Platformer with physics

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Platformer with physics

Platformer with physics

2004-03-07 - By Geordie Moffatt

Back

Reply: 1 2 3

Try attaching a strong Angular Dashpot to the objects in the havok scene. They
can still be moved but their angles are constrained to the objects original
orientation. You'll never get the object to stay completely level, but close
enough. I'm writing a First person engine using havok to handle all
interaction, the collision for the characters are cylinders with angular
dashpots applied. This way when you apply a force to a character it stays
upright instead of rolling around. I found bevelling the top and bottom of the
collision objects helps a lot with climbing gradients etc.

Seeyas,

GM

-- -- Original Message -- --
From: Jonas Beckeman
To: dir3d-l@(protected)
Sent: Monday, March 08, 2004 3:46 AM
Subject: [Dir3d-l] [X-POST] Platformer with physics

I've just started writing a generic platform game engine, a project which is
going to be a test for my C#/Director environment as well as some Shockwave
games.

To get started quickly, I run a Havok simulation in the background that
handles the physics. Of course, I'll have to move away from that solution when
porting, but I think I'll use it a while. I haven't used Havok before, and
there's one problem with my current simple setup.

Some properties of what I've got now:

* Levels built from bezier curves, converted to mesh

* Allow for Sonic-like gameplay (running in loops etc)

* Balls and boxes that can be moved around, slide on slopes.

Using standard Havok, moving boxes over edges makes them tip and tumble,
which doesn't feel very platform-game-like. I'd like them to stay until their
whole base is over the edge, then drop without rotating. I've got some ideas,
but they'll probably take me quite a while to evaluate.

Anyone solved such a problem? Anyone that is a few hundred dollars from a
solution? I can specify further if someone's interested.

/Jonas

-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----

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<DIV>Try attaching a strong Angular Dashpot to the
objects in the havok scene.  They can still be moved but their angles are
constrained to the objects original orientation.  You'll never get the
object to stay completely level, but close enough.  I'm writing a First
person engine using havok to handle all interaction, the collision for the
characters are cylinders with angular dashpots applied.  This way when you
apply a force to a character it stays upright instead of rolling around. 
I
found bevelling the top and bottom of the collision objects helps a lot with
climbing gradients etc. </DIV>
<DIV> </DIV>
<DIV>Seeyas,</DIV>
<DIV> </DIV>
<DIV>GM</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">From:
<A title=list@(protected) href="mailto:list@(protected)">Jonas Beckeman</A> </DIV>
<DIV style="FONT: 10pt arial">To: <A
title=dir3d-l@(protected)
href="mailto:dir3d-l@(protected)">dir3d-l@(protected)<
/A>
</DIV>
<DIV style="FONT: 10pt arial">Sent: Monday, March 08, 2004 3:46
AM</DIV>
<DIV style="FONT: 10pt arial">Subject: [Dir3d-l] [X-POST] Platformer
with physics</DIV>
<DIV> </DIV>
<DIV class=Section1>
I've
 just started writing a generic platform game engine, a project which is going to be a test for my C#/Director environment as well as some Shockwave
games.<o:p></o:p>
<o:p> </o:p>

To get started quickly, I run a Havok simulation in the
background that handles
the physics. Of course,
I'll have to move away from that solution
when porting, but I think I'll use it a while. I haven't used Havok before, and there's one problem with my
current simple setup.<o:p></o:p>
<o:p> </o:p>
Some
 properties of what I've got now:<o:p></o:p>
* Levels built from bezier curves, converted to mesh<o:p></o:p>
* Allow for Sonic-like gameplay (running in loops
etc)<o:p></o:p>
* Balls and boxes that can be moved around, slide on slopes.<o:p></o:p>
<o:p> </o:p>
Using standard Havok, moving boxes over edges makes them tip and tumble, which doesn't feel very platform-game-like. I'd like them to stay until their whole base is over the edge, then drop without rotating. I've got some ideas, but they'll probably take me quite a while to evaluate.<o:p></o:p>
<o:p> </o:p>
Anyone solved such a problem?
Anyone that is a few hundred dollars from a
solution? I can specify further if someone's interested.<o:p></o:p>
<o:p> </o:p>
/Jonas<o:p></o:p></DIV>

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