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Once a Bird

Frog continued...

Posted by , 30 June 2008 - - - - - - · 114 views

After finishing the frog sprites, I used the Farseer Physics Engine to include the frog in the game.
In order to make the frog feel real each body part was added as a separate entity and revolute joints were employed to connect the body parts to each other in the positions shown below:

A revolute joint connects two bodies but doesn't constrain their relative angles, which means that after adding them the frog's legs and tongue rotated like the frog had every bone in his body broken. However Farseer also provides angle limit joints, that constrain the angle between two entities. These limits can be changed after the simulation has started.

Click here for a movie showing the leaping frog. Initially the upper and lower limits of the angle joints are set to zero, so the frog is completely rigid. Each time I press a key these limits are set to something close of a real frog and an upwards force is applied to the frog body, thus making it look like a leap. Another key sets the joint limits to the initial values. It's all Farseer's work, really.

Next step is controlling the frog's leap so he'll jump from platform to platform.


Posted by , 26 June 2008 - - - - - - · 146 views

I'm doing an animated frog for Bennu, so I started by doing the frog sprite first.
Below are the steps the sprite went through in its creation.

1. I searched the net for reference pictures and drawings.

2. Paths were used to create the main shapes of the frog...

3. ...and the animated parts were left on separate layers so they can be used as separate images.

(These separate images will be rotated and translated to animate the frog)

4. Shadows and highlights were used to make the frog more 3-D (the amulet on the top-right of the reference images was the main source for this)

And it's (mostly) done. :)

More FX

Posted by , 19 June 2008 - - - - - - · 127 views

I've changed the blocks' appearance and added some particles effects to give the idea the Bennu is burning the blocks away. Video here.

Hey kids...

Posted by , 08 June 2008 - - - - - - · 125 views

...I guess I can say "kids" now, since I'm almost 30. >< Life sure gets depressing sometimes.

I've finished most of the artwork for the third "world", the egyptian Underworld, and I've also been working on new levels. Click here for a vid of a new level in the Underworld.

Right now I have 13 levels, I want at least 30. Making a level is fast once I get an idea, the problem is getting it. :)

Stuff from beyond...

Posted by , 12 May 2008 - - - - - - · 98 views

Here's stuff I'm been doing for the Underworld, the next Bennu zone:

January 2017 »

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