Hacking Project - Add Back Blood In '94 (Work In Progress)

[kingraph]

I have been thinking about this for a while and decided I should at least start this hack and post on the forums for documentation/progress.

My initial thought process is as follows:

• I assume the blood animation is a separate graphic and not an entirely new set of sprites (CONFIRMED)
• Find the blood animation tiles in NHLPA'93 (DONE, most likely)
• Trace and reverse engineer the code on a blood injury in '93 (current phase)
• Bring those elements into '94

I think the first two bullets I will confirm and get done rather quickly, but the hard work will be understanding and isolating the code in '93.  My starting assumption will be that when an injury for game is triggered, the blood animation sequence is called and overlayed by the sprites head.  Who knows if that's right.  

I'll continue to post updates here as I work on this project.

[kingraph]

13 hours ago, kingraph said:

• I assume the blood animation is a separate graphic and not an entirely new set of sprites (to be confirmed)
• Find the blood animation tiles in NHLPA'93 (I think I have this already...shares the crowd palette)

As I suspected, the blood is a separate tile sequence that is on top of the sprite.  I found a few blood tiles and changed them to 1,2,3.  I think this will be helpful once I can identify which tile numbers they are in reference to the sprites.  The trace will be easier to identify (I think). 

Original

Tiles Altered

Another Example (I've since found the first tiles)

 

 

I've gotten about 19 tiles so far...I have to see all the blood animations.  I think there are two more from fighting...left and right.

[SabresFanatic]

Very Exited.

[Guest]

Any updates on this?

[bcrt2000]

With the anim image format fully documented now, this should be possible. Just a matter of grabbing the frame/sprite data from 93 and putting it into 94.

The readme of my sprite extractor has the file format documented. Also, when you run the sprite extractor, all of the metadata required to reconstruct the blood on sprites is saved as well. And visually it’s easy to browse through all the frames and find the ones with blood.

https://github.com/abdulahmad/EA-NHL-Tools/tree/main/ANIM94-To-BMP
 

I guess the tricky part is any shifting of addresses due to adding new tile data to the rom.

Edited May 14 by bcrt2000

[chaos]

I plan on adding this when I add the fighting sprites to 94 (very soon). I have the 93 code analyzed for this