[Coco] My humble Coco3 sprite project update

[Hugo Dufort]

Thanks! Once all my routines (including page flipping for smooth 
animation) are functional, I'll start working on game controls (keyboard 
only). Then I'll design some original sprites!

Hugo

Le 2015-03-19 22:55, Sylvain Rousseau a écrit :
> Look very good.
> Great work Hugo.
> Sylvain
>
>
>       Le jeudi 19 mars 2015 22h32, Hugo Dufort <hugo at seshat.ca> a écrit :
>     
>
>   Hi! I would like to that the people who have helped me getting on track
> with the Coco3 memory map, GIME and ASM. My humble Coco3 project is
> showing some results, which I can post online. For now it will only be
> screenshots, but eventually I'll post some videos as well. Here is what
> I have accomplished so far:
> - understand and use the hi-res graphics modes of the Coco3, set
> palettes, map memory pages, etc.
> - define and decode raster images using Base64 directly in the ASM code
> (this memory block can be reused once the images are extracted and
> packed to another area in memory)
> - create Buffer structures (fast-rendering bitmaps with no transparency)
> - create Sprite structures (fast-rendering bitmaps with transparency)
> - create TileSet structures (very fast-rendering 8x8 tiles)
> - render buffers, sprites and tiles
> - animate sprites using buffers
>
> I have implemented, then abandoned my palette mask trick -- it was
> faster than my current sprite technique, but not by much. I currently
> use an optimization technique that interleaves the bitmap and its mask,
> which allows me to load 2 pixels and their mask in each loop using a
> single pointer. With the whole rendering loop working in A,B,X,Y (and
> sometimes U), no need to push/read the stack.
>
> Right now I am working on page flipping and learning some addressing
> modes of the 6809 that are still a mystery to me!
>
> Here is my first screenshot:
> http://avantrad.ca/upload/hugo/coco3sprites1.png
>
>
> Hugo Dufort
>
>
>
> ---
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>


---
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
http://www.avast.com