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1  Games Center / 4K Game Competition - 2013 / Re: Demolition Derby 4K on: 2012-12-12 12:10:23
Okay, your car now has a "bull bar" attached to the front of it.  Use it to smash up the other cars while protecting your own car.

Also, damage now only occurs with larger collisions, the bigger the smash, the more damage.

http://www.java4k.com/index.php?action=games&method=view&gid=431

Other changes include:
- A handbrake (Shift key).
- Screen flashes red when you take damage.
2  Games Center / 4K Game Competition - 2013 / Re: Demolition Derby 4K on: 2012-12-09 05:56:42
The only effective strategy is to flee, wait until every car but one breaks down after running into each other at the same time, and then keep away from the last remaining car into it crashes into something. Without that strategy, it's too hard and with that strategy it's unchallenging and depends entirely on luck or patience. Sad Is it meant to be that type of game?

Yes.  Wink

....well, you can't just wait, as they come after you.  And I would have thought it's not entirely luck, as you need to dodge the other cars.  It was supposed to be a case of position your car so the opponents crash into each other.  However, it didn't quite work as well as I had hoped.

Thought about going down the route of your car is stronger on the front then the back, so if you hit someone, you do more damage or get points, but I wanted to keep it as simple as possible.

Any ideas on how to spice up the game play strategy would be greatly appreciated.
3  Games Center / 4K Game Competition - 2013 / Re: Pack200 Verify Error on: 2012-12-09 05:33:52
Hmm.  I just went into the Windows 7 Control Panel -> Java -> Temporary Internet Files -> Settings -> Delete Files.  And trashed all the cached files.  Now it works fine on this computer.

I have a feeling something odd happened when I was switching from Java 7 then back to Java 6 (I upgraded to 7, then realised 7 made a larger compile, so I switched back to 6, and all the time I was testing in the browser).
4  Games Center / 4K Game Competition - 2013 / Re: Pack200 Verify Error on: 2012-12-09 05:27:05
I am running it through proguard.  I'm using the 4KJO tool.

Weird thing is I use the same 4KJO tool on my previous years entries, and they all run fine on this computer.
5  Games Center / 4K Game Competition - 2013 / Re: Demolition Derby 4K on: 2012-12-09 05:23:42
Yay, a driving game Cheesy
Nice work on AI and tire tracks. My only complaints are (1) that there's a "game over" notification or something, instead of the game just ending, and (2) a health bar instead of a damage taken bar, although that's probably just preference.
The main trick I used to win was letting the other cars crash into each other by escaping like a ninja. Fun game!


Excellent ideas ninja driver!   Cool
1. The game actually never ends, you just get more and more cars, so I've now added a "Level x" message.
2. I agree, health bar makes more sense.  Now changed the damage bar to a health bar.
6  Games Center / 4K Game Competition - 2013 / Demolition Derby 4K on: 2012-12-09 05:02:53
Survive the mayhem and be the last car standing in this gruelling destruction derby game.

Make it through and you're in for more mayhem with with more cars.

Use the bull bar on the front of your car, to smash up the other cars and protect your car.

...oh, did I forget to mention that all the other drivers are out to get you!

Controls:
- Arrow keys or WSAD for car control.
- Shift for hand brake.
- Esc to retry.



http://www.java4k.com/index.php?action=games&method=view&gid=431


Feedback / comments / praise / flames all welcome.  ...well, maybe not the flames.   Smiley
7  Games Center / 4K Game Competition - 2013 / Re: Pack200 Verify Error on: 2012-12-09 04:58:00
Thanks Jimmt.  I just tried it on my other computer, and you're right, it works fine.  Must be something odd with the Java install on this computer.   Roll Eyes

Cheers.
8  Games Center / 4K Game Competition - 2013 / Pack200 Verify Error on: 2012-12-09 04:44:03
Hi all,

I completed my 2013 entry.  The jar file works great: http://brasurf.com.au/DemolitionDerby4K/

However, I then ran Pack200 on it: pack200 xxx.pack.gz xxx.jar and uploaded it to the Java4K site: http://www.java4k.com/index.php?action=games&method=view&gid=431  And when trying to run it, it now throws an error:



I can't figure out what I've done wrong?  Any ideas would be greatly appreciated!

Thanks.
9  Games Center / 4K Game Competition - 2012 / Re: Judging panel results! on: 2012-03-23 23:50:53
Indeed I felt like The Little Scientist might be a good start for a real game... If I find the time maybe I'll start making a mobile app out of it, who knows Smiley
If you go through all the winning games in the past java4k contests, then you'll realize all of them have one thing in common, the potential of being a full game. 4k is great for prototyping games, and as a judge what I love the most is seeing potential, my imagination takes off and I have all sorts of ideas for the game.

That's exactly what I use the Java4k for.  Apologies to the judges for boring them with car games every year!  Cheesy  Their reviews along with the community results are invaluable information.  So a big thanks to all!   Smiley

A combination of my first few game went on to become https://play.google.com/store/apps/details?id=com.craigsrace.headtoheadracing

I'm still trying to nail down what my second game will be (looks like I now have the physics, just need the game play)  Smiley

Congratulations on The Little Scientist.  Such a fun game!  I look forward to seeing it as a mobile app!   Cool
10  Games Center / 4K Game Competition - 2012 / Re: Community voting results on: 2012-03-17 05:01:12
Commanding win zeroone!  Well done and well deserved!  ...if you're going to win, you might as well smash the competition!  Grin
11  Games Center / 4K Game Competition - 2012 / Re: Laser Pinball on: 2012-01-07 00:28:53
Awesome fun!  20,000,000 and balls going everywhere!  Cool
12  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-12-27 07:57:03
Great game as always from you.

Really nice feel, pretty much like last years contribution, but much more fun gameplay!
Unfortunately I can not start level 4 because of this:

Exception in thread "Thread-16" java.lang.OutOfMemoryError: Java heap space
   at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
   at java.awt.image.Raster.createPackedRaster(Raster.java:458)
   at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
   at java.awt.image.BufferedImage.<init>(BufferedImage.java:315)
   at A.run(Unknown Source)
   at java.lang.Thread.run(Thread.java:680)



This is on OS X Lion, Java 1.6   Cry

Couldn't use handbreak either on OS X. HTML5 seems to work fine though.

Will play that now!  Cheesy

Mac OutOfMemoryError should now be fixed.  I now make my buffered images global and reuse them - no clue why the Mac Java garbage collector didn't reclaim the memory.  Roll Eyes

http://www.java4k.com/index.php?action=games&method=view&gid=354

Cheers.
13  Games Center / 4K Game Competition - 2012 / Re: Pitfall 4K on: 2011-12-16 22:11:35
Very cool!  Even has the scrolling "Activision" logo, brilliant!

You might want to use a url shortner on http://meatfighter.com/java4k2012/pitfall4k/map.html to stop the Java4K site from expanding too far across.   Smiley
14  Games Center / 4K Game Competition - 2012 / Re: Snake on a Plane on: 2011-12-04 10:39:22
Fun and addictive!  Only one very small point, I would make the snake fall a bit faster.  Found myself thinking "hurry up an fall to the bottom already".  Smiley
15  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-12-04 10:24:28
I made levels 9 and 10 a little easier.  Game is now submitted!

http://www.java4k.com/index.php?action=games&method=view&gid=354

Thank you all so much for the excellent feedback.  Smiley  And good luck everyone in the competition!  I always really enjoy programming for the Java4K comp.  Cool
16  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-12-04 10:19:07
Great game as always from you.

Really nice feel, pretty much like last years contribution, but much more fun gameplay!
Unfortunately I can not start level 4 because of this:

Exception in thread "Thread-16" java.lang.OutOfMemoryError: Java heap space
   at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
   at java.awt.image.Raster.createPackedRaster(Raster.java:458)
   at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
   at java.awt.image.BufferedImage.<init>(BufferedImage.java:315)
   at A.run(Unknown Source)
   at java.lang.Thread.run(Thread.java:680)



This is on OS X Lion, Java 1.6   Cry

The game does use a lot of memory (I create 2 2200x2200 RGB BufferedImages), however, it creates them on every level and throws away the old ones, so I'm at a loss as to why it would make it all the way to level 4 and then crash.  Might look at putting in some memory flags on the Java4K sites applet code if needed.

Couldn't use handbreak either on OS X. HTML5 seems to work fine though.

Now changed the handbreak to use the Shift key.
17  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-12-04 10:11:25
One comment, it seems like the area you're allowed to drive on before losing your points when drifting always is the same even though the track gets smaller. That causes confusion as you don't know exactly when to stop drifting due to getting to close to the secret border.

Mike

No secret border.  If all 4 wheels go off the track, then your score for that drift is lost.  So you have to be more precise when the track gets narrow.
18  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-25 12:21:05
Just for fun, I made an HTML5 version!  Grin

I stuck my 4K code into a GWT project, fixed up the game loop to be single threaded, changed the gfx calls to use GWT, and boom, GWT made me an HTML5 version!  Shocked

The only other difference is there is no dashed line support in HTML5, so I replaced the centre line with some track texture (as I wasn't worrying about the 4k limit).  The actual Javascript compiled out to only 50K, so that's not too bad.

You can see it in action here http://www.brasurf.com.au/DriftDriver/

This, my friends, I think is the future!  (well, for small online games anyway).
19  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-24 13:28:26
All issues should now be fixed:

- Now has 12 levels.
- No more impossible to control cars.  Once you get to level 6, the cars handling doesn't change much.
- Now has some dirt tracks (as well as asphalt and snow).

http://www.java4k.com/index.php?action=games&method=view&gid=354

As always, comments most welcome.

Thanks!  Smiley
20  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-24 00:30:59
Got to the last level, but immediately gave up. Took me very many tries to beat level 9, but I eventually did it. The snow level was great. It was fun and awesome, but not very challenging, which was a nice change of pace. The only 2 things that really bothers me with is for one that the car's abilities changes each level. It makes all the things you learned at the last level useless as they don't work anymore. The second thing was most apparent on the last level: The car doesn't run straight. On the last level, just holding the up arrow key makes your car make a sharp turn to the left. It was very difficult just getting the first turn right due to this, and considering the insane degree of drift needed for points, combined with the high speed of the car, the soap slippery road and the 1000 point requirement, it was pretty much impossible for me to do enough flawless drifts in a row for me, so I just gave up.

Very nice game though, especially in 4K!

After reviewing the last level, I agree.  I've made the car too powerful with not enough traction.  It's not fun, it's just annoying how it snaps into a spin so easily.

I also see your point that you need to relearn on each level.  I need the user to gradually work up from a car that doesn't drift much, to a car that does.  However, when the user does get to that car (probably the black car on level 6), I think I need to stop modifying the car, and only modify the track, points, and time limit to make it harder.

Excellent feedback!  Thank you!  It's funny how when you program and play the game so many times, you loose track of what you think works and what doesn't.  Smiley
21  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-23 16:55:59
Made it to the 5th level I think. It was the one with a 1500 score limit.

Actually, that was the 6th level!  Smiley

Made some more changes:
- There are now 10 levels.
- The track width changes between levels.
- Level 7 is now a snow track.

I think the transitioning between levels is now fairly smooth.  Please let me know if you get to a level and feel like it was too much of a jump in difficultly.

Any other comments/suggestions are also most welcome.  Smiley

http://www.java4k.com/index.php?action=games&method=view&gid=354

Many thanks again!
22  Games Center / 4K Game Competition - 2012 / Re: Mystery Mash on: 2011-11-22 02:47:03
It's now working.  Lots of fun!  Skill level was just right.  Score was pretty much level the whole way.  The start was a little slow, but then it really cranked and was a lot of fun!  Great job!
23  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-22 02:25:49
I wonder how you calculated "drift"

Drift is the angle of the rear wheels compared to the direction of travel.

The first level you only need PI/16 to get "drift", however, as you go through the levels, you need a greater angle, by level 5 you need a PI/9 angle.  Oh, and there is also a check to make sure you are going fast enough too.  Smiley
24  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-21 07:08:23
Thanks so much for all the excellent feedback.  Smiley  I've now made many changes to address the problems:

- Cars are now much faster.
- Tires have a more grip (no more ice skating rink feel).
- Front tires no longer break traction, so pulling out of a drift is easier.
- Going on the grass now helps the car out of a drift.
- More levels (now 7).
- Able to progress through levels faster.

If you get a chance, I'd really appreciate hearing if the changes make the game better, and what level people can now get up to.

http://www.java4k.com/index.php?action=games&method=view&gid=354

Thanks again!
25  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-19 16:07:39
I am not sure why, but on level two, whenever I turned, it would just keep turning until I let go fo the accelerator, and so I got some wierd circles  that spiraled off into the grass.

great game other than that though Smiley

Thanks h3ckboy  Smiley  When you released the turn control, did the wheels straighten up?  If they did, then everything is working correctly, as when the car begins to drift, you need to steer into the skid to keep control (ie. the opposite direction).  If the wheels didn't straighten up, then I have some control issues that I need to fix.   Roll Eyes
26  Games Center / 4K Game Competition - 2012 / Re: 4K 2012 contest preliminaries on: 2011-11-19 12:34:33
Any comments? What should be improved, especially with regards of the site?

First off, the Java4K site is awesome!   Cool

One small thing that could be improved is the user comments.  Publishers should me made to register to submit their game, however, players should not have to just to leave a comment.  If you used a service like http://www.disqus.com/ then I think we would see a lot more comments on the games.
27  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-19 10:59:25
There are now 5 levels!  Grin

Please give it another try.  Do the level difficulties seem right?  Too easy / hard?  Does the difficultly jump too much between certain levels?

Can anyone make it to the 5th level?  Can anyone complete the 5th level? (I can't!)

http://www.java4k.com/index.php?action=games&method=view&gid=354

Thanks again!   Smiley
28  Games Center / 4K Game Competition - 2012 / Re: Drift Driver 4K on: 2011-11-19 07:26:21
"GAME OVER" bug fixed.  Smiley

Will looking into making it easier to drive.  I assume the problem was the car would spin too easily?  Might make it a 4WD car, so you'll be able to power out of the drift, instead of having to lift off the accelerator.
29  Games Center / 4K Game Competition - 2012 / Drift Driver 4K on: 2011-11-19 06:05:16


http://www.java4k.com/index.php?action=games&method=view&gid=354

Playing around with some car physics for a drift racing game entry.

Please give it a try and any feedback would be great!

Cheers.
30  Games Center / 4K Game Competition - 2012 / Re: Mystery Mash on: 2011-11-19 05:58:23
I get the same error as moogie.
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