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Eye of Cthulhu V2 (Terraria)

"You feel an evil presence watching you..."


In honor of the 1.3 Terraria update, I present a poseable "Eye of Cthulhu" boss model.

I thought it might be neat to make something with all the Terraria buzz going around, so I applied my skillset towards making something for the community. Being a fan of the game myself, it was fun trying to revisualize what the Eye might look like in 3D, as well as bring my own interpretation of how he functions. He's made totally from scratch, and completely hand-painted in Blender. I pulled out all the stops, or at least, all the stops I had time for. Despite having five days to work on him, I still cut it pretty close to the update release.

I tried to stay as true to the original sprite as possible, while still expanding upon his appearance for the areas where there as no source material to work with. The mouth, backside, and iris received the most attention.


I kept a few rules in mind while I was designing him:

1. When viewed from the side, make his shape follow that of the original sprite as closely as possible.

2. Stay close to the Terraria palette when assigning colors.

3. Keep things high contrast, so they "pop" a bit more visually when viewed in SFM.


It was a close competition between him and Skeletron, but ultimately I felt like the Eye was the more memorable of the two. He's the first real boss you fight, and he's usually the turning point for any new Terrarian, when they realize that Terraria is more than just a craft and build game.

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With this version, I've added a lot more to the overall model, and filled in some gaps I left open when I initially made the boss. As I stated before, I had a very short time limit, so I didn't implement everything I originally wanted to make in the first version. On top of that, I wasn't really sure how popular he was going to be(I honestly expected it to be a one off).

After examining my previous work, I decided to rebuild him instead of fix him. There were several areas on the old model that were just mistakes made by hasty work. The biggest addition to the new version is the complete redo of the back tendrils. Before, it was just a blob on the back in a vaguely fleshy shape. Now, each vein has it's own geometry, which causes the back portions to have MUCH higher fidelity when receiving light/casting shadows. Ironically, I was actually able to optimize out more triangles than I added with this version. You can see the difference in the comparison image above.

I added an additional bone to the front, which drives the tentacles around the pupil. You can now animate these tentacles to sway and move. The pupil portion also supports flexing, and has some very simple flexes for changing the shape of the pupil to evoke different emotion. The Scale and Shrink sliders let you change the size of the pupil on the vertical(V) and horizontal(H) axes. Keep in mind, these are not full facial flexes, so maxing out multiple flexes may generate errors in the mesh. Also, for fun, I added a "happy" and "mad" flex.

The texture got a second pass. I removed a lot of the excess noise in the original texture. I'm not sure why I thought those small veins were a good idea. Those have been smoothed out, and replaced with a much more subtle skitter vein pattern. I also removed a lot of the baked in AO around the pupil.

The phase 2 model isn't much different. I optimized a few sections on it, but for the most part, it's the same model.

New with this version is the servant minion and twins alternative skins. For feature completeness, I've created a custom "Servant of Cthulhu" mini-eye, styled after the eyes you use to summon Eye of Cthulhu, and the eyes he launches from his pupil during the boss fight. They have very simple tendril rigging, and are fairly low poly(I figured people will spawn a lot of them).

I've also setup the pupil/tentacles and the iris to support custom colors. Switch to the second or third skin groups and override materials. Skin 1, by default, is Retinazer. Skin 2 is Spazmatism. I was hoping to save these for when the Twins, but there really isn't any harm in releasing these early.

Finally, in order to preserve backwards compatiblity, the new version sports the "_v2" suffix. I did this to hopefully prevent any issues with old projects using the old version of the model. That said, with the exception of the tentacle bone around the pupil, the models between version 1 and 2 are pretty much the same rig-wise.

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-Both the eye model and the teeth model have rigged tendrils on the back. I don't have any rig scripts for these, but they are pretty easy to manage on their own. They also stretch fairly well, with minimal clipping.

-The teeth model is rigged with a lower and upper jaw, so you can do minor mouth movements for emotive shots.

-The white nature of the Eye tends to blow out the image in high light scenarios. He really does look better at night.

-The interior rows of "shark teeth" are bodygrouped, and can be turned off. They are on by default.

-The Eye is HUGE. I found, through searching the web, that the Eye scales anywhere between 3x to 12x the size of the player character in Terraria. I compromised with x6, using the Soldier as a scale. If he's too huge for you, just scale down his root bone.

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-VASTLY improved the back end tendrils with a much high resolution mesh for better light fidelity.

-VASTLY improved texture quality along the back and side portions of the eyeball and tendril.

-Removed wispy eye veins and replaced them with a skittery bleed in vein texture.

-Added a tentacle bone to the front, for controlling the green tentacles around the pupil(tentacle_outer).

-Added facial flexes for the pupil. Supports sizing the pupil, and minor expressions(happy and mad).

-Added "Servant of Cthulhu", the mini-eyes that are spawned by the Eye of Cthulhu. Also doubles as the "Suspicious Eye", which is used to summon the boss. Supports simple rigging for the tendrils off the back.

-Added "Retinazer" and "Spazmatism" skins.

-The iris(the purple/blue portion) is now paintable when using the alternative skins.

-The pupil(the green portion) is now paintable when using the alternative skins.

-New models are denoted with a "_v2", in order to preserve backwards compatiblity.



The original concept and design of "Eye of Cthulhu" is the intellectual property of "Re-Logic".


Includes:
terr\models\enemy\en_servant_of_cthulhu.mdl
terr\models\bosses\boss_eye_cthulhu.mdl
terr\models\bosses\boss_eye_cthulhu_phase2.mdl
terr\models\bosses\boss_eye_cthulhu_phase2_v2.mdl
terr\models\bosses\boss_eye_cthulhu_v2.mdl

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