I have a question that needs an answer. I believe i could make some games that are better than my games now, if I knew how to make it detect background collisions. So just to clearify, i need to know how to make it detect a collision between a sprite and background layers. Please help me -Josiah

The difficulty is that there is no BGCOL or similar command. However, you can detect if a sprite's home is in a BG tile with BGGET(LAYER,SPX/16,SPY/16)==0, though this changes if you use BGOFS.

so how would I use that in the code? like-- if bgget(0,x/16,y/16)==0 then beep?

Pretty much. Depending on the size of the sprite, I would recommend setting the SPHOME to (8,8), though if you use 32x32, you'd want something more like (16,16). You may want to scan a larger sprite all the way, so instead of IF BGGET(0,X/16,Y/16)==0 you'd do something like FOR I=0 TO (SPRITE SIZE)/16-1 FOR J=0 TO (SPRITE SIZE)/16-1 IF BGGET(0,X/16+I,Y/16+J)==0 THEN BEEP NEXT NEXT

Here, I wrote this code but it isn't working, I don't think. Can you tell me what to fix?

You're sprite's size is not 1x1, is it? Because that code block wouldn't work for anything smaller than 16x16. If your sprite really is 1x1, just do a single BGGET for it's location, multiple would not be necessary.

ok, Yah I don't believe it is, I just didn't uunderstand. thank you for explaining it. and it is working now. Now all I have to do is tinker with it. Thanks Zee, by the way, Keep on programming. I remember seeing you on here when I first bought this and you and others have inspired me to try harder at programming and not give up. Thanks again :)