Google Map Race - Java-Gaming.org

Bonbon-Chan

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Google Map Race

« on: 2010-07-12 05:56:40 »

Long time I didn't make something... to mush work and too big projects. To make a pause, I give a try to an idea that I had.

One of the annoying thing is to create maps, so I wanted to take map form google so I only have to define start point and end point for a racing game Tongue

(yes race all around the world !!!).

I manage to "stream" map but it was too slow (I only download 1 image at a time to not harm server) and maps from google are far too mush inacurrate. So I go for an editor that download map with a few tools to define road limite. Even so, the size of data is far too mush Sad

(6mo for a small part of a small town...)

So there is the result (a flew day of works Wink

), it is not polished but it is complet : Google Map Race
And the editor : Google Map Race Editor
The source code : User : guest , Password : guest0

For the game :
left : turn left
right : turn right
up : speed up
space : select

For the editor, everything should be put in the "~/.bonbonchan/" folder. To add a race, you have to add a ".txt" file with 3 line :
1/ Name of the race
2/ Start point : ix,dx,iy,dy,angle
3/ End point : ix,dx,iy,dy,angle

ix,iy are integer of the coordinate of the image. dx,dy are double of the coordinate inside the image. angle is a double in radian.

To conclude, this game is not really good (or even legal), but I did't want to waste the code so Grin

gouessej

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Re: Google Map Race

« Reply #1 on: 2010-07-12 06:02:54 »

Nice game

I would have loved to be able to get out the car to shoot some people lol.

Julien Gouesse

DzzD

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Re: Google Map Race

« Reply #2 on: 2010-07-12 06:22:19 »

hey very good idea, It would be nice to be able to see road "locked" also zoom in & out would be awesome.

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Hansdampf

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too offending?

Re: Google Map Race

« Reply #3 on: 2010-07-12 06:48:28 »

Got the bread in 2:19:00

lots of sillystupid games: http://www.emaggame.com

gouessej

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Re: Google Map Race

« Reply #4 on: 2010-07-12 07:19:42 »

Quote from: Bonbon-Chan on 2010-07-12 05:56:40

To conclude, this game is not really good (or even legal), but I did't want to waste the code so Grin

Will you release the source code?

Julien Gouesse

Eli Delventhal

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Re: Google Map Race

« Reply #5 on: 2010-07-12 10:38:50 »

Cool. :-) I think the main thing this could benefit from (and is missing) is the ability to take any side road you want. I felt like I saw all these little roads that I would try to go down to save some time but I would just end up being cut off.

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Bonbon-Chan

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Medals: 14

Re: Google Map Race

« Reply #6 on: 2010-07-13 06:17:24 »

Quote from: gouessej on 2010-07-12 07:19:42

Will you release the source code?

You miss the versionning link Wink

https://free1.projectlocker.com/bonbonchan/GoogleMapRace/trac/browser
Login : guest
Password : guest0

Quote

There is several possible paths but it takes a lots of time to edit all the roads.

gouessej

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Re: Google Map Race

« Reply #7 on: 2010-07-13 07:28:55 »

Quote from: Bonbon-Chan on 2010-07-13 06:17:24

You miss the versionning link Wink

https://free1.projectlocker.com/bonbonchan/GoogleMapRace/trac/browser
Login : guest
Password : guest0

Thanks. I'm reading the whole source code now. Getting all files one by one is a bit painful. Do you have a GIT or SVN repository?

Maybe it would be easy to allow the car to move back by doing this:

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double acceleration = 0;
if(up) { acceleration = A; }
if(down) { acceleration = -A/10; }

instead of

1 2	double acceleration = 0; if(up) { acceleration = A; }

Julien Gouesse

Bonbon-Chan

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Re: Google Map Race

« Reply #8 on: 2010-07-14 09:39:56 »

Quote from: gouessej on 2010-07-13 07:28:55

Thanks. I'm reading the whole source code now. Getting all files one by one is a bit painful. Do you have a GIT or SVN repository?

https://free1.projectlocker.com/bonbonchan/GoogleMapRace/svn
Same login/password

Quote from: gouessej on 2010-07-13 07:28:55

Maybe it would be easy to allow the car to move back by doing this:

1
2
3

double acceleration = 0;
if(up) { acceleration = A; }
if(down) { acceleration = -A/10; }

instead of

1 2	double acceleration = 0; if(up) { acceleration = A; }

Usually in racing game, I don't even think about slowing down or going backware Tongue

h3ckboy

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Re: Google Map Race

« Reply #9 on: 2010-07-14 17:11:17 »

Quote from: Bonbon-Chan on 2010-07-14 09:39:56

Usually in racing game, I don't even think about slowing down or going backware Tongue

if u get stuck in a corner?

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Swattkidd7

Full Member

Posts: 203

Re: Google Map Race

« Reply #10 on: 2010-07-14 19:55:36 »

Quote from: h3ckboy on 2010-07-14 17:11:17

if u get stuck in a corner?

I usually just smash down the acceleration until some miracle happens and I am out of the corner haha...maybe thats just me though.

h3ckboy

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Re: Google Map Race

« Reply #11 on: 2010-07-15 12:13:21 »

hahahahahahaha

teletubo

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Re: Google Map Race

« Reply #12 on: 2010-07-17 12:11:04 »

This is quite funny, but I wish there was some hint on where is drivable and where is not ... on the end of the track I spent hours trying to find where to enter the parking lot .
Good job anyway !

(ps: the link for the editor is not working )

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Bonbon-Chan

Sr. Member

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Re: Google Map Race

« Reply #13 on: 2010-07-18 03:14:53 »

Quote from: teletubo link=topic=22710.msg187631#msg187631
(ps: the link for the editor is not working )
[/quote

Corrected

gouessej

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Re: Google Map Race

« Reply #14 on: 2010-08-27 10:04:09 »

When I replaced Timer and TimerTask by their JDK equivalent, the window stayed gray. As I did not want to keep these classes, I used something more simple:

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public void run() {
        long elapsedTimeInNano = 0, previousTimeInNano, timeInNano = System.nanoTime();
        state = new Title();

        try {
            while ((thread != null) && (thread.isAlive())) {
                time = System.currentTimeMillis();

                previousTimeInNano = timeInNano;
                timeInNano = System.nanoTime();
                elapsedTimeInNano += timeInNano - previousTimeInNano;

                int nb = (int) (elapsedTimeInNano / (1000000000 / FRAMERATE));

                if (nb > 0) {
                    elapsedTimeInNano -= nb * (1000000000 / FRAMERATE);
                }

                for (int i = 0; i < nb; i++) {
                    state.logic();
                }
                
                initDraw();
                state.draw();
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

Does my solution consume more CPU time?

Julien Gouesse

Bonbon-Chan

Sr. Member

Posts: 417
Medals: 14

Re: Google Map Race

« Reply #15 on: 2010-08-27 11:07:31 »

Without testing I will say yes, it consumes more CPU time. You have remove all wait so draw() will be invocaded as mush as possible. In my case, draw() is invocaded at most of 60 fps.

For the Timer / TimerTask, I have just copy the jdk code and made modification to have a better accuracy (you should check if I use a time in nanosecond while the original one is in milisecond, I don't remember how I have done it).

gouessej

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Re: Google Map Race

« Reply #16 on: 2010-08-27 16:27:27 »

Quote from: Bonbon-Chan on 2010-08-27 11:07:31

Without testing I will say yes, it consumes more CPU time. You have remove all wait so draw() will be invocaded as mush as possible. In my case, draw() is invocaded at most of 60 fps.

Ok that is what I feared.

Quote from: Bonbon-Chan on 2010-08-27 11:07:31

For the Timer / TimerTask, I have just copy the jdk code and made modification to have a better accuracy (you should check if I use a time in nanosecond while the original one is in milisecond, I don't remember how I have done it).

I compared the both, I only found an attribute called "offset" in TimerTask and something different in the scheduling. The problem is that I was unable to explain your modifications to some students so I preferred using something more simple. Would it be dangerous to invoke Thread.sleep() in the method JMain.run()?

Julien Gouesse

Bonbon-Chan

Sr. Member

Posts: 417
Medals: 14

Re: Google Map Race

« Reply #17 on: 2010-08-30 03:04:28 »

Quote from: gouessej on 2010-08-27 16:27:27

Ok that is what I feared.
I compared the both, I only found an attribute called "offset" in TimerTask and something different in the scheduling. The problem is that I was unable to explain your modifications to some students so I preferred using something more simple. Would it be dangerous to invoke Thread.sleep() in the method JMain.run()?

I'm an example to students Grin

funny

In JMain.run(), if nb == 0, it's mean that you have time to do a Thread.wait( ((1000000000 / FRAMERATE) - elapsedTimeInNano)/1000 ) (or use the nano second method).

For TimeTask, it use System milisecond and there is "rounding" error while using a framerate of 60. So I use an "offset" to correct the error.

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