Add charge throw mechanics; refactor bullet and brick components

scripts/components/charge_throw_component.gd

@@ -0,0 +1,45 @@
+class_name ChargeThrowComponent
+extends Node
+
+@export var min_power: float = 0.5
+@export var max_power: float = 2.0
+@export var max_charge_time: float = 1.5
+
+var charge_start_time: float = 0.0
+var is_charging: bool        = false
+signal charge_started
+signal charge_updated(charge_ratio: float)
+signal charge_stopped
+
+
+func _process(_delta: float) -> void:
+	if not is_charging:
+		return
+
+	var charge_ratio := get_charge_ratio()
+	charge_updated.emit(charge_ratio)
+
+
+func start_charging() -> void:
+	is_charging = true
+	charge_start_time = Time.get_ticks_msec() / 1000.0
+	charge_started.emit()
+
+
+func get_charge_ratio() -> float:
+	if not is_charging:
+		return 0.0
+
+	var held_time := (Time.get_ticks_msec() / 1000.0) - charge_start_time
+	var t         =  clamp(held_time / max_charge_time, 0.0, 1.0)
+
+	return lerp(min_power, max_power, t)
+
+
+func stop_charging() -> float:
+	is_charging = false
+	var held_time := (Time.get_ticks_msec() / 1000.0) - charge_start_time
+	var t         =  clamp(held_time / max_charge_time, 0.0, 1.0)
+	charge_start_time = 0.0
+	charge_stopped.emit()
+	return lerp(min_power, max_power, t)