feat: Add weapon system and attack functionality to Rooster character

- Introduced a weapons node in EntityBase for weapon management.
- Updated Rooster to include cooldown for attacks and weapon anchoring.
- Implemented attack method in Rooster to generate bullets.
- Enhanced BulletBase with life distance and lifetime properties.
- Created Chick character with animations and integrated into the world.
- Updated PurpleCrystal bullet behavior to move forward based on rotation.
- Refactored EntityBase to use a fields dictionary for attributes.
- Added FieldStore for managing entity-related constants.
- Adjusted GameRule to include bullet speed multiplier.

scripts/Statemachine/BulletBase.gd

@@ -3,11 +3,26 @@ class_name BulletBase
 
 @export var speed: float = 1
 @export var damage: float = 10
+@export var lifeDistance: float = -1 # -1表示无限距离
+@export var lifeTime: float = -1 # -1表示无限时间
 
 var launcher: EntityBase = null
+var spawnInWhen: float = 0
+var spawnInWhere: Vector2 = Vector2.ZERO
 
 func _ready():
 	area_entered.connect(hit)
+	spawnInWhen = Time.get_ticks_msec()
+	spawnInWhere = position
+func _process(_delta: float) -> void:
+	if lifeTime > 0:
+		if Time.get_ticks_msec() - spawnInWhen >= lifeTime:
+			destroy()
+	if lifeDistance > 0:
+		if position.distance_to(spawnInWhere) >= lifeDistance:
+			destroy()
+func _physics_process(_delta: float) -> void:
+	ai()
 
 func hit(target: Node):
 	var entity: EntityBase = EntityTool.fromHurtbox(target)
@@ -16,6 +31,13 @@ func hit(target: Node):
 	if GameRule.allowFriendlyFire:
 		if entity.isPlayer() == launcher.isPlayer(): return
 	entity.takeDamage(self)
+func forward(direction: Vector2):
+	position += direction.normalized() * speed * GameRule.bulletSpeedMultiplier
+
+func ai():
+	pass
+func destroy():
+	queue_free()
 
 static func generate(
 		bullet: PackedScene,