what are libraries?

[... or guest or ????]

what are libraries?

[Rattrapmax6]

Libraries are groups of SUB routines to include into the code.... If you have a hundred SUBs that are used for costum commands like:

Code: Select all

SUB TYPE(TEXT01$, X01, Y01)
    FOR i = 1 TO LEN(TEXT01$)
        T! = TIMER
        PTRL$ += MID$(TEXT01$, i, 1)
        LOCATE Y01, X01: PRINT PTRL$;
        DO: LOOP UNTIL (TIMER - T!) >= .2
    NEXT
END SUB

You could make them into a lib.... So, insted of the code being like this:

Code: Select all

DECLARE SUB TYPE(TEXT01$, X01, Y01)

TYPE "Hello, world", 1, 1
SLEEP

SUB TYPE(TEXT01$, X01, Y01)
    FOR i = 1 TO LEN(TEXT01$)
        T! = TIMER
        PTRL$ += MID$(TEXT01$, i, 1)
        LOCATE Y01, X01: PRINT PTRL$;
        DO: LOOP UNTIL (TIMER - T!) >= .2
    NEXT
END SUB

It be like this:

Code: Select all

'$include: 'type.bi'

TYPE "Hello, world", 1, 1
SLEEP

Cuts down on lines of code, and makes things look nicer.. ..

Quick compare: Libraries in life are buildings with books of knowlegde we can go to and use;;; Libraries in code are the same, the code can go to these files and use the routines from them...

[... or guest or ????]

i don't get what you mean by routines

[Rattrapmax6]

Routine

Computer Science. A set of programming instructions designed to perform a specific limited task.

Take my above example,. insted of doing this every time I want a typing effect:

Code: Select all

TEXT01$ = "Hello, world": X01 = 1: Y01 = 1

FOR i = 1 TO LEN(TEXT01$)
    T! = TIMER
    PTRL$ += MID$(TEXT01$, i, 1)
    LOCATE Y01, X01: PRINT PTRL$;
    DO: LOOP UNTIL (TIMER - T!) >= .2
NEXT

TEXT01$ = "How are you?": X01 = 1: Y01 = 2

FOR i = 1 TO LEN(TEXT01$)
    T! = TIMER
    PTRL$ += MID$(TEXT01$, i, 1)
    LOCATE Y01, X01: PRINT PTRL$;
    DO: LOOP UNTIL (TIMER - T!) >= .2
NEXT

I can make it a SUB routine and CALL it ever time I need it insted of coding it:

Code: Select all

TYPE "Hello, world", 1, 1

TYPE "How are you?", 1, 2

SUB TYPE(TEXT01$, X01, Y01)
    FOR i = 1 TO LEN(TEXT01$)
        T! = TIMER
        PTRL$ += MID$(TEXT01$, i, 1)
        LOCATE Y01, X01: PRINT PTRL$;
        DO: LOOP UNTIL (TIMER - T!) >= .2
    NEXT
END SUB

Thus making it a routine for the program to use.... You see how the library works above I hope,.. same thing, except its outside the code included in....

[Z!re]

A routine is also commonly known as a procedure, aka: Sub or function.

[... or guest or ????]

o
so it's like a sub
just to make things easier

[The Awakened]

Yes, but often times libraries are written in a different programming language, especially assembly, to make things like drawing graphics really fast, or to do things like sound and music that would otherwise take a lot of study and expermentation.

[... or guest or ????]

o i think i get it more now
o yeah is there an easier way to do graphics than using that data table thingy because it takes forever to draw 1 small picture

[Nodtveidt]

what are libraries?

Large buildings with many objects inside called "books"...they contain these things called "pages", on which are written "words".

[MystikShadows]

LOL Nek....I'm sure that answered all his questions LOL

[The Awakened]

o i think i get it more now
o yeah is there an easier way to do graphics than using that data table thingy because it takes forever to draw 1 small picture

Look in the tutorials on Pete's site, specifically on commands like BSAVE, BLOAD, GET, PUT, and stuff like that.

[{Nathan}]

and under the download/utilities section: pp256.

[... or guest or ????]

i did look at those but bload and bsave thingies still need the data table thingy
and i don't get what Nathan mean

and that was really helpful Nek, if i was 10 years younger

[The Awakened]

He said download PixelPlus 256. Excellent pixel art program, although as far as I know, you can only use the graphics it makes in Screen 13... which is pretty much the standard for QB games.

[{Nathan}]

no... you can bload in any screen mode, you just haave to remember to only use certain colors. and some games use screen 7 and 0.

[Z!re]

and that was really helpful Nek, if i was 10 years younger

Yes, I agree with Dave.. way to go Nek.. *shakes head*