I need a way to find if the character ('<') has hit a wall (Black pixel Graphic)
-On a ZX81 game.
I'm been looking at another game... which uses code
if peek(peek 16398 +256*peek 16399) = code "**blackpixel graphic**" then ...
Which seems to work for them...
Is this correct code?
I'm not really knowledgable with addresses and getting memory and stuff.
Please help me...
-If you know a better way. Please answer :)
Thanks,
Located at addresses 16398 and 16399 are two bytes that form the cursor location. (See http://web.ukonline.co.uk/sinclair.zx81/chap28.html). In other words,
peek 16398 + 256*peek 16399
gives you the memory address of the character on the screen where the next PRINT would go. Which apparently can be changed with PRINT AT
.
peek(peek 16398 + 256*peek 16399)
finds the code for whatever character is at that location. The rest you should be able to figure out.
Now, the main question is: does your game use the cursor in the same way? If not you have to use a different solution.
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