VectorGameEngine

small game engine with its own language and text editor

installing librarys:

"brew install sdl2"
"brew install sdl2_ttf"

to build this use:

"g++ file_name -o file_base_name -Wall -I include -lsdl2 -lsdl2_ttf"

• WRITING CODE:

  a) Create variable:

    . "num var_name = number"
  

  b) Create array:

    . "nums arr_name[size] = {number, number}"
  

  c) Print text:

    . "print x, y, "text", char 10"
    . "print x, y, num number"
    . "print x, y, char 100"
  

  d) Change variable:

    . ": var_name = number"
    . ": var_name += number"(-=, *=, /=)
    . ": var_name sin number" (cos)
  

  e) Change array:

    . ": arr_name[el] = number"
    . ": arr_name[el] += number"(-=, *=, /=)
    . ": arr_name[el] sin number"(cos)
    . ": arr_name append number"
    . ": arr_name pop var"
  

  f) Change variable:

    . ": var_name = number"
    . ": var_name += number"
  

  g) Loops:

    . "while ecuasion => ... end"
    . "if ecuasion => ... end"
  

  h) Functions:

    . setting - "fn function_name num var ... nums var {"
    . ending - "}"
    . calling - "@ function_name var, ..., var @"
    . returning variable - "return num value"
    . returning array - "return nums value"
    . getting from return - "-> variable"
    . getting from return - "->> array"
  

  i) "Hello, World!" example:

    . easy:
        "fn main {
            print "Hello, World!\n"
        }"
    . hard:
        "fn main }
            @ Hello_World @
        }
  
        fn Hello_World {
            str a = "Hello, World!"
            print str a, char 10
        }"
  

  g) Graphics:

    . Choosing color - "color r, g, b"
    . Clearing buffer - "clear"
    . Showing buffer - "render"
    . Draw Pixel - "putpix x, y"
    . Draw Line - "putine x1, y1, x2, y2"
  

  h) Input handling:

    . Key is pressed - "is_input var"
    . Key that was pressed - "input var"
    . Keys:
        '<' - A/LeftKey
        '>' - D/RightKey
        'V' - S/DownKey
        '^' - W/UpKey
        'A' - J
        'B' - K
  

  i) Macros:

    . constants - "#define Height 10"
    . macro - "#define SetToTen = 10"
  

  j) Including:

    1) put library in the same dir as your code file
    2) include it - "#include lib.vec"
  

• USING TEXT EDITOR:

  a) Navigation:

    . To the end of the file - "cmnd + down"
    . To the beggining of the file - "cmnd + up"
    . To the end of the line - "cmnd + left"
    . To the beggining of the line - "cmnd + right"
  

  b) Editing:

    . Cut line ufter cursor - "ctrl + K"
    . Cut the hole line - "ctrl + shift + K"