Screen Effects

Screen Effects - Philip Lock (Your Sinclair-March 88-Page 77)


[files SFX1.*]





Yawn! Have you ever realised how the way a screen is printed is so totally


boring? I mean one minute the screen's blank, then the screen's there -


sooooo boring. But wait, here is Philip Lock to the rescue with a collec-


tion of no less than 14 ways to recall a screen from memory. They include


fades, shutters, slides and colour doors. And they are very effective I


can tell you. What are you waiting for? Get typing!





METHOD


Easy as pie: all you have to do is type in the hex dump using the hex loader


(see TICK-TOCK CLOCK). Done that? Good, now save the whole lot by typing


SAVE "effects"CODE 60000,696. Now type in the little demo proggie and run


it to see an effective compendium of effects. Go for it!


If you want to use the routines independently just load your screen into


the memory by typing LOAD ""CODE 53000, (or alternatively load the screen


as per normal, then RANDOMIZE USR 60016 to store in memory) then consult


the table below and RANDOMIZE USR address for whatever address the routine


resides at.


If you really like a particular routine and want to use it in your own


masterpieces, just save the routine by typing: SAVE "name"CODE address,


lenght, substituting the words for values from the table:





A LITTLE ROUTINE


Routine Name: Address: Length:





PRINT 60000 12


STORE 60016 13


FADE 60025 53


SHUTTER 60078 51


SLIDE-DOWN 60129 75


SLIDE-UP 60204 70


SLIDE-LEFT 60274 67


SLIDE-RIGHT 60341 65


ATTR-DOWN 60406 24


ATTR-UP 60430 35


ATTR-LEFT 60465 52


ATTR-RIGHT 60517 47


ATTR-IN 60564 55


ATTR-OUT 60619 75