feat: let the player live as a citizen with needs and carried inventory

world/ui/player_status_hud.gd

@@ -0,0 +1,46 @@
+class_name PlayerStatusHud
+extends Control
+
+@export var simulation_manager: Node
+
+@onready var status_label: Label = $StatusLabel
+
+var cached_text := ""
+
+
+func _ready() -> void:
+	visible = true
+	_refresh(true)
+
+
+func _process(_delta: float) -> void:
+	_refresh(false)
+
+
+func _refresh(force: bool = false) -> void:
+	if simulation_manager == null or not simulation_manager.has_method("get_player_state"):
+		return
+	var player_state: PlayerStateRecord = simulation_manager.get_player_state()
+	var carried := _carried_text(player_state)
+	var next_text := (
+		"Hunger %.0f · Energy %.0f · Carrying %s"
+		% [player_state.get_hunger(), player_state.get_energy(), carried]
+	)
+	if not force and next_text == cached_text:
+		return
+	cached_text = next_text
+	status_label.text = next_text
+
+
+func _carried_text(player_state: PlayerStateRecord) -> String:
+	var entries: Array[String] = []
+	for raw_item_id in player_state.data["inventory"]:
+		var item_id := String(raw_item_id)
+		var amount := player_state.get_inventory_amount(StringName(item_id))
+		if amount <= 0.0:
+			continue
+		entries.append("%.0f %s" % [amount, StringName(item_id).to_lower()])
+	if entries.is_empty():
+		return "nothing"
+	entries.sort()
+	return " · ".join(entries)