Draw a forest

Subject: Draw a forest Fri Oct 18, 2013 12:37 pm

Hello everybody.

Here is a small code to draw a forest.
Good entertainment!

Code:: ' *********************************
' * *
' * FOREST.BAS BY PAPYDALL
' ** English version
' * *
' *********************************
init()
sun(xsun%,ysun%,rsun%)
go()
end
' ******************************************************************************

SUB init()
   dim ss% : ss% = 20
   dim sang,sang1(ss%),xx(ss%),yy(ss%)
   dim rad : rad = 3.141592653579793/180
   dim compteur% : compteur% = 0
   dim xpos%,ypos% : xpos% = 320 : ypos% = 500
   dim xp,yp,xp1,yp1,x,y,x1,y1,ran1,ran2,s2,zx,zy
   dim a$,a0$,a1$,b$,st,gen%,k%,s,ang,ang1,an,j%,cl,i%
   dim xsun%,ysun%, rsun% : xsun% = int(rnd(800)+100) : ysun% = 50 : rsun% = 20
   dim titre$ : titre$ = " *** <CLICK> TO STOP"
   titre$ = titre$ + " *** BUT YOU WILL LOSE NOTHING IF YOU WAIT A FEW MINUTES !!!"
   width 0,1000 : height 0, 700 : color 0,10,100,150 : cls

END_SUB
' ******************************************************************************
SUB sun(x%,y%,r%)
   2d_circle x%,y%,r% : 2d_flood x%,y%,255,255,0
END_SUB
' ******************************************************************************

SUB go()
   dim_local cr%,cv%,cb%, exit%
   exit%=0
   repeat
   cr% = int(rnd(160)) : cv% = int(rnd(140)) : cb%=int(rnd(255))
   xpos% = int(rnd(800) +100)
   B$ = "" : A$ = "" : A0$ = "" : A1$ = ""
   st = 0 : gen% = mod(compteur%,13)+1 : compteur% = compteur% + 1
   caption 0,"FOREST BY PAPYDALL : NUMBER OF DRAWN PLANTATIONS : " + str$(compteur%) + string$(5," ") + titre$
   select gen%
   case 1
   k% = 6 : s = 1.5 : ang1 = int(rnd(80)+8 )
   A$ = "0" : A1$ = "11" : A0$ = "1##10!+0!-0"
   case 2
   k% = 5 : s = 3 : ang1 = int(rnd(20)+16)
   A$ = "1" : A1$ = "11-#-1+0+0!+#+1-0-0!" : A0$ = "0"
   case 3
   k% = 6 : s = 1.5 : ang1 = int(rnd(45)+8 )
   A$ = "0" : A1$ = "11" : A0$ = "1#+0!1#-0!0"
   case 4
   k% = 5 : s = 3 : ang1 = int(rnd(10)+10)
   A$ = "1" : A1$ = "1#+0!#=0!1#+1+-0!#-1-+0!" : A0$ = "0-0++0"
   case 5
   k% = 5 : s = 3 : ang1 = int(rnd(16)+16)
   A$ = "1" : A1$ = "11-#-1+0+0!+#+1-0-0!" : A0$ = "#0-0++0!"
   case 6
   k% = 4 : s = 2.5 : ang1 = int(rnd(10)+10)
   A$ = "1" : A1$ = "1#+10!1#-10!1" : A0$ = "#0-0++0!"
   case 7
   k% = 4 : s = 1.75 : ang1 = int(rnd(30)+10)
   A$ = "1" : A1$ = "1#+1-10!1#-1+10!10" : A0$ = "#0-0++0!"
   case 8
   k% = 4 : s = 3 : ang1 = int(rnd(15)+10)
   A$ = "1" : A1$ = "11#+1-1+10!#-1+1-10!" : A0$ = "#0-0++0!"
   case 9
   k% = 4 : s = 3.5 : ang1 = 10
   A$ = "1" : A1$ = "11#+1+1-#0-0++0!!0#-1-1+#0-0++0!!" : A0$ = "#0-0++0!"
   case 10
   k% = 4 : s = 3.6 : ang1 = int(rnd(5)+10)
   A$ = "#+1-1!#-1+1!" : A1$ = "1#-1+0!1#+1-0!0" : A0$ = "#0-0++0!"
   case 11
   k% = 3 : s = 2.75 : ang1 = int(rnd(3)+8 )
   A$ = "1" : A1$ = "11#+10-10+10-10!1#-10+10-10+10!0" : A0$ = "0"
   case 12
   k% = 3 : s = 4 : ang1 = int(rnd(60)+20)
   A$ = "1" : A1$ = "1#-10-10-10!1#+10+10+10!1#10!" : A0$ = "0"
   case 13
   k% = 4 : s = 2 : ang1 = int(rnd(8 )+10)
   A$ = "0" : A1$ = "111" : A0$ = "11#+0!#++0!#+++0!#-0!#--0!#---0!0"
   end_select

   for j% = 1 to k%
   cl = len(A$)
   for i% = 1 to cl
   if mid$(A$,i%,1) = "1"
   B$ = B$ + A1$
   else
   if mid$(A$,i%,1)="0"
   B$ = B$ + A0$
   else
   B$ = B$ + mid$(A$,i%,1)
   end_if
   end_if
   next i%
   A$ = B$ : B$ = ""
   ang = 360.0/ang1 : x = 0 : y = 0 : an = 0 : cl = len(A$)
   for i% = 1 to cl
   if mid$(A$,i%,1) = "1"
   ran1 = rnd(1) : ran2 = rnd(1) : s2 = s + 0.5 *(ran1-ran2)* s
   ran1 = rnd(1) : ran2 = rnd(1) : an = an + 5.0 *(ran1-ran2)
   sang = an : x1 = s2 * sin(an*rad)+ x : y1 = s2 * cos(an*rad)+ y
   xp = 2 * x + xpos% : yp = ypos% - 2 * y
   xp1 = 2 * x1 + xpos% : yp1 = ypos% - 2 * y1
   2d_pen_color 0,90+cv%,0 : 2d_line xp,yp , xp1,yp1
   x = x1 : y = y1
   else
   if mid$(A$,i%,1) = "0"
   zx = sin(an*rad): zy = cos(an*rad)
   x1 = zx * s + x : y1 = zy * s + y
   xp = 2 * x + xpos% : yp = ypos% - 2 * y
   xp1 = 2 * x1 + xpos% : yp1 = ypos% - 2 * y1
   2d_pen_color 90+cr%,65 + cv%,cb% : 2d_line xp,yp , xp1,yp1
   x1 = 0.25 * zx * s + x : y1 = 0.25 * zy * s + y
   xp1 = 2 * x1 + xpos% : yp1 = ypos% - 2 * y1
   2d_pen_color 255,0,0 : 2d_line xp,yp , xp1,yp1
   else
   if mid$(A$,i%,1) = "-"
   ran1 = rnd(1) : ran2 = rnd(1)
   an = an - ang - 10 *(ran1-ran2) : sang = an
   else
   if mid$(A$,i%,1)="+"
   ran1 = rnd(1) : ran2 = rnd(1)
   an = an + ang + 10 *(ran1-ran2) : sang=an
   else
   if mid$(A$,i%,1)="#"
   st = st + 1 : sang1(st) = sang
   xx(st) = x : yy(st) = y
   else
   if mid$(A$,i%,1)="!"
   x = xx(st) : y = yy(st)
   an = sang1(st) : sang = an : st = st-1
   end_if
   end_if
   end_if
   end_if
   end_if
   end_if
   if scancode<>0 then exit% = 1: exit_for
   next i%
   if exit%=1 then exit_for
   next j%
   until exit% = 1
END_SUB
' **************** E N D ***************

Number of posts : 1 Registration date : 2013-10-19

Papydall, I've just discovered your program on the british forum, that's beautiful, looks like fern. I'm still learning programmation with your exercises. I do like your style, leading us to further questions and trials. See you back on the french side, bye !

Subject: Re: Draw a forest Sat Oct 19, 2013 7:54 pm

Thank you Froggy One.
This program was already posted on the French forum for some time.

» Panoramic Draw
» to write or draw with the mouse