jpeg compression

[gamer4fun]

hey people!

i got a problem.
i used an external tile-based map editor to create a .bmp image.
that .bmp image has 57mb. so i used photoshop to save it as .jpg, and it dropped to 5mb. a good compression ratio i think.

but, when i import that image to mmf2, in the backdrop obj. it increases the size of the .exe application by 57mb, just the size of the original .bmp file.

the jpg compression doesn't work with mmf2?

how could i put several .bmp images in my application without enlarging so much the size of the .exe file?

[Anders]

MMF2's internal image format is lossless (weak compression though) so if you imported it into MMF2 it will be converted to MMF2's format instead and get a lot bigger.
What you should do is to add the JPG as an external resource but make it bundled into the exe file and let a background object (or similar object) load the picture at the start of the frame. That way your file will be keps as .jpg and the exe filesize low.

[gamer4fun]

hum... ok, i put a picture, to load the jpg image

but in the data elements (where i can see the external files) the path for the image is

C:\Program files\multimedia fusion2\projects\p1\gfx

i wonder if its gonna bug in others computers.

[aidmm]

If "p1" is the folder where your EXE will be, use the following code to locate the jpg on any computer:

Apppath$+"gfx\picture.jpg"

Apppath$ returns the path of your application.

[Joshtek]

You can also use appdrive$ + appdir$ + "gfx\picture.jpg".

appdrive$ gets the drive and appdir$ gets the directory (excluding drive).

[Sphax]

C:\Program files\multimedia fusion2\projects\p1\gfx

i wonder if its gonna bug in others computers.

The path displayed in the data element is absolute but when you'll build your application, the path will be relative.
So it's ok.

[gamer4fun]

thanks a lot u all!

[LIJI]

It's a better idea to use a PNG image, unless your game looks photographic or 3D.
It will compress better and won't lose any quality.

[neat_Kliker2]

"It will compress better and won't lose any quality."
PNG loses quality, thats why its not a huge filesize, if it didnt lose quality it would be bitmap BMP. Like with MP3, it stores only what you can see and removes what the human eye cannot see

[DavidN]

PNG is a lossless compression format. JPG does what you're describing there.