​

// MOVE FORWARD
FD 75
// TURN RIGHT
RT 54
// TURN LEFT
LT 21
// MOVE BACKWARD
BK 17

查看此处找到的其他一些海龟命令…

海龟命令

• BACK ## [BK]- 将Turtle移回

• BACKGROUND ## [BG]- 设置背景颜色（0-15）

  • 0 - 黑色
  • 1 - 白色
  • 2 - 红色
  • 3 - 青色
  • 4 - 紫色
  • 5 - 绿色
  • 6 - 蓝色
  • 7 - 黄色
  • 8 - 橙色
  • 9 - 棕色
  • 10 - 浅红色
  • 11 - 灰色 1
  • 12 - 灰色 2
  • 13 - 浅绿色
  • 14 - 浅蓝色
  • 15 - 灰色 3
  • CLEARSCREEN [CS] - Clear Screen without moving turtle
  • DRAW - Clear Screen and take turtle home
  • EACH - Tell several sprites, whose numbers are in a list, to accept commands in a second list, e.g. EACH [1 2] [SQUARE 10]
  • FORWARD ## [FD] - Move turtle forward
  • FULLSCREEN - Full graphics screen (same as pressing F5)
  • HEADING - Output turtle heading as a number (0-359)
  • HIDETURTLE [HT] - Make turtle invisible
  • HOME - Move turtle to center of screen pointing up
  • LEFT [LT] - Turn turtle left
  • NODRAW [ND] - Enter text mode with clear screen
  • NOWRAP - Prevent drawings from wrapping around screen
  • PENCOLOR [PC] - Change pen color
  • PENDOWN [PD] - Turtle leaves trail
  • PENUP [PU] - Turtle ceases to leave trail
  • RIGHT ## [RT] - Turn turtle right
  • SETHEADING [SETH] - Set turtle heading, e.g. SETH 180
  • SETSHAPE - Set the current sprite shape (0-7)
  • SETX Move the turtle to the specified x co-ordinates e.g. SETX 50
  • SETXY Move the turtle to the specified x, y co-ordinates Eg. SETXY 50 50
  • SETY Move the turtle to the specified y co-ordinate, e.g. SETY 50
  • SHAPE - Output number of current sprite’s shape
  • SHOWTURTLE [ST] - Make turtle visible
  • SPLITSCREEN - Mixed graphics and text screen (same as pressing F3)
  • STAMPCHAR - Make the turtle stamp a character at the current location, e.g. STAMPCHAR "A
  • TELL - Tell designated sprite to receive commands, e.g. TELL 2
  • TEXTSCREEN - Use whole screen for text (same as pressing F1)
  • TOWARDS - Output heading for turtle to face an X,Y coordinate, e.g. TOWARDS 0 0
  • WRAP - Make turtle drawings wrap around the screen
  • XCOR - Output current x co-ordinate of turtle
  • YCOR - Output current y co-ordinate of turtle
  • ASPECT - Set verticle screen scale factor, default is 0.76

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