Power-Programmierung/CD1.mdf/logo/labybug/demo5.bug

Text File | 1989-12-30 | 3KB | 198 lines

to "let's.explain
JE CURSOR 1 6
JP PR [Watch the next procedure. The]
JL JP PR [action is a bit different so]
JL JP PR [you can see how we "fake" the]
JL JP PR [appearance of four independent]
JL JP PR [turtles...]
WAIT 30 CS
end

to "start
JE CURSOR 1 6
JP PR [Why should LadyBug Logo have just]
JL JP PR [one turtle? Why not several?]
JL JL JL JP PR [While we can't call up others,]
JL JP PR [we can fake it...]
JL JL JL JP PR [Take a look.]
WAIT 20
CT JB
end

to "kaleidoscope
SET.UP
REPEAT 25 [DEMO]
end

to "demo
IF :STEP > 100 [MAKE "STEP 10]
MAKE "STEP :STEP + 5
MOVE
RT :ANGLE
IF OR :ANGLE > 45 :ANGLE < -45 [MAKE :ANGLE :ANGLE - ( :ANGLE * 2 ) ]
MAKE "ANGLE :ANGLE + 5
IF :C = 3 [MAKE "C 0]
MAKE "C :C + 1
SETPC :C
end

to "move
MAKE "X1 XCOR
MAKE "Y1 YCOR
FD :STEP
MAKE "X2 XCOR
MAKE "Y2 YCOR
PU SETXY :X1 - ( :X1 * 2 ) :Y1
PD SETXY :X2 - ( :X2 * 2 ) :Y2
PU SETXY :X1 - ( :X1 * 2 ) :Y1 - ( :y1 * 2 )
PD SETXY :X2 - ( :X2 * 2 ) :Y2 - ( :Y2 * 2 )
PU SETXY :X1 :Y1 - ( :Y1 * 2 )
PD SETXY :X2 :Y2 - ( :Y2 * 2 )
PU SETXY :X2 :Y2
PD
RT 15
end

to "set.up
MAKE "C 1
MAKE "STEP 20
MAKE "ANGLE 5 HT
end

to "turtles  :N :SIZE
SET.ZERO
SET.ONE
SET.TWO
SET.THREE
TURTLES.FOUR :N :SIZE
PR [WE NEVER SAID THEY WERE FAST.]
WAIT 10
CLEARWS
LOAD "DEMO5
START
end

to "turtles.four  :N :SIZE
IF :SIZE > :N [STOP]
PR [ASK 0 [RT 90 FD :SIZE]]
ASK 0 [RT 90 FD :SIZE]
PR [ASK 1 [RT 105 FD :SIZE]]
ASK 1 [RT 105 FD :SIZE]
PR [ASK 2 [RT 125 FD :SIZE]]
ASK 2 [RT 125 FD :SIZE]
PR [ASK 3 [RT 45 FD :SIZE]]
ASK 3 [RT 45 FD :SIZE]
PR [TURTLES.FOUR :N :SIZE + 20]
TURTLES.FOUR :N :SIZE + 20
end

to "ask  :TNUM :COMMAND.LIST
IF :TNUM = 0 [ZERO :COMMAND.LIST]
IF :TNUM = 1 [ONE :COMMAND.LIST]
IF :TNUM = 2 [TWO :COMMAND.LIST]
IF :TNUM = 3 [THREE :COMMAND.LIST]
end

to "set.zero
MAKE "OLDX0 XCOR
MAKE "OLDY0 YCOR
MAKE "OLDH0 HEADING
end

to "set.one
MAKE "OLDX1 XCOR
MAKE "OLDY1 YCOR
MAKE "OLDH1 HEADING
end

to "set.two
MAKE "OLDX2 XCOR
MAKE "OLDY2 YCOR
MAKE "OLDH2 HEADING
end

to "set.three
MAKE "OLDX3 XCOR
MAKE "OLDY3 YCOR
MAKE "OLDH3 HEADING
end

to "zero  :COMMAND.LIST
SETXY :OLDX0 :OLDY0 SETH :OLDH0
PD RUN :COMMAND.LIST PU
MAKE "OLDX0 XCOR
MAKE "OLDY0 YCOR
MAKE "OLDH0 HEADING
end

to "one  :COMMAND.LIST
SETXY :OLDX1 :OLDY1 SETH :OLDH1
PD RUN :COMMAND.LIST PU
MAKE "OLDX1 XCOR
MAKE "OLDY1 YCOR
MAKE "OLDH1 HEADING
end

to "two  :COMMAND.LIST
SETXY :OLDX2 :OLDY2 SETH :OLDH2
PD RUN :COMMAND.LIST PU
MAKE "OLDX2 XCOR
MAKE "OLDY2 YCOR
MAKE "OLDH2 HEADING
end

to "three  :COMMAND.LIST
SETXY :OLDX3 :OLDY3 SETH :OLDH3
PD RUN :COMMAND.LIST PU
MAKE "OLDX3 XCOR
MAKE "OLDY3 YCOR
MAKE "OLDH3 HEADING
end

to "and  :a :b
if :a = "true [output :b = "true]
output "false
end

to "or  :a :b
if :a = "true [output "true]
output :b = "true
end

to "jb
kaleidoscope
let's.explain
turtles 120 60
end

to "je
CLEARTEXT CURSOR 1 1
end

to "jc
BG 0 CS
end

to "jl
print "
end

to "jp
REPEAT 3 [JI]
end

to "ji
TYPE CHAR 32
end

to "wait  :t
if :t = 0 [stop]
make "t :t - 1
wait :t
end

to "pr  :LIST
PRINT :LIST
end