implement character staggering; fix #34

Characters/Character.cs

@@ -26,6 +26,9 @@ public partial class Character : CharacterBody2D, IFaction
         }
     }
 
+    [Export]
+    public CharacterStats Stats { get; private set; }
+
     [Signal]
     public delegate void HealthChangedEventHandler(Events.HealthChangedArgs args);
 
@@ -105,12 +108,19 @@ public partial class Character : CharacterBody2D, IFaction
 
     public override void _Ready()
     {
-        // TODO: 80+ char line
         MovementAnimation = GetNode<AnimationPlayer>("Animations/Movement");
         HurtAnimation = GetNode<AnimationPlayer>("Animations/Hurt");
         StunAnimation = GetNode<AnimationPlayer>("Animations/Stun");
         AttackAnimation = GetNode<AnimationPlayer>("Animations/Attack");
 
+        if (Stats is not null)
+        {
+            Stats.Stagger += (double time) =>
+            {
+                Stun(time);
+            };
+        }
+
         Hurtbox.ReceivedDamage += OnReceivedDamage;
     }
 
@@ -207,7 +217,7 @@ public partial class Character : CharacterBody2D, IFaction
     /// <paramref name="time"/> is less than the <c>Character</c>'s current
     /// stun time left, it will have no effect.
     /// </summary>
-    public virtual void Stun(float time)
+    public virtual void Stun(double time)
     {
         StunTime = Mathf.Max(time, StunTime);
     }
@@ -328,10 +338,17 @@ public partial class Character : CharacterBody2D, IFaction
             return;
         }
 
+        // update stats
         float oldHealth = Health;
         damage = ReceiveDamage(damage, inflictor, knockback, knockbackDir);
         Health -= damage;
 
+        if (Stats is not null)
+        {
+            Stats.AddStaggerDamage(damage);
+        }
+
+        // effects
         var hurtParticles = GetNode<GpuParticles2D>("Effects/HurtParticles");
         if (hurtParticles is not null)
         {

Characters/DocCenturion.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=36 format=3 uid="uid://dhamcei7tfta8"]
+[gd_scene load_steps=38 format=3 uid="uid://dhamcei7tfta8"]
 
 [ext_resource type="Shader" path="res://Shaders/Flash.gdshader" id="1_msit5"]
 [ext_resource type="Script" path="res://Characters/Enemy.cs" id="2_pkari"]
@@ -8,7 +8,9 @@
 [ext_resource type="Script" path="res://State/Thinker/ThinkerStateMachine.cs" id="6_6516i"]
 [ext_resource type="Script" path="res://State/Thinker/CenturionAttackState.cs" id="7_n2slg"]
 [ext_resource type="Script" path="res://State/Thinker/IdleState.cs" id="8_5neew"]
+[ext_resource type="Script" path="res://Utils/CharacterStats.cs" id="9_bxrs2"]
 [ext_resource type="Script" path="res://Utils/AnimationManager.cs" id="9_fgnr2"]
+[ext_resource type="Script" path="res://Utils/Values/DoubleValue.cs" id="10_b38kt"]
 [ext_resource type="AnimationLibrary" uid="uid://xs6g84fkepjr" path="res://Assets/Animations/npc_hurt.res" id="10_bbwbd"]
 [ext_resource type="AnimationLibrary" uid="uid://f1aqhnxndybx" path="res://Assets/Animations/npc_stun.res" id="11_a0f8a"]
 [ext_resource type="Material" uid="uid://bat28samf7ukd" path="res://Assets/Sprites/Particles/NPCDamageProcessMaterial.tres" id="11_p7yev"]
@@ -133,7 +135,7 @@ size = Vector2(12, 8)
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_1gjgc"]
 size = Vector2(12, 16)
 
-[node name="Centurion" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
+[node name="Centurion" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Stats", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
 y_sort_enabled = true
 texture_filter = 3
 material = SubResource("ShaderMaterial_2fq6c")
@@ -144,12 +146,19 @@ DefaultSelectedItem = NodePath("Inventory/Sword")
 ThinkerStateMachine = NodePath("ThinkerStateMachine")
 Speed = 40.0
 Mass = 2.0
+Stats = NodePath("Stats")
 Health = 80.0
 Sprite = NodePath("Sprites/Node2D/Character")
 Inventory = NodePath("Inventory")
 StateMachine = NodePath("StateMachine")
 Hurtbox = NodePath("Hurtbox")
 
+[node name="Stats" type="Node" parent="."]
+script = ExtResource("9_bxrs2")
+
+[node name="StaggerDamage" type="Node" parent="Stats"]
+script = ExtResource("10_b38kt")
+
 [node name="StateMachine" type="Node" parent="." node_paths=PackedStringArray("InitialState", "Character")]
 script = ExtResource("3_2dbgx")
 InitialState = NodePath("Idle")

Characters/DocLegionary.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=43 format=3 uid="uid://cdj50hb84aujp"]
+[gd_scene load_steps=45 format=3 uid="uid://cdj50hb84aujp"]
 
 [ext_resource type="Shader" path="res://Shaders/Flash.gdshader" id="1_hvgeb"]
 [ext_resource type="Script" path="res://Characters/Enemy.cs" id="2_h5w5n"]
@@ -12,7 +12,9 @@
 [ext_resource type="Script" path="res://Utils/AnimationManager.cs" id="9_ssmee"]
 [ext_resource type="Script" path="res://State/Thinker/PursueState.cs" id="9_u7gxx"]
 [ext_resource type="Animation" uid="uid://8e8r3y1imvsx" path="res://Assets/Animations/stun.res" id="10_oplmj"]
+[ext_resource type="Script" path="res://Utils/CharacterStats.cs" id="11_6o2tx"]
 [ext_resource type="Material" uid="uid://bat28samf7ukd" path="res://Assets/Sprites/Particles/NPCDamageProcessMaterial.tres" id="11_qcw5x"]
+[ext_resource type="Script" path="res://Utils/Values/DoubleValue.cs" id="12_ds5eh"]
 [ext_resource type="Texture2D" uid="uid://bd8l8kafb42dt" path="res://Assets/Sprites/Particles/circle.png" id="12_rlelw"]
 [ext_resource type="Material" uid="uid://2tsvsp45elru" path="res://Assets/Sprites/Particles/NPCDeathParticles.tres" id="13_kgmsk"]
 [ext_resource type="Texture2D" uid="uid://c1a7lvb4uuwfy" path="res://Assets/Sprites/Particles/circle-16.png" id="14_88n3w"]
@@ -272,7 +274,7 @@ size = Vector2(8, 8)
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_1gjgc"]
 size = Vector2(12, 16)
 
-[node name="Legionary" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
+[node name="Legionary" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Stats", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
 y_sort_enabled = true
 texture_filter = 3
 material = SubResource("ShaderMaterial_2fq6c")
@@ -282,6 +284,7 @@ script = ExtResource("2_h5w5n")
 DefaultSelectedItem = NodePath("Inventory/DocLance")
 ThinkerStateMachine = NodePath("ThinkerStateMachine")
 Speed = 56.0
+Stats = NodePath("Stats")
 Health = 130.0
 Sprite = NodePath("Sprites/Node2D/Character")
 Inventory = NodePath("Inventory")
@@ -289,6 +292,12 @@ StateMachine = NodePath("StateMachine")
 Hurtbox = NodePath("Hurtbox")
 metadata/_edit_vertical_guides_ = []
 
+[node name="Stats" type="Node" parent="."]
+script = ExtResource("11_6o2tx")
+
+[node name="StaggerDamage" type="Node" parent="Stats"]
+script = ExtResource("12_ds5eh")
+
 [node name="StateMachine" type="Node" parent="." node_paths=PackedStringArray("InitialState", "Character")]
 script = ExtResource("3_04p3j")
 InitialState = NodePath("Idle")

Characters/Player.cs

@@ -43,7 +43,7 @@ public sealed partial class Player : Character
     public AnimationTree AnimationTree { get; private set; }
 
     [Export]
-    public PlayerStats Stats { get; private set; }
+    public new PlayerStats Stats { get; private set; }
 
     public InteractionRay InteractionRay { get; private set; }
 
@@ -57,10 +57,10 @@ public sealed partial class Player : Character
 
         _targetTracer = GetNode<TargetTracer>("%TargetTracer");
 
-        Stats = GetNode<PlayerStats>("Stats");
-
         base._Ready();
 
+        Stats = base.Stats as PlayerStats;
+
         Inventory.UsedItem += (Items.Item item) =>
         {
             if (item is Items.Weapons.Sword)
@@ -133,7 +133,7 @@ public sealed partial class Player : Character
         base.ModifyVelocity();
     }
 
-    public override void Stun(float time)
+    public override void Stun(double time)
     {
         base.Stun(time);
         Camera.Shake(2, 0.8f);

Characters/Player.tscn

@@ -576,7 +576,7 @@ size = Vector2(8, 8)
 closed = false
 polygon = PackedVector2Array(-3, 0, 2, 0)
 
-[node name="Player" type="CharacterBody2D" node_paths=PackedStringArray("Camera", "DirectionMarker", "Stats", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
+[node name="Player" type="CharacterBody2D" node_paths=PackedStringArray("Camera", "DirectionMarker", "Stats", "Stats", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
 y_sort_enabled = true
 texture_filter = 3
 material = SubResource("ShaderMaterial_h78y7")
@@ -587,6 +587,7 @@ Camera = NodePath("Camera2D")
 DirectionMarker = NodePath("Direction2D")
 Stats = NodePath("Stats")
 Speed = 80.0
+Stats = NodePath("Stats")
 HandTexture = ExtResource("3_3dqh7")
 Sprite = NodePath("Sprites/Node2D/Character")
 Inventory = NodePath("Inventory")
@@ -603,6 +604,9 @@ script = ExtResource("5_txl0r")
 [node name="Level" type="Node" parent="Stats"]
 script = ExtResource("6_sunc5")
 
+[node name="StaggerDamage" type="Node" parent="Stats"]
+script = ExtResource("5_txl0r")
+
 [node name="StateMachine" type="Node" parent="." node_paths=PackedStringArray("InitialState", "Character")]
 script = ExtResource("5_rgckv")
 InitialState = NodePath("Idle")

Characters/Weeb.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=38 format=3 uid="uid://glh1bi8fq0y3"]
+[gd_scene load_steps=40 format=3 uid="uid://glh1bi8fq0y3"]
 
 [ext_resource type="Script" path="res://Characters/NPC.cs" id="1_7fqw6"]
 [ext_resource type="Shader" path="res://Shaders/Flash.gdshader" id="1_alo0e"]
@@ -18,6 +18,8 @@
 [ext_resource type="AnimationLibrary" uid="uid://f1aqhnxndybx" path="res://Assets/Animations/npc_stun.res" id="9_bpu34"]
 [ext_resource type="Texture2D" uid="uid://bd8l8kafb42dt" path="res://Assets/Sprites/Particles/circle.png" id="9_g45p5"]
 [ext_resource type="Material" uid="uid://2tsvsp45elru" path="res://Assets/Sprites/Particles/NPCDeathParticles.tres" id="10_8f2hb"]
+[ext_resource type="Script" path="res://Utils/CharacterStats.cs" id="10_r68bb"]
+[ext_resource type="Script" path="res://Utils/Values/DoubleValue.cs" id="11_hda5d"]
 [ext_resource type="PackedScene" uid="uid://cjgxyhgcyvsv7" path="res://BoundingBoxes/Hurtbox.tscn" id="11_sj7u0"]
 [ext_resource type="Texture2D" uid="uid://c1a7lvb4uuwfy" path="res://Assets/Sprites/Particles/circle-16.png" id="11_wp6i2"]
 [ext_resource type="AudioStream" uid="uid://k6kpdj1kv0jg" path="res://Assets/Sounds/splat.ogg" id="12_iwry7"]
@@ -160,13 +162,14 @@ size = Vector2(10, 8)
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_kyos5"]
 size = Vector2(12, 16)
 
-[node name="Weeb" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
+[node name="Weeb" type="CharacterBody2D" node_paths=PackedStringArray("DefaultSelectedItem", "ThinkerStateMachine", "Stats", "Sprite", "Inventory", "StateMachine", "Hurtbox")]
 material = SubResource("ShaderMaterial_etlnr")
 collision_layer = 6
 collision_mask = 17
 script = ExtResource("1_7fqw6")
 DefaultSelectedItem = NodePath("Inventory/Sword")
 ThinkerStateMachine = NodePath("ThinkerStateMachine")
+Stats = NodePath("Stats")
 Sprite = NodePath("Sprites/Sprite2D")
 Inventory = NodePath("Inventory")
 StateMachine = NodePath("StateMachine")
@@ -222,6 +225,12 @@ NPC = NodePath("../..")
 target_desired_distance = 16.0
 debug_enabled = true
 
+[node name="Stats" type="Node" parent="."]
+script = ExtResource("10_r68bb")
+
+[node name="StaggerDamage" type="Node" parent="Stats"]
+script = ExtResource("11_hda5d")
+
 [node name="Animations" type="Node" parent="."]
 script = ExtResource("8_dh32x")
 

Utils/CharacterStats.cs

@@ -0,0 +1,69 @@
+using Godot;
+
+namespace SupaLidlGame.Utils;
+
+public partial class CharacterStats : Node
+{
+    public DoubleValue StaggerDamage { get; set; }
+
+    [Export]
+    public double StaggerCoefficient { get; set; } = 0.5;
+
+    [Export]
+    public double StaggerDecayVelocity { get; set; } = 5;
+
+    [Export]
+    public double MaxStagger { get; set; } = 25;
+
+    [Signal]
+    public delegate void StaggerEventHandler(double time);
+
+    public bool ShouldStagger => StaggerDamage.Value >= MaxStagger;
+
+    protected bool _shouldDecayStagger;
+
+    protected Timer _staggerDecayTimer;
+
+    public override void _Ready()
+    {
+        StaggerDamage = GetNode<DoubleValue>("StaggerDamage");
+
+        if (StaggerDamage is null)
+        {
+            StaggerDamage = new DoubleValue();
+            AddChild(StaggerDamage);
+        }
+
+        _staggerDecayTimer = new Timer();
+        _staggerDecayTimer.Timeout += () => _shouldDecayStagger = true;
+        _staggerDecayTimer.Stop();
+        AddChild(_staggerDecayTimer);
+    }
+
+    public void AddStaggerDamage(float damage)
+    {
+        StaggerDamage.Value += damage * StaggerCoefficient;
+        GD.Print(StaggerDamage.Value);
+        if (StaggerDamage.Value >= MaxStagger)
+        {
+            GD.Print(StaggerDamage.Value + " >= " + MaxStagger);
+            EmitSignal(SignalName.Stagger, 1);
+        }
+        else
+        {
+            GD.Print(StaggerDamage.Value + " < " + MaxStagger);
+            _shouldDecayStagger = false;
+            _staggerDecayTimer.Stop();
+            _staggerDecayTimer.Start(1);
+        }
+    }
+
+    public override void _Process(double delta)
+    {
+        if (_shouldDecayStagger)
+        {
+            StaggerDamage.Value = Mathf.MoveToward(
+                StaggerDamage.Value, 0, StaggerDecayVelocity * delta);
+        }
+    }
+}

Utils/PlayerStats.cs

@@ -3,7 +3,7 @@ using SupaLidlGame.Events;
 
 namespace SupaLidlGame.Utils;
 
-public partial class PlayerStats : Node
+public partial class PlayerStats : CharacterStats
 {
     public const int MAX_XP_PER_LEVEL = 4;
 
@@ -21,9 +21,23 @@ public partial class PlayerStats : Node
 
     public override void _Ready()
     {
+        base._Ready();
+
         XP = GetNode<DoubleValue>("XP");
         Level = GetNode<IntValue>("Level");
 
+        if (XP is null)
+        {
+            XP = new DoubleValue();
+            AddChild(XP);
+        }
+
+        if (Level is null)
+        {
+            Level = new IntValue();
+            AddChild(Level);
+        }
+
         _xpDecayTimer = new Timer();
         _xpDecayTimer.Timeout += () => _shouldDecayXP = true;
         _xpDecayTimer.Stop();
@@ -67,6 +81,8 @@ public partial class PlayerStats : Node
 
     public override void _Process(double delta)
     {
+        base._Process(delta);
+
         if (_shouldDecayXP)
         {
             XP.Value = Mathf.MoveToward(XP.Value, 1, XPDecayVelocity * delta);