feat: Add core player input, movement, and special ability management systems with new UI components.

scenes/main.gd

@@ -1640,8 +1640,8 @@ func sync_grid_item(x: int, y: int, z: int, item: int):
 			var f1 = enhanced_gridmap.get_cell_item(Vector3i(x, 1, z))
 			
 			# Block if Layer 0 is Wall (4) or Void (-1) 
-			# OR Layer 1 is already a wall (4 or 13)
-			if f0 in [4, -1] or f1 == 4 or f1 == 13:
+			# OR Layer 1 is already a wall (4)
+			if f0 in [4, -1] or f1 == 4:
 				return
 
 		enhanced_gridmap.set_cell_item(Vector3i(x, y, z), item)
@@ -1666,7 +1666,7 @@ func sync_grid_items_batch(data: Array):
 		if y == 1 and item >= 7 and item <= 20:
 			var f0 = enhanced_gridmap.get_cell_item(Vector3i(x, 0, z))
 			var f1 = enhanced_gridmap.get_cell_item(Vector3i(x, 1, z))
-			if f0 in [4, -1] or f1 == 4 or f1 == 13:
+			if f0 in [4, -1] or f1 == 4:
 				continue
 				
 		enhanced_gridmap.set_cell_item(Vector3i(x, y, z), item)

scripts/managers/player_input_manager.gd

@@ -114,22 +114,29 @@ func handle_unhandled_input(event):
 		
 		# Unified check for PowerUp keys
 		if ek == key_p1:
-			player.activate_powerup(0) # FASTER_SPEED
-		elif ek == key_p2:
-			if is_sng:
-				player.activate_powerup(3) # Ghost for SNG P2
-			else:
-				player.activate_powerup(2) # Wall for Normal P2
-		elif ek == key_p3 and not is_sng:
-			player.activate_powerup(1) # AREA_FREEZE
-		elif ek == key_p4 and not is_sng:
-			player.activate_powerup(3) # INVISIBLE_MODE
+			# Single Slot Logic: Find whatever powerup is currently set to 'true' and activate it
+			var active_effect = -1
+			if player.special_tiles_manager:
+				for effect_key in player.special_tiles_manager.inventory:
+					if player.special_tiles_manager.inventory[effect_key]:
+						active_effect = effect_key
+						break
 			
-		# Non-Remappable variants (Numpad) - Optional fallback
+			if active_effect != -1:
+				player.activate_powerup(active_effect)
+			else:
+				print("No powerup in slot 1 to activate.")
+		
+		# KP Fallback
 		elif ek == KEY_KP_1:
-			player.activate_powerup(0)
-		elif ek == KEY_KP_2:
-			player.activate_powerup(3 if is_sng else 2)
+			var active_effect = -1
+			if player.special_tiles_manager:
+				for effect_key in player.special_tiles_manager.inventory:
+					if player.special_tiles_manager.inventory[effect_key]:
+						active_effect = effect_key
+						break
+			if active_effect != -1:
+				player.activate_powerup(active_effect)
 			
 		# Action Buttons (Remappable)
 		elif ek == SettingsManager.get_control_keycode("attack_mode"):

scripts/managers/player_movement_manager.gd

@@ -96,7 +96,7 @@ func simple_move_to(grid_position: Vector2i) -> bool:
 		return false
 		
 	# Check Floor 1 (Obstacles/Walls)
-	if (cell_item != -1 and cell_item in [4, 13, 16]) and not is_wall_passable:
+	if (cell_item != -1 and cell_item in [4, 16]) and not is_wall_passable:
 		print("[Move] Failed: Blocked by Item %d on Floor 1" % cell_item)
 		return false
 	

scripts/managers/special_tiles_manager.gd

@@ -118,6 +118,12 @@ func initialize(p_player: Node3D, p_gridmap: Node):
 	enhanced_gridmap = p_gridmap
 	rng = RandomNumberGenerator.new()
 	rng.randomize()
+	
+	# Ensure Powerup Tiles (11-14) are NOT in the non-walkable list
+	if enhanced_gridmap and "non_walkable_items" in enhanced_gridmap:
+		for id in HOLO_TILES:
+			if id in enhanced_gridmap.non_walkable_items:
+				enhanced_gridmap.non_walkable_items.erase(id)
 
 # =============================================================================
 # Helper: Item ID to Effect Enum
@@ -137,45 +143,58 @@ func add_powerup_from_item(item_id: int):
 	var effect = get_effect_from_item(item_id)
 	if effect == -1: return
 
-	# Unlock or Level Up
-	if not inventory.get(effect, false):
-		# New Unlock
-		inventory[effect] = true
-		powerup_levels[effect] = 1
-		emit_signal("inventory_updated", inventory)
-		emit_signal("powerup_unlocked", effect, 1)
-		print("Player %s unlocked powerup %s (Lvl 1)" % [player.name, SpecialEffect.keys()[effect]])
-	else:
-		# Level Up
-		var current_lvl = powerup_levels.get(effect, 1)
-		if current_lvl < 8:
-			powerup_levels[effect] = current_lvl + 1
-			emit_signal("powerup_unlocked", effect, powerup_levels[effect])
-			print("Player %s leveled up %s to Lvl %d" % [player.name, SpecialEffect.keys()[effect], powerup_levels[effect]])
+	# 1-PowerUp Rule: If this is a DIFFERENT power-up, clear the old one
+	var is_different = not inventory.get(effect, false)
+	var already_has_any = false
+	for e in inventory:
+		if inventory[e]:
+			already_has_any = true
+			break
+			
+	if is_different and already_has_any:
+		print("Player %s replacing existing powerup with %s" % [player.name, SpecialEffect.keys()[effect]])
+		for e in inventory:
+			inventory[e] = false
+			powerup_levels[e] = 1 # Reset levels of discarded powerups
+
+	# Instant Level 8 on pickup (User Request)
+	inventory[effect] = true
+	powerup_levels[effect] = 8
+	emit_signal("inventory_updated", inventory)
+	emit_signal("powerup_unlocked", effect, 8)
+	print("[SpecialTiles] SUCCESS: Player %s picked up %s. Force Level 8 applied." % [player.name, SpecialEffect.keys()[effect]])
 		
 	if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
-		rpc("sync_inventory_add", effect, powerup_levels[effect])
+		rpc("sync_inventory_add", effect, 8)
 
 @rpc("any_peer", "call_local", "reliable")
 func sync_inventory_add(effect: int, level: int):
+	# Clear others on sync too to maintain 1-powerup rule
+	for e in inventory:
+		inventory[e] = false
+		powerup_levels[e] = 1 # Reset levels of discarded powerups
+		
 	inventory[effect] = true
 	powerup_levels[effect] = level
 	emit_signal("inventory_updated", inventory)
 	emit_signal("powerup_unlocked", effect, level)
 
 func remove_powerup(effect: int):
-	# We DO NOT remove item from inventory on use anymore (for reusable leveling system)?
-	# Wait, user request: "cooldown is decarese and max is level 8"
-	# Does "activate it" consume the item? 
-	# User says "it will cooldown agian for 15 seconds". 
-	# Implies PERMANENT UNLOCK once picked up, reusable with cooldown.
-	# So we NEVER set inventory[effect] = false unless reset.
-	pass
+	# User Request: "If the power up already use it will remain empty"
+	if inventory.get(effect, false):
+		inventory[effect] = false
+		powerup_levels[effect] = 1
+		emit_signal("inventory_updated", inventory)
+		print("[SpecialTiles] Player %s consumed powerup %s" % [player.name, SpecialEffect.keys()[effect]])
+		
+		if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
+			rpc("sync_inventory_remove", effect)
 
 @rpc("any_peer", "call_local", "reliable")
 func sync_inventory_remove(effect: int):
-	# Deprecated for new system, but kept for compatibility if needed
-	pass
+	inventory[effect] = false
+	powerup_levels[effect] = 1
+	emit_signal("inventory_updated", inventory)
 
 # =============================================================================
 # Activate Effect (Explicit Target)
@@ -228,8 +247,10 @@ func activate_effect(effect: int, target_player: Node3D = null):
 	# Play generic cast animation or sound?
 	if player.is_multiplayer_authority() and multiplayer.has_multiplayer_peer() and multiplayer.multiplayer_peer.get_connection_status() == MultiplayerPeer.CONNECTION_CONNECTED:
 		player.rpc("trigger_screen_shake", "light")
-		# Sync cooldown to others not strictly needed unless UI shows it? 
-		# Probably local UI only.
+	
+	# Consumable: Remove after use (User Request)
+	print("[SpecialTiles] Consuming %s after successful activation." % SpecialEffect.keys()[effect])
+	remove_powerup(effect)
 
 
 # =============================================================================
@@ -256,10 +277,9 @@ func _execute_area_freeze(target_pos: Vector2i = Vector2i.ZERO):
 	var current_lvl = powerup_levels.get(SpecialEffect.AREA_FREEZE, 1)
 	
 	if center_pos == Vector2i.ZERO:
-		# Calculate distance ahead based on Level
-		# Gap of 2 floors = 3 tiles ahead
-		# Gap of 4 floors = 5 tiles ahead
-		var distance = 3 if current_lvl < 5 else 5
+		# Updated: Always 3 tiles ahead as per user request
+		var distance = 3
+		print("[SpecialTiles] Area Freeze logic executing with distance: %d" % distance)
 		
 		var movement = player.movement_manager
 		if movement and movement.current_move_direction != Vector2i.ZERO:
@@ -441,7 +461,7 @@ func spawn_powerups_around(center: Vector2i, force_powerups: bool = true, only_c
 				# PROTECTED FLOOR CHECK: Don't spawn on existing walls or void
 				var f0 = enhanced_gridmap.get_cell_item(Vector3i(pos.x, 0, pos.y))
 				var f1 = enhanced_gridmap.get_cell_item(Vector3i(pos.x, 1, pos.y))
-				if f0 in [4, -1] or f1 in [4, 13, 16]:
+				if f0 in [4, -1] or f1 in [4, 16]:
 					continue
 				
 				var item_id: int

scripts/managers/stop_n_go_manager.gd

@@ -20,7 +20,7 @@ var safe_zone_centers: Array[Vector2i] = []
 var safe_zone_spawned: bool = false
 
 # Power-Up Tile Spawning
-const POWERUP_TILES = [11, 14] # Speed (11) and Ghost (14)
+const POWERUP_TILES = [11, 12, 13, 14] # Speed, Freeze, Wall, Ghost
 const POWERUP_SPAWN_COUNT: int = 5 # Number of power-up tiles to spawn
 var powerups_spawned: bool = false
 var stop_phase_occurred: bool = false
@@ -362,7 +362,7 @@ func _spawn_mission_tiles():
 			var current_item = gridmap.get_cell_item(Vector3i(x, 1, z))
 			
 			# PROTECTED FLOOR CHECK: Don't spawn on walls or void
-			if base_tile in [TILE_OBSTACLE, -1] or current_item == TILE_OBSTACLE or current_item == 13:
+			if base_tile in [TILE_OBSTACLE, -1] or current_item == TILE_OBSTACLE:
 				continue
 				
 			# Spawn tiles with 60% density

scripts/ui/powerup_inventory_ui.gd

@@ -50,16 +50,13 @@ func _ready():
 	_setup_btn(2, wall_btn)
 	_setup_btn(3, ghost_btn)
 
-	# All skills available with new logic, but restricted in Stop n Go
-	if is_restricted:
-		if wall_btn: wall_btn.visible = false
-		if freeze_btn: freeze_btn.visible = false
-		# Re-setup shortcut labels for restricted mode
-		_update_shortcuts_for_mode(true)
-	else:
-		if wall_btn: wall_btn.visible = true
-		if freeze_btn: freeze_btn.visible = true
-		_update_shortcuts_for_mode(false)
+	# Remove mode-based restrictions on visibility for now, as ownership controls visibility
+	if wall_btn: wall_btn.visible = false
+	if freeze_btn: freeze_btn.visible = false
+	if speed_btn: speed_btn.visible = false
+	if ghost_btn: ghost_btn.visible = false
+	
+	_update_shortcuts_for_mode(is_restricted)
 	
 	
 	print("[PowerUpUI] UI Initialization Complete. Mapped %d buttons." % icon_containers.size())
@@ -140,33 +137,16 @@ func _update_shortcuts_for_mode(is_restricted: bool):
 		var btn = icon_containers[effect_id]
 		_update_btn_shortcut(effect_id, btn)
 
-func _update_btn_shortcut(effect_id: int, btn: Button):
+func _update_btn_shortcut(_effect_id: int, btn: Button):
 	var sc_lbl = btn.get_node_or_null("ShortcutLabel")
 	if not sc_lbl: return
 	
-	var mode = LobbyManager.get_game_mode()
-	var is_sng = mode == GameMode.Mode.STOP_N_GO
-	
-	var key_text = ""
-	
-	# Safety check for SettingsManager (Autoload)
 	if not SettingsManager:
 		sc_lbl.text = ""
 		return
 
-	if is_sng:
-		match effect_id:
-			0: key_text = SettingsManager.get_control_text("powerup_1")
-			3: key_text = SettingsManager.get_control_text("powerup_2") # Map P2 to Slot 3 (Ghost) in SNG
-			_: key_text = ""
-	else:
-		match effect_id:
-			0: key_text = SettingsManager.get_control_text("powerup_1")
-			2: key_text = SettingsManager.get_control_text("powerup_2")
-			1: key_text = SettingsManager.get_control_text("powerup_3")
-			3: key_text = SettingsManager.get_control_text("powerup_4")
-	
-	sc_lbl.text = key_text
+	# Show only Shortcut 1 as per single-slot request
+	sc_lbl.text = "[%s]" % SettingsManager.get_control_text("powerup_1")
 
 func _on_btn_pressed(effect_id: int):
 	print("[PowerUpUI] Clicked Button %d" % effect_id)
@@ -241,6 +221,10 @@ func _on_powerup_unlocked(effect: int, level: int):
 		var lvl_lbl = btn.get_node_or_null("LevelLabel")
 		if lvl_lbl:
 			lvl_lbl.text = "Lvl %d" % level
+			
+		# Enforce 1-slot rule by hiding others
+		if special_manager_ref:
+			_on_inventory_updated(special_manager_ref.inventory)
 	else:
 		print("[PowerUpUI] ERROR: Unlocked Effect %d but no UI button found! Keys: %s" % [effect, icon_containers.keys()])
 
@@ -261,12 +245,15 @@ func _on_cooldown_updated(effect: int, time_left: float, max_time: float):
 					btn.modulate = Color.WHITE
 
 func _on_inventory_updated(inventory: Dictionary):
-	# Update UI icons (Dimmed vs Lit) and Enablement
-	print("[PowerUpUI] Inventory Updated: ", inventory)
+	# Update UI icons (Only show ONE active slot as per user request)
+	print("[PowerUpUI] Inventory Updated Signal Received! Data: ", inventory)
 	for effect in icon_containers:
-		if inventory.has(effect):
-			var has_item = inventory[effect]
-			var btn = icon_containers[effect]
-			
-			btn.modulate = Color.WHITE if has_item else Color(0.5, 0.5, 0.5, 0.5)
-			btn.disabled = !has_item
+		var has_item = inventory.get(effect, false)
+		var btn = icon_containers[effect]
+		
+		# Single slot logic: Only the owned one is visible
+		btn.visible = has_item
+		if has_item:
+			btn.disabled = false # Individual cooldown logic might disable it later
+			btn.modulate = Color.WHITE
+			_update_btn_shortcut(effect, btn)