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国庆阅兵方阵的Scratch课,教案课件源码全套已备好

  • 2026-10-01 08:46:20
国庆阅兵方阵的Scratch课,教案课件源码全套已备好
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国庆阅兵方阵

Scratch 进阶项目 · 克隆体大军走过天安门,战机拖着三色尾迹通场

克隆体大军广播同步画笔尾迹坐标位移2 课时

点绿旗,五个方阵依次从天安门前走过去。红旗打头阵,陆军、海军、女兵依次跟上,坦克压轴。天上还有三架战机,拖着红黄蓝三条彩烟通场。

项目内容
舞台背景天安门广场1张
角色红旗方阵、陆军方阵、海军方阵、女兵方阵、坦克方阵、战机编队共6个
造型红旗/陆军/海军/女兵各 4 个造型(换腿用);坦克 2 个造型;战机 1 个
扩展音乐扩展、画笔扩展
变量px(6 个角色各自的私有变量)、trail(战机编队的私有变量)
1
第一步:背景控制角色造型切换

阅兵最难的是整齐。

如果在每个角色写切换造型指令,不久就会乱。我们在背景统一发送广播,统一控制切换造型。这样就可以保证所有角色动作一致。

2
第二步:女兵、海军、陆军方阵

各个兵种的克隆程序,基本上是一样的,只是等待的时间不一样。

3
第三步:控制方阵能够步调一致移动

一步3.34,走200步,一共668步,所以刚好走完全程再离开画面,然后再删除此克隆体

4
第四步:换腿不一致解决办法

在背景发出切换造型的广播,所有角色都可以同步了。

5
第五步:战机使用画笔天上的彩烟

一个角色、三份颜色,靠的就是 trail 这个变量。

方阵
造型数
大小
起点 y
等待(入场时间)
出生间隔
克隆体个数
红旗方阵
4
23.4
-79
0 秒
18 帧
4
陆军方阵
4
34.1
-79
5.5 秒
16 帧
5
海军方阵
4
33.1
-78.8
11 秒
14 帧
5
女兵方阵
4
32.9
-79.3
16.5 秒
15 帧
5
坦克方阵
2
16.4
-97
22 秒
24 帧
3
战机编队
1
24.9
148 / 126 / 168
9.5 秒
—
3

【参考讲义与课件】

基本 文件 流程 错误 SQL 调试
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  4. 会话信息 : SESSION_ID=bc8a95a9031be4d1997b93da2a78101e
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  1. CONNECT:[ UseTime:0.000464s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000611s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000313s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000414s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000534s ]
  6. SELECT * FROM `set` [ RunTime:0.000283s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000677s ]
  8. SELECT * FROM `article` WHERE `id` = 532614 LIMIT 1 [ RunTime:0.000354s ]
  9. UPDATE `article` SET `lasttime` = 1790913505 WHERE `id` = 532614 [ RunTime:0.001291s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000305s ]
  11. SELECT * FROM `article` WHERE `id` < 532614 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000455s ]
  12. SELECT * FROM `article` WHERE `id` > 532614 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000465s ]
  13. SELECT * FROM `article` WHERE `id` < 532614 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000519s ]
  14. SELECT * FROM `article` WHERE `id` < 532614 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000505s ]
  15. SELECT * FROM `article` WHERE `id` < 532614 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000681s ]
0.088306s