Help with ball

[STGraves]

Hello i have 1 question, is there any way to change the color of the ball from the playfield's color?

[Papa]

Looks like someone's been in that Princess Rescue binary!

[+SpiceWare]

TIA only has 4 color registers. Normally they color the screen like this:

• COLUP0 - player0 and missile0
• COLUP1 - player1 and missile1
• COLUPF - playfield and ball
• COLUBK - background

normal mode, the square in Adventure is drawn using the ball object

 

If you turn on SCORE mode, the registers are used like this:

• COLUP0 - player0, missile0, left half of playfield
• COLUP1 - player1, missile1, right half of playfield
• COLUPF - ball
• COLUBK - background

SCORE mode, the square (ball) is a different color than the playfield

So SCORE mode could be used to make the ball a different color than the playfield. I used SCORE mode in Medieval Mayhem to color parts of the playfield differently than other parts of the playfield:

 

SCORE/normal/SCORE

The king symbols and the castle walls are both drawn by the playfield. I toggle between SCORE mode and normal mode during the time the 1 PF pixel gap (pointed at by the arrows) is being drawn.

 

While that's probably not the answer you're looking for, I put it forth because you could do the same type of thing by changing the color in COLUPF while the scanline is being generated. It would be very tricky to do though if the ball object is right next to the playfield. It would be even more tricky if the ball object can move around.

Edited February 16, 2015 by SpiceWare