I think you should see the "placement_editor.agc" file.
In the code, you have the informations for the sprite :
// load all the entities
for i = 0 to val ( entityCount$ ) - 1
image$ = ReadLine ( file )
index$ = ReadLine ( file )
x$ = ReadLine ( file )
y$ = ReadLine ( file )
percentageX$ = ReadLine ( file )
percentageY$ = ReadLine ( file )
percentageWidth$ = ReadLine ( file )
percentageHeight$ = ReadLine ( file )
locked$ = ReadLine ( file )
depth$ = ReadLine ( file )
properties$ = ReadLine ( file )
scaleX$ = ReadLine ( file )
scaleY$ = ReadLine ( file )
angle$ = ReadLine ( file )
mirror$ = ReadLine ( file )
flip$ = ReadLine ( file )
....
To change the scale, you can change the line :
if ( mode$ = "virtual" )
SetSpriteScale ( id, val ( scaleX$ ), val ( scaleY$ ) )
endif
To add physics, after that line, you can add the physics you want for the sprite :
SetSpritePhysicsOn(id, 1)
// set the parameters that you want.
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