Joints: Difference between revisions
>Samacado changed stuff to code examples, added and changed links - note that you can do (link name|link) text in double brackets |
>NXTBoy Note that you can do <nowiki>links</nowiki>, and it works fine. Also, I'm boycotting <code lua> in an effort to switch syntax highlighter - See User_talk:Mr_Doom_Bringer |
||
| Line 1: | Line 1: | ||
A '''joint''', called a "connection" while a game is loading, is something that connects two parts together. Common types of joints are [[Weld]]s, [[Snap]]s, and [[Hinge | A '''joint''', called a "connection" while a game is loading, is something that connects two parts together. Common types of joints are [[Weld]]s, [[Snap]]s, and [[Hinge]]s. Joints are represented using a [[JointInstance]] object, which has four important properties: [[C0]], [[C1]], [[Part0]], and [[Part1]]. | ||
== Automatic creation == | == Automatic creation == | ||
| Line 23: | Line 23: | ||
weld.C1 = CFrame.new(0,0,0) | weld.C1 = CFrame.new(0,0,0) | ||
</code> | </code> | ||
Will ensure that | Will ensure that {{`|=workspace.A * cf == workspace.B}} | ||
=== Rotating Joints === | === Rotating Joints === | ||
Revision as of 19:20, 15 January 2012
A joint, called a "connection" while a game is loading, is something that connects two parts together. Common types of joints are Welds, Snaps, and Hinges. Joints are represented using a JointInstance object, which has four important properties: C0, C1, Part0, and Part1.
Automatic creation
Advanced
Fixed Joints
Joints have a conceptual origin coordinate frame, to which both parts are attached.
jointOrigin == joint.Part0.CFrame * joint.C0 == joint.Part1.CFrame * joint.C1
In the case of fixed joints, this origin position is not important.
It is sufficient to make the origin position the center of Part1, and C1 the identity CFrame. For example:
local cf = ... --The transformation from A to B
local weld = Instance.new("Weld")
weld.Part0 = workspace.A
weld.Part1 = workspace.B
weld.C0 = cf
weld.C1 = CFrame.new(0,0,0)
Will ensure that workspace.A * cf == workspace.B
Rotating Joints
In a rotating joint, the conceptual origin is important. This dictates the position, and in some cases, the axis around which the joint rotates.
