Karel Maze - by studentshowcase

Switch to Code View

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

Commands

Control flow

Functions

Conditions

Comments

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
for(var i = 0; i < 150; i++){    
    if(noBallsPresent()){    
        while(frontIsClear()){
            move();
            if(leftIsClear()){
                turnLeft();
            }
        }
        if(frontIsBlocked()){
            if(leftIsClear()){    
                turnLeft();
            }else{
                turnRight();
            }
        }
    }
}
takeBall();
turnEast();
//This code is simple, yet at the time I was proud. It teaches karel to follow left.
//also try bark(); on a blank world.
function flip(){
    turnLeft();
    move();
    turnLeft();
    turnLeft();
    move();
    turnLeft();
}
function turnRight(){
    turnLeft();
    turnLeft();
    turnLeft();
}
function bark(){
    turnLeft();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    putBall();
    move();
    turnRight();
    move();
    putBall();
    move();
    turnRight();
    move();
    putBall();
    turnLeft();
    move();
    putBall();
    turnLeft();
    move();
    turnRight();
    move();
    putBall();
    move();
    turnRight();
    move();
    putBall();
    turnLeft();
    turnLeft();
    move();
    move();
    putBall();
    turnLeft();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    turnRight();
    move();
    putBall();
    move();
    turnRight();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    turnRight();
    move();
    putBall();
    turnRight();
    move();
    move();
    turnRight();
    move();
    putBall();
    turnLeft();
    turnLeft();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    putBall();
    turnLeft();
    turnLeft();
    move();
    turnRight();
    move();
    turnRight();
    move();
    turnLeft();
    putBall();
    move();
    turnLeft();
    move();
    putBall();
    move();
    putBall();
    turnLeft();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    move();
    putBall();
    turnRight();
    move();
    move();
    putBall();
    turnRight();
    move();
    turnRight();
    move();
    putBall();
    turnLeft();
    move();
    putBall();
    move();
    turnLeft();
    move();
    putBall();
    turnRight();
    move();
    putBall();
    move();
    turnLeft();
}
function spin(){
    turnLeft();
    turnLeft();
    turnLeft();
    turnLeft();
}
function spin10(){
    spin();
    spin();
    spin();
    spin();
    spin();
    spin();
    spin();
    spin();
    spin();
    spin();
}
function spin100(){
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
    spin10();
}
function turnEast(){
    while(notFacingEast()){
        turnLeft();
    }
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Run! Reset

Errors:

Looks like something is taking longer than usual. We stopped running your code. Please try again.

HINT: You might have an infinite loop in your code.

Want more? See our full documentation!

Karel's Built in Commands

Commands

`move();` JavaScript		`turnLeft();` JavaScript
`putBall();` JavaScript		`takeBall();` JavaScript

Functions

Writing a Function

Writing a function is like teaching karel a new word.

Naming Functions: You can name your functions whatever you want, but you can't have spaces in the function name.

Remember that each open bracket { must match with a close bracket }

function turnRight() {
    turnLeft();
    turnLeft();
    turnLeft();
}

function turnAround() {
    turnLeft();
    turnLeft();
}

function yourFunctionName() {
  // Code that will run when you make a call to
  // this function.
}JavaScript

Conditional Statements

If Statements

Remember that each open bracket { must match with a close bracket }

if (condition) {
  // code that will run if the condition is true
}JavaScript

if (condition) {
  // code that will run if the condition is true
} else {
  // code that will run if condition is not true
}JavaScript

Example of if statements

if (frontIsClear()) {
    move();
}

if (ballsPresent()) {
    takeBall();
} else {
    move();
}JavaScript

Karel Conditions

Don't forget the () at the end

frontIsClear()
leftIsClear()
rightIsClear()

facingNorth()
facingSouth()
facingEast()
facingWest()

ballsPresent()
            JavaScript

frontIsBlocked()
leftIsBlocked()
rightIsBlocked()

notFacingNorth()
notFacingSouth()
notFacingEast()
notFacingWest()

noBallsPresent()
            JavaScript

Loops

Remember that each open bracket { must match with a close bracket }

While Loops

while (CONDITION) {
  // Code that will run while the CONDITION is true.
  // Once the CONDITION is no longer true,
  // it will stop.
}JavaScript

Example of while loops

/* This moves Karel to a wall */
while (frontIsClear()) {
    move();
}JavaScript

For Loops

Note: you can use both "let" and "var" in your for loops (they are two types of JavaScript variables). Use whichever you have been taught in your course.

for (let i = 0; i < COUNT; i++) {
  // Code that will run 'COUNT' times
}

// Can also use "var" to define the "i" (depends on your course)
for (var i = 0; i < COUNT; i++) {
  // Code that will run 'COUNT' times
}JavaScript

Example of for loops

/* This puts down 10 balls */
for (let i = 0; i < 10; i++) {
    putBall();
}

// Or, if your course teaches "var":
for (var i = 0; i < 10; i++) {
    putBall();
}JavaScript

You can have multiple statements or function calls in a for loop.

/* This puts down five balls and moves after each one */
for (let i = 0; i < 5; i++) {
    putBall();
    move();
}

// Or, if your course teaches "var":
for (var i = 0; i < 5; i++) {
    putBall();
    move();
}JavaScript

Use for-loops when you want to repeat something a fixed number of times.

Use while-loops when you want to repeat something as long as a condition is true.

Comments

/* A multi-line comment describes your code
 * to someone who is reading it. */

// Use single line comments to clarify code.JavaScript

Slides and Notes

No slides available for this video

Import Code from Assignment

Assignment

Collaborate on this sandbox program!

Admin Only. Not visible to customers

A collaborative program is a program you can work on with a partner or group of people. The program shows up in all of your sandbox pages, and when any of you save code, it will save it for each person.

Current Collaborators:

Add a Collaborator:

Add

Embed Your Code On an HTML Page

Want to use your CodeHS code outside of CodeHS? Use this embed code to get started.

How to Use

Version 1: On Your Computer

Create a file called codehs.html on your desktop
Put the html below into the codehs.html file and save it
Now double click the file to open it in a web browser

Version 2: Online

Create a file called codehs.html on your desktop
Put the html below into the codehs.html file and save it
Upload this file to the internet
Visit your web page

Note this only works on single files currently.

Download your Code

Download Code as Zip File
Download Code as a .txt File

About

Karel (JavaScript)

Author

Student Showcase

Forked from

Sample Karel Program

By: Logan M.

Autograder Results

Your Output

Solution Output

Errors:

Karel's Built in Commands

Commands

Functions

Writing a Function

Conditional Statements

If Statements

Example of if statements

Karel Conditions

Loops

While Loops

Example of while loops

For Loops

Example of for loops

Comments

Comments

Slides and Notes

Import Code from Assignment

Collaborate on this sandbox program!

Embed Your Code On an HTML Page

How to Use

Version 1: On Your Computer

Version 2: Online

Note this only works on single files currently.

Download your Code

About

Author

Forked from

Products

Computer Science Curriculum

Customizable K-12 Computer Science Curriculum

Error: Line -1

Autograder Results

Your Output

Solution Output

Errors:

Karel's Built in Commands

Commands

Functions

Writing a Function

Conditional Statements

If Statements

Example of if statements

Karel Conditions

Loops

While Loops

Example of while loops

For Loops

Example of for loops

Comments

Comments

Upload an image

Upload from your computer

Or paste a link here

Slides and Notes

Import Code from Assignment

Collaborate on this sandbox program!

Embed Your Code On an HTML Page

How to Use

Version 1: On Your Computer

Version 2: Online

Note this only works on single files currently.

Download your Code

About

Author

Forked from