HOW IT WORKS?

[nad]

Can anyone tell me how the tile engine in exult works?
I'd like to know how we make to draw the tiles in the correct order, for instance a column must be drawn over the avatar is this one is behind.

Or colum tiles must be over floor tiles...
What is the algorithm used?
Some kind of z buffer?


thanks a lot for your help!

[man]

you are right!
i'd like to know too!

Please answer this post asap!

[wjp]

Funny... two posts from the same IP range on the same topic within 4 minutes of eachother written in the same style. What a coincidence... *cough*


Anyway, to summarize: we're not using a z-buffer, but we're sorting the shapes based on a very complex shape compare function.

[nad]

yes i am confuse...
Just a joke and to (sorry) help people think it is a VERY interesting subject

next time i'll change of computer...no i'll won't do that again...
And sorry for my style but i am french and i 'am trying to do my best to communicate in the shakespeare's language

Can you tell me a bit more about this sort function, what's the name of the source file please...

thank you

[wjp]

> Just a joke and to (sorry) help people think it is a VERY interesting subject

We already think exult is a VERY interesting subject

> And sorry for my style but i am french

There's nothing wrong with your english. I was just pointing out that the writing style was the same in the two messages.


> Can you tell me a bit more about this sort function, what's the name of the source file please...

It's in objs/objs.cc. The function is Game_object::lt

[nad]

yes exult is a very interesting project...
I am an ultima 7 fan and I hate u8...beurrrrrk

I am making a rpg too with sdl and fmod for music.
i am looking for the faster tiles rendering algorithm...

Where do you come from?
USA?

[wjp]

I'm from the Netherlands.

[nad]

thanks for your help!

i 've found the order function you've told me...

This function seems to compare two objects...
Do you apply it to every objets in the scene to be drawn?
It means you'll have to make a lot of comparisons if you compare objects two by two , no?

[nad]

he wjp from this magnific country netherlands, where are you?

[drcode]

Generally, only objects within a chunk (16x16 tiles) are compared with each other, or sometimes with objects in an adjacent chunk. Also, objects don't need to be compared if they're images don't overlap, since it then doesn't matter which is drawn first.