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Found 99 results

  1. Hey everyone, I've made a crowd simulation, and for that I inputed an FBX (from C4D) with bones and skin to the Agent node and added many animation clips. I wanted to make my chars open their mouth like you'd usually do with a blend shapes node, but the rig is not accessible in Houdini and there's no nodes for skin and bones (if there were I could just add blend shapes to geo) Do you guys have any idea how I could add those facial expressions without going back to C4D and having to add more bones and re-skin the base rig/model? Thank you.
  2. Good afternoon, what is the process in crowds to add a two-handed weapon to the agent? At the moment my weapon is well fitted in the upper hand, but it is impossible for me to know that it also rotates around the movement of the left hand. Thank you
  3. Crowd Usd Export

    Hi evryone, Does somebody have any experiences on crowd simulation export in usd file? I did a basic work around trying with: agent pack but it doesn't work unpack agent works well but to brut force for me If somebody have any idea? I gonna continue to workaround, hoping finding a way, even if not so confident. If any advices can be helpfull. Best Regards Mathieu
  4. Hey all, I'm trying to render out a crowd in mantra, and while my hair and hat styles are working, I'd like to add some variation to the crowd agent itself. I've already baked out maps for each agent via COPs ( 8 each) and the idea is to create a style for each agent, in this case M_01_*. I'm Trying to randomize the highlighted number in the img attached and fit it 00-07 based on @primnum or @ptnum if possible? Or can you directly use an attribute value in Material style sheets? I could just create an integer value per agent via vex then somehow use it in the style sheet? Thanks in advance!
  5. Hi all, Has anyone had any luck attaching baked cloth to a crowd agent or clip? I'm able to break out the cloth post-crowd sim and sim, however I have a very large number of agents that get close to camera and it is way too slow and I am hitting my machine limitations. I'd like to be able to bake out the cloth and add it to the clip animation so that I do not need to simulate it all after the crowd sim, however I am not sure on how to do that as all the Agent Clip options seem to only let me modify the rig animation. Has anyone successfully done this? I've tried copying over capture attributes from KineFX and saving as an FBX, but that doesn't seem to save the rig. Thanks in advance for the help!
  6. I have a problem with "fatal error: segmentation fault" I´m using Crowds and Arnold. The problem comes when start rendering. Does anyone know how to fix it? Windows 10, Houdini 18.5.563, Arnold 6.2.1.0 Thanks
  7. I'm getting significantly different behaviours between my transition testsim at SOP level and a custom crowd sim in DOPs. The triggers for the transitions between most of the different states in DOPs are set to run the loop only once (with the exception of running and walking). On both cases foot locking is turned on and in DOPs terrain projection is turned on. What I was expecting in DOPs was a result similar to the testsim in SOP level (testsim_transition.mp4). No idea what is causing this difference. testsim_transition.mp4 dopnet_transition.mp4
  8. The prop doesn't stay where it's meant to stay. I've added a simple cube and used the (brand new) agent layer node which isn't covered anywhere and is different than the older one. Any idea how to get the brand new agent layer node to work and to stop the prop from swinging? (Attached screen-print of all nodes and their parameters.)
  9. Hi, I'm new to Houdini crowds, I'm trying to set up a stadium-like crowd. My characters start sitting down, then they transition into a standing idle for a little bit, then back down to a sitting position. I'm using some additional stand up and sit down transition clips in between. My problem is I can't figure out how to maintain my characters orientation as they sit back down. They start facing their normal direction, but as they sit down they all face in different directions. I'd like for them to end up in the same orientation they started. I'm assuming it has something to do with the locomotion orientation of the clips, but not sure how I can correct it. I'm loading the clips with locomotion node set to the Hips, and the locomotion orient set to leftUpLeg. I've tried other combinations/joints as well but no luck. Is there something I'm missing? I'm attaching a simple example, eventually I'd like to add a lot more clips for variation but would like to get this part figured out first. Thanks in advance! crowdtest.zip
  10. Agent mesh modification

    Hello, How can I modify the mesh (or skin) of my agent, I did some modification but I don't know how to integrate them...to the agent setup. https://i.gyazo.com/a2b5ef75d58494087bb1ae142ff7a941.png Thank you for your help. Séba
  11. Hi guys, I am learning crowd simulation at the moment, which is suoer fun. With the premade Mocap Bipeds, all works fantastic. But when I create an agent out of an FBX from Mixamo, it gets super weird. When I try to set up everything for the ragdoll, the collision layer shows me that bones are missing. Why is that? Did you ever experience that? Also the question? To I always have to set up the joints from scratch? Is there no autmatic mode that kind of defines the moving angles? Thank you so much!! Patrick
  12. Houdini crowd attract

    I was wondering if anyone might be able to help me with trying to do something with a crowd simulation I have 2 different crowd sources and I want them to be attracted to 2 different targets, would anyone know how to do this?
  13. fuzzy obstacle sense

    is there anyone who knows how does the fuzzy obstacle sense node work? I need a simple example
  14. Hello all, I'm struggling with a crowd setup... The goal is to stop the first agents when they reach the box, then stop the agents behind them when they are close enough to other stopped agents. So the stopping ripples outwards in an infection type way CROWD TRIGGER 1 The first crowd trigger stops agents when they reach the box and adds them to the "ObjStopped" group, removing them from the "Walking" group. CROWD TRIGGER 2 (problem) I think that, once they are removed form the "Walking" group they should no longer be ignored by the "ignore same group" checkbox in the second, particle proximity, trigger and therefore agents in the "walking" group that are clsose enough should be 'triggered' and also stopped. I feel sure that this should work but it does not. I know the trigger itself works because if I untick "ignore same group" all the agents will trigger into stopping imediately. I can also see in the spreadsheet that agents stopped by the first, bounding box, trigger do leave the walking group Any help, greatly appreciated. Scene file attached CrowdTest_03.hipnc
  15. Hi, I'm working on a multi-agent crowd setup and am wondering if anyone has any insight into how to properly alter clip settings when multiple agents have the same clip name? for example, I have AgentA --> walkClip AgentB --> walkClip Right now, if I add a crowd state called 'walkClip' to my crowd simulation both of the agent types work correctly with it. My issues is if I want to speed up the cycle for AgentA, and slow down the cycle for AgentB each in their own crowd state node how would I go about doing that? Currently I can only seem to change their properties together in the 'walkClip' agent state node. I've been reading through the docs, and it seems like houdini understands that they are different cycles by pairing them with their agentname attribute? On a previous project I worked on I noticed that one of my agents was importing it's cycle name using the full name of the bclip on disk - this would separate the cycles enough for me to modify their speeds independently, however with this new project I'm not sure how to get them to pick up the full bclip name at the agent load step - anyone have any ideas how you could trigger this? eg: 'AgentB_clip.walkClip.bclip' instead of 'walkClip' any help / insights much appreciated. Thanks!
  16. Tribe is a framework and toolset, which allows the importing and rendering of Houdini crowds in alternate DCC's and renderers. Please visit http://tribe.chunkified.com for more information and contact details.
  17. Hi all, I am doing some crowd dev and am stuggling to get translating and non translating agent clips to work together in a crowd source. I have a single agent rig that is being setup to use several different mocaped animations (mixamo) in maya, I am retageting them so that all all fbx exports are on identicall rigs. I can write out all the clips and read them back in with the correct locomotion and foot planting channels so that when I read them in the agent sop I can toggle between the clips and everything is great. BUT when I plug that into the crown source and randomize the initial state, it appears only to read the locomotion channels of the agents currnet clip and then applies it to all the clips. So I ither have clips that arent meant to be moving start to hover around or have clips that are meant to be moving not moving at all. The only way around this is to then have multiple crowd sources, 1 for all the non translating clips and one for each other translating clip. Is this behavior correct or am I missing somthing...? I dont have FX so I cant take anything into dops. Hope this makes sense Many Thanks
  18. I have 1 long fbx file with different animations in that 1 file. That file and clip name is called actions In clip properties I created slices of the cycles i need like idle1, idle2, cheer1, cheer2, etc In the transition graph I setup up all my transitions like idle1_to_cheer1, idle2_to_cheer1, etc. I tested it with test_sim node and all the transitions work but I can't seem to randomize the initial states in the crowdsource node. In the crowdsource node it doesn't pick up these virtual clips (idle1, idle2, idle3, etc) I made, it only finds the first clip called actions which contains all the actions. I want to randomize my initial state with my idle clips. I'm not sure what I'm doing wrong here. Is this the correct workflow for using clip properties? Thanks for your help
  19. Crowd Agent Collision

    Hello guys . i'm new in the Houdini Crowd , i create two different agent and forced side to side , but i don't have any collision between agents , also active Ragdoll feature in DOP but get nothing . any help i'm really appreciate for my issue . houdini : 18.0.532 Thanks Crowd_Collid.hip
  20. Hi, Is it possible to use more than one Agent Layer at a time? For example, I have an Agent with naked skin geometry as the default layer. I want to add a random shirt, and random trousers and then random shoes. However, the randomize layer in the Crowd Source node only allows picking ONE layer at a time. Any tricks out there that allow this? Many thanks, Dan
  21. Houdini Crowd Locomotion Issue

    Greetings there!!! I'm having a strange issue with Houdini Crowd in 18. I'm using MOCAP data from Mixamo FBX and have multiple animations. Ive configured the crowd but unable to get Locomotion if the Skeleton is Exported as InPlace from Mixamo. But the Locomotion works if I export as Locomotion and then "Convert to In-Place Animation".... Dont know what's Wrong.... Any Solutions???? Regards
  22. Hi eveyone, I'm hoping to get a little help from a Crowd person on here. When making an Agent, how do you get different parts of the geometry to be different Agent Shapes? Let's say I have a mesh from an FBX. The mesh is a single piece, however the primitives have an attribute called @shop_materialpath I want all the primitives with @shop_materialpath = "shirt" to be one Agent Shape and all primitives with @shop_materialpath = "skin" to be another Agent Shape, and so on. Am I making sense here? If any kind person can help me, I would be grateful. Many thanks Dan
  23. Hi, I am attempting to make an HDA for Crowd in order to try using it in Unreal. I've used Houdini Crowds a bit but I'm not a Houdini super-wiz and I know even less about setting up HDAs. I could use a little help. I have got to a point where I have an HDA which accepts Agent Definitions in one input and some points in another input. That seems to work OK (in Houdini, at least. I haven't tried Unreal yet). Now I want to 'embed' my agent definition into the HDA. Is that possible? I have tried using the 'extra files' section, but I'm certain I'm not doing it right. How can you read the embedded files? I have read the manual, and tried the following: opdef:.? opdef:../..? oplib:.? etc, etc, and many variations., but nothing seems to work. How is it done? I include my test file if you can spare a minute and set me straight. Many thanks in advance! Dan HDA_test_v03.hipnc
  24. Hi, I'm trying to find a way to pin multiple iterations of the default biped to points of an animated deformed geometry, via the crowd system, but with the ragdoll activated. Actually, as if the body was literally nailed, hanging to the points, each part of the body moving accordingly to the point position, ragdoll on each. Like a dead doll whose limbs would move according to the support on which it's nailed… In other words : kind of similar to the effect of a copy to point operation, but where each copied body would benefit from it's own independent ragdoll effect, while every one sticks to its corresponding moving point. I managed to populate each point of my target geo with the biped, but the default behavior, when using the “populate” command, defines that each point is the spawn location of the crowd agent. Collision layer and joints, ragdoll is activated, but I can't find the way to pin each body to a target point, and make the ragdool work as I want. Maybe some of you masters of H will have some ideas on how to constrain each members of a crowd to a point, on a ragdoll state ?
  25. Simple Ragdoll Setup

    Hi guys, I'm working on a ragdoll setup where the characters are just falling. There's no transition between states. I did it pretty much from the shelf and now I'm stucked. Here's a couple of thing's i'd like to do: 01 - Get rid of the Walk State. Right now my setup have a Walk and Ragdoll State and I'm using a trigger to change states right on the first frame. It's working but can I keep this setup clean without this useless state? If I switch off the Walk state the characters get super messy and I have no idea why. My knowledge on crowds is really limited btw 02 - Custom Character. How can I put a character from Mixamo? I rigged this custom character there but coudn't make it work like the Mocap Biped 1 (I'll make a file showing the issue later. Can't share the one I have now) 03 - Mix some different models. I haven't even tried this and I have no idea on where to start. (Solved) 04 - Control the bounciness and friction of the ragdolls - the parameters can be controlled on the crowdobject 05 - Add initial random velocity for the limbs. Right now they're too rigid before they hit the ground Any of the questions answered would be really helpful on this work. Thank you RnD_0103.hiplc
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