Pixilang/Programming techniques

=Programming techniques=

Getting started
Create file (f.e. MY_PROGRAM.TXT) with following text inside: a = 2 * 2 marker1: print("HELLO PIXEL! $a",-20,10,#FFFFFF) frame a = a + 1 goto marker1

And now you must execute this file with the pixilang enterpreter. After starting you will get simple animation with a text string "HELLO PIXEL" and incrementing number.

Math operations
In Pixilang all numbers are signed 32-bit integers.

It's possible to use operations without the "=" symbol. Examples:

a+1	//increment variable a

a+1*2	//add (1*2) to a

Conditional operations
Conditional operations have the following format: if SOME CONDITION { PIECE OF PROGRAM, THAT WILL BE EXECUTED IF CONDITION IS TRUE }

Examples:

//If a > 4, then save 2 to variable b if a > 4 { b = 2 }

//If a equal to 4, then save 1 to variable b if a = 1  { b = 1 }

//If b not equal to 1, then put "HELLO" string to the screen if b != 1 { print("HELLO",1,1) }

//If b not equal to 1, then put "HELLO" string to the screen, else draw a dot if b != 1 { print("HELLO",1,1) } else { dot(10,10) }

Including external files
You can include external TXT files (user libraries for example). Example: INCLUDE "external filename" External files will be included during compilation.

Program optimization
Pixilang has great methods for optimization. Lets see an example.

This is the program: pixi( t, 44, 44 ) pixi( a, 44, 44 ) pixi( b, 44, 44 ) As you can see, there is a recurring command name (pixi) and recurring parameters (44,44). In this case you can use following optimization: pixi( t, 44, 44 ) .( a ) .( b ) WTF? :) It's simple. If the command name is ".", then the last executed command will be executed. If some parameters are missing, then they will be taken from the last executed command too.