Small JavaScript that is. Or how to go from 350 kB down to just… 25 kB 23 kB.
Smaller JavaScript can help in up to three ways:
And smaller also means you can have far more complex applications for a given size budget.
Closures, also known as “anonymous methods” in Delphi, are now supported by DWScript for the JavaScript CodeGen, with the same syntax as in Delphi:
The compiler supports writing “asm” aka JavaScript section in the middle of Object Pascal, there are a few good practices as well as tips to keep in mind, let’s review the menu:
Jon Lennart Aasenden just posted on G+ several links to new “How do I” entries in the OP4JS Documentation:
You may also want to read Primoz Gabrijelcic’s article “First Steps with Smart Mobile Studio“.
We’ve now sent “Smart Mobile Studio” Alpha version to 50 testers.
Did you miss the beta invite?
Visit www.SmartMobileStudio.com to participate.
SmartMobileStudio leverages DWScript’s JavaScript CodeGen.
My first test app with the alpha was a clock, check it in your iOS or Android Browser or in the Android market. Source is included in the alpha. Will be beautified it later on 🙂
I’ve been playing on another one, head over to YouTube to see a small video, you can also get the apk (47 kB), but beware it’s basic, ugly, and definitely early alpha, but it’s coded in Pascal!
Below is a snippet of the source code (using DWS inline implementations for illustration and compactness purposes, most of OP4JS is written in the more classic interface/implementation style), it’s a snip of the root class of the mini-engine of the game (yes, virtual methods are supported):
type
TEntity = class
X, Y : Float;
function Progress : Boolean; virtual;
begin
// does nothing by default
end;
constructor Create(aX, aY : Float);
begin
X := aX;
Y := aY;
end;
function Dist2(entity : TEntity) : Float;
begin
Result := Sqr(X-entity.X)+Sqr(Y-entity.Y);
end;
end;