Add worldbuilder player controls and build HUD tools

Assets/Scripts/Building/BuildTool.cs

@@ -0,0 +1,116 @@
+using System.Collections.Generic;
+using UnityEngine;
+using BlackRoad.Worldbuilder.Environment;
+using BlackRoad.Worldbuilder.Player;
+
+namespace BlackRoad.Worldbuilder.Building
+{
+    /// <summary>
+    /// Lets the player place and remove prefabs on terrain using raycasts.
+    /// Left click: place selected prefab (snapped to grid).
+    /// Right click: remove hit buildable object.
+    /// Number keys 1..N: select prefab.
+    /// </summary>
+    public class BuildTool : MonoBehaviour
+    {
+        [Header("Refs")]
+        [SerializeField] private Camera playerCamera;
+        [SerializeField] private PlayerController playerController;
+        [SerializeField] private float maxPlaceDistance = 80f;
+        [SerializeField] private LayerMask placementMask = ~0;
+
+        [Header("Building")]
+        [SerializeField] private float gridSize = 2f;
+        [SerializeField] private List<GameObject> buildPrefabs = new List<GameObject>();
+
+        [Header("Debug")]
+        [SerializeField] private Color previewColor = new Color(0f, 1f, 0f, 0.4f);
+
+        public int CurrentIndex { get; private set; } = 0;
+        public GameObject CurrentPrefab =>
+            buildPrefabs != null && buildPrefabs.Count > 0 && CurrentIndex >= 0 && CurrentIndex < buildPrefabs.Count
+                ? buildPrefabs[CurrentIndex]
+                : null;
+
+        private Vector3 _lastPreviewPos;
+        private bool _hasPreview;
+
+        private void Awake()
+        {
+            if (playerCamera == null)
+                playerCamera = Camera.main;
+            if (playerController == null)
+                playerController = FindObjectOfType<PlayerController>();
+        }
+
+        private void Update()
+        {
+            HandleSelection();
+            HandlePlacement();
+        }
+
+        private void HandleSelection()
+        {
+            // 1..9 selects prefabs
+            for (int i = 0; i < buildPrefabs.Count && i < 9; i++)
+            {
+                if (Input.GetKeyDown(KeyCode.Alpha1 + i))
+                {
+                    CurrentIndex = i;
+                }
+            }
+        }
+
+        private void HandlePlacement()
+        {
+            if (playerCamera == null || CurrentPrefab == null)
+                return;
+
+            Ray ray = playerCamera.ViewportPointToRay(new Vector3(0.5f, 0.5f, 0f));
+            if (Physics.Raycast(ray, out RaycastHit hit, maxPlaceDistance, placementMask))
+            {
+                Vector3 pos = hit.point;
+
+                // Snap to grid horizontally, keep terrain height
+                pos.x = Mathf.Round(pos.x / gridSize) * gridSize;
+                pos.z = Mathf.Round(pos.z / gridSize) * gridSize;
+
+                _lastPreviewPos = pos;
+                _hasPreview = true;
+
+                // Place
+                if (Input.GetMouseButtonDown(0))
+                {
+                    Instantiate(CurrentPrefab, pos, Quaternion.identity);
+                }
+
+                // Remove
+                if (Input.GetMouseButtonDown(1))
+                {
+                    if (hit.collider != null)
+                    {
+                        // Simple rule: destroy hit object if it has tag "Buildable" or no Rigidbody.
+                        var go = hit.collider.gameObject;
+                        if (go.CompareTag("Buildable") || go.GetComponent<Rigidbody>() == null)
+                        {
+                            Destroy(go);
+                        }
+                    }
+                }
+            }
+            else
+            {
+                _hasPreview = false;
+            }
+        }
+
+        private void OnDrawGizmos()
+        {
+            if (!_hasPreview || CurrentPrefab == null) return;
+
+            Gizmos.color = previewColor;
+            Vector3 size = Vector3.one * gridSize;
+            Gizmos.DrawCube(_lastPreviewPos, size);
+        }
+    }
+}

Assets/Scripts/Player/PlayerController.cs

@@ -0,0 +1,135 @@
+using UnityEngine;
+
+namespace BlackRoad.Worldbuilder.Player
+{
+    /// <summary>
+    /// First-person controller with walk/run/jump and a fly-mode toggle.
+    /// Attach to a GameObject with CharacterController and a child Camera.
+    /// </summary>
+    [RequireComponent(typeof(CharacterController))]
+    public class PlayerController : MonoBehaviour
+    {
+        [Header("View")]
+        [SerializeField] private Camera playerCamera;
+        [SerializeField] private float mouseSensitivity = 2f;
+        [SerializeField] private float minPitch = -80f;
+        [SerializeField] private float maxPitch = 80f;
+
+        [Header("Movement")]
+        [SerializeField] private float walkSpeed = 5f;
+        [SerializeField] private float runMultiplier = 1.8f;
+        [SerializeField] private float jumpForce = 5f;
+        [SerializeField] private float gravity = 9.81f;
+
+        [Header("Fly Mode")]
+        [SerializeField] private bool startInFlyMode = false;
+        [SerializeField] private float flySpeedMultiplier = 2f;
+        [SerializeField] private KeyCode flyToggleKey = KeyCode.F;
+
+        public bool IsFlying { get; private set; }
+
+        private CharacterController _controller;
+        private float _yaw;
+        private float _pitch;
+        private Vector3 _velocity;
+
+        private void Awake()
+        {
+            _controller = GetComponent<CharacterController>();
+            if (playerCamera == null)
+                playerCamera = GetComponentInChildren<Camera>();
+
+            Vector3 euler = transform.localEulerAngles;
+            _yaw = euler.y;
+            _pitch = euler.x;
+
+            Cursor.lockState = CursorLockMode.Locked;
+            Cursor.visible = false;
+
+            IsFlying = startInFlyMode;
+        }
+
+        private void Update()
+        {
+            HandleLook();
+            HandleModeToggle();
+            HandleMove();
+        }
+
+        private void HandleLook()
+        {
+            if (Cursor.lockState != CursorLockMode.Locked || playerCamera == null)
+                return;
+
+            float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity;
+            float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity;
+
+            _yaw += mouseX;
+            _pitch -= mouseY;
+            _pitch = Mathf.Clamp(_pitch, minPitch, maxPitch);
+
+            transform.rotation = Quaternion.Euler(0f, _yaw, 0f);
+            playerCamera.transform.localRotation = Quaternion.Euler(_pitch, 0f, 0f);
+        }
+
+        private void HandleModeToggle()
+        {
+            if (Input.GetKeyDown(flyToggleKey))
+            {
+                IsFlying = !IsFlying;
+                // Reset vertical velocity when switching modes
+                _velocity.y = 0f;
+            }
+        }
+
+        private void HandleMove()
+        {
+            Vector3 input = new Vector3(
+                Input.GetAxisRaw("Horizontal"),
+                0f,
+                Input.GetAxisRaw("Vertical")
+            ).normalized;
+
+            float speed = walkSpeed;
+            if (Input.GetKey(KeyCode.LeftShift))
+                speed *= runMultiplier;
+
+            if (IsFlying)
+                speed *= flySpeedMultiplier;
+
+            Vector3 move = transform.TransformDirection(input) * speed;
+
+            if (IsFlying)
+            {
+                // Vertical fly
+                if (Input.GetKey(KeyCode.Space))
+                    move.y += speed;
+                if (Input.GetKey(KeyCode.LeftControl))
+                    move.y -= speed;
+
+                // No gravity
+                _controller.Move(move * Time.deltaTime);
+            }
+            else
+            {
+                // Grounded mode with gravity / jump
+                if (_controller.isGrounded)
+                {
+                    _velocity.y = -1f; // small downward force
+
+                    if (Input.GetKeyDown(KeyCode.Space))
+                    {
+                        _velocity.y = jumpForce;
+                    }
+                }
+                else
+                {
+                    _velocity.y -= gravity * Time.deltaTime;
+                }
+
+                Vector3 finalMove = new Vector3(move.x, _velocity.y, move.z);
+                _controller.Move(finalMove * Time.deltaTime);
+            }
+        }
+    }
+}

Assets/Scripts/UI/DebugHUD.cs

@@ -0,0 +1,68 @@
+using UnityEngine;
+using BlackRoad.Worldbuilder.Environment;
+using BlackRoad.Worldbuilder.Building;
+using BlackRoad.Worldbuilder.Player;
+
+namespace BlackRoad.Worldbuilder.UI
+{
+    /// <summary>
+    /// Very simple on-screen HUD for development:
+    /// shows time of day, current build prefab, and fly/walk mode.
+    /// </summary>
+    public class DebugHUD : MonoBehaviour
+    {
+        [SerializeField] private DayNightCycle dayNight;
+        [SerializeField] private BuildTool buildTool;
+        [SerializeField] private PlayerController playerController;
+
+        [Header("Style")]
+        [SerializeField] private int fontSize = 14;
+        [SerializeField] private Color textColor = Color.white;
+        [SerializeField] private Vector2 margin = new Vector2(10f, 10f);
+
+        private GUIStyle _style;
+
+        private void Awake()
+        {
+            if (dayNight == null)
+                dayNight = FindObjectOfType<DayNightCycle>();
+            if (buildTool == null)
+                buildTool = FindObjectOfType<BuildTool>();
+            if (playerController == null)
+                playerController = FindObjectOfType<PlayerController>();
+        }
+
+        private void OnGUI()
+        {
+            if (_style == null)
+            {
+                _style = new GUIStyle(GUI.skin.label)
+                {
+                    fontSize = fontSize,
+                    normal = { textColor = textColor }
+                };
+            }
+
+            float x = margin.x;
+            float y = margin.y;
+
+            string mode = playerController != null && playerController.IsFlying ? "FLY" : "WALK";
+            string blockName = buildTool != null && buildTool.CurrentPrefab != null
+                ? buildTool.CurrentPrefab.name
+                : "(none)";
+
+            string timeStr = dayNight != null
+                ? $"{(dayNight.timeOfDay * 24f):0.0}h"
+                : "n/a";
+
+            GUI.Label(new Rect(x, y, 400f, 24f),
+                $"Time: {timeStr}   Mode: {mode}   Block: {blockName}",
+                _style);
+
+            y += 22f;
+            GUI.Label(new Rect(x, y, 400f, 24f),
+                "LMB: place   RMB: remove   1–9: select prefab   F: toggle fly",
+                _style);
+        }
+    }
+}