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 Crayon Physics
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the last level

the end

tutorial

title

For over ten months now I've been running this blog called Kloonigames. Idea of the blog is, that each month I try to crank out an experimental game (I try to create these games in under a week). Crayon Physics is my tenth experimental game and it was created in 5 days.

Not surprisingly in the game you play with crayons and physics. Idea is to move the red ball so that it collects all the stars in the level. You cannot move the ball directly, but you can cause it to move by drawing physical objects.

Here's quick gameplay video on video.google.com.

Direct download link: Crayon.zip (Release 1) (5.6 Mb)

I coded in C++, and I used SDL and a home made game engine of mine called Ceng. The physics engine is basically a bit modified older version Erin Catto's Box2D physics engine (which I highly recommend for anyone interested in 2D physics). The background song is Lullaby by _ghost.

Hope you enjoy the game.

[Edited by - kumikana on September 17, 2007 3:37:14 AM]


wow i'll test it, it works really cool :D


its sweet, quite a bit of fun. although the physics can be a bit twitchy at times and i'd love to see the player be able to draw more custom shapes to have a bit more creativity in the matter. but excellent work!


Thanks for the feedback. I would really like to implement the custom shapes since they would give the user so much more freedom. Unfortunately I don't know if I'll have the time do it and I don't know if the physics engine can handle a huge number of custom shapes.


This is so cool. Original and fun! Great job!


AWSOME DUDE!

I sure would like to see something like that on a NDS or Wii!

Keep up the good work!


Congratulations--the game is so much fun. The visual style is great, and the background music is very soothing. But it's damn hard (or I suck). I can't get past that level with the rotating platform in the middle.

Make sure you include some sort of level skipping functionality in the next release :P


That was awesome! Love the graphics. Gameplay was really neat.


Quote:
Original post by Muhammad Haggag
Make sure you include some sort of level skipping functionality in the next release :P


Press Escape and then select 'load level' :)




Thanks everybody for the encouraging words.

Quote:
Original post by JD557
I sure would like to see something like that on a NDS or Wii!


Yeah, I'd also like to see Crayon Physics on Nintendo DS. But that's not really my call. I'd also feel very honored even if someone made a clone of the game on Nintendo DS.


Quote:
Original post by Muhammad HaggagI can't get past that level with the rotating platform in the middle.


If you'r still stuck on that level, here's one solution.


I really enjoyed playing this over breakfast so thanks :)


This game is great! I really like the style!


This is amazing! I love it.

But we need more polygons to draw than rectangles. At least let us draw triangles.

The music is great, even with the loop. I think a game like this would be amazing on the Nintendo DS. An online feature could be sharing maps made by users.


yes, i highly recommend you put some more time and effort into this game. it has so much potential and a lot of replay value (its near different each time).


Absolutely awesome. I'd like to see some more levels, or even a level editor. I'm rather surprised we're allowed to make polygons and ovals but not triangles. Whenever I try to draw a triangle, I get a box.


This is the single coolest and most refreshingly original little game I've ever played.

Amazing.

Definately work on it more. New levels, and more shapes. I see the potential for a commercial product here.


Woot, finished it! Very cool.


Thanks everybody for the positive feedback. Glad to see so many people enjoying the game.

Yesterday I posted a blog post describing my future plans for Crayon Physics. Basically I just said that I'll try to release a level editor for the game during this month. If I have time I'll create a bit more sophisticated level editor. But in worst case I'll release my ugly not that well working level editor, that I used to create the levels in the game.

When I release the level editor I'll probably have to release a new version of the game as well. I'll try to fix some issues in the game to get it running more smoothly.




LOL, loved the look of it, I tried it and I liked it a lot.
Though it would be much easier if it wouldn't turn irregular shapes into big boxes, I know, I know, that would probabbly eat up a lot of processing, but that's just me.
Anyway, for the time it took it's amazing, I checked out your other stuff on that page and you seem to be quite an artist.


This game is really as nice as it's simple! It has an addiction factor way too big for the actual complexity of the game. However, there are a couple of things bugging me :
- No full screen capability (It must be one parameter of your window creation script... but which?
- Music gets a bit too space/repetitive after a while
- Creating an object inside or around another object makes the physics go mad (which is quite fun actually)

After my second game pass, I was starting to draw magic seals on the obstacles or on the ball, which would result in creating a big box and weird random physics effects (read : objects that fly away at incredible speeds), which had surprisingly high odds of sending me on the star that ends the level.

I am looking forward for a level editor!


I'll just repeat what has already been said here: This game is great and addictive, please improve it and make more levels!

I've got one question, how did you make the lines look so nice?


Quote:
Original post by Trillian
This game is really as nice as it's simple! It has an addiction factor way too big for the actual complexity of the game. However, there are a couple of things bugging me :
- No full screen capability (It must be one parameter of your window creation script... but which?
- Music gets a bit too space/repetitive after a while
- Creating an object inside or around another object makes the physics go mad (which is quite fun actually)

After my second game pass, I was starting to draw magic seals on the obstacles or on the ball, which would result in creating a big box and weird random physics effects (read : objects that fly away at incredible speeds), which had surprisingly high odds of sending me on the star that ends the level.

I am looking forward for a level editor!

edit: more specific directions to go fullscreen:
in the autoexec.txt file change:
StartTask( "window", Window, 10, 800, 600, 0, 0,0, "Crayon Physics - release 1", "data/gfx/ikoni.bmp", 1 );

change that to this:
StartTask( "window", Window, 10, 800, 600, 0, 1,0, "Crayon Physics - release 1", "data/gfx/ikoni.bmp", 1 );


Thevenin you are a genius!
Two years of Engineering thus far has taught me this!

This game is alot of fun! More levels!





ZippoLag: Thanks a lot for the feedback. I'll have to test the irregular shapes thing. You still have to simplify a lot of the shapes, but I think it can be done without eating too much of CPU power.

TrillianThanks. On the fullscreen issue, Jarrod1937 was nice enough to post the way the script has to be modified in order to run the game in fullscreen. But you can also switch between fullscreen and windowed mode by pressing Alt + Enter.

Btw. The repetitiveness of the soundtrack doesn't surprise me at all, I meant to game to be played for 15 minutes not for hours :)

jcabeleira: I tried a lot of different things in order to get the lines to look so nice. Basically I did 4 different alpha masked brush images (data/gfx/crayon_brush_03.png - crayon_brush_07.png). And the lines are drawn by blitting these images in random order and in random rotation so that they overlap a little. This basically creates infinite amount of random goodness that looks pretty decent.

Jarrod1937: Thanks for posting the solution to the fullscreen problem.

Thevenin: That's pretty much the way I intended the level to be solved.


This game is freaking awesome! It has a lot of potential, don't let it stay this way. Oh, and more levels :)

Some things to consider maybe:

It's pretty easy to cheat about if you deliberately place new objects inside existing ones. This can make them jump about or be used to raise the ball.

Like the level with the three rotating platforms, i just placed a bar through the ball over the length of the level. Took a few tries but then the ball sat atop it and i could simply roll it to the star.

On the other hand, it's very satisfying to get it working like that too :)


More prepenciled stuff would be nice (the trees). Didn't like that what i drew sometimes just became boxes (good for planks and such thought).

Otherwise Really Wonderful combination of grafix (the once 1 drew :P)and gameplay. Really nice! :) :D

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