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# **Easy Game**
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[comment]: <> ()
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[](https://www.python.org/downloads/release/python-390/)
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[](https://github.com/PAIA-Playful-AI-Arena/MLGame)
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[](https://github.com/pygame/pygame/releases/tag/2.0.1)
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這是一個吃東西小遊戲,也是 PAIA 的遊戲教學範例
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---
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# 基礎介紹
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## 啟動方式
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- 直接啟動 [main.py](http://main.py) 即可執行
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### 遊戲參數設定
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```python
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# main.py
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game = EasyGame(time_to_play=1000, total_point_count=10, score=5, color="FF9800")
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```
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- `time_to_play`:遊戲執行的終止時間,單位是 frame,也就是遊戲內部更新畫面的次數,每更新一次 frame +1
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- `total_point_count`:遊戲中食物出現的最大數量。
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- `score`:遊戲通關的點數,要超過這個分數才算過關。
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- `color`:主角方塊的顏色,使用16進位顏色表示法
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## 玩法
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- 使用鍵盤 上、下、左、右 控制方塊
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## 目標
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1. 在遊戲時間截止前,盡可能吃到愈多的食物吧!
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### 通關條件
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1. 時間結束前,吃到的食物超過`score`,即可過關。
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### 失敗條件
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1. 時間結束前,吃到的食物少於`score`,即算失敗。
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## 遊戲系統
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1. 行動機制
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上下左右的行動,每次移動`10.5px`
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2. 座標系統
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- 螢幕大小 800 x 600
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- 主角方塊 50 x 50
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- 食物方塊 8 x 8
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---
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# 進階說明
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## 使用AI玩遊戲
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```bash
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# python MLGame.py [options] easy_game [time_to_play] [total_point_count] [score] [color]
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python MLGame.py -i ml_play_template.py easy_game --time_to_play 1200 --total_point_count 15 --score 10 --color FF9800
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```
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遊戲參數依序是[`time_to_play`] [`total_point_count`] [`score`] [`color`]
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## AI範例
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```python
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import random
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class MLPlay:
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def __init__(self):
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print("Initial ml script")
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def update(self, scene_info: dict):
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# print("AI received data from game :", scene_info)
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actions = ["UP", "DOWN", "LEFT", "RIGHT", "NONE"]
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return random.sample(actions, 1)
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def reset(self):
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"""
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Reset the status
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"""
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print("reset ml script")
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pass
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```
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## 遊戲資訊
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- scene_info 的資料格式如下
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```json
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{
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"frame": 25,
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"ball_x": 425,
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"ball_y": 306,
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"foods": [
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{
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"x": 656,
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"y": 210
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},
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...,
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{
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"x": 371,
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"y": 217
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}
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],
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"score": 0,
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"status": "GAME_ALIVE"
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}
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```
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- `frame`:遊戲畫面更新的編號
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- `ball_x`:主角方塊的X座標,表示方塊的左邊座標值。
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- `ball_y`:主角方塊的Y座標,表示方塊的上方座標值。
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- `foods`:食物的清單,清單內每一個物件都是一個食物的左上方座標值
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- `score`:目前得到的分數
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- `status`: 目前遊戲的狀態
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- `GAME_ALIVE`:遊戲進行中
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- `GAME_PASS`:遊戲通關
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- `GAME_OVER`:遊戲結束
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## 動作指令
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- 在 update() 最後要回傳一個字串,主角物件即會依照對應的字串行動,一次只能執行一個行動。
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- `UP`:向上移動
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- `DOWN`:向下移動
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- `LEFT`:向左移動
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- `RIGHT`:向右移動
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- `NONE`:原地不動
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## 遊戲結果
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- 最後結果會顯示在console介面中,若是PAIA伺服器上執行,會回傳下列資訊到平台上。
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```json
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{
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"frame_used": 100,
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"state": "FAIL",
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"attachment": [
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{
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"player": "1P",
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"score": 0,
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"rank": 1
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}
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]
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}
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```
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- `frame_used`:表示使用了多少個frame
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- `state`:表示遊戲結束的狀態
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- `FAIL`:遊戲失敗
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- `FINISH`:遊戲完成
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- `attachment`:紀錄遊戲各個玩家的結果與分數等資訊
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- `player`:玩家編號
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- `score`:吃到的食物總數
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- `rank`:排名
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---
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