详情
Scratch是由MIT美国麻省理工学院所开发的一套图形化程序设计开发平台，采用各种积木方块，借由堆迭积木方块，让学习程序语言的初学者，能直觉性地判断程序的逻辑架构。
本书使用Scratch范例学习逻辑判断，全书共分五大篇，由Scratch范例中，了解各种程序结构及运算方式，再辅以完整游戏项目实作，让初学者也能融会贯通程序设计的架构。
第 1 章 基础知识............................................................... 1
1.1 简介 .....................................................................................................2
1.2 下载与安装 .........................................................................................2
1.3 操作界面 .............................................................................................4
1.3.1 舞台区 .........................................................................................4
1.3.2 角色区 .........................................................................................5
1.3.3 指令区 .........................................................................................5
1.3.4 脚本区 .........................................................................................6
1.4 综合应用 .............................................................................................8
1.5 第 一个动画故事 ...............................................................................12
1.5.1 认识舞台 ...................................................................................12
1.5.2 角色设置 ...................................................................................13
1.5.3 位置设置 ...................................................................................14
1.5.4 小猫走路动画 ...........................................................................15
1.5.5 猫狗对话 ...................................................................................17
第 2 章 程序设计入门..................................................... 20
2.1 顺序结构 ...........................................................................................21
2.2 循环结构 ...........................................................................................21
2.2.1 计数式循环 ..............................................................................21
2.2.2 条件式循环 ..............................................................................23
2.2.3 无限循环 ..................................................................................25
2.3 选择结构 ...........................................................................................28
2.3.1 单向选择结构 ..........................................................................28
2.3.2 双向选择结构 ..........................................................................30
2.4 变量 ...................................................................................................34
2.4.1 如何增加新变量 .......................................................................34
2.4.2 全局变量 ..................................................................................34
2.4.3 角色变量 ..................................................................................38
2.5 表达式 ...............................................................................................43
第3 章 编程技巧........................................................... 47
3.1 让角色移动 .......................................................................................48
3.1.1 方向与移动值 ..........................................................................48
3.1.2 设置x 和y 坐标 ......................................................................49
3.1.3 移到某个特定位置 ...................................................................49
3.2 限制角色移动范围 ...........................................................................51
3.2.1 利用x 和y 坐标 ......................................................................51
3.2.2 利用颜色（1） ........................................................................52
3.2.3 利用颜色（2） ........................................................................52
3.3 不断地移动 .......................................................................................53
3.3.1 在边缘的两端来回地移动 ......................................................53
3.3.2 在区域的两端来回地移动 ......................................................54
3.3.3 从一端消失再从另一端出现 ..................................................54
3.4 时间计算 ...........................................................................................55
3.4.1 计算游戏中花费的时间 ..........................................................55
3.4.2 倒数计时 ..................................................................................56
3.5 场景不断地往前移动 .......................................................................57
3.5.1 重复的场景 ..............................................................................57
3.5.2 连续的场景 ...............................................................................58
3.6 重力加速度 .......................................................................................60
3.6.1 自由落体 ..................................................................................60
3.6.2 抛物线 .......................................................................................61
第4 章 实战技能........................................................... 63
4.1 电流急急棒 .......................................................................................64
4.1.1 基本版 .......................................................................................64
4.1.2 多关版 .......................................................................................674.2 乒乓球 ...............................................................................................71
4.2.1 基本版 .......................................................................................71
4.2.2 打砖块 .......................................................................................73
4.3 迷宫寻宝 ...........................................................................................76
4.3.1 基本版 .......................................................................................76
4.3.2 寻宝版 .......................................................................................79
4.4 自由落体 ...........................................................................................85
4.4.1 打排球 .......................................................................................86
4.4.2 跳远 ...........................................................................................90
4.5 虫虫危机 ...........................................................................................94
4.6 青蛙过街 ...........................................................................................99
4.7 乐透彩开奖 .....................................................................................103
4.8 猴子吃香蕉 .....................................................................................106
4.9 翻牌 .................................................................................................112
4.10 星际大战 .......................................................................................122
4.11 射气球 ...........................................................................................135
4.12 贪食蛇 ...........................................................................................140
4.13 水果盘 ...........................................................................................144
第5 章 Arduino 互动科技项目....................................... 154
5.1 Arduino 简介 ..................................................................................155
5.2 安装S4A 步骤 ................................................................................156
5.2.1 安装软件程序 ........................................................................156
5.2.2 安装S4A 程序 .......................................................................162
5.3 使用S4A 操控LED 灯 ..................................................................163
5.3.1 硬件材料 ................................................................................164
5.3.2 连接方法 ................................................................................164
5.3.3 S4A 功能块 ............................................................................165
5.3.4 应用 ........................................................................................166
5.4 蜂鸣器 .............................................................................................167
5.4.1 硬件 ........................................................................................167
5.4.2 软件 ........................................................................................167
5.5 按钮 .................................................................................................168
5.5.1 硬件材料 ................................................................................168
5.5.2 硬件 ........................................................................................169
5.5.3 S4A 功能块 ............................................................................169
5.5.4 应用 ........................................................................................169
5.6 滑杆 .................................................................................................170
5.6.1 硬件材料 ................................................................................170
5.6.2 硬件 ........................................................................................171
5.6.3 S4A 功能块 ............................................................................171
5.6.4 应用 ........................................................................................171
5.7 光敏电阻 .........................................................................................173
5.7.1 硬件材料 ................................................................................173
5.7.2 硬件 ........................................................................................173
5.7.3 应用 ........................................................................................174
5.8 游戏杆 .............................................................................................175
5.8.1 硬件材料 ................................................................................175
5.8.2 硬件 ........................................................................................175
5.8.3 应用 ........................................................................................176
5.9 马达 .................................................................................................177
5.9.1 硬件材料 ................................................................................178
5.9.2 硬件 ........................................................................................178
5.9.3 S4A 功能块 ............................................................................179
5.9.4 应用 ........................................................................................179
5.10 无线传输 .......................................................................................179
5.10.1 硬件材料 ..............................................................................180
5.10.2 硬件 ......................................................................................181
5.11 机器车 ...........................................................................................181
5.11.1 硬件材料 ..............................................................................181
5.11.2 硬件 ......................................................................................182
5.11.3 使用箭头键控制机器车 ......................................................182
5.11.4 使用触须控制机器车 ..........................................................183
5.11.5 使用红外线控制机器车 ......................................................184
