[JS] RTFM: A cheat sheet for the manual's features

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Published on 3 Aug, 2019. Last updated 16 Apr, 2020

This short tutorial will sum up all the tiny things you should know about if only you took the time to read the manual. I will try to keep this up to date with new features, but I won't just copy/paste the docs. For full info on everything, rtfm: construct.net/en/make-games/manuals/construct-3/scripting/overview

  • Global scope is accessed using globalThis and not window or this. globalThis is made available on every browser and in worker mode, so it will never break
  • Global vars are accessed using runtime.globalVars
  • Local vars are accessed using localVars
  • Functions are called using runtime.callFunction(name, ...params)
  • Function params are also accessed using localVars
  • Function return value is set using runtime.setReturnValue(value)
  • DeltaTime is accessed using runtime.dt
  • Objects are accessed using runtime.objects
  • Subclasses are set using runtime.objects.objName.setInstanceClass(SubClass)
  • Subclasses must be set in the runOnStartup function
  • Mouse and Keyboard can either be accessed using runtime.mouse or runtime.keyboard or using runtime.addEventListener(name, callback) with the following events: "keydown", "keyup", "mousedown", "mousemove", "mouseup", "dblclick", "wheel", "pointerdown", "pointermove", "pointerup", "pointercancel"
  • On start of layout is done by using runtime.layout.addEventListener(name, callback) with one of the following events "beforelayoutstart", "afterlayoutstart"

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