Step 2006

以下有几个部分：
ROLE_AND_TASK：你的角色定义以及任务描述
TOOLS：你可以调用的工具列表，以及每个工具的参数说明
OUTPUT：输出相关规则和约束
TIPS：重要建议
SITUATION：操作历史和任务相关状态

<ROLE_AND_TASK>
你是一个计算机操作代理，正在操作 Ubuntu Linux 桌面。你可以通过截图查看屏幕，并使用鼠标和键盘动作来控制它。

你的任务是：借助工具，来操作一台电脑来达成任务: I want to watch two or more videos in same time on VLC. I tried to run multiple instances of VLC. It worked but can't play videos on those new instances. When I play video it plays on first instance instead of new instance.
Is there any way to solve this problem?。
电脑的操作系统: Ubuntu Linux

工作流程：
1. 理解当前的情况（SITUATION），SITUATION 中会包括策略树状态、任务失败条件列表、关键视觉证据、上次返回的操作、屏幕截图（上次操作前 & 上次操作后）、历史操作简述。
2. 思考如何尽快达成任务，规划接下来的动作。可以是1次动作，也可以是一组BATCH动作。BATCH动作原则见下。
3. 输出tool_calls：包含你规划的需要执行的电脑操作以及维护 SITUAION 的工具调用。
4. 重复上面步骤，直到任务达成。

关于策略树：
- 策略树是一个分层的任务管理结构。
- 它可以帮助你组织和跟踪任务所需的步骤。也可以帮助你在某个细分尝试方向失败时，回退到高级的节点来尝试其他方法。通过维护策略树，你可以系统地分解复杂任务，并且在较困难的子任务中大胆尝试，确保每一步都得到适当的关注和执行。
- 策略树必须以层次结构组织，实例：
`1`: 顶层任务。重要目标或里程碑，从用户给出的任务开始拆解。
`1.1`, `1.2`, ...: 任务 `1` 的子任务。
`1.1.1`, `1.1.2`, ...: 任务 `1.1` 的子任务或尝试路径方案。它们不是实际动作，而是对父任务的子目标贡献。

关于失败条件列表：
- 失败条件列表是一个 checklist
- 它用于辨认当前任务是否还有达成的可能。当所有失败条件都被确认为真后，任务将返回不可能达成。

关于关键视觉证据：
- 关键视觉证据是一些屏幕状态的描述，这些状态可以通过截图来验证。
- 任务完成后，验证模块会检查这些视觉证据是否都满足，以判断任务是否成功完成。

</ROLE_AND_TASK>

<TOOLS>
你拥有以下工具：computer、update_strategy_tree。
每次调用必须包含computer工具的调用来执行电脑操作，update_strategy_tree工具的调用则根据需要选择性使用来维护策略树状态。

## computer
操作电脑的动作库，调用它以在桌面上执行操作。

坐标值定义：
在最新一张屏幕截图中的坐标轴比例，使用 [0, 1] 范围内的归一化值。其中 (0, 0) = 屏幕左上角，(1, 1) = 屏幕右下角。

操作和参数说明：
1. 移动鼠标
{
  "action": "mouse_move",
  "to_coordinate": [float, float], # 移动到的坐标值。
}

2. 移动鼠标并点击鼠标按键
{
  "action": str, # 鼠标按键操作，one of left_click | right_click | middle_click | double_click | triple_click
  "at_coordinate": [float, float], # 移动到的坐标值。
  "with_key": str or None, # 点击时按住的键盘按键(比如"ctrl"、"shift")，如没有则填None。
}

3. 按住鼠标左键并拖动
{
  "action": "left_click_drag",
  "from_coordinate": [float, float], # 起始到的坐标值,
  "to_coordinate": [float, float], # 移动到的坐标值。
  "with_key": str or None, # 点击时按住的键盘按键(比如"ctrl"、"shift")，如没有则填None。
}

4. 输入文字
{
  "action": "type",
  "text": str, # 要输入的文字
  "submit": bool, # 输入后是否按 Enter 键提交
}

5. 键盘按键（单个或组合键）
{
  "action": "key",
  "text": list[str], # 要按的键盘按键组合(如"enter"、"tab"、"ctrl"),
  "with_duration": float or None, # 按键持续时间（秒），如点击则填 null。
}

6. 移动鼠标并滚动鼠标滚轮
{
  "action": "scroll",
  "at_coordinate": [float, float], # 滚动位置的坐标值
  "scroll_direction": str, # 滚动方向，one of "up" | "down" | "left" | "right"
  "scroll_amount": int, # 滚动量，1-30，模拟人类滚轮滚动的幅度。较大的值表示更大幅度的滚动。
}

7. 等待
{
  "action": "wait",
  "duration": float, # 等待秒数。根据操作后界面变化的复杂程度调整等待时间。
}


BATCH动作原则：
BATCH动作指一组连续且相对固定的电脑操作，主要用来减少不必要的对话过程。
- 例如：顺序输入（type→Tab→type）、键盘快捷键（Ctrl+C 然后 Ctrl+V）、输入一段字符后 Enter（在搜索输入框中常用）。
- DO NOT BATCH：涉及界面状态变化等待的操作（如打开菜单/对话框后等待动画）→ 依赖新坐标的操作。例如：点击打开一个菜单后，等待菜单完全展开再点击菜单项，因为菜单项的坐标在菜单完全展开前可能不稳定；滚动页面后再点击某个元素，因为滚动会改变元素的坐标。
**只在比较确定的操作中可以使用多个动作组合。当你不确定时，使用单个动作是更保险的做法**

## update_strategy_tree
维护策略树的相关工具

1. 创建新任务节点
{
  "action": "create",
  "parent_id": str or None, # 父任务ID，根任务则填None。此操作会在这个父节点下顺序创建子节点。
  "description": str, # 任务描述
}

2. 更改节点状态
{
  "action": "change_status",
  "id": str, # 任务ID，使用点号分隔的层次编号（如 1.2.1），程序会自动解析层级关系。
  "new_status": str, # 新状态，one of None | "success" | "fail"
  "fail_reason": str or None, # 失败原因，仅在 new_status=fail 时需要提供
}
</TOOLS>

<OUTPUT>
你需要调用工具来规划接下来需要执行的电脑操作，以及维护SITUATION（如果需要）。
另外你需要输出从最新的屏幕截图中观察到的重要信息、你对当前情况的分析、为什么这么做的思考过程（thoughts）。

```
#### 重要信息

...

#### 情况分析与思考过程

...
```
</OUTPUT>

<TIPS>
- 尽量以最少的操作数完成任务。每个动作都应该有明确的目的，并直接推动任务向前发展。
- 优先操作成功率，其次是操作的效率。
- 尽可能使用键盘快捷键（例如 ctrl+l 聚焦浏览器地址栏），以增加操作的成功率。
- 如果一段时间的多个动作后还未产生预期结果，参考策略树中其父节点的目标并尝试替代路径。
- 始终记得完成时保存文件（例如 ctrl+s），除非任务明确说不需要。
- 永远不要假设操作成功。寻找预期变化的具体视觉证据。
- 如果截图与上一张相同，说明上一次操作没有产生任何效果。不要假设它成功——诊断为什么失败并尝试不同的方法。
</TIPS>

<SITUATION>
SITUATION中有4个部分：策略树状态、上次返回的操作、屏幕截图（上次操作前 & 上次操作后）、历史操作简述

## 1. 策略树状态
1: Disable single instance mode in VLC preferences
  1.1: [success] Open VLC preferences (Tools > Preferences)
  1.2: Switch to 'All' (Advanced) settings mode
  1.3: Navigate to Interface > Control interfaces
  1.4: Uncheck 'Use only one instance when started from file manager'
  1.5: Save preferences and restart VLC
2: Alternative: Use command line flag method
  2.1: Open terminal and launch VLC with --no-one-instance flag
  2.2: Open multiple VLC instances with different video files
3: Test multiple video playback
  3.1: Locate or create sample video files for testing
  3.2: Open first video in first VLC instance
  3.3: Open second video in second VLC instance
  3.4: Verify both videos play simultaneously in separate windows

## 2. 任务失败条件检查
- VLC media player is not installed on the system
- Insufficient permissions to modify VLC configuration files
- No video files available and cannot create test files
- VLC version does not support multiple instances (older than 3.0)

## 3. 关键视觉证据
- Two or more VLC windows visible simultaneously on the desktop
- At least two VLC windows are playing different video content (showing distinct video frames, not the VLC cone logo)
- The 'Use only one instance when started from file manager' checkbox is unchecked in VLC Interface preferences
- Different video titles are visible in the title bars of multiple VLC windows

## 4. 上一次返回的决策

### 4.1. 上一次的观察和思考
```
#### 重要信息

- The Interface section is now selected in the left panel (highlighted in blue)
- The right panel shows "Main interfaces settings" with several options
- I can see "Show advanced options" checkbox which is currently unchecked
- The single instance option is likely hidden because advanced options are not shown
- Other visible options: "Run as daemon process", "Interface interaction" (checked), "Locally collect statistics" (checked)

#### 情况分析与思考过程

The previous action successfully navigated to the Interface section. However, I notice that the "Show advanced options" checkbox is unchecked. In VLC preferences, many advanced settings including the "Use only one instance when started from file manager" option are only visible when "Show advanced options" is enabled.

This explains why I couldn't find the single instance option earlier - it's hidden because advanced options are not shown. I need to:

1. Check the "Show advanced options" checkbox to reveal advanced settings
2. Then look for the single instance option which should appear
3. Uncheck the single instance option
4. Save preferences

Let me click on the "Show advanced options" checkbox to enable it and reveal the hidden settings.
```

### 4.2. 上一次返回的操作
{"function": {"name": "computer", "arguments": {"actions": [{"action": "left_click", "at_coordinate": [0.466, 0.339]}]}}}

## 5. 屏幕截图

## 6. 上一次操作的前50步操作简述
### 步骤 1:
- 描述:
  ```
  #### 重要信息
  
  - VLC media player is already open with the Preferences window displayed
  - The preferences window is currently in "Simple" mode (as indicated by the selected "Simple" radio button at the bottom)
  - There's a terminal window showing VLC version 3.0.16 is installed
  - The "Simple Preferences" window shows tabs for Subtitles/OSD, Input/Code:cs, and Hotkeys
  - To disable single instance mode, I need to switch to "All" (Advanced) settings mode first
  
  #### 情况分析与思考过程
  
  The user wants to watch multiple videos simultaneously in VLC. The issue is that VLC by default uses a single instance mode, which means when you open a new video, it plays in the existing instance rather than a new window.
  
  The solution is to disable the "Use only one instance when started from file manager" option in VLC preferences. However, this setting is only available in the Advanced (All) preferences mode, not in Simple mode.
  
  Looking at the current state:
  1. VLC preferences window is already open - this saves me a step
  2. It's currently in "Simple" mode
  3. I need to switch to "All" mode to access the interface settings
  
  My plan:
  1. Click on the "All" radio button to switch to advanced preferences
  2. Navigate to Interface > Control interfaces
  3. Uncheck the single instance option
  4. Save and restart VLC
  5. Test with multiple video files
  
  First, I need to switch from "Simple" to "All" settings mode by clicking the "All" radio button at the bottom of the preferences window.
  ```
- 操作:
  1. 左键单击坐标 (0.338, 0.834)

### 步骤 2:
- 描述:
  ```
  #### 重要信息
  
  - VLC preferences is now in "Advanced" (All) mode as shown by the title "Advanced Preferences"
  - The left panel shows a tree structure with various categories including "Interface"
  - I can see "Interface" in the tree menu with expandable arrow, and under it there are "Control interfaces" and "Hotkeys settings" visible
  - The "All" radio button is selected at the bottom, confirming we're in advanced mode
  
  #### 情况分析与思考过程
  
  The previous action successfully switched from Simple to Advanced preferences mode. Now I can see the full preferences tree on the left side.
  
  To find the "Use only one instance when started from file manager" setting, I need to:
  1. Click on "Interface" to expand its subcategories (or it might already show some subcategories)
  2. Navigate to "Control interfaces" 
  3. Find and uncheck the single instance option
  
  Looking at the left panel, I can see "Interface" in the tree. I need to click on it to access the Interface settings where the single instance option should be located. Let me click on "Interface" to expand it and see its options.
  
  I'll click on "Interface" in the left tree menu.
  ```
  
  
- 操作:
  1. 左键单击坐标 (0.33, 0.711)

### 步骤 3:
- 描述:
  ```
  #### 重要信息
  
  - The Interface section is now selected and expanded in the left panel
  - I can see "Control interfaces" and "Hotkeys settings" under the Interface category
  - The right panel shows "Main interfaces settings" but not the single instance option
  - The "Control interfaces" option is visible and needs to be clicked to access the single instance setting
  
  #### 情况分析与思考过程
  
  The previous action successfully expanded the Interface section. Now I can see the subcategories. The "Use only one instance when started from file manager" option should be under "Control interfaces" section. I need to click on "Control interfaces" to access that specific setting.
  
  My updated plan:
  1. Click on "Control interfaces" to access the single instance setting
  2. Uncheck the "Use only one instance when started from file manager" option
  3. Save preferences
  4. Restart VLC
  5. Test with multiple video files
  
  Let me click on "Control interfaces" now.
  ```
- 操作:
  1. 左键单击坐标 (0.341, 0.737)

### 步骤 4:
- 描述:
  ```
  #### 重要信息
  
  - The Control interfaces section is now displayed in the right panel
  - I can see several control interface options but NOT the "Use only one instance when started from file manager" option
  - The visible options are: last.fm submission, infrared remote, mouse gestures, motion control, and LibNotify
  - The single instance option might be below the current view or in a different location
  
  #### 情况分析与思考过程
  
  I clicked on "Control interfaces" but the single instance option is not visible in the current view. In VLC 3.0, the "Use only one instance when started from file manager" setting might be:
  1. Further down in this panel (need to scroll)
  2. Under the main "Interface" category rather than "Control interfaces"
  3. In a different subcategory
  
  Let me first try scrolling down in the right panel to see if there are more options below. The settings panel appears to have more content below the visible area.
  
  I'll scroll down in the right panel to look for the single instance option.
  ```
- 操作:
  1. 鼠标滚轮在坐标 (0.57, 0.556) 向下滚动，滚动量 5

### 步骤 5:
- 描述:
  ```
  #### 重要信息
  
  - The Control interfaces section is currently selected but doesn't show the single instance option
  - After scrolling, the right panel shows empty space below the visible options
  - The "Use only one instance when started from file manager" setting is likely in the main "Interface" section, not under "Control interfaces"
  - I need to click on the parent "Interface" category to access the main interface settings
  
  #### 情况分析与思考过程
  
  The previous scroll action showed that the single instance option is not under "Control interfaces". In VLC 3.0, the "Use only one instance when started from file manager" setting is actually located in the main Interface settings, not in the Control interfaces subsection.
  
  I need to click on "Interface" (the parent category) in the left tree to access the main interface settings where the single instance option should be located. This is the correct location for that setting.
  
  Let me click on "Interface" in the left panel to see the main interface settings.
  ```
- 操作:
  1. 左键单击坐标 (0.33, 0.711)


</SITUATION>