,38 @@ public partial class Projectile : CharacterBody2D
 
     public override void _PhysicsProcess(double delta)
     {
-        MoveAndSlide();
+        var collisionInfo = MoveAndCollide(Velocity * (float)delta);
+        if (collisionInfo != null)
+        {
+            //Bump into other objects.
+            //撞到其他对象。
+            if (EnableBounce)
+            {
+                Velocity = Velocity.Bounce(collisionInfo.GetNormal());
+            }
+
+            //Here we test whether harm is allowed, notice that for TileMap, we directly allow harm.
+            //这里我们检测是否允许造成伤害，注意对于TileMap，我们直接允许造成伤害。
+            var godotObject = collisionInfo.GetCollider();
+            var node = (Node2D)godotObject;
+            var canCauseHarm = CanCauseHarm(Owner, node);
+            if (!canCauseHarm)
+            {
+                return;
+            }
+
+            DoDamage(Owner, node);
+            //Please specify in the Mask who the bullet will collide with
+            //请在Mask内配置子弹会和谁碰撞
+            //When a bullet hits an object, its durability decreases
+            //子弹撞击到物体时，耐久度减少
+            Durability--;
+            if (Durability <= 0)
+            {
+                //When the durability is less than or equal to 0, destroy the bullet
+                //当耐久度小于等于0时，销毁子弹
+                QueueFree();
+            }
+        }
     }
 }

tileSets/dungeon.tres

@@ -6,14 +6,14 @@
 texture = ExtResource("1_4c2am")
 texture_region_size = Vector2i(32, 32)
 0:0/0 = 0
-0:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+0:0/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 1:0/0 = 0
 1:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 1:1/0 = 0
 2:1/0 = 0
-2:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+2:1/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 2:2/0 = 0
-2:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+2:2/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 3:2/0 = 0
 3:4/0 = 0
 3:4/0/physics_layer_1/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, -6.75, 8.25, -6, 7, -2.25, 1, -2, -16, 16)
@@ -27,17 +27,18 @@ texture_region_size = Vector2i(32, 32)
 1:3/0 = 0
 1:3/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 1:2/0 = 0
-1:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+1:2/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 0:2/0 = 0
 0:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+0:2/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 0:1/0 = 0
-0:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+0:1/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 2:3/0 = 0
 2:3/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 3:1/0 = 0
 3:0/0 = 0
 2:0/0 = 0
-2:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
+2:0/0/physics_layer_2/polygon_0/points = PackedVector2Array(-16, -16, 16, -16, 16, 16, -16, 16)
 4:0/0 = 0
 4:1/0 = 0
 5:0/0 = 0
@@ -86,4 +87,6 @@ physics_layer_0/collision_layer = 2
 physics_layer_0/collision_mask = 0
 physics_layer_1/collision_layer = 32
 physics_layer_1/collision_mask = 0
+physics_layer_2/collision_layer = 128
+physics_layer_2/collision_mask = 0
 sources/1 = SubResource("TileSetAtlasSource_abxy2")