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Doodle Jump Recreated in HTML5 ...with source

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Re: Doodle Jump Recreated in HTML5 ...with source

#51

Post by dingfeng_quek »

kushsolitary wrote: post #49
dingfeng_quek wrote: post #48

Earlier quoted context omitted.

https://twitter.com/dingfengquek/status/239445632832643073 (9160)

that tweet is protected but.. OH MY GOD!

https://twitter.com/dingfengquek/status/239451710278483970 (13119) Removed tweet protection.

It's a pretty interesting game to master - the challenge isn't in hand-eye projectile-estimation/control. While that's important, it seems pretty easy to reach a satisfactory amount (as long as one doesn't need to cross the edge of the screen and wrap-around, which the human brain doesn't seem to handle well).

The parameter to optimize, at least at scores of 8k to 13k, is to quickly evaluate the best upward paths to take.

I've tried 5 games, all which ended above 6k, which ended when I hesitated on the path. Curiously, it isn't the situations where only 1 path is available where I lose. It is the situations when two somewhat equal paths exists, and I hesitate. At areas with white blocks, where the jumping height required to reach the next block is maxed, and the next block is horizontally displaced, there's very little time to think.

Hitting springs are the worst, as it changes the screen very rapidly, making it very hard to assess the situation (3 losses to this). The next worst is a series of whites at max height, which results in a high upwards speed (1 loss to this). Last loss was due to dropping a bag of chips.

Re: Doodle Jump Recreated in HTML5 ...with source

#53

Post by aurelianito »

dingfeng_quek wrote: post #51
kushsolitary wrote: post #49

Earlier quoted context omitted.

that tweet is protected but.. OH MY GOD!

https://twitter.com/dingfengquek/status/239451710278483970 (13119) Removed tweet protection. It's a pretty interesting game to master - the challenge isn't in hand-eye projectile-estimation/control. While that's important, it seems pretty easy to reach a satisfactory amount (as long as one doesn't need to cross the edge of the screen and wrap-around, which the human brain doesn't seem to handle well). The parameter t…

10514

Re: Doodle Jump Recreated in HTML5 ...with source

#55

Post by hmottestad »

arn wrote: post #50
joering2 wrote: post #46

Earlier quoted context omitted.

where did you find him ripping Pacman off? If true (I searched through his sites, but couldnt find anything relevant), this would be like the comment of the month to me :) Also, just like being a "nice guy" or "an asshole" would make a difference, whether or not its OK to rip someone off...

his comment is nonsensical. it doesn't have anything to do with anything. not sure where he got to pacman.

He is being ironic, since anyone and everyone has ripped off pacman without pacman becoming less of an icon or the creator of pacman poorer.

Re: Doodle Jump Recreated in HTML5 ...with source

#56

Post by hmottestad »

jamiecurle wrote: post #29
tomjen3 wrote: post #18

Earlier quoted context omitted.

Freedos is a clone of the old DOS systems -- so much so that it runs the old dos programs you may have lying around. And nobody seems to have a problem with that. So why should this be an issue?

Mainly because the author of the Doodle Jump clone stated that because he created "the logic and graphics"from scratch he has the legal right to release it as open source. I can't see any evidence to suggest he has the authority to do that. Also is it possible to compare an OS with a game, isn't that like comparing a human to the Earth? On the one hand we're all made of the basic elements, but on the other we're fund…

It's his own work. Of course he has the right to release it as open source. He should however have a nice good old fashioned disclaimer against liability.

Re: Doodle Jump Recreated in HTML5 ...with source

#57

Post by hmottestad »

k-mcgrady wrote: post #34
hmottestad wrote: post #30

Earlier quoted context omitted.

Is open sourcing it really all that bad? I presume anyone with some skill could recreate such a simple game, and there are tons of copies on the app store. Showing that it's possible to create the game in html5 and showing the source is amazing and very helpful for anyone wanting to create a real game with html5. Of course, making it look exactly like Doodle Jump isn't the best of ideas, although it doesn't compete w…

I'm not sure. I guess not as the code would be very different from the original (different language/platform). "it doesn't compete with the actual product since it doesn't work on mobile" I don't think this is true. Now people have a choice - pay for the iPhone app, or play it on their computer for free. Most people will probably never know about this version but I think it is still a competitor.

The game navigation is very different though. One uses a keyboard and the other tilting of the device.

Since the game itself is not original but rather simply leverages new functionality of a device to create a new game play I would say that their market is therefore limited to those categories of devices (ie. mobile with accelerometers of giros).

Re: Doodle Jump Recreated in HTML5 ...with source

#58

Post by shell0x »

flatline3 wrote: post #39
shell0x wrote: post #26

Congratulations, I couldn't tell the difference to the original version of doodle jump. I read here that a lot of people are worried, because you recreated a game which is protected by copyright, but I wouldn't worry too much, because you don't earn money with the game and did it for fun. But still, it would be the better choice if you had released it under a nickname instead of your real name.

Stealing someone's name and graphics is OK if you use a nickname?

I haven't said that it's ok, i just said it would be the better choice to use a nickname, because this would help you to protect against a lawsuit if they try to sue him for any reason. His best option would be to ask the producer if he is fine, when the guy release his open source version of doodle jump. I think they would agree, because he doesn't earn money and doesn't seems to do anything else with it. Also it's a good ad for the product doodle jump and he also recommend to buy a copy of it.

Re: Doodle Jump Recreated in HTML5 ...with source

#59

Post by arn »

hmottestad wrote: post #55
arn wrote: post #50

Earlier quoted context omitted.

his comment is nonsensical. it doesn't have anything to do with anything. not sure where he got to pacman.

He is being ironic, since anyone and everyone has ripped off pacman without pacman becoming less of an icon or the creator of pacman poorer.

It's flawed though, which is why it doesn't make sense.

There are tons of doodle jump alikes. In fact doodle jump was a clone of an existing iOS game (papi jump). We aren't complaining about imitating gameplay. Can you show me a PAC man clone that's called "Pac-man" and uses the exact same artwork?

If if called this "HTML jump" and made original artwork, no one would be complaining. It's clear why he copied it exactly. He wants people to be confused or to recognize his work because it rides on the reputation of doodle jump.

Re: Doodle Jump Recreated in HTML5 ...with source

#60

Post by csense »

hmottestad wrote: post #30
k-mcgrady wrote: post #24

"The name of the game and images are © copyrights by the respective creators and Lima Sky" This reminds me of the fair use copyright clause people put on YouTube videos. Just because you acknowledge something is copyrighted doesn't mean you can infringe it. It's cool that you were able to build it but ripping off the artwork (if you did create that from scratch it's very good because I couldn't tell the difference),…

Is open sourcing it really all that bad? I presume anyone with some skill could recreate such a simple game, and there are tons of copies on the app store. Showing that it's possible to create the game in html5 and showing the source is amazing and very helpful for anyone wanting to create a real game with html5. Of course, making it look exactly like Doodle Jump isn't the best of ideas, although it doesn't compete w…

> Is open sourcing it really all that bad?

Your views on the ethics of open source don't really have any bearing on whether this application infringes a copyright.

> I presume anyone with some skill could recreate such a simple game, and there are tons of copies on the app store.

An independent implementation of a similar game engine would presumably be neither technically difficult nor legally problematic. The problem is that, at least according to many of the comments here, he's copying the game assets.

From a copyright perspective, independent implementation of the same technology is usually OK (see the Oracle/Google lawsuit, the court ruled that Google's independent implementation of Oracle's API was OK). It's direct copying of code and data that requires permission from the copyright holder, even if it's mixed with your own original work (the case here seems to be direct copying of art mixed with original code).

I'm guessing that, from a practical perspective, this whole debate doesn't matter in this particular case, since Google probably doesn't care about this one. They may even have open-sourced the doodle eventually on their own (anyone have information about whether past Google doodles have been open-sourced?)

Mandatory disclaimers:

1. IANAL

2. I can only speak for the situation in the USA

3. I haven't personally seen or played the original, I'm basing my opinion of what's copied or not copied on other comments

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