MakeCode Microbit 遊戲設計：「接雞蛋」(Microbit Game: Egg Catching)

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小編曾做過 Scratch 遊戲：接雞蛋，而且最近剛好看到Youtube 上的影片：Micro:bit 創意遊戲：「接水果」。於是來教大家自己用Microbit來做一個玩玩吧。The blog post: Scratch 遊戲：接雞蛋 created a egg-catching game. And there is a video on youtube: Micro:bit 創意遊戲：「接水果」. So, this post will create a Microbit game: Egg Catching.

首先來分析影片中遊戲的功能有哪些：

Game design:

1. 角色「player」（就是玩家你囉），位在最下方的紅點。Player will be at (x, y) = (2, 4) when the game is started.
2. 角色「egg」（從天而降的雞蛋），位於上方不停落下的紅點。Egg will be at (x, y) = (pick random 0 to 4, 0) when the game is started.
3. A按鈕將「player」角色往左移動一格。When the A button is pressed, player moves to the left.
4. B按鈕將「player」角色往右移動一格。When the B button is pressed, player moves to the right.
5. 「player」角色接到「egg」角色時，會有動畫與音效，並得一分。When the player catches the egg, score 1 and perform some animation and play a melody.
6. 雞蛋落到地面三次時，遊戲結束，並顯示Game Over，以及總得分。When the egg fall to the ground three times, the game is over. Show "Game Over" and total score on the screen.

製作步驟 Steps

步驟零：開啟 Makecode Microbit Editor (Step 0: open Makecode Microbit Editor

進入 https://makecode.microbit.org/ 
Go to https://makecode.microbit.org/  

步驟一：建立新專案 (Step 1: Create New Project)

點選有  + 號的 New Project

Click the + symbol to create a New Project

專案名稱可用 CatchMe，按下 Create 按鈕

Give your project a name: CatchMe, click Create button.

步驟二：建立變數(Step 2: Make variables)

使用 Make a Variable 來建立兩個變數：egg 與 player 。

Click Make a Variable  to make two variables: egg and player .

步驟三：當Microbit啟動時(Step 3: When Microbit is on start)

這兒有三件事要做，如下說明：

Three things to be done here, as the following descriptions:

1. 角色「player」（就是玩家你囉），位在最下方的紅點。Player will be at (x, y) = (2, 4) when the game is started.
2. 角色「egg」（從天而降的雞蛋），位於上方不停落下的紅點。Egg will be at (x, y) = (pick random 0 to 4, 0) when the game is started.
3. 設定生命數為3。 Set 3 lives to the game.
   
   
   

步驟四：當按鈕按下時(Step 4: When a button is pressed)

這兒有兩件事要做，如下說明：

Two things to be done here, as the following descriptions:

1. A按鈕將「player」角色往左移動一格。When the A button is pressed, player moves to the left.
2. B按鈕將「player」角色往右移動一格。When the B button is pressed, player moves to the right.

步驟五：不停重複(Step 5: forever)

這兒有三件事要做，如下說明：

Three things to be done here, as the following descriptions:

1. 雞蛋一秒下降一格。The egg moves down every second.
   
   
   
2. 「player」角色接到「egg」角色時，會有動畫與音效，並得一分。When the player catches the egg, score 1 and perform some animation and play a melody.
   
   
   
3. 雞蛋落到地面三次時，遊戲結束，並顯示Game Over，以及總得分。When the egg fall to the ground three times, the game is over. Show "Game Over" and total score on the screen.
   
   
   

Demo Video：

程式範例網址(Blocks Code Example)：https://makecode.microbit.org/_PVdiyw6TbfdW