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View Full Version : FXWars! Catapult! (Trebuchet) : grau


grau
07-29-2004, 08:14 AM
I never posted here before but this challenge sounds like a good exercise.
This is what I got so far:
http://www.yourimagehost.com/is.php?i=14595&img=trebuchet02.jpg

I used max6 + vray

WhiteRabbitObj
07-30-2004, 12:05 AM
Looks really good! Will be great to see it in action.

grau
07-30-2004, 06:12 AM
thanks, I'm starting the simulation part today

finished texturing:
http://www.yourimagehost.com/is.php?i=14597&img=trebuchet09.jpg

Kev3D
08-02-2004, 04:27 PM
Very impressive model and texturing. I'd be interested to see how you go with the dynamics in max. I find it a bit difficult.

alx
08-02-2004, 05:40 PM
nice work on the detail... how long have u been working on it?

are u gonna use reactor to simulate?

grau
08-02-2004, 05:42 PM
Setting up reactor isn't that hard but the simulation isn't very accurate (at least for things like walls), even with the maximum of 1000 substeps.

I'm done with the trebuchet dynamics but I don't have webspace to post a video yet
anyway, here is an early image of the castle that gets hit

http://www.yourimagehost.com/is.php?i=15127&img=trebuchet10.jpg

http://www.yourimagehost.com/is.php?i=15128&img=trebuchet11.jpg

grau
08-03-2004, 06:39 PM
@alx - the trebuchet itself took me 4 days, the castle 3 days and the simulation about a week

I worked on the castle today:

http://www.yourimagehost.com/is.php?i=15452&img=trebuchet12.jpg

http://www.yourimagehost.com/is.php?i=15453&img=trebuchet13.jpg

alx
08-03-2004, 11:06 PM
wow..
cool

nice work on the castle

and i like how it looks like it is simulated...

hope to see a video :)

grau
08-10-2004, 04:49 PM
I don't have more time to work on this so this will be the final animation.

10.3mb - 320x240 - Sorensen3
http://www.angelfire.com/droid/grau/trebuchet_anim.htm
mirrror I:
http://home.arcor.de/ar0400957178/trebuchet_anim.htm
mirror II:
http://members.lycos.co.uk/grau

-keys were only used for the switch and the camera
-simulated with reactor2
-rendered with vray (34h for 473 frames at 640x480)
-the whole project took me about 2 weeks

some preview shots
http://ccc.1asphost.com/grau/trebuchet14.jpg

http://ccc.1asphost.com/grau/trebuchet15.jpg

http://ccc.1asphost.com/grau/trebuchet16.jpg

http://ccc.1asphost.com/grau/trebuchet17.jpg

Projectkmo
08-10-2004, 06:54 PM
Thats awesome! I like your scene/terrain etc...nice! Grats on getting a good final render done. I'm still affraid I wont get that far. Great work!

Seebaer
08-11-2004, 01:40 PM
Hi grau, i tried yesterday also to build a trebuchet and to simulate it in reactor2, but it doesn't work, so i want to ask you if you could write a tutorial, so that i maybe can learn a lot from you concerning reactor simulation

you don't have to, of cause, but it would be very very nice :bounce:

it dont have to be very detailed, only the ground idea and how you made it.

so please do it if you got enough time to do it.

greetz the Baer

alx
08-12-2004, 03:39 PM
i love the way your tower breaks man... cool stuff :D

grau
08-12-2004, 03:40 PM
Mirror for the animation:
http://home.arcor.de/ar0400957178/trebuchet_anim.htm

I'll post the scene setup when I got more time

grau
08-18-2004, 12:57 PM
another mirror:
http://members.lycos.co.uk/grau

bardur
08-27-2004, 11:43 AM
thatīs awsome gongrat! good job! i have been trying to do a catapult simulation but i canīt get it to work. You should concider writhing a tutorial! that would be really SWEET!

Tapio
12-10-2004, 10:58 AM
Hi! Nice work :)

I've been trying to make something like that. just a brickwall crushed by a sphere.

But, how do you get the wall to stand still untill it's hit by another object? My wall just explodes before it is even being hit. :(

Phil_Boy
01-17-2005, 07:53 PM
heres a trick i use to destroy a wall without exploding before the projectile hits:
Key the magnitude of the applied gravity to 0 and the turn it up just befor your projectile hits.

Googler24022
01-18-2005, 01:39 PM
How do you get the bricks not to fall through each other, i find this a common problem but yet to find a good solution. Thanks if you can provide one

MadSkillzMan
02-17-2005, 04:48 AM
im a 3dsmax newb..

just gimmie a few quick words on how you did the bricks/debris ...i wont make you explain ill just look it up and learn :)

grau
02-26-2005, 07:19 AM
sorry I didn't check this thread rencently


But, how do you get the wall to stand still untill it's hit by another object?(
set the bricks inactive in rigid body properties so they won't move until something hits them

How do you get the bricks not to fall through each other, i find this a common problem but yet to find a good solution. Thanks if you can provide one
I had the same problem. Lower collision tollerance and increase substeps/key.


just gimmie a few quick words on how you did the bricks/debris ...i wont make you explain ill just look it up and learn :)
-well, build a wall
-leave some space between the bricks
-be sure to set everything up in scale
-find values for collision tollerance and substeps/key that work for you

MadSkillzMan
02-26-2005, 10:19 PM
holy crap your tellin me you built that brick by brick?

I just said gimmie a few words cause i figured it was all dynamics and interactive stuff i dont know yet, so rather you explain it just lemme know what it is and id google it for myself. But thanks lol what you jsut described sounds like that works

grau
02-27-2005, 06:01 AM
holy crap your tellin me you built that brick by brick?
cgtalk proudly presents: The Building of the Tower Tutorial
-create a cylinder with 16 sides and 2 cap segments
-turn on snap to vertex
-create a box along one of the edges
-press spacebar to lock the selected box
-snap to the center of the cylinder - hold shift and rotate by 180 degrees
-choose instance
-hit space to unlock selection
-select both boxes and hit spacebar again
-snap to the center of the cylinder - hold shift and rotate by 90 degrees
-etc

MadSkillzMan
02-27-2005, 06:54 AM
lol well i guarantee i gave you a good laugh, i am a newb at this. Im just using it for video SPFX

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