added dialogue manager and radar

Assets/Scripts/DialogueNPC.cs

@@ -0,0 +1,135 @@
+using UnityEngine;
+
+/// <summary>
+/// Attach this to any world object (NPC, terminal, sign, corpse, etc.)
+/// to make it interactable. The player presses E when looking at it
+/// from within interactRange to start the dialogue.
+///
+/// The component draws a small world-space "[E]" prompt via OnGUI
+/// when the player is close enough and looking at the object.
+/// </summary>
+public class DialogueNPC : MonoBehaviour
+{
+    [Header("Dialogue")]
+    public DialogueLine[] lines = new DialogueLine[]
+    {
+        new DialogueLine { speakerName = "STRANGER", pages = new[] { "Hey." } }
+    };
+
+    [Header("Interaction")]
+    [Tooltip("Maximum distance from which the player can interact.")]
+    public float interactRange = 3.5f;
+    [Tooltip("Maximum angle (degrees) between player forward and direction to this object.")]
+    public float interactAngle = 45f;
+    [Tooltip("Layer mask used for the line-of-sight raycast.")]
+    public LayerMask occlusionMask = ~0;
+
+    [Header("Prompt Style")]
+    public string promptText    = "[E] Talk";
+    public Color  colPrompt     = new Color(0.20f, 0.95f, 0.40f, 1f);
+    public Color  colPromptBg   = new Color(0f, 0f, 0f, 0.70f);
+
+    // ── Private ──────────────────────────────────────────────────────
+    private Transform   _playerTransform;
+    private Camera      _playerCamera;
+    private bool        _promptVisible;
+    private Texture2D   _white;
+
+    // ─────────────────────────────────────────────────────────────────
+    void Start()
+    {
+        _white = Texture2D.whiteTexture;
+
+        // Find the player by component
+        var player = FindObjectOfType<FirstPersonController>();
+        if (player != null)
+        {
+            _playerTransform = player.transform;
+            _playerCamera    = player.GetComponentInChildren<Camera>();
+        }
+        else
+        {
+            Debug.LogWarning($"[DialogueNPC] '{name}': Could not find FirstPersonController in scene.");
+        }
+    }
+
+    void Update()
+    {
+        if (_playerTransform == null || DialogueManager.Instance == null) return;
+        if (DialogueManager.Instance.IsOpen) { _promptVisible = false; return; }
+
+        _promptVisible = CanInteract();
+
+        if (_promptVisible && Input.GetKeyDown(KeyCode.E))
+            DialogueManager.Instance.StartDialogue(lines);
+    }
+
+    // ─────────────────────────────────────────────────────────────────
+    bool CanInteract()
+    {
+        if (_playerTransform == null || _playerCamera == null) return false;
+
+        // Distance check
+        float dist = Vector3.Distance(_playerTransform.position, transform.position);
+        if (dist > interactRange) return false;
+
+        // Angle check — is the player roughly facing this object?
+        Vector3 dir = (transform.position - _playerCamera.transform.position).normalized;
+        float   dot = Vector3.Dot(_playerCamera.transform.forward, dir);
+        if (dot < Mathf.Cos(interactAngle * Mathf.Deg2Rad)) return false;
+
+        // Line-of-sight (optional — fire a ray toward us)
+        if (Physics.Raycast(_playerCamera.transform.position, dir, out RaycastHit hit, interactRange, occlusionMask))
+        {
+            // Allow if the hit object is us or a child of us
+            if (!hit.transform.IsChildOf(transform) && hit.transform != transform)
+                return false;
+        }
+
+        return true;
+    }
+
+    // ─────────────────────────────────────────────────────────────────
+    void OnGUI()
+    {
+        if (!_promptVisible || _playerCamera == null) return;
+
+        // Project to screen
+        Vector3 worldPos  = transform.position + Vector3.up * 0.5f; // slightly above pivot
+        Vector3 screenPos = _playerCamera.WorldToScreenPoint(worldPos);
+
+        if (screenPos.z <= 0f) return; // behind camera
+
+        // Flip Y (GUI vs screen coords)
+        float sx = screenPos.x;
+        float sy = Screen.height - screenPos.y;
+
+        GUIStyle style = new GUIStyle();
+        style.fontSize  = 13;
+        style.fontStyle = FontStyle.Bold;
+        style.normal.textColor = colPrompt;
+        style.alignment = TextAnchor.MiddleCenter;
+
+        Vector2 size   = style.CalcSize(new GUIContent(promptText));
+        float   padX   = 8f;
+        float   padY   = 4f;
+        float   bgW    = size.x + padX * 2f;
+        float   bgH    = size.y + padY * 2f;
+        Rect    bgRect = new Rect(sx - bgW * 0.5f, sy - bgH * 0.5f, bgW, bgH);
+        Rect    txRect = new Rect(sx - size.x * 0.5f, sy - size.y * 0.5f, size.x, size.y);
+
+        // Background
+        Color prev = GUI.color;
+        GUI.color = colPromptBg;
+        GUI.DrawTexture(bgRect, _white);
+        GUI.color = prev;
+
+        GUI.Label(txRect, promptText, style);
+    }
+
+    void OnDrawGizmosSelected()
+    {
+        Gizmos.color = new Color(0f, 1f, 0.4f, 0.25f);
+        Gizmos.DrawWireSphere(transform.position, interactRange);
+    }
+}