SCRATCH 编程乐园:轻松制作炫酷的游戏

目录
原著致谢 ..................................................................................XII
前言 ........................................................................................XIII
本书为谁创作 ..............................................................................XIV
关于本书 ......................................................................................XIV
如何使用这本书 ..........................................................................XVI
在线资源 .....................................................................................XVII
读者服务 .............................................................................. XVIII
第1 章　开始Scratch 编程之旅 ................................................ 1
启动Scratch ......................................................................................2
离线编辑器 .......................................................................................3
Scratch 编辑器和角色 .....................................................................4
绘图编辑器 .......................................................................................5
用代码块开始工作 .............................................................................. 7
增加代码块 .......................................................................................... 7
删除模块 .............................................................................................. 8
运行程序 .............................................................................................. 8
展示你的程序 ...................................................................................9
获得帮助 .........................................................................................10
帮助窗口 ............................................................................................10
转到设计页 ........................................................................................ 11
总结 .................................................................................................12
第2 章　太空中的彩虹线 ......................................................... 13
设计游戏草图 .................................................................................14
A 创建太空背景 ..........................................................................16
1．清理并设置舞台 ..........................................................................16
B 创建3 个会反弹的点 ..............................................................18
2．画点 ..............................................................................................18
3．为“Dot1”角色添加代码 ..........................................................20
拓展：方向和角度 ............................................................................20
4．复制“Dot1”角色 ......................................................................22
C 画出彩虹线 ..............................................................................23
5．为“画线点”角色添加代码 ......................................................23
完整的程序 .....................................................................................25
加速模式 .........................................................................................26
2.0 版本：三角形的彩虹 ...............................................................27
3.0 版本：两条彩虹线 ...................................................................28
4.0 版本：你来决定 .......................................................................29
总结 .................................................................................................29
回顾思考 .........................................................................................30
第3 章　穿越迷宫 .................................................................... 31
设计游戏草图 .................................................................................32
A 让小猫动起来 ..........................................................................34
拓展：探索x 坐标与y 坐标 ............................................................34
1．添加小猫移动代码 ......................................................................36
2．为小猫角色复制移动程序模块 ..................................................37
B 让迷宫升级 ..............................................................................39
3．下载迷宫图形 ..............................................................................39
4．修改背景 ......................................................................................39
5．从**个迷宫开始 ......................................................................39
C 避免小猫穿墙而过 ..................................................................40
6．侦测小猫是否碰到了墙壁 ..........................................................40
D 在迷宫的尽头设置一个目标 ..................................................42
7．创建苹果角色 ..............................................................................43
8．侦测到游戏者何时接触到了苹果 ..............................................43
9．给迷宫角色添加处理广播消息代码块 ......................................45
完整的程序 .....................................................................................45
2.0 升级版本：双玩家模式 ...........................................................47
复制“Apple”角色 ..........................................................................47
修改“Apple2”角色的程序 ............................................................48
复制橘色小猫角色 ............................................................................48
更改蓝色小猫角色的程序 ................................................................49
返回起始位置 ....................................................................................51
3.0 版本：陷阱 ...............................................................................51
为陷阱画一个新角色 ........................................................................52
为陷阱创造第二个造型 ....................................................................52
给陷阱添加克隆程序 ........................................................................53
修改橘色小猫的程序 ........................................................................55
把橘色小猫的程序复制到蓝色小猫 ................................................57
“作弊”模式：穿墙而过 ...............................................................58
给橘色小猫添加穿墙而过的程序 ....................................................58
给蓝色小猫添加穿墙而过的程序 ....................................................58
总结 .................................................................................................59
回顾思考 .........................................................................................60
第4 章　灌篮高手 .................................................................... 63
设计游戏草图 .................................................................................64
A 让小猫跳起并落下 ..................................................................65
1．给小猫角色添加重力代码 ..........................................................65
拓展：“适用于所有角色”与“仅适用于当前角色”的区别 ......66
2．添加地平线代码 ..........................................................................69
3．给小猫添加跳跃的代码 ..............................................................70
B 让小猫左右移动 ......................................................................71
4．让小猫走起来 ..............................................................................71
C 悬空的篮筐 ....................................................................