feat: 调整游戏平衡性参数

修改敌人生命值和伤害增长比例，降低难度曲线
调整母鸡掉落物数量范围，增加资源获取
修正小鸡激光子弹的纹理偏移位置

components/Bullets/ChickLaser.tscn

@@ -209,9 +209,9 @@ metadata/_edit_vertical_guides_ = [705.0]
 [node name="rect" parent="texture" index="0"]
 material = SubResource("ShaderMaterial_x6ivr")
 offset_left = 188.0
-offset_top = 0.0
+offset_top = 25.0
 offset_right = 238.0
-offset_bottom = 500.0
+offset_bottom = 525.0
 
 [node name="particles" parent="texture/rect" index="0"]
 position = Vector2(25, 250)

components/Characters/Hen.tscn

@@ -33,9 +33,8 @@ radius = 40.0
 
 [node name="Hen" instance=ExtResource("1_twxai")]
 script = ExtResource("2_8u5a0")
-cooldownUnit = 1000.0
 drops = Array[int]([0, 1])
-dropCounts = Array[Vector2]([Vector2(3, 6), Vector2(1, 4)])
+dropCounts = Array[Vector2]([Vector2(6, 12), Vector2(4, 8)])
 
 [node name="hurt" parent="sounds" index="3"]
 stream = ExtResource("3_ojyt7")