extends RefCounted
class_name ShipStats

# All multiplicative / additive upgrades for one player's run.
# Stats stack: each item applies via apply_item_def(def) oder apply_item(effects).

var ship_id: String = ""           # set at game start; used for per-ship runtime mechanics
var speed_mult: float = 1.0        # scales THRUST and MAX_SPEED
var turn_mult: float = 1.0         # scales TURN_SPEED
var fire_rate_mult: float = 1.0    # divides BULLET_COOLDOWN_MAX (higher = faster fire)
var damage_mult: float = 1.0       # scales bullet hit radius; >= 2.0 → pierce
var bullet_speed_mult: float = 1.0 # scales bullet travel speed
var bullet_count: int = 1          # shots per trigger press
var shield_charges: int = 0        # absorbs N hits before death
var invuln_mult: float = 1.0       # scales INVULN_FRAMES after hit
var bh_resist: float = 0.0         # 0.0–0.9: fraction of BH pull negated
var wipe_mult: float = 1.0         # scales BigWipe hold-time requirement
var credit_bonus: float = 1.0      # multiplier on all credits earned

# ─── Werkstatt-spezifische Felder ─────────────────────────────────────────────
var hull_scale: float = 3.0        # px per hull pixel (Basis 3.0, Max 4.5)
var owned_item_ids: Array = []     # IDs für visuelle Attachments am Schiff
var has_boost: bool = false        # ist Boost-Taste aktiviert? (TITAN)
var boost_cooldown_max: float = 5.0 # Sekunden zwischen Boosts

# Wendet einen rohen effects-Dict an (Legacy-Shop-Path).
func apply_item(effects: Dictionary) -> void:
	for key: String in effects:
		var val = effects[key]
		match key:
			"speed_mult":        speed_mult        *= float(val)
			"turn_mult":         turn_mult         *= float(val)
			"fire_rate_mult":    fire_rate_mult    *= float(val)
			"damage_mult":       damage_mult       *= float(val)
			"bullet_speed_mult": bullet_speed_mult *= float(val)
			"bullet_count":      bullet_count      += int(val)
			"shield_charges":    shield_charges     = max(0, shield_charges + int(val))
			"invuln_mult":       invuln_mult       *= float(val)
			"bh_resist":         bh_resist          = min(0.9, bh_resist + float(val))
			"wipe_mult":         wipe_mult         *= float(val)
			"credit_bonus":      credit_bonus      *= float(val)
	# Clamp bullet_count auf minimum 1
	bullet_count = max(1, bullet_count)

# Wendet einen ItemDef an (neuer Werkstatt-Path).
func apply_item_def(def: ItemDef) -> void:
	if def == null: return
	apply_item(def.effects)
	hull_scale = min(4.5, hull_scale + def.hull_size_bonus)
	owned_item_ids.append(def.id)