Little turtle LOGO language features
1. Since the logo language is compiled by Flash, it has some characteristics of Flash and can run cross-platform or directly on the web page. No special installation is required. It can be practiced online at any time, which is very convenient, and can also be practiced on a stand-alone computer.
2. The software simulates most common commands, and the command words are abbreviated in the Logo language and do not support the full name of the command.
3. The software also adds some interesting commands, which can rotate the drawn graphics, and you can also drag the graphics back and forth to anywhere with the mouse.
4. The logo language can also simulate some commands of intelligent robots, and can realize obstacle collision detection, thereby realizing some interesting programs for robots to circumvent obstacles and recognize paths.
Little Turtle LOGO Language Installation Instructions
1. Download the Little Turtle LOGO language from Huajun Software Park and you will get a software compressed package.
2. Then we decompress the software compressed package and obtain the Flogo999.exe application.
3. Finally, we double-click to open the Flogo999.exe application and it can be used.
Little Turtle LOGO Language Operation Instructions
Quick menu
The system has 5 shortcut key menus, which are:
1. [Main Interface Menu]: Right-click on a blank space in the program interface to pop up this shortcut menu, which mainly includes:
1. Version number and QQ communication group number;
2. The display mode of the command box;
3. Set the currently drawn graphics as obstacles to facilitate the programming operation of the intelligent robot;
4.Technical support information.
2. [Turtle Menu]: Right-click on the current turtle to pop up the shortcut menu.
1. Change the size of the turtle, you can zoom in or out;
2. Rub the mouse wheel on the turtle to change the angle of the turtle.
When a detector is added to the turtle, 3 items will be added:
3. Add and delete detectors, you can add detectors or delete all detectors;
4. Show, transparent, and hide detectors. These three items are applied to all detectors of this turtle, not one of them;
5. Save the detector. This is very useful. You can easily record the position, direction, size and other parameters of the turtle's multiple detectors one by one into a subroutine, and add it to the end of the process editor so that you don't need it in the future. It’s very quick to add and adjust the detector again.
Note: Before saving the detector, please set the direction of the turtle to 0, which is upward.
3. [Detector Menu]: Right-click the mouse on the detector to pop up the shortcut menu.
1. Detector serial number;
2. Copy a detector with the same settings as the existing detector, and the number will automatically be the lowest unoccupied serial number;;
3. Change the size of the current detector;
4. Switch the display, transparency, and hidden status of the current detector.
5.Delete the current detector
6. You can use the mouse to change the parameters of the size, direction, and opening angle of the detector. The green dot on the detector can change the direction and size of the detector, and the yellow dot changes the opening angle of the detector. The opening angle should not be too large, preferably no more than 60 degrees, because the detection accuracy will be affected if it is too large.
4. [Graphic Menu]: Right-click on the drawn graph to pop up this shortcut menu:
1. The serial number of the graphic;
2. The graphics rotation command allows the graphics to rotate clockwise or counterclockwise with the starting point of the graphics as the center point. The further the horizontal distance (X-axis) between the mouse click and the rotation center point, the greater the rotation torque and the faster the rotation speed. ;
3. Delete the current graphic.
5. [Obstacle graphic menu]: Right-click on the obstacle special graphic to pop up this shortcut menu.
The serial number of the obstacle graphic;
Delete this obstacle graphic;
Obstacle graphics cannot be deleted using the [CS] and [Clean] commands, but can only be deleted in the shortcut menu;
The obstacle graphics cannot be rotated.
You can drag the mouse to change the position.
The obstacle graphics are generated by the Logo command, and then converted into obstacle graphics through the [Graphics Shortcut Menu] or [Command Line] or [Obstacle Button], and black outlines appear around the graphics.
The green graphics in the picture are obstacle graphics, and the red graphics are ordinary graphics.
Little turtle LOGO language shortcut keys
When the web page is online, you need to press the [Ctrl+Shift] keys + [Fn] at the same time for it to work.
There are 10 shortcut keys set in the system. They are:
【F1】: When the cursor stops in the command box or a command word in the process editor, press the F1 key to pop up the instructions for the command. Press the F1 key again to close the help window.
[F2]: Equivalent to the TS and FS commands, its function is to alternately display and hide the command box.
【F3】: Define the process in the current edit box.
【F4】: Open the music file selection dialog box and play the selected music, equivalent to the PLAY command.
【F5】: Equivalent to the LOAD command, its function is to open the file selection dialog box, select a LOGO file and open it, and add the file content to the process editor.
【F6】: Equivalent to the SAVE command, it is used to save the program in the process editor. It will automatically open the save file dialog box and select the save path.
【F7】: Equivalent to the LOADPIC command, its function is to open the file selection dialog box, select a picture file and open it, the picture will be displayed as the background.
【F8】: Equivalent to the SAVEPIC command, it is used to save all drawn graphics on the stage. The save file dialog box will automatically open and select the save path.
[F9]: Equivalent to the CT command, its function is to clear all characters in the command box.
【F12】: Equivalent to the EDITE command, its function is to open the process editor. After editing is completed, if you press the F12 key again, the process editor will automatically close.
Little Turtle LOGO Language Command Instructions
1. Instructions related to movement: "forward", "backward" and "return". The forward command can make the turtle move forward a certain number of units. For example: after executing the "FD (forward) 50" command, the little turtle will move forward 50 units; the backward command can make the little turtle move backward. If you execute the " BK (back) 50" command, then the direction of the little turtle will not change, but will go back 50 units; after executing the home command, regardless of the current position and direction of the little turtle, it will return to the drawing obediently in the center of the area and facing directly above the screen.
2. Instructions related to turning: "turn right" and "turn left". The right turn command allows the turtle to turn a certain angle to the right as required. For example: executing the "RT (turn right) 45" command will cause the turtle's orientation to turn 45 degrees to the right; while the left turn command will allow the turtle to turn 45 degrees to the right. The turtle turns to the left, such as: execute "LT The 45" command will cause the turtle to rotate 45 degrees to the left. These commands can drive the turtle to rotate around its center at a certain angle.
3. Control-related commands include REPEAT (repeat), IF...THEN...ELSE...(conditional execution), etc. For example, execute REPEAT 4[FORWARD 200 RlGHT 9O] can draw the square in Figure 2. If you directly combine the movement command and the turn command, you will write more statements, but they will all use "Forward 100" and "Right" 4 times repeatedly. 90” command.
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Huajun editor recommends:
Little turtle LOGO languageIt has a built-in turtle drawing system. By sending commands to the turtle, you can intuitively learn the running process of the program. The little turtle LOGO language can help you solve many problems. I believe that as long as you dare to use it, you will definitely not put it down.
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