feat(UI): 添加游戏开始界面和难度选择功能

实现游戏开始界面，包含难度选择滑块和开始按钮
修改游戏规则初始难度为10并调整掉落物品数量计算
添加游戏开始条件检查，确保运行时间超过3秒且没有敌人时显示制作饲料界面

components/Scenes/FullscreenPanels/Starter.tscn

@@ -0,0 +1,53 @@
+[gd_scene load_steps=4 format=3 uid="uid://c0r1i5tdbwljj"]
+
+[ext_resource type="PackedScene" uid="uid://d3qojeqa3difn" path="res://components/Abstracts/FullscreenPanelBase.tscn" id="1_o0yse"]
+[ext_resource type="Script" path="res://scripts/Contents/Panels/Starter.gd" id="2_ic0aq"]
+
+[sub_resource type="LabelSettings" id="LabelSettings_ch0dv"]
+font_size = 45
+outline_size = 2
+
+[node name="Starter" instance=ExtResource("1_o0yse")]
+offset_top = 0.0
+offset_bottom = 0.0
+script = ExtResource("2_ic0aq")
+
+[node name="wrapper" parent="content" index="1"]
+theme_override_constants/separation = 30
+
+[node name="title" type="Label" parent="content/wrapper" index="0"]
+layout_mode = 2
+size_flags_horizontal = 4
+text = "公鸡大战狗熊"
+label_settings = SubResource("LabelSettings_ch0dv")
+
+[node name="starter" type="VBoxContainer" parent="content/wrapper" index="1"]
+layout_mode = 2
+theme_override_constants/separation = 10
+
+[node name="diffs" type="HBoxContainer" parent="content/wrapper/starter" index="0"]
+layout_mode = 2
+alignment = 1
+
+[node name="tip" type="Label" parent="content/wrapper/starter/diffs" index="0"]
+layout_mode = 2
+text = "选择难度："
+
+[node name="diffEdit" type="HSlider" parent="content/wrapper/starter/diffs" index="1"]
+unique_name_in_owner = true
+custom_minimum_size = Vector2(100, 0)
+layout_mode = 2
+size_flags_vertical = 4
+max_value = 10.0
+value = 1.0
+
+[node name="levelShow" type="Label" parent="content/wrapper/starter/diffs" index="2"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "1/10"
+
+[node name="startBtn" type="Button" parent="content/wrapper/starter" index="1"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 4
+text = "开始"

components/Scenes/UI.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=24 format=3 uid="uid://dfwg750a47ggx"]
+[gd_scene load_steps=25 format=3 uid="uid://dfwg750a47ggx"]
 
 [ext_resource type="PackedScene" uid="uid://ofpg5s3j7esv" path="res://components/UI/BossBar.tscn" id="1_2pe58"]
 [ext_resource type="Script" path="res://scripts/Statemachine/UIState.gd" id="1_f00a6"]
@@ -13,6 +13,7 @@
 [ext_resource type="PackedScene" uid="uid://cksonrrx38k36" path="res://components/Scenes/FullscreenPanels/Pause.tscn" id="12_jkm6o"]
 [ext_resource type="PackedScene" uid="uid://dekcqdhrjs07u" path="res://components/Scenes/FullscreenPanels/Weapon.tscn" id="13_bmc24"]
 [ext_resource type="PackedScene" uid="uid://w2o3klbsssq3" path="res://components/Scenes/FullscreenPanels/Thanks.tscn" id="14_gp8lx"]
+[ext_resource type="PackedScene" uid="uid://c0r1i5tdbwljj" path="res://components/Scenes/FullscreenPanels/Starter.tscn" id="14_pjwgj"]
 
 [sub_resource type="StyleBoxEmpty" id="StyleBoxEmpty_12otr"]
 
@@ -310,3 +311,8 @@ offset_bottom = 0.0
 [node name="Thanks" parent="root/panels" instance=ExtResource("14_gp8lx")]
 visible = false
 layout_mode = 1
+
+[node name="Starter" parent="root/panels" instance=ExtResource("14_pjwgj")]
+visible = false
+z_index = 2
+layout_mode = 1

scripts/Contents/Panels/Starter.gd

@@ -0,0 +1,16 @@
+@tool
+extends FullscreenPanelBase
+
+@onready var diffEdit: HSlider = $"%diffEdit"
+@onready var startBtn: Button = $"%startBtn"
+@onready var levelShow: Label = $"%levelShow"
+
+func _ready():
+	startBtn.pressed.connect(
+		func():
+			Wave.next()
+			UIState.closeCurrentPanel()
+	)
+func _physics_process(_delta):
+	levelShow.text = "%s/10" % diffEdit.value
+	GameRule.difficulty = diffEdit.value

scripts/Statemachine/EntityBase.gd

@@ -255,7 +255,7 @@ func tryDie(by: BulletBase):
 		var item = drops[drop]
 		var count = ceil(randf_range(dropCounts[drop].x, dropCounts[drop].y))
 		for i in range(count):
-			ItemDropped.generate(item, randi_range(0, int(sqrt(count))), position + MathTool.randv2_range(GameRule.itemDroppedSpawnOffset))
+			ItemDropped.generate(item, randi_range(1, int(sqrt(count) + GameRule.difficulty)), position + MathTool.randv2_range(GameRule.itemDroppedSpawnOffset))
 	if MathTool.rate(
 		GameRule.appleDropRate +
 		by.launcher.fields.get(FieldStore.Entity.DROP_APPLE_RATE) +
@@ -268,10 +268,11 @@ func tryDie(by: BulletBase):
 		fields[FieldStore.Entity.MAX_HEALTH] * randf_range(1 - GameRule.beachballOffset, 1 + GameRule.beachballOffset),
 		position + MathTool.randv2_range(GameRule.itemDroppedSpawnOffset)
 	)
+	if isPlayer():
+		if UIState.player == self:
+			UIState.setPanel("GameOver", [displayName, by.launcher.displayName])
 	EffectController.create(preload("res://components/Effects/DeadBlood.tscn"), texture.global_position).shot()
 	await die()
-	if isPlayer() and UIState.player == self:
-		UIState.setPanel("GameOver", [displayName, by.launcher.displayName])
 func tryHeal(count: float):
 	if inventory[ItemStore.ItemType.APPLE] > 0 and health < fields.get(FieldStore.Entity.MAX_HEALTH):
 		inventory[ItemStore.ItemType.APPLE] -= 1

scripts/Statemachine/UIState.gd

@@ -19,6 +19,7 @@ func _ready():
 	energyPercent = $"%percent"
 	itemCollect = $"%itemCollect"
 	skillIconContainer = $"%skillContainer"
+	setPanel("Starter")
 func _process(_delta):
 	bossbar.visible = !!bossbar.entity
 func _physics_process(_delta):

scripts/Tools/GameRule.gd

@@ -1,7 +1,7 @@
 class_name GameRule
 
 static var deadReasons: Array = JsonTool.parseJson("res://resources/constants/deadReasons.json")
-static var difficulty: float = 1 # 难度倍数，可以写小数
+static var difficulty: float = 10 # 难度倍数，可以写小数
 static var allowFriendlyFire: bool = false # 是否允许友军伤害
 static var bulletSpeedMultiplier: float = 1 # 子弹速度倍率
 static var damageOffset: float = MathTool.percent(20) # 伤害随机浮动比例

scripts/Tools/WorldManager.gd

@@ -8,10 +8,9 @@ static var runningTime: int = 0
 func _ready():
 	tree = get_tree()
 	rootNode = self
-	print(GameRule.deadReasons)
 func _physics_process(delta):
 	runningTime += delta * 1000
-	if EntityBase.mobCount() == 0:
+	if EntityBase.mobCount() == 0 and runningTime > 3000:
 		UIState.setPanel("MakeFeed")
 
 static func getTime():