PGDmC: Knight Fever

[Ingemar]

Another medieval game for the contest! We have 3, right?

It is just 1/3 of the games, hardly a strong trend. And medieval themes are among the most popular ones. Medieval and SF. Are there two SF games or more?

[Winwardo]

The game is practically ready for upload, I just need to get all the art finished and into the game. Here's the main menu and a pic of you ingame.





The gameplay is very simple, two buttons for attacking, three buttons for movement, goblins spawn progressively faster as time goes on, and anytime a goblin dies without you killing it (such as in a lava pit) you lose points. Will have the game up ASAP

EDIT: Also, it suffers from a crippling bug that closes the game due to accessing a bad part of memory. I can't replicate this bug, and even with a try except statement and other stuff, it still SIGSEGVs.

function grabCollisionArrayPixel(xz,yz:integer;xx,yy:integer) : byte;
begin
  if ((yz mod 512) = 0) then inc(yz);
  if ((xz mod 512) = 0) then inc(xz);
  if(yy < 1) then yy := 1;
  if(xx < 1) then xx := 1;
  try
    result := arrayCollisionPixels[yy,xx]^[ (512 * (yz mod 512)) + (xz mod 512) ];
  except
    raise exception.create('Bad memory access');
    writeln('SIGSEGV noted');
    result := 255;
  end;
end;

If anybody could help me with stopping this from crashing I would majorly appreciate it. It's certainly not xx and yy being out of bound, and the second value can range from 0 to 262144. By my calculations, (512 * (yz mod 512)) + (xz mod 512) should never be larget than 262143, even if yz and xz are both 511. So any ideas?

[Jimmy Valavanis]

function grabCollisionArrayPixel(xz,yz:integer;xx,yy:intege r) : byte;
begin
if ((yz mod 512) = 0) then inc(yz);
if ((xz mod 512) = 0) then inc(xz);
if(yy < 1) then yy := 1;
if(xx < 1) then xx := 1;
try
result := arrayCollisionPixels[yy,xx]^[ (512 * (yz mod 512)) + (xz mod 512) ];
except
raise exception.create('Bad memory access');
writeln('SIGSEGV noted');
result := 255;
end;
end;

If anybody could help me with stopping this from crashing I would majorly appreciate it. It's certainly not xx and yy being out of bound, and the second value can range from 0 to 262144. By my calculations, (512 * (yz mod 512)) + (xz mod 512) should never be larget than 262143, even if yz and xz are both 511. So any ideas?

What about if yz or xz are negative?
eg
xz = -10;

xz mod 512 gives a result -10 (!!)

[Winwardo]

I had never thought of that Jimmy!
I changed it to
if ((yz mod 512) <= 0) then begin inc(yz); writeln('Error #001 caught'); end;
and suddenly partway through I found that being written to my console, went up the the top left corner of the map and there were goblins outside the map! I just need to make it so they'll auto-delete if they try going outside the map, and that should fix the crash!

Thank you so much Jimmy, you've saved the entry from random crashing

EDIT: Nope, seems there are other issues too. But that was one of them. :///

Double Edit: I seem to have trapped all the crashes now and stopped them from happening, so if it does crash when it's entered, I'll be pretty annoyed, heh

[Winwardo]

Finished, just in time!
Uploaded to the FTP, and I've got a Dropbox redirect setup just incase something happens to the FTP and/or people want to try out the game without going to the FTP.
Download it here!

This has been a fun experience getting this game created and finished by the deadline, hope everyone else enjoyed doing this as well ( ignoring the stress of not being finished until fairly late into the contest )
Quick note: One of my playtesters had a bug where the goblins would pile up in a deathzone instead of taking damage. He had Windows 7 32-bit. If anyone else has this problem, please tell me and your specs to see if I can pinpoint the issue!

[Traveler]

I just tried you game on Windows (64b) but didn't experience that problem. I did notice a situation in you 'castle' level where all enemies appearing from the right side are stacked on top of each other.