Game Maker Language - Programming language

Game Maker Language is a programming language created in 1999.

#885on PLDB

25Years Old

278Repos

The language historically tries to accommodate different programming backgrounds and styles - BASIC/Lua style "and" / "or" keywords can be used interchangeably with C-style "&&" / "||" operators; parentheses around conditions in if-statements and loops can be omitted; semicolons are largely optional[26] (insertion happens at the end of statement; compile error is raised in case of ambiguity). The language's default mode of operation on native platforms is via a stack machine; it can also be source-to-source compiled to C++ via LLVM for higher performance.[27] On HTML5, GML is source-to-source compiled to JavaScript with optimizations and minification applied in non-debug builds.

Tags: programming language
There are at least 278 Game Maker Language repos on GitHub
Early development of Game Maker Language happened in YoYo Games Ltd
The Google BigQuery Public Dataset GitHub snapshot shows 394 users using Game Maker Language in 430 repos on GitHub
There are 2 Project Euler users using Game Maker Language
GitHub supports syntax highlighting for Game Maker Language
Read more about Game Maker Language on the web: 1.

Example from the Hello World Collection:

// Hello World in GML (Game Maker Language)
draw_text(10,10,"Hello World")
screen_refresh()
keyboard_wait()

Example from Linguist:

/***************************************************
  Builds and sends the actual piwik tracking request
  
  Copyright (c) 2015 John Hatch
  Licenced under the MIT licence: http://opensource.org/licenses/MIT
 ***************************************************/

// Source - https://github.com/johnhatch14/GMS-Extensions/blob/master/PiwikAnalyticsForGMS/GMS_PiwikAnalytics.gmx/scripts/_piwikSendBasicReq.gml

//Build argument map
   var args = ds_map_create();
   
   //-----
   // Populate GET arguments to Piwik HTTP API
   // See full HTTP API reference at http://developer.piwik.org/api-reference/tracking-api
   //-----
   
   //Required args
   ds_map_add(args, "idsite", string(_Piwik_idsite));
   ds_map_add(args, "rec", "1");
   ds_map_add(args, "url", _piwikUrlEncode(_Piwik_baseurl + "/" + room_get_name(room)));
   ds_map_add(args, "apiv", "1");
   ds_map_add(args, "_id", _piwikUrlEncode(_Piwik_id));
   ds_map_add(args, "rand", _piwikUrlEncode( string(round(random(999999999)+game_id)) ));
   //ds_map_add(args, "new_visit", "0");
   
   //Pass local time to API
   var ctz = date_get_timezone();
   date_set_timezone(timezone_local);
   var now = date_current_datetime();
   ds_map_add(args, "h", _piwikUrlEncode(string(date_get_hour(now))));
   ds_map_add(args, "m", _piwikUrlEncode(string(date_get_minute(now))));
   ds_map_add(args, "s", _piwikUrlEncode(string(date_get_second(now))));
   date_set_timezone(ctz);
   
   // Add any other arguments passed to script in the form "param=value" to the http arg map
   //-----
   var arg_keyval;
   for (var i=0; i<argument_count; i++)
   {
    arg_keyval = _piwikStringExplode(argument[i],'=');
    ds_map_add(args, arg_keyval[0], _piwikUrlEncode(string(arg_keyval[1])));
   }

//Build argument string
   var argstring = "";
   var prevkey = ds_map_find_first(args);
   argstring += (prevkey + "=" + args[? prevkey] + "&");
   repeat (ds_map_size(args)-1)
   {
    prevkey = ds_map_find_next(args, prevkey);
    argstring += (prevkey + "=" + args[? prevkey] + "&");
   }
ds_map_destroy(args);

//Append query string to ds_list of requests to be sent at End Step.
ds_list_add(_PIWIK_REQS, "?" + argstring);

Language features

Feature	Supported	Example	Token
Strings	✓	"Hello world"	"
MultiLine Comments	✓	/* A comment */	/* */
Comments	✓	// A comment
Line Comments	✓	// A comment	//
Semantic Indentation	X