Welcome to project KLogo-Turtle
The KLogo-Turtle is a interpreter of the LOGO language for KDE desktops.
The KLogo-Turtle is a useful tool for teaching geometry and principles basics of the programming of computer. Childrens can to study mathematic of mode grasping and constructive.
KLogo-Turtle have syntax a little different of LOGO language developed in MIT, look the documents link. Doubts and suggestions use e-mail link.
KLogo-Turtle support commands in the several languages.
KLogo-Turtle is under license GPL and it developed in KDevelop by Euclides Chuma.
Any tips:
Use one command in each line.
The draw area of the KLogo-Turtle is 590 x 400 steps.
The variables names are not sensitive case.
The numbers are integers positives.
The commands of the KLogo-Turtle:
FORWARD
Move to forward producing a line.
- Format
- FORWARD ?? (?? is the quantity of steps)
- Example
- FORWARD 50
BACKWARD
Move to backward producing a line.
- Format
- BACKWARD ?? (?? is the quantity of steps)
- Example
- BACKWARD 50
LEFT
Rotate to left changing the direction.
- Format
- LEFT ?? (?? is the quantity of degrees)
- Example
- LEFT 90
RIGHT
Rotate to right changing the direction.
- Format
- RIGHT ?? (?? is the quantity of degrees)
- Example
- RIGHT 90
SETX
Move to position of the axis X.
- Format
- SETX ?? (?? is the position)
- Example
- SETX 100
SETY
Move to position of the axis Y.
- Format
- SETY ?? (?? is the position)
- Example
- SETY 100
PENDOWN
Down the pen drawing into screen.
- Format
- PENDOWN
- Example
- PENDOWN
PENUP
Up the pen not drawing into screen.
- Format
- PENUP
- Example
- PENUP
PENCOLOR
Change the pen color. Color might to be Green, Red, Blue, Black, Yellow, Gray, Darkblue, Darkgreen, Darkred, Darkyellow.
- Format
- PENCOLOR ?? (?? is the color)
- Example
- PENCOLOR RED
CLEAR
Clear the screen.
- Format
- CLEAR
- Example
- CLEAR
HOME
Move to center position.
- Format
- HOME
- Example
- HOME
HIDE
Hide cursor.
- Format
- HIDE
- Example
- HIDE
SHOW
Show cusor.
- Format
- SHOW
- Example
- SHOW
NEW
Start a new drawing.
- Format
- NEW
- Example
- NEW
MAKE
Define a variable with a integer number.
- Format
- MAKE name = ?? (?? is a integer number)
Example (define variable TEST with 100): MAKE TEST = 100
CONTENT
Show the content of the variable.
- Format
- CONTENT variable
- Example
- CONTENT TEST
SUM
Sum two integers positive and put result into a variable.
- Format
- SUM variable = ?? + ?? (?? is a integer number)
- Example
- SUM TEST = 10 + 20
SUBTRACT
Subtract two integers positive and put result into a variable.
- Format
- SUBTRACT variable = ?? - ?? (?? is a integer number)
- Example
- SUBTRACT TEST = 30 - 10
MULTIPLY
Multiply two integers positive and put result into a variable.
- Format
- MULTIPLY variable = ?? * ?? (?? is a integer number)
- Example
- MULTIPLY TEST = 20 * 20
DIVIDE
Divide two integers positive and put result into a variable.
- Format
- DIVIDE variable = ?? / ?? (?? is a integer number)
- Example
- DIVIDE TEST = 30 / 5
REMAINDER
Divide two integers positive and put remainder into a variable.
- Format
- REMAINDER variable = ?? / ?? (?? is a integer number)
- Example
- REMAINDER TEST = 50 / 6
REPEAT
Repeat several times a set of commands.
- Format
- REPEAT ?? (?? is the quantity of times) commands END REPEAT
Example (draw a square):
REPEAT 4
FORWARD 50
LEFT 90
END REPEAT
TO
Define a set of commands with single name.
- Format
- TO name commands END TO
Example (define a square and draw it):
TO SQUARE
FORWARD 50
LEFT 90
FORWARD 50
LEFT 90
FORWARD 50
LEFT 90
FORWARD 50
LEFT 90
END TO
SQUARE
IF
Execute the commands if condition is true.
Format (=, <, >, !):
IF ?? = ?? (?? is integer number)
commands
END IF
Example (draw a line):
IF 10 < 100
FORWARD 50
END IF