can somone explane functions? - GameCreators Forum

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Blazer

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Joined: 22nd Oct 2002

Location: United States

Posted: 17th Feb 2003 05:56

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my code is looking really messy, i think I could clean it up a bit If I stuck in a few functions, can somone explain how these work? do they need to be in the loop? ect...

As I walk through the vally of the shadow of death, I will fear no evil.
- Psalms 23:4

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Shadow

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Joined: 17th Oct 2002

Location: In the shadows

Posted: 17th Feb 2003 13:10

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Declare functions at the bottom of your code (not inside loop).

A function can be made to perform a task or return data (or both).

e.g.

+ Code Snippet

sync on:sync rate 60
a$="you haven't clicked yet"

do
cls
if cb(100,100,200,120) then a$="You clicked"

text 1,1,a$

sync
loop

function cb(x0,y0,x1,y1)
     box x0,y0,x1,y1
     if mousex()=>x0 and mousex()<=x1 and mousey()=>y0 and mousey()<=y1 and mouseclick()=1
          click=1
      else
         click=0
      endif
endfunction click

that should work

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xmen

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Joined: 27th Jan 2003

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Posted: 17th Feb 2003 22:33

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try this example hope it helps

`..................Drawing.............

`------------------------------------------------------
`
`
`--------------------BY XMEN---------------------------
`						FUNCTION EXAMPLE
`
`------------------------------------------------------
set display mode 800,600,16

dim colorit(1)
dim Clicked(1)
dim tool$(6)

tool$(1)="Box"
tool$(2)="Circle" 
tool$(3)="Ellipse"
tool$(4)="Line" 
tool$(5)="Bar" 
tool$(6)="color"

sync on
create bitmap 1,bitmap width(0),bitmap height(0)

set current bitmap 0
colorit(1)=255

do

zone(1,9,10,"Box")
zone(2,42,10,"Circle") 
zone(3,86,10,"Ellipse")
zone(4,137,10,"Line") 
zone(5,171,10,"Bar") 
zone(6,200,10,"color")

ink rgb(rgbr(colorit(1)),rgbg(colorit(1)),rgbb(colorit(1))),1

box 430,10,500,30
ink rgb(255,255,255),1
text 370,10,"USEING....... "+tool$(Clicked(0))

ink rgb(rgbr(colorit(1)),rgbg(colorit(1)),rgbb(colorit(1))),1

x=mousex():y=mousey()

if y>30
if  Clicked(1)=1 and mouseclick()=1

box(x,y)
endif

if  Clicked(1)=2 and mouseclick()=1

Circle(x,y)
endif

if  Clicked(1)=3 and mouseclick()=1
Ellipse(x,y)
endif

if  Clicked(1)=4 and mouseclick()=1
Line(x,y)
endif

if  Clicked(1)=5 and mouseclick()=1
Bar(x,y)
endif

endif
if  Clicked(1)=6 and mouseclick()=1

color
Clicked(1)=Clicked(0)
endif

sync
loop

`................................DRAW...EMPTY..BOX......................

FUNCTION BOX(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()
line x,y,x2,y
line x,y,x,y2
line x2,y,x2,y2
line x,y2,x2,y2
sync
until mouseclick()=0

copy bitmap 0,1

ENDFUNCTION

`................................DRAW.....CIRCLE.....................

FUNCTION CIRCLE(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

CIRCLE x,y2,x2/3
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION

`................................DRAW.....ELLIPSE.....................

FUNCTION ELLIPSE(x,y)
repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

ELLIPSE X,Y,X2/3,Y2/3
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION
`................................DRAW..LINE...........................

FUNCTION LINE(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

LINE x,y,x2,y2
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION

`.................................DRAW....BAR........................

FUNCTION BAR(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

BOX x,y,x2,y2
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION

`........................................COLOUR...................
FUNCTION COLOR()
ok=0
ink rgb(170,170,140),1
box 200,90,503,300
ink rgb(140,140,50),1
box 201,91,502,299

ink rgb(255,255,255),1

box 221,110,481,130

box 221,150,481,170

box 221,190,481,210

`............min...............

box 205,115,216,126

box 205,155,216,166

box 205,195,216,206

`............max..........

box 486,115,498,126

box 486,155,498,166

box 486,195,498,206

ink rgb(0,0,0),1

text 210,113,"-"

text 210,153,"-"

text 210,193,"-"

text 489,113,"+"

text 489,153,"+"

text 489,193,"+"

ink rgb(255,0,0),1:text 330,92,"Red"

ink rgb(0,255,0),1:text 327,132,"Green"

ink rgb(0,0,255),1:text 331,173,"Blue"

ink rgb(0,0,255),1:text 331,278,"Use"

ink rgb(0,0,0),1

ink rgb(0,0,0),1
box 291,214,391,271

repeat

ink rgb(0,0,0),1

box 222,111,480,129

box 222,151,480,169

box 222,191,480,209
mx=mousex()
my=mousey()

if mouseclick()=1 and mx>=331 and mx<=331+text width("Use") and my>=278 and my<=278+text height("Use")
text 331,278,".Use.."+str$(ok)
ok=1
colorit(1)=point(mx,my-50)

sync

copy bitmap 1,0
exitFunction

endif

`.................................Min..........
if mouseclick()=1 and mx>=205 and mx<=216 and my>=115 and my<=126 and red>0
red=red-1
endif

if mouseclick()=1 and mx>=205 and mx<=216 and my>=155 and my<=166 and green>0
green=green-1
endif

if mouseclick()=1 and mx>=205 and mx<=216 and my>=195 and my<=206 and blue>0
blue=blue-1
endif

`.................................Max..........
if mouseclick()=1 and mx>=486 and mx<=498 and my>=115 and my<=126 and red<255
red=red+1
endif

if mouseclick()=1 and mx>=486 and mx<=498 and my>=155 and my<=166 and green<255
green=green+1
endif

if mouseclick()=1 and mx>=486 and mx<=498 and my>=195 and my<=206 and blue<255
blue=blue+1
endif

ink rgb(red,green,blue),1

box 292,215,390,270

if red>0
ink rgb(red,0,0),1
box 223,112,223+red,129
endif

if green>0
ink rgb(0,green,0),1
box 223,152,223+green,169
endif

if blue>0
ink rgb(0,0,blue),1
box 223,192,223+blue,208
endif

ink rgb(255,255,255),1:

text 340,113,str$(red)
text 340,153,str$(green)
text 340,193,str$(blue)
sync 
until ok=1
copy bitmap 1,0
ENDFUNCTION

`........................................MOUSE ZONE..............

FUNCTION ZONE(zonenum,x1,y1,zone$)

if zonenum<6 then ops=zonenum
backdrop off
sync rate 1000
ink rgb(120,120,120),1
box x1,y1,x1+text width(zone$)+4,y1+text height(zone$)+5

ink rgb(190,190,190),1
box x1+1,y1+1,x1+text width(zone$)+3,y1+text height(zone$)+4

ink rgb(0,0,0),1
text x1+3,y1+2,zone$
ink rgb(190,190,190),1

clicked=0
	if mousex()>x1 and mousex()<x1+text width(zone$)+5
		if mousey()>y1 and mousey()<y1+text height(zone$)+5
			if mouseclick()=1

clicked=zonenum

Clicked(1)=zonenum
if zonenum<6 then Clicked(0)=zonenum
ink rgb(160,160,160),1
box x1+2,y1+2,x1+text width(zone$)+2,y1+text height(zone$)+3

ink rgb(115,115,115),1
line x1+2,y1+1,x1+text width(zone$)+2,y1+1
line x1+text width(zone$)+3,y1+1,x1+text width(zone$)+3,y1+text height(zone$)+3

ink rgb(0,0,0),1
text x1+3,y1+2,zone$
ink rgb(190,190,190),1

endif
		endif
	endif

ENDFUNCTION

+ Code Snippet


`------------------------------------------------------
`
`
`--------------------BY XMEN---------------------------
`						FUNCTION EXAMPLE
`
`------------------------------------------------------
set display mode 800,600,16

dim colorit(1)
dim Clicked(1)
dim tool$(6)

tool$(1)="Box"
tool$(2)="Circle" 
tool$(3)="Ellipse"
tool$(4)="Line" 
tool$(5)="Bar" 
tool$(6)="color" 

sync on
create bitmap 1,bitmap width(0),bitmap height(0)

set current bitmap 0
colorit(1)=255

do

zone(1,9,10,"Box")
zone(2,42,10,"Circle") 
zone(3,86,10,"Ellipse")
zone(4,137,10,"Line") 
zone(5,171,10,"Bar") 
zone(6,200,10,"color") 



ink rgb(rgbr(colorit(1)),rgbg(colorit(1)),rgbb(colorit(1))),1

box 430,10,500,30
ink rgb(255,255,255),1
text 370,10,"USEING....... "+tool$(Clicked(0))

ink rgb(rgbr(colorit(1)),rgbg(colorit(1)),rgbb(colorit(1))),1

x=mousex():y=mousey()

if y>30
if  Clicked(1)=1 and mouseclick()=1

box(x,y)
endif

if  Clicked(1)=2 and mouseclick()=1

Circle(x,y)
endif

if  Clicked(1)=3 and mouseclick()=1
Ellipse(x,y)
endif

if  Clicked(1)=4 and mouseclick()=1
Line(x,y)
endif

if  Clicked(1)=5 and mouseclick()=1
Bar(x,y)
endif

endif
if  Clicked(1)=6 and mouseclick()=1

color
Clicked(1)=Clicked(0)
endif



sync
loop

`................................DRAW...EMPTY..BOX......................

FUNCTION BOX(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()
line x,y,x2,y
line x,y,x,y2
line x2,y,x2,y2
line x,y2,x2,y2
sync
until mouseclick()=0

copy bitmap 0,1

ENDFUNCTION

`................................DRAW.....CIRCLE.....................


FUNCTION CIRCLE(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

CIRCLE x,y2,x2/3
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION

`................................DRAW.....ELLIPSE.....................

FUNCTION ELLIPSE(x,y)
repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

ELLIPSE X,Y,X2/3,Y2/3
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION
`................................DRAW..LINE...........................

FUNCTION LINE(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

LINE x,y,x2,y2
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION

`.................................DRAW....BAR........................

FUNCTION BAR(x,y)

repeat
copy bitmap 1,0

x2=mousex():y2=mousey()

BOX x,y,x2,y2
sync
until mouseclick()=0
copy bitmap 0,1

ENDFUNCTION


`........................................COLOUR...................
FUNCTION COLOR()
ok=0
ink rgb(170,170,140),1
box 200,90,503,300
ink rgb(140,140,50),1
box 201,91,502,299

ink rgb(255,255,255),1

box 221,110,481,130

box 221,150,481,170

box 221,190,481,210

`............min...............

box 205,115,216,126

box 205,155,216,166

box 205,195,216,206

`............max..........

box 486,115,498,126

box 486,155,498,166

box 486,195,498,206


ink rgb(0,0,0),1

text 210,113,"-"

text 210,153,"-"

text 210,193,"-"

text 489,113,"+"

text 489,153,"+"

text 489,193,"+"


ink rgb(255,0,0),1:text 330,92,"Red"

ink rgb(0,255,0),1:text 327,132,"Green"

ink rgb(0,0,255),1:text 331,173,"Blue"


ink rgb(0,0,255),1:text 331,278,"Use"

ink rgb(0,0,0),1

ink rgb(0,0,0),1
box 291,214,391,271


repeat


ink rgb(0,0,0),1

box 222,111,480,129

box 222,151,480,169

box 222,191,480,209
mx=mousex()
my=mousey()

if mouseclick()=1 and mx>=331 and mx<=331+text width("Use") and my>=278 and my<=278+text height("Use")
text 331,278,".Use.."+str$(ok)
ok=1
colorit(1)=point(mx,my-50)

sync

copy bitmap 1,0
exitFunction

endif

`.................................Min..........
if mouseclick()=1 and mx>=205 and mx<=216 and my>=115 and my<=126 and red>0
red=red-1
endif

if mouseclick()=1 and mx>=205 and mx<=216 and my>=155 and my<=166 and green>0
green=green-1
endif

if mouseclick()=1 and mx>=205 and mx<=216 and my>=195 and my<=206 and blue>0
blue=blue-1
endif



`.................................Max..........
if mouseclick()=1 and mx>=486 and mx<=498 and my>=115 and my<=126 and red<255
red=red+1
endif

if mouseclick()=1 and mx>=486 and mx<=498 and my>=155 and my<=166 and green<255
green=green+1
endif

if mouseclick()=1 and mx>=486 and mx<=498 and my>=195 and my<=206 and blue<255
blue=blue+1
endif

ink rgb(red,green,blue),1

box 292,215,390,270

if red>0
ink rgb(red,0,0),1
box 223,112,223+red,129
endif

if green>0
ink rgb(0,green,0),1
box 223,152,223+green,169
endif

if blue>0
ink rgb(0,0,blue),1
box 223,192,223+blue,208
endif

ink rgb(255,255,255),1:

text 340,113,str$(red)
text 340,153,str$(green)
text 340,193,str$(blue)
sync 
until ok=1
copy bitmap 1,0
ENDFUNCTION


`........................................MOUSE ZONE..............

FUNCTION ZONE(zonenum,x1,y1,zone$)

if zonenum<6 then ops=zonenum
backdrop off
sync rate 1000
ink rgb(120,120,120),1
box x1,y1,x1+text width(zone$)+4,y1+text height(zone$)+5

ink rgb(190,190,190),1
box x1+1,y1+1,x1+text width(zone$)+3,y1+text height(zone$)+4

ink rgb(0,0,0),1
text x1+3,y1+2,zone$
ink rgb(190,190,190),1

	clicked=0
	if mousex()>x1 and mousex()<x1+text width(zone$)+5
		if mousey()>y1 and mousey()<y1+text height(zone$)+5
			if mouseclick()=1

			clicked=zonenum


Clicked(1)=zonenum
if zonenum<6 then Clicked(0)=zonenum
ink rgb(160,160,160),1
box x1+2,y1+2,x1+text width(zone$)+2,y1+text height(zone$)+3

ink rgb(115,115,115),1
line x1+2,y1+1,x1+text width(zone$)+2,y1+1
line x1+text width(zone$)+3,y1+1,x1+text width(zone$)+3,y1+text height(zone$)+3


ink rgb(0,0,0),1
text x1+3,y1+2,zone$
ink rgb(190,190,190),1

			endif
		endif
	endif

ENDFUNCTION

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Morales

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Joined: 9th Feb 2003

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Posted: 17th Feb 2003 22:41

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sync on : sync rate 40
do

x=x+1
z=z-1

re(x,z)

sync
loop
`the re(n,p) could be any word you just give it name
function re(n,p)
set cursor 0,0
print n
print p
endfunction re(n,p)

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Morales

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Posted: 17th Feb 2003 22:43

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pleas tell me if it helped you

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PiratSS

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Joined: 18th Oct 2002

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Posted: 17th Feb 2003 23:07

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Ok, I will take the time to write u some explanation

Let's say you are writing a program for IBM. They want you to print out any message if you hold any key.

Now you think, ok, it would be pretty easy if i do this:

sync on

+ Code Snippet

do
if inkey$()<>"" then cls:set cursor 10,10:print "MY 1st Message!!!"
loop 
sync

but that's too messy.

Here come functions! And we are going to make our own function that will work 100% like "text X,Y,string$"

we start off by declaring a function:

Function text2(X,Y,string$)

that is great! but what does it do?

well, nothing rightnow, not until we complete it.

you final function will look like this:

Function text2(X,Y,string$)
set cursor X,Y,String$
endfunction

now to quickly explain:

this function works just like a text command. In fact, we will have a text vs out text2

try this code:

+ Code Snippet

sync on

do
if inkey$()<>"" 
text 320,200,"THIS IS THE DB TEXT COMMAND"
text2(320,200,"THIS IS OUR TEXT COMMAND")

endif
sync
loop

Function text2(X,Y,string$)
set cursor X,Y,String$
endfunction

Specs: Dual Amd Athlon 2Ghz(1Ghz x 2), 40GB 15000 Rpm SCSI Hard Drive, 640 Mb 266Mhz DDR, 12x8x32 CDRW, ATI Rage Fury Pro 32Mb SD Video, 17' Monitor

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