Change affinity

src/items/throwable/PalletteSwap.gdshader

@@ -0,0 +1,78 @@
+// Color range swap shader for Godot 4; Sprite3D version by Sithoid
+// Based on 2D shader by nonunknown https://godotshaders.com/shader/color-range-swap/
+// 3d lifehacks by Anonzs https://www.reddit.com/r/godot/comments/11dklv0/sprite3d_shader/
+// Billboard projection by mrdunk https://ask.godotengine.org/152606/how-to-do-i-make-a-shader-a-billboard-face-the-player
+
+shader_type spatial;
+render_mode depth_draw_opaque, depth_prepass_alpha; // Prepass is needed to cast a shadow
+
+// Set this parameter to your actual texture in script, e.g. with
+// material_override.set_shader_parameter("sprite_texture", texture)
+uniform sampler2D sprite_texture : source_color, filter_nearest;
+
+// Hue on a HSV scale (0 to 1) that will be keyed out. Defaults are set to key out bright cyan
+uniform float _min = 0.49;
+uniform float _max = 0.5;
+// Target color (RGBA) that will appear instead of the mask (it will respect brightness)
+uniform vec4 color : source_color = vec4(0.59, 0.12, 0.32, 1.0); // Dark pink by default
+
+uniform bool billboard = false; // Toggle billboard mode (set this in script)
+
+vec3 rgb2hsv(vec3 c) {
+	vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+	vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+	vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+	float d = q.x - min(q.w, q.y);
+	float e = 1.0e-10;
+	return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
+}
+
+// All components are in the range [0…1], including hue.
+vec3 hsv2rgb(vec3 c) {
+	vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+	vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+	return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+}
+
+// ===== nonunknown got those from: https://gamedev.stackexchange.com/a/75928
+vec4 to_gray(vec4 tex) {
+	float avg = (tex.r + tex.g + tex.b) / 3.0;
+	return vec4(vec3(avg),tex.a);
+}
+
+vec4 to_color(vec4 gray, vec4 col) {
+	return gray * col;
+}
+// ===== end
+
+// == Billboard projection by mrdunk
+
+void vertex() {
+	if (billboard) {
+		mat4 modified_model_view = VIEW_MATRIX * mat4(
+			INV_VIEW_MATRIX[0],
+			INV_VIEW_MATRIX[1],
+			INV_VIEW_MATRIX[2],
+			MODEL_MATRIX[3]
+		);
+		MODELVIEW_MATRIX = modified_model_view;
+	}
+}
+
+// end ===
+
+void fragment() {
+	vec4 tex = texture(sprite_texture, UV);
+	vec3 hsv = rgb2hsv(tex.rgb);
+	
+	// the .r here represents HUE, .g is SATURATION, .b is LUMINANCE
+	if (hsv.r >= _min && hsv.r <= _max) {
+		tex = to_gray(tex);
+		tex = to_color(tex, color);
+	}
+	// To replace multiple colors, just copy this "if" statement
+	// and repeat it with different variables (such as _min1, _min2 and color2)
+	ALBEDO = tex.rgb;
+	ALPHA = tex.a;
+}

src/items/throwable/PalletteSwap.gdshader.uid

@@ -0,0 +1 @@
+uid://b1n357imav0y6

src/items/throwable/ThrowableItem.cs

@@ -3,16 +3,17 @@ using Chickensoft.Introspection;
 using GameJamDungeon;
 using Godot;
 using System;
+using System.ComponentModel;
 
 [Meta(typeof(IAutoNode))]
 public partial class ThrowableItem : Node3D, IUsableItem
 {
   public override void _Notification(int what) => this.Notify(what);
 
-  [Dependency] public IGameRepo GameRepo => this.DependOn<IGameRepo>();
-
   [Dependency] public IGame Game => this.DependOn<IGame>();
 
+  [Dependency] public IGameRepo GameRepo => this.DependOn<IGameRepo>();
+
   public InventoryItemStats Info => ThrowableItemInfo;
 
   public int Count { get; }
@@ -26,10 +27,23 @@ public partial class ThrowableItem : Node3D, IUsableItem
 
   [Node] public Area3D Pickup { get; set; } = default!;
 
+  private ThrowableItemTag[] _affinityTypes;
+
+  private int _affinityIndex = 0;
+
   public void OnResolved()
   {
     Sprite.Texture = ThrowableItemInfo.Texture;
     Pickup.BodyEntered += OnEntered;
+    _affinityTypes =
+      [
+        ThrowableItemTag.InflictBaseDamage,
+        ThrowableItemTag.InflictHydricDamage,
+        ThrowableItemTag.InflictIgneousDamage,
+        ThrowableItemTag.InflictTelluricDamage,
+        ThrowableItemTag.InflictAeolicDamage,
+        ThrowableItemTag.InflictFerrumDamage
+      ];
   }
 
   public void Use()
@@ -38,6 +52,24 @@ public partial class ThrowableItem : Node3D, IUsableItem
       Game.HealHP(ThrowableItemInfo.HealHPAmount);
     if (ThrowableItemInfo.HealVTAmount > 0)
       Game.HealVT(ThrowableItemInfo.HealVTAmount);
+
+    if (ThrowableItemInfo.UsableItemTags.Contains(UsableItemTag.DoubleEXP))
+      Game.DoubleEXP(TimeSpan.FromSeconds(30));
+
+    if (ThrowableItemInfo.ThrowableItemTags.Contains(ThrowableItemTag.CanChangeAffinity))
+      ChangeAffinity();
+  }
+
+  private void ChangeAffinity()
+  {
+    ThrowableItemInfo.ThrowableItemTags.Remove(_affinityTypes[_affinityIndex]);
+    _affinityIndex = (_affinityIndex + 1) % (_affinityTypes.Length);
+    ThrowableItemInfo.ThrowableItemTags.Add(_affinityTypes[_affinityIndex]);
+
+    // TODO: Make this an inventory animation to cycle through elements.
+    ThrowableItemInfo.Description =
+      $"{GetDescription(_affinityTypes[_affinityIndex])} when thrown." +
+      $"{System.Environment.NewLine}Use item to change Affinity.";
   }
 
   public void OnEntered(Node3D body)
@@ -46,4 +78,19 @@ public partial class ThrowableItem : Node3D, IUsableItem
     if (isAdded)
       QueueFree();
   }
+
+  private static string GetDescription(ThrowableItemTag enumValue)
+  {
+    var field = enumValue.GetType().GetField(enumValue.ToString());
+    if (field == null)
+      return enumValue.ToString();
+
+    var attributes = field.GetCustomAttributes(typeof(DescriptionAttribute), false);
+    if (Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) is DescriptionAttribute attribute)
+    {
+      return attribute.Description;
+    }
+
+    return enumValue.ToString();
+  }
 }

src/items/throwable/ThrowableItem.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=3 format=3 uid="uid://1fl6s352e2ej"]
 
-[ext_resource type="Script" path="res://src/items/throwable/ThrowableItem.cs" id="1_nac2l"]
+[ext_resource type="Script" uid="uid://dj28ol2cpeiwm" path="res://src/items/throwable/ThrowableItem.cs" id="1_nac2l"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_03cqg"]
 size = Vector3(0.778381, 0.929947, 0.731567)
@@ -20,6 +20,7 @@ shape = SubResource("BoxShape3D_03cqg")
 
 [node name="Sprite" type="Sprite3D" parent="Pickup"]
 unique_name_in_owner = true
+transform = Transform3D(0.999973, 0.00489444, -0.00548299, -0.00488109, 0.999985, 0.00244357, 0.00549488, -0.00241672, 0.999982, 0, 0, 0)
 pixel_size = 0.0005
 billboard = 2
 shaded = true

src/items/throwable/ThrowableItemStats.cs

@@ -7,4 +7,7 @@ public partial class ThrowableItemStats : InventoryItemStats
 {
   [Export]
   public Godot.Collections.Array<ThrowableItemTag> ThrowableItemTags { get; set; } = new Godot.Collections.Array<ThrowableItemTag>();
+
+  [Export]
+  public Godot.Collections.Array<UsableItemTag> UsableItemTags { get; set; } = new Godot.Collections.Array<UsableItemTag>();
 }

src/items/throwable/ThrowableItemTag.cs

@@ -1,11 +1,21 @@
-public enum ThrowableItemTag
+using System.ComponentModel;
+
+public enum ThrowableItemTag
 {
+  [Description("Inflicts basic damage")]
+  InflictBaseDamage,
+  [Description("Inflicts Telluric damage")]
   InflictTelluricDamage,
+  [Description("Inflicts Aeolic damage")]
   InflictAeolicDamage,
+  [Description("Inflicts Hydric damage")]
   InflictHydricDamage,
+  [Description("Inflicts Igneous damage")]
   InflictIgneousDamage,
+  [Description("Inflicts Ferrum damage")]
   InflictFerrumDamage,
   LowerTargetTo1HP,
+  CanChangeAffinity
 }
 
 public enum UsableItemTag

src/items/throwable/resources/GeomanticDice.tres

@@ -1,13 +1,15 @@
 [gd_resource type="Resource" script_class="ThrowableItemStats" load_steps=3 format=3 uid="uid://bph8c6by4s047"]
 
-[ext_resource type="Script" path="res://src/items/throwable/ThrowableItemStats.cs" id="1_ewck5"]
+[ext_resource type="Script" uid="uid://d3wlunkcuv2w2" path="res://src/items/throwable/ThrowableItemStats.cs" id="1_ewck5"]
 [ext_resource type="Texture2D" uid="uid://mi70lolgtf3n" path="res://src/items/throwable/textures/GEOMANCER-DICE.png" id="1_jhits"]
 
 [resource]
 script = ExtResource("1_ewck5")
-ThrowableItemTags = []
+ThrowableItemTags = Array[int]([7])
+UsableItemTags = Array[int]([])
 Name = "Geomantic Dice"
-Description = "Inflicts Affinity damage when thrown."
+Description = "Inflicts base damage when thrown.
+Use item to change Affinity."
 Texture = ExtResource("1_jhits")
 SpawnRate = 0.1
 ThrowSpeed = 20.0

src/items/throwable/resources/SpellSignKnowledge.tres

@@ -1,13 +1,17 @@
 [gd_resource type="Resource" script_class="ThrowableItemStats" load_steps=3 format=3 uid="uid://qqg0gdcb8fwg"]
 
 [ext_resource type="Texture2D" uid="uid://dhfn51smm818x" path="res://src/items/throwable/textures/spell sign - luck.PNG" id="1_3605p"]
-[ext_resource type="Script" path="res://src/items/throwable/ThrowableItemStats.cs" id="1_s3pq7"]
+[ext_resource type="Script" uid="uid://d3wlunkcuv2w2" path="res://src/items/throwable/ThrowableItemStats.cs" id="1_s3pq7"]
 
 [resource]
 script = ExtResource("1_s3pq7")
-Damage = 0
-ThrowableItemTags = []
+ThrowableItemTags = Array[int]([])
+UsableItemTags = Array[int]([0])
 Name = "Spell Sign: Knowledge"
 Description = "Doubles experience points earned. Effect is temporary."
 Texture = ExtResource("1_3605p")
 SpawnRate = 0.1
+ThrowSpeed = 12.0
+HealHPAmount = 0
+HealVTAmount = 0
+ThrowDamage = 5