From a590aa92095265616f34f6e7edba54bedac80a7d Mon Sep 17 00:00:00 2001
From: HumanoidSandvichDispenser <humanoidsandvichdispenser@gmail.com>
Date: Sat, 1 Jun 2024 15:43:46 -0700
Subject: [PATCH] Add Snus Dealer example vendor NPC

---
 Characters/NPC.cs             | 32 ++++++++++++++++++++++++++++++++
 Characters/SnusDealer.tscn    |  8 ++++----
 Dialogue/snus-dealer.dialogue | 24 ++++++++++++------------
 State/Thinker/VendorIdle.cs   | 17 +++++++++++++++++
 4 files changed, 65 insertions(+), 16 deletions(-)
 create mode 100644 State/Thinker/VendorIdle.cs

diff --git a/Characters/NPC.cs b/Characters/NPC.cs
index 2b438e7..a5806a3 100644
--- a/Characters/NPC.cs
+++ b/Characters/NPC.cs
@@ -3,6 +3,7 @@
 using Godot;
 using SupaLidlGame.Extensions;
 using SupaLidlGame.Items;
+using SupaLidlGame.Utils;
 using System;
 
 namespace SupaLidlGame.Characters;
@@ -127,6 +128,37 @@ public partial class NPC : Character
         return bestChar;
     }
 
+    /// <summary>
+    /// Finds the best character whose faction aligns with this character's.
+    /// </summary>
+    public virtual Character FindBestNeutral()
+    {
+        float bestScore = float.MaxValue;
+        Character bestChar = null;
+        // NOTE: this relies on all Characters being under the Entities node
+        foreach (Node node in GetParent().GetChildren())
+        {
+            if (node is Character character)
+            {
+                bool isFriendly = ((IFaction)this).AlignsWith(character);
+                if (isFriendly || character.Health <= 0)
+                {
+                    continue;
+                }
+
+                float score = 0;
+                score -= Position.DistanceTo(character.Position);
+
+                if (score < bestScore)
+                {
+                    bestScore = score;
+                    bestChar = character;
+                }
+            }
+        }
+        return bestChar;
+    }
+
     public override void _Process(double delta)
     {
         ThinkerStateMachine.Process(delta);
diff --git a/Characters/SnusDealer.tscn b/Characters/SnusDealer.tscn
index 625e8ea..569eb06 100644
--- a/Characters/SnusDealer.tscn
+++ b/Characters/SnusDealer.tscn
@@ -4,14 +4,14 @@
 [ext_resource type="Script" path="res://State/Character/CharacterStateMachine.cs" id="2_kynkg"]
 [ext_resource type="Texture2D" uid="uid://bej8thq7ruyty" path="res://Assets/Sprites/Characters/forsen2.png" id="2_s5nik"]
 [ext_resource type="Script" path="res://State/Character/NPCIdleState.cs" id="3_pcrll"]
-[ext_resource type="Script" path="res://State/Thinker/IdleState.cs" id="3_rgc42"]
 [ext_resource type="Script" path="res://State/Thinker/ThinkerStateMachine.cs" id="4_mo4wj"]
+[ext_resource type="Script" path="res://State/Thinker/VendorIdle.cs" id="5_oau5d"]
 [ext_resource type="PackedScene" uid="uid://dldnp8eunxj3q" path="res://BoundingBoxes/InteractionTrigger.tscn" id="5_sjs24"]
 [ext_resource type="Script" path="res://Utils/InteractionTriggerDialogue.cs" id="5_yknpw"]
 [ext_resource type="Resource" uid="uid://c4n7vhoxybu70" path="res://Dialogue/snus-dealer.dialogue" id="6_isvnq"]
 [ext_resource type="Script" path="res://Items/Inventory.cs" id="7_vip6b"]
 
-[node name="Character" type="CharacterBody2D" node_paths=PackedStringArray("ThinkerStateMachine", "Sprite", "Inventory", "StateMachine")]
+[node name="SnusDealer" type="CharacterBody2D" node_paths=PackedStringArray("ThinkerStateMachine", "Sprite", "Inventory", "StateMachine")]
 script = ExtResource("1_04gcf")
 ThinkerStateMachine = NodePath("Thinker")
 Sprite = NodePath("Sprites/Sprite")
@@ -32,7 +32,7 @@ script = ExtResource("4_mo4wj")
 InitialState = NodePath("Idle")
 
 [node name="Idle" type="Node" parent="Thinker" node_paths=PackedStringArray("NPC")]
-script = ExtResource("3_rgc42")
+script = ExtResource("5_oau5d")
 NPC = NodePath("../..")
 
 [node name="Animations" type="Node" parent="."]
@@ -64,7 +64,7 @@ position = Vector2(0, -4)
 script = ExtResource("5_yknpw")
 InteractionTrigger = NodePath("InteractionTrigger")
 DialogueResource = ExtResource("6_isvnq")
-DialogueTitle = "shop"
+DialogueTitle = "start"
 
 [node name="InteractionTrigger" parent="Interaction" instance=ExtResource("5_sjs24")]
 
diff --git a/Dialogue/snus-dealer.dialogue b/Dialogue/snus-dealer.dialogue
index d70cfe4..8572f45 100644
--- a/Dialogue/snus-dealer.dialogue
+++ b/Dialogue/snus-dealer.dialogue
@@ -1,23 +1,23 @@
 ~ start
 
-Snus Dealer: d
-
-% => test
-% => dont_snus
-
-=> END
-
-~ test
-
-Snus Dealer: asdadsadasd
+Snus Dealer: Hey kid, wanna buy some snus?
+- Alright. => shop
+- No, I don't think so. => END
+- Snus? => dont_snus
 
 => END
 
 ~ dont_snus
 
+Snus Dealer: You know what they say.
 Snus Dealer: If you don't snus...
 Snus Dealer: you lose.
+- Pepepains
+
+=> start
+
+~ shop
+
+do emit("EnterShop", "res://Items/Shops/SnusDealer.tres")
 
 => END
-
-~ shop
\ No newline at end of file
diff --git a/State/Thinker/VendorIdle.cs b/State/Thinker/VendorIdle.cs
new file mode 100644
index 0000000..d0154f6
--- /dev/null
+++ b/State/Thinker/VendorIdle.cs
@@ -0,0 +1,17 @@
+using Godot;
+using GodotUtilities;
+
+namespace SupaLidlGame.State.Thinker;
+
+public partial class VendorIdle : ThinkerState
+{
+    public override ThinkerState Think()
+    {
+        var bestNeutral = NPC.FindBestNeutral();
+        if (bestNeutral is not null)
+        {
+            NPC.Target = bestNeutral.Position - NPC.Position;
+        }
+        return null;
+    }
+}