[Boscop]

Is it possible in arclib to draw onto a sprite with arclib? I know that SDL handles them as surfaces that can also be drawing targets.

And what's the difference between normal blaze and arclib-blaze?
_________________
A programmer is just a tool to convert coffeine into code!

[clayasaurus]

This folder has a sprite drawing example.

http://svn.dsource.org/projects/arclib/trunk/examples/sprite/

You can also use the arc core functions to draw images

http://svn.dsource.org/projects/arclib/trunk/examples/arc/draw.d

arclib-blaze aliases Blaze's Vector2D to ArcLib's Point to make it compatible to the rest of ArcLib, and gets updated periodically. If you want you could also just use the latest blaze and then cast(Point)Vector2D

[Boscop]

My question was if I can draw a sprite onto another sprite, i.e. using a sprite as a drawing buffer like it is possible with normal SDL.
Or is there a function to grab the contents of the screen?

Because in my game I need the ability to change sprites dynamically as the game proceeds.
_________________
A programmer is just a tool to convert coffeine into code!

[clayasaurus]

Please explain more...

[Boscop]

Well, in my game I will have a static background image and a foreground image. And the foreground image is destructible like in worms, so I would want to draw an arc with 'transparent' color and dark carbonized border onto the foreground image each time a bomb explodes somewhere. (The collision stuff is handled apart from the graphics.)
_________________
A programmer is just a tool to convert coffeine into code!

[clayasaurus]

Ok... so I'd imagine you would have it work like this.

1. Store foreground image as an SDL_Surface* img
2. Load this image to be displayed as foreground

When damage occurs...
A. Edit the pixels you need to edit in the SDL_Surface* img with SDL's functions
B. Re-load the updated texture into OpenGL

I just made a change in the texture structure to allow you to access the images pixel data as an SDL_Surface*. From there you can manipulate it as you wish.

I had to add some new functions to the Texture struct to allow for this to happen.

http://arclib.blogspot.com/2009/03/texture-pixel-data.html

You should be able to accomplish your task, now. How are you going to handle collision detection?

[Boscop]

I will have polygons and circles. Polygons are solid and are there from the beginning, i.e. during the game no polygons will be added. Circles can be added anytime and they are either solid or hollow. When a circle is added, it searches for collisions with other shapes and tells them that within their bounds they are now responsible for detection, so that sth can be inside a hollow circle (crater) without colliding with the polygon the circle is in. When a circle has no more joints to other shapes (maybe s.o. threw a big bomb in a small crater) it gets marked for being freed. The same applies to polygons who are completely covered by hollow circles (hollow circles stay forever).
Using the approach of this method it is possible to e.g. place a polygon in a large hollow circle depending of the order of the shapes in the map xml file. Like in this order: poly1, circle, poly2. When circle is added it checks only for overlap between all previously added shapes (poly1 in this case)!
But not all polygons and solid circles are destructible. There will be some walls of metal.

Which part of arclib do I have to download for being able to use the function? Do I have to 'dsss net install' it from ground up?
_________________
A programmer is just a tool to convert coffeine into code!

[clayasaurus]

texture.d is part of the arclib core

dsss net install arclib-core

should do the trick.

then just

Texture t = Texture("image.png");
t.getSDLSurface()
t.setSDLSurface(surf)

[clayasaurus]

http://arclib.blogspot.com/2009/03/texture-pixel-data.html

I'm changing to default behavior to not save the SDL surface. If you want to save the SDL surface of a specific texture, use

Texture t = Texture("tname.png", true);

which will save the SDL surface pixel data. Otherwise, that data will be destroyed as in 90% of cases you don't need it.

[Boscop]

I tried to install it via dsss but it says:

[Nthalk]

[Boscop]

Thanks!
_________________
A programmer is just a tool to convert coffeine into code!

[clayasaurus]

Don't know if you're on windows

http://svn.dsource.org/projects/arclib/trunk/

has a re-install derelict bat file.

[Boscop]

When I now run the blaze demos (after compilation), it says:

[clayasaurus]

Hi,

Try using the derelict in the arclib trunk.

- Clay