Hi everyone. For PaintPad, I'm really close to releasing the first version, but before I do, I need a flood fill algorithm. I've tried a little bit, but haven't been able to get anything to work. So, I'm making it a contest of sorts.
I'm uploading a very, very, very watered down version of PaintPad, all it supports is pixel drawing and deletion. All I need is a simple flood fill function - the template is there, all that it needs is the code.
So yeah. If you're up to it, check it out, and upload or post the code for your floodfill function.
Also, here's the code for anyone not wanting to go to the trouble of downloading an sending the attached source file, FLOODSRC.
.FLOOD .The challenge is to write a good,solid floodfill function.
DiagnosticOff
.Cursor coordinates 10->X->Y
.Start the program with the cursor at 10,10
.The arrow keysmove the cursor
.When you pressALPHA, call the flood fill function .When you press2ND,it draws a pixel at the X,Yposition
ClrDraw ClrDraw^^r
.Clear exits Repeat getKey(15) .This code is unoptimized,and I use a lot of functions, for clarity purposes Input() .^All this function does is getinput from the arrow keys .Now,to get input from 2ND and ALPHA .Remember- .2ND=Draw pixel .ALPHA=Flood fill .And [DEL] deletes pixels If getKey(54) Pxl-On(X,Y)^^r End If getKey(56) Pxl-Off(X,Y)^^r End .Now,its your turn to write some code. .All I need is someone to writethe Flood() function. If getKey(48) Flood() .^That. .Scroll down tosee what code needs to be written. End .Now,for some boring display stuff .Everything is stored on the back buffer .The front buffer is for displaying the cursor and other stuff RecallPic .Display cursor Cursr() DispGraph Pause 75 .End of main loop End Return
.Finally,the flood fill function! Lbl Flood
.YOUR .CODE .HERE
.Remember, dontwrite to the front buffer,usethe back buffer
Return
.Other functions
Lbl Input If getKey(1) and (Y<63 Y++ End If getKey(2) and (X>0 X-- End If getKey(3) and (X<95 X++ End If getKey(4) and (Y>0 Y-- End Return
Lbl Cursr
Rect(X,0,1,63 Rect(0,Y,95,1 Pxl-Off(X,Y
Return
Eh, spacing on the comments is a little weird^^
PS for anyone who doesn't know what I mean by "flood fill function", it's pretty much the bucket tool in mspaint.
Hey, the machine gun looks really good. Also, the getkey command gets kind of buggy in Full speed mode, if you're using that. You don't have to Normal speed your whole game, just Normal speed the getkey parts and then full speed the rest.
wait, is that the superscript r, or am i doing something wrong? I did : {r} (open curly brace, superscript r, closed curly brace) but I get an "error: invalid token"
yeah, it's the superscript r, with no curly braces.
Idea: Only display/update a square/rectangle part of the screen. It would make for insanely easy smooth scrolling games.
How would that help smooth scrolling games?
Well, if you had the map loaded into a picture that was bigger than the screen (if you weren't using a tilemap, just had a really big picture), then you could just render a 96*64 rectangle that is the screen. TBH, classical smooth scrolling techniques are actually really easy once you get the hang of it.
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