Mike Sebele @robotgrapefruit Twitter profile

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Mike Sebele

2 months

I've been working on procedural movement for my busy little duck and I'm stoked with how it's turning out! 🦆 #screenshotsaturday #gamedev

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Mike Sebele

@robotgrapefruit

2 months

I made a playground for my duck! I've been working on physics interactions and couldn't help myself. Unfortunately development is now on pause as I’m too distracted riding the slide😆 A few details about the changes ⬇️ #gamedev #screenshotsaturday

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Mike Sebele

@robotgrapefruit

2 months

Last weekend I posted a video of the duck I’m making with procedural animation, and the response was really encouraging! Some of you were asking how it’s made, so I thought I’d make a little breakdown of the setup! 🧵 #gamedev #unity3d #ducks

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Mike Sebele

@robotgrapefruit

29 days

Duck model update! I thought I'd simply add moving wings.. how hard could it be? 💀 Three weeks later I think it's finally working and I'm so happy. I also changed the proportions a bit, and added eyelids and tail wiggle! #screenshotsaturday #gamedev #indiedev

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Mike Sebele

@robotgrapefruit

2 months

I'm making my ducks head act more ducky, along with some targeting and avoidance behaviours. I'm so pleased how much people love this little one and thank you to everyone who gave feedback these past weeks! 💚 #screenshotsaturday #gamedev #madewithunity

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Mike Sebele

@robotgrapefruit

2 months

Welp. This week's off to a good start👀

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Mike Sebele

@robotgrapefruit

12 days

Once again I got side tracked playing my own game. This time just triggering a hilarious physics bug in the grab interaction system I'm (supposed to be) working on. #indiedev #gamedev

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Mike Sebele

@robotgrapefruit

2 months

I added some motion transfer between the feet and moving objects. So things can get pushed around by the feet and the feet will stay in place. I can also tag surfaces like the merry-go-round where the body should try to copy the surface’s motion. Really happy with this!

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Mike Sebele

@robotgrapefruit

2 months

I’ve started a pass on the head movement by making the head a separate physics object from the body. I like how it reacts more to collisions, and adds some boing when landing. Somehow though I feel like it’s less expressive than before, but it’s a start!

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Mike Sebele

@robotgrapefruit

2 months

Ducks always look so squishy to me and I wanted mine to reflect that. So the rig doesn’t follow proper anatomy and many bones are separated so they can move independently. Each leg is just the foot and a single bone that morphs the body to imply a leg.

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Mike Sebele

@robotgrapefruit

5 years

I've been working on some water interactions! #gamedev #screenshotsaturday #madewithunity

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Mike Sebele

@robotgrapefruit

2 months

If you made it this far thank you so much for reading! And if you learned something new from this or maybe got inspired to take a quack🦆at some procedural movement, I’d love to hear!

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Mike Sebele

@robotgrapefruit

7 years

@emmamochii Love this one! I also rock dual Inspector windows to multi-select and drag things from the hierarchy #unitytips

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Mike Sebele

@robotgrapefruit

2 months

You can improve it by limiting the number of feet that are allowed to move at once, and step the foot that is farthest from its target. At this point you can move the body with scripts or whatever and it looks pretty good! I just have a few more details for some extra realism.

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Mike Sebele

@robotgrapefruit

2 months

Step 3) Find each foot’s “preferred” pose relative to the body, usually using a raycast down to the ground from some point on the body. When the distance or angle is big enough between the foot and its preferred pose, tell it to step.

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Mike Sebele

@robotgrapefruit

12 days

It really puts the other systems to the test, and I'm pretty pleased how stable it actually is haha. It's fun watching it in slow motion, everything trying to figure out what to do. #indiedev #gamedev

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Mike Sebele

@robotgrapefruit

2 months

Finally, I change the speed of the steps based on the body’s linear or angular speed. Also I don’t just raycast from the body’s current pose, but use its velocity to look ahead and cast from where it will be in one step’s worth of time.

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Mike Sebele

@robotgrapefruit

2 months

Step 2) Make a script that can perform a step given a target position and rotation. It should move the foot on a curve from its current pose to the new pose.

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Mike Sebele

@robotgrapefruit

2 months

And I think that covers the majority of the leg setup at the moment! I’m not sure if that made any sense at all, but I hope the gifs were entertaining at least 😅 I have a lot more planned, and I'm looking forward to sharing as I go!

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Mike Sebele

@robotgrapefruit

2 months

Back to the feet, I mentioned before that they will tuck it their target is too far away. So I added a rule that a tucked foot will be told to step as soon as a new target pose is found, regardless of the other leg. This allows both legs to extend when landing from a fall.

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Mike Sebele

@robotgrapefruit

2 months

I can’t go over the whole rig, but I'll point out two important constraints I made. One adds rotation to the body based on the separation of the feet for some easy wiggle action. The other bends the toes at a secondary joint when the first has too extreme of an angle.

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Mike Sebele

@robotgrapefruit

2 months

Step 1) Rig the legs with IK so the feet stay still when the body moves. I use Unity’s Animation Rigging package for rig constraints. It has some standard constraints that will be enough for most situations, but you can make custom ones if needed.

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Mike Sebele

@robotgrapefruit

2 months

To keep the body upright, I have a configurable joint with a slerp drive and configured-in-worldspace ticked. Then I can just set the joint's Target Rotation on the joint in a script to make it turn with physics.

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Mike Sebele

@robotgrapefruit

2 months

My duck’s feet have a few other features. I can change the speed of the step. Also the foot is prevented from going too far from the body. And when not stepping, if the body gets too far away, the foot clears its target and tucks in at max speed.

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Mike Sebele

@robotgrapefruit

2 months

The duck’s body is a physics object and I move it only by applying forces. This allows it to push and be pushed by other physics objects. Joystick input applies horizontal forces, and a vertical force gets applied to keep it hovering above the ground.

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Mike Sebele

@robotgrapefruit

2 months

The height it’s trying to hover at is based on the successful raycasts from the leg controller, and only applies if at least one foot is grounded. That way it can fall off ledges or trip if it can’t find footing.

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Mike Sebele

@robotgrapefruit

2 months

Disclaimer: I’m definitely not an expert on this stuff and there’s a ton of resources already about procedural animation, so I’m going to keep this pretty high level. Okay let’s go! I've grouped the setup into 3 main steps, with some smaller details between.

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Mike Sebele

@robotgrapefruit

4 years

Working on some physics based movement for this baby bird friend. #screenshotsaturday #gamedev

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Mike Sebele

@robotgrapefruit

5 years

Letting you do flips made freefall mode much less boring and useless! #gamedev #screenshotsaturday #unity3d

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Mike Sebele

@robotgrapefruit

4 years

Really starting to see what this game will be 😊 #screenshotsaturday #gamedev #madewithunity

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Mike Sebele

@robotgrapefruit

4 years

Exploring an old hard drive, found copies of these collision tutorial files from @metanetsoftware I downloaded in 2008. Thanks Metanet for making these available ❤️ I basically learned programming by studying these!

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Mike Sebele

@robotgrapefruit

2 months

@hony_beea Oh good question! I use the normal from the raycast hit as the up. Then I project the body's normal on the surface plane to get the forward. So: targetRotation = Quaternion.LookRotation ( Vector3.ProjectOnPlane( body.forward, hit.normal ), hit.normal );

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Mike Sebele

@robotgrapefruit

9 years

Met an old hero of mine tonight. He gave me a gold star.

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Mike Sebele

@robotgrapefruit

2 months

@NeoNeco42 Thank you! I'm still figuring out the gameplay and will talk more about when I have something to show! 👀

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Mike Sebele

@robotgrapefruit

2 months

@Sylva_GameDev Ah thank you! I think the simple character and fast steps make it a bit easier to pull off, but I'm still impressed with myself 😋

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Mike Sebele

@robotgrapefruit

5 years

Spawn hoops by flying around, then fly through them quickly for more points! #gamedev #screenshotsaturday

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Mike Sebele

@robotgrapefruit

4 years

Picked up this old project again. It's slot cars meets F-Zero, and I'm really pleased with how it's turning out! (this time 😅) #gamedev #screenshotsaturday #unity3d

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Mike Sebele

@robotgrapefruit

4 years

Added a "hover" mode for more precise movement. You can also float and swim on the water surface! #screenshotsaturday #madewithunity #gamedev

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Mike Sebele

@robotgrapefruit

2 months

@Soundy777 This is really good reference though 👀

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Mike Sebele

@robotgrapefruit

2 months

@Tumerboy Thank you! I love my sweety little duck. Hot take though, I think Goose it totally wholesome, it just shows affection by being a little rascal 🥺

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Mike Sebele

@robotgrapefruit

6 years

Added scroll zoom in the main menu so you can see your dog friends in all their cuteness.. also made a husky #screenshotsaturday

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Mike Sebele

@robotgrapefruit

4 years

Grow pretty flowers, And race them too! 🏁 💐💨 💐💨 #petaldrift #petaldriftgame #gamedev #ValentinesDay

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Mike Sebele

@robotgrapefruit

4 years

I got this neat side effect from the water physics where you can skip across the surface 😮 #screenshotsaturday #madewithunity #gamedev

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Mike Sebele

@robotgrapefruit

2 months

@ArtyQuinzel Ah I feel the same! The more realistic it moves, the more I want to see it succeed 🥹.. More soon!

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Mike Sebele

@robotgrapefruit

5 years

I'm thinking in this game you will play as a pterodactyl trying to inspire your babies to start flying by doing tricks for them #gamedev

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Mike Sebele

@robotgrapefruit

6 years

more

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Mike Sebele

@robotgrapefruit

2 months

@BluEspressoArt Aw! I'd definitely be open to it someday but for now it's all mine to squish hehe

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Mike Sebele

@robotgrapefruit

6 years

A new friend appears! #screenshotsaturday

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Mike Sebele

@robotgrapefruit

5 years

I made a skybox shader with day/night cycle, fake sunlight scattering in fog and cloud layer, and twinkling stars. It took a while.. was it worth it? #screenshotsaturday #gamedev #madewithunity

Skybox Shader Demo

Demoing my custom skybox shader featuring day/night cycle, rotating cloud layer, fake sunlight scattering in clouds and fog, and twinkling stars.

vimeo.com

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Mike Sebele

@robotgrapefruit

2 months

@HagerConnor Thank you! It's like, the movement is created in the fly by a bunch of scripted rules and physics rather than premade animations. I posted a little breakdown of the leg movement if you're interested!

Mike Sebele

@robotgrapefruit

2 months

Last weekend I posted a video of the duck I’m making with procedural animation, and the response was really encouraging! Some of you were asking how it’s made, so I thought I’d make a little breakdown of the setup! 🧵 #gamedev #unity3d #ducks

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Mike Sebele

@robotgrapefruit

29 days

@CodeRed_dev Not yet sadly but someday! Ohh, I want it to do that thing where they dunk their head under with their tail up 🥺

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Mike Sebele

@robotgrapefruit

29 days

@fictionNAIme Yes. This is just a straight blend of two poses to test. Will make them more dynamic next. It's gonna be goood

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Mike Sebele

@robotgrapefruit

2 months

@mindrage92 I had pecking and grabbing things working before but I broke it with these changes.. 🥲 Fixing that again will be first priority next week!

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Mike Sebele

@robotgrapefruit

5 years

Jeez! I left for a little a they've pretty much figured it out! 🙀

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Mike Sebele

@robotgrapefruit

5 years

Working on some mouse controlled 2D flying. #gamedev

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Mike Sebele

@robotgrapefruit

6 years

Look at that light bounce.. rl is such good graphics

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Mike Sebele

@robotgrapefruit

6 years

When you're testing a bug that requires dying in a specific spot in a game that replays your ghosts

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Mike Sebele

@robotgrapefruit

5 years

about minute 10, my little agents are getting better at avoiding the rocks, and some have started doing loops! #gamedev #unity3d

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Mike Sebele

@robotgrapefruit

2 months

@Lemondaurora ME TOO 🥹

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Mike Sebele

@robotgrapefruit

6 years

worth

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Mike Sebele

@robotgrapefruit

2 months

@CraigMason 😭 That's so nice! Someday soon I hope.

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Mike Sebele

@robotgrapefruit

7 years

#unitytips middle mouse click to refocus the scene view!

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Mike Sebele

@robotgrapefruit

5 years

Going through hoops impresses your babies. More straight and centered gets more points! (and more particles ;) I will probably add a speed bonus as well, later.. #gamedev #screenshotsaturday #madewithunity

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Mike Sebele

@robotgrapefruit

4 years

the front room of my house is The Bidet Experience. #AnimalCrossing #ACNH #NintendoSwitch

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Mike Sebele

@robotgrapefruit

4 years

🌺💙 Violets are blue...💙🌺 #petaldrift #petaldriftgame #gamedev #ValentinesDay

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Mike Sebele

@robotgrapefruit

4 years

🌹❤ Roses are red... ❤🌹 #petaldrift #petaldriftgame #gamedev #ValentinesDay

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Mike Sebele

@robotgrapefruit

7 years

Only in #gamedev you can experience overwhelming feelings of accomplishment and releif at the sight of a pile of pebbles..

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Mike Sebele

@robotgrapefruit

2 months

@HeroicLegendsRB Ah thank you! I love hearing from people with ducks. That head tilt is so special 😭

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Mike Sebele

@robotgrapefruit

6 years

Hmm.. hot sure how I feel about these.

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Mike Sebele

@robotgrapefruit

2 months

@PigeonPeak_ Thank you! 💚

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Mike Sebele

@robotgrapefruit

7 years

@reindeeron you can do it!

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Mike Sebele

@robotgrapefruit

7 years

@quickersparrows

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Mike Sebele

@robotgrapefruit

4 years

@maplethistles Transistor! If you don't spend forever humming to the music like me.

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Mike Sebele

@robotgrapefruit

7 years

Boss taking office to TLJ. STOKED. The joys of small office jobs.

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Mike Sebele

@robotgrapefruit

29 days

@BradleyJohnsen Ah thank you! I'm all about the little details 🙏

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Mike Sebele

@robotgrapefruit

2 months

@Silemar_ @AndreaaCW Thank you! I think the subtleties really help sell it, so it's been a big part of my focus.

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Mike Sebele

@robotgrapefruit

7 years

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Mike Sebele

@robotgrapefruit

6 years

10 years ago today my game "Chain of Fire" was released on @AddictingGames ! What have I been doing all this time!?! #flashgame #gamedev

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Mike Sebele

@robotgrapefruit

6 years

I feel I could keep making cute dog hats forever and never get bored..

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Mike Sebele

@robotgrapefruit

2 months

@vmblast Thank you! Yes, so far it's all procedural! 😋

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Mike Sebele

@robotgrapefruit

9 years

Wrote a small script to fix my bone rolls, then adjusts the animations for the new rolls. Saved like 10hrs of work. #blender + #python <3

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Mike Sebele

@robotgrapefruit

7 years

Sometimes my notebook gets fully out of control #gamedev #math

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Mike Sebele

@robotgrapefruit

6 years

Adding "stupid" to the end is just needless complexity. I think having only one S in the acronym and still pronouncing it "kiss" is actually a good example of keeping it simple..

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Mike Sebele

@robotgrapefruit

7 years

What's made of gold, comes in a small box, and represents a multi-year commitment??

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Mike Sebele

@robotgrapefruit

7 years

@quickersparrows

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Mike Sebele

@robotgrapefruit

5 years

@emmamochii Bacterial culture became part of the school's culture! 😆

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Mike Sebele

@robotgrapefruit

7 years

@quickersparrows I kind of play like a maniac so it's sort of my fault.. but still annoying

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Mike Sebele

@robotgrapefruit

7 years

Found some old notes: "CutenessStudies.png" #gamedev

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Mike Sebele

@robotgrapefruit

7 years

Rebooting an old project with great success. It involves dogs... #screenshotsaturday (it's Sunday oops)

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Mike Sebele

@robotgrapefruit

7 years

@quickersparrows

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Mike Sebele

@robotgrapefruit

29 days

@invisibirbs Yes! I improved the model's uvs so I can give it more detailed patterns. Thanks for noticing!

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Mike Sebele

@robotgrapefruit

2 months

@AndreaaCW I accept golden egg 😺

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Mike Sebele

@robotgrapefruit

5 years

@reindeeron Spongebob - Without You ft. July Talk

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Mike Sebele

@robotgrapefruit

6 years

Adding some more gameplay features. Bonus points for jumping over a car! #gamedev #screenshotsaturday #madewithunity

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Mike Sebele

@robotgrapefruit

5 years

god i hate "web dev". How can anyone think this is okay??

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Mike Sebele

@robotgrapefruit

3 years

@gabbydarienzo Obra Dinn: New Horizons

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Mike Sebele

@robotgrapefruit

7 years

@reindeeron ill never accept side burn yoda

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Mike Sebele

@robotgrapefruit

5 years

@quickersparrows reminds me of one of my favourite threads

Daniel Cook (also on mastodon)

@danctheduck

6 years

Hello! I'm a game developer and today I turned 45. Some say this is older than the allowed max of 25. Still making games. Still excited about the future. (self-indulgent thready-thread)

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Mike Sebele

@robotgrapefruit

7 years

@reindeeron sry tani, kiro has perfect eyebrows and the way yours get drawn remind me of centipedes

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Mike Sebele

@robotgrapefruit

2 months

@aSpeckling The duck duckily ducks under the ball 😆

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