feat(战斗系统): 添加技能攻击支持并修复武器数组越界问题

- 在EntityBase.gd中添加武器数组越界检查，防止崩溃
- 在Rooster.gd中新增技能攻击输入处理，支持3个技能按键
- 在project.godot中配置技能按键映射(1,2,3键)

project.godot

@@ -82,6 +82,21 @@ openWeapon={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":73,"key_label":0,"unicode":105,"location":0,"echo":false,"script":null)
 ]
 }
+skill0={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":49,"key_label":0,"unicode":49,"location":0,"echo":false,"script":null)
+]
+}
+skill1={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":50,"key_label":0,"unicode":50,"location":0,"echo":false,"script":null)
+]
+}
+skill2={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":51,"key_label":0,"unicode":51,"location":0,"echo":false,"script":null)
+]
+}
 
 [physics]
 

scripts/Contents/Characters/Rooster.gd

@@ -17,6 +17,9 @@ func ai():
 		tryAttack(0)
 	elif Input.is_action_pressed("attack2"):
 		tryAttack(1)
+	for i in range(3):
+		if Input.is_action_pressed("skill" + str(i)):
+			tryAttack(2 + i)
 	if Input.is_action_just_pressed("sprint"):
 		trySprint()
 	if Input.is_action_just_pressed("heal"):

scripts/Statemachine/EntityBase.gd

@@ -199,7 +199,10 @@ func useEnergy(value: float):
 func tryAttack(type: int, needChargeUp: bool = false):
 	var weapon: Weapon
 	if isPlayer():
-		weapon = weapons[type]
+		if len(weapons) > type:
+			weapon = weapons[type]
+		else:
+			return
 	var state
 	if isPlayer():
 		state = true