From 2a5629fc863f07b229e408ac32498c6353b9f062 Mon Sep 17 00:00:00 2001
From: Cold-Mint <cold_mint@qq.com>
Date: Sun, 18 Aug 2024 16:09:31 +0800
Subject: [PATCH] =?UTF-8?q?Projectiles=20can=20now=20track=20enemies.=20?=
 =?UTF-8?q?=E6=8A=9B=E5=B0=84=E4=BD=93=E5=8F=AF=E4=BB=A5=E8=B7=9F=E8=B8=AA?=
 =?UTF-8?q?=E6=95=8C=E4=BA=BA=E4=BA=86=E3=80=82?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../entitys/BlackenedAboriginalWarrior.tscn   |  8 ++++
 prefab/entitys/DelivererOfDarkMagic.tscn      | 11 +++++
 prefab/projectile/Catapult.tscn               |  2 -
 prefab/projectile/curseOfTheUndead.tscn       |  4 +-
 prefab/ui/HealthBar.tscn                      |  5 --
 scenes/game.tscn                              |  7 +++
 scenes/gameOverMenu.tscn                      |  8 ++++
 scripts/GameSceneNodeHolder.cs                | 12 +++--
 scripts/character/CharacterTemplate.cs        | 48 +++++++++++++++++++
 scripts/projectile/Projectile.cs              | 25 ++++++++--
 scripts/weapon/ProjectileWeapon.cs            |  1 +
 11 files changed, 116 insertions(+), 15 deletions(-)

diff --git a/prefab/entitys/BlackenedAboriginalWarrior.tscn b/prefab/entitys/BlackenedAboriginalWarrior.tscn
index 8a4a478..cabf9a9 100644
--- a/prefab/entitys/BlackenedAboriginalWarrior.tscn
+++ b/prefab/entitys/BlackenedAboriginalWarrior.tscn
@@ -98,3 +98,11 @@ collision_mask = 76
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="ScoutArea2D"]
 shape = SubResource("CircleShape2D_fowd5")
+
+[node name="TipLabel" type="Label" parent="."]
+offset_left = -20.0
+offset_top = 46.0
+offset_right = 15.0
+offset_bottom = 71.0
+text = "name"
+horizontal_alignment = 1
diff --git a/prefab/entitys/DelivererOfDarkMagic.tscn b/prefab/entitys/DelivererOfDarkMagic.tscn
index 86c6515..fc50fc5 100644
--- a/prefab/entitys/DelivererOfDarkMagic.tscn
+++ b/prefab/entitys/DelivererOfDarkMagic.tscn
@@ -99,3 +99,14 @@ collision_mask = 76
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="ScoutArea2D"]
 shape = SubResource("CircleShape2D_fowd5")
+
+[node name="TipLabel" type="Label" parent="."]
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -57.0
+offset_top = 57.0
+offset_right = 61.0
+offset_bottom = 82.0
+grow_horizontal = 2
+horizontal_alignment = 1
diff --git a/prefab/projectile/Catapult.tscn b/prefab/projectile/Catapult.tscn
index 8c4a986..78c0088 100644
--- a/prefab/projectile/Catapult.tscn
+++ b/prefab/projectile/Catapult.tscn
@@ -16,8 +16,6 @@ platform_floor_layers = 4294967042
 platform_wall_layers = 32
 script = ExtResource("1_ib3qh")
 Speed = 300.0
-IgnoreWall = true
-EnableTracking = true
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 shape = SubResource("CircleShape2D_dgro2")
diff --git a/prefab/projectile/curseOfTheUndead.tscn b/prefab/projectile/curseOfTheUndead.tscn
index 543ba4b..059d6e8 100644
--- a/prefab/projectile/curseOfTheUndead.tscn
+++ b/prefab/projectile/curseOfTheUndead.tscn
@@ -14,8 +14,10 @@ _durability = 1.0
 _maxDamage = 10
 _minDamage = 1
 _damageType = 2
-_knockbackForce = Vector2(60, 0)
+_knockBackForce = Vector2(0, 1)
 Speed = 500.0
+_enableTracking = true
+_targetDiesDestroyProjectile = true
 
 [node name="CurseOfTheUndead" type="Sprite2D" parent="."]
 texture = ExtResource("1_k8el6")
diff --git a/prefab/ui/HealthBar.tscn b/prefab/ui/HealthBar.tscn
index 7bc5fda..ec0c6a5 100644
--- a/prefab/ui/HealthBar.tscn
+++ b/prefab/ui/HealthBar.tscn
@@ -12,8 +12,3 @@ texture_under = ExtResource("1_sc0v3")
 texture_over = ExtResource("2_ay5vh")
 texture_progress = ExtResource("2_s0gle")
 script = ExtResource("4_84gre")
-
-[node name="Label" type="Label" parent="."]
-layout_mode = 0
-offset_right = 40.0
-offset_bottom = 23.0
diff --git a/scenes/game.tscn b/scenes/game.tscn
index 77b2408..77286a6 100644
--- a/scenes/game.tscn
+++ b/scenes/game.tscn
@@ -21,6 +21,7 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+mouse_filter = 2
 
 [node name="VBoxContainer" type="VBoxContainer" parent="CanvasLayer/Control"]
 layout_mode = 1
@@ -34,25 +35,31 @@ offset_right = -20.0
 offset_bottom = -20.0
 grow_horizontal = 2
 grow_vertical = 0
+mouse_filter = 2
 
 [node name="HealthBarUi" type="HBoxContainer" parent="CanvasLayer/Control/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 script = ExtResource("2_xrm3v")
 
 [node name="TextureRect3" type="TextureRect" parent="CanvasLayer/Control/VBoxContainer/HealthBarUi"]
 layout_mode = 2
+mouse_filter = 2
 texture = ExtResource("2_n1yht")
 
 [node name="HotBar" type="HBoxContainer" parent="CanvasLayer/Control/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 script = ExtResource("2_owrhq")
 
 [node name="TextureRect3" type="TextureRect" parent="CanvasLayer/Control/VBoxContainer/HotBar"]
 layout_mode = 2
+mouse_filter = 2
 texture = ExtResource("2_n1yht")
 
 [node name="OperationTip" type="RichTextLabel" parent="CanvasLayer/Control/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 bbcode_enabled = true
 fit_content = true
 
diff --git a/scenes/gameOverMenu.tscn b/scenes/gameOverMenu.tscn
index 5b8e2a7..0e7cee3 100644
--- a/scenes/gameOverMenu.tscn
+++ b/scenes/gameOverMenu.tscn
@@ -9,6 +9,7 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+mouse_filter = 2
 script = ExtResource("1_vj6du")
 
 [node name="ColorRect" type="ColorRect" parent="."]
@@ -18,6 +19,7 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+mouse_filter = 2
 color = Color(0.941176, 0.243137, 0.243137, 0.258824)
 
 [node name="CenterContainer" type="CenterContainer" parent="."]
@@ -27,12 +29,15 @@ anchor_right = 1.0
 anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
+mouse_filter = 2
 
 [node name="VBoxContainer" type="VBoxContainer" parent="CenterContainer"]
 layout_mode = 2
+mouse_filter = 2
 
 [node name="CenterContainer" type="CenterContainer" parent="CenterContainer/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 
 [node name="GameOverLabel" type="Label" parent="CenterContainer/VBoxContainer/CenterContainer"]
 layout_mode = 2
@@ -41,10 +46,12 @@ text = "ui_game_over_title"
 
 [node name="MarginContainer" type="MarginContainer" parent="CenterContainer/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 theme_override_constants/margin_top = 18
 
 [node name="CenterContainer2" type="CenterContainer" parent="CenterContainer/VBoxContainer/MarginContainer"]
 layout_mode = 2
+mouse_filter = 2
 
 [node name="DeathInfoLabel" type="Label" parent="CenterContainer/VBoxContainer/MarginContainer/CenterContainer2"]
 layout_mode = 2
@@ -52,6 +59,7 @@ text = "ui_death_info_describe"
 
 [node name="MarginContainer2" type="MarginContainer" parent="CenterContainer/VBoxContainer"]
 layout_mode = 2
+mouse_filter = 2
 theme_override_constants/margin_top = 10
 theme_override_constants/margin_bottom = 150
 
diff --git a/scripts/GameSceneNodeHolder.cs b/scripts/GameSceneNodeHolder.cs
index bdcd319..d98ef29 100644
--- a/scripts/GameSceneNodeHolder.cs
+++ b/scripts/GameSceneNodeHolder.cs
@@ -35,12 +35,18 @@ public static class GameSceneNodeHolder
         }
     }
 
+    /// <summary>
+    /// <para>When the mouse enters the scope of a character, it is considered a target</para>
+    /// <para>鼠标进入到某个角色的范围内时，会将其视作目标</para>
+    /// </summary>
+    public static Node2D? TemporaryTargetNode { get; set; }
+
     /// <summary>
     /// <para>ProjectileContainer</para>
     /// <para>抛射体容器</para>
     /// </summary>
     public static Node2D? ProjectileContainer { get; set; }
-    
+
     /// <summary>
     /// <para>WeaponContainer</para>
     /// <para>武器容器</para>
@@ -113,16 +119,14 @@ public static class GameSceneNodeHolder
 
         NodeUtils.ForEachNode<PacksackUi>(BackpackUiContainer, node =>
         {
-            
             //If the child node is not visible, the traversal continues.
             //如果子节点不可见，则继续遍历。
-            if (!node.Visible) 
+            if (!node.Visible)
                 return false;
             //Until you find a visible node, hide it, and return true, ending the loop.
             //直到找到可见的节点，隐藏该节点，然后返回true，结束遍历。
             node.Hide();
             return true;
-
         });
     }
 }
\ No newline at end of file
diff --git a/scripts/character/CharacterTemplate.cs b/scripts/character/CharacterTemplate.cs
index 3840a01..5886f53 100644
--- a/scripts/character/CharacterTemplate.cs
+++ b/scripts/character/CharacterTemplate.cs
@@ -178,6 +178,7 @@ public partial class CharacterTemplate : CharacterBody2D
     [Export] public string LootListId { get; private set; } = "";
 
     private HealthBar? _healthBar;
+    private Label? _tipLabel;
     private DateTime _lastDamageTime;
 
     /// <summary>
@@ -291,6 +292,7 @@ public partial class CharacterTemplate : CharacterBody2D
         _animatedSprite2D = GetNode<AnimatedSprite2D>("AnimatedSprite2D");
         _pickingArea = GetNode<Area2D>("Area2DPickingArea");
         _damageNumber = GetNode<Marker2D>("DamageNumber") as DamageNumberNodeSpawn;
+        _tipLabel = GetNodeOrNull<Label>("TipLabel");
         if (_pickingArea != null)
         {
             //If true, the zone will detect objects or areas entering and leaving the zone.
@@ -307,6 +309,52 @@ public partial class CharacterTemplate : CharacterBody2D
         //角色不能穿过墙壁和地板
         SetCollisionMaskValue(Config.LayerNumber.Wall, true);
         SetCollisionMaskValue(Config.LayerNumber.Floor, true);
+        InputPickable = true;
+    }
+
+    public override void _ExitTree()
+    {
+        base._ExitTree();
+        if (GameSceneNodeHolder.TemporaryTargetNode == this)
+        {
+            GameSceneNodeHolder.TemporaryTargetNode = null;
+        }
+    }
+
+
+    private bool _mouseEntered;
+
+    public override void _InputEvent(Viewport viewport, InputEvent @event, int shapeIdx)
+    {
+        if (!_mouseEntered)
+        {
+            return;
+        }
+    }
+
+    public override void _MouseEnter()
+    {
+        _mouseEntered = true;
+        GameSceneNodeHolder.TemporaryTargetNode = this;
+        if (_tipLabel != null)
+        {
+            _tipLabel.Visible = true;
+            _tipLabel.Text = CharacterName;
+            //Vertical Centering Tip
+            //垂直居中提示
+            var oldPosition = _tipLabel.Position;
+            oldPosition.X = -_tipLabel.Size.X / 2;
+            _tipLabel.Position = oldPosition;
+        }
+    }
+
+    public override void _MouseExit()
+    {
+        _mouseEntered = false;
+        if (_tipLabel != null)
+        {
+            _tipLabel.Visible = false;
+        }
     }
 
     /// <summary>
diff --git a/scripts/projectile/Projectile.cs b/scripts/projectile/Projectile.cs
index 4acb566..62bfe0a 100644
--- a/scripts/projectile/Projectile.cs
+++ b/scripts/projectile/Projectile.cs
@@ -67,11 +67,17 @@ public partial class Projectile : CharacterBody2D
     /// </summary>
     [Export] private bool _enableTracking;
 
+    /// <summary>
+    /// <para>The target dies and destroys the projectile at the same time</para>
+    /// <para>在目标死亡后销毁抛射体</para>
+    /// </summary>
+    [Export]private bool _targetDiesDestroyProjectile;
+
     /// <summary>
     /// <para>The target</para>
     /// <para>设置目标</para>
     /// </summary>
-    private Node2D? Target { get; set; }
+    public Node2D? TargetNode { get; set; }
 
     private List<IProjectileDecorator>? _projectileDecorators;
 
@@ -100,6 +106,19 @@ public partial class Projectile : CharacterBody2D
         //Platform collision layer is not allowed to collide
         //平台碰撞层不可碰撞
         SetCollisionMaskValue(Config.LayerNumber.Platform, false);
+        if (TargetNode != null)
+        {
+            TargetNode.TreeExiting += () =>
+            {
+                //Clear the trace when the target is destroyed.
+                //在目标被销毁的时候清空跟踪。
+                TargetNode = null;
+                if (_targetDiesDestroyProjectile)
+                {
+                    OnTimeOut();
+                }
+            };
+        }
     }
 
     /// <summary>
@@ -290,13 +309,13 @@ public partial class Projectile : CharacterBody2D
         {
             //No collision.
             //没有撞到任何东西。
-            if (_enableTracking && Target != null)
+            if (_enableTracking && TargetNode != 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;
+                var desiredVelocity = GlobalPosition.DirectionTo(TargetNode.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);
diff --git a/scripts/weapon/ProjectileWeapon.cs b/scripts/weapon/ProjectileWeapon.cs
index 69a760a..0a9c9d1 100644
--- a/scripts/weapon/ProjectileWeapon.cs
+++ b/scripts/weapon/ProjectileWeapon.cs
@@ -169,6 +169,7 @@ public partial class ProjectileWeapon : WeaponTemplate
 
             NodeUtils.CallDeferredAddChild(GameSceneNodeHolder.ProjectileContainer, projectile);
             projectile.Owner = owner;
+            projectile.TargetNode = GameSceneNodeHolder.TemporaryTargetNode;
             projectile.Velocity =
                 (_marker2D.GlobalPosition.DirectionTo(enemyGlobalPosition) * projectile.Speed)
                 .Rotated(GetRandomAngle());