Hi All,
Thanks for all your help everyone...
Best regards
Neil
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of James Newton
Sent: 18 September 2001 17:54
To: [EMAIL PROTECTED]
Subject: Re: <lingo-l> Child/Parent
Neil Evans <[EMAIL PROTECTED]>
> I am trying to make the camera the child of the sphere so I can
> use it for collision detection etc
Hi Neil,
Here's a beginSprite() handler in a behavior that I use to to a
walkthrough with a camera. I use a box model with #mesh collision
detection so that it can move inside other meshes. A box has fewer
meshes than a sphere, so collision detection is faster. (A custom built
mesh cube would probably be slightly faster still).
The visibility of the model is set to #none, so that none of its faces,
inside or out, are rendered.
The camera should sit at the center of the model, so the model must
first be moved to where the camera is. I use the #preserveWorld
argument for the addChild() command so that the camera doesn't move when
it becomes a child of the box.
The rest of the behavior manipulates the box, not the camera. I use the
property name pCamera for the box to underline this.
Cheers,
James
----------------------------------------------------------------------
property pCamera -- box model used as parent of the sprite's camera
on beginSprite(me) ---------------------------------------------------
-- ACTION: Make the camera the child of a small invisible box model,
-- to which the collision modifier is attached in #mesh mode
--------------------------------------------------------------------
tSprite = sprite(me.spriteNum)
tMember = tSprite.member
tName = string(me) -- unique name
tResource = tMember.newModelResource(tName, #box)
-- Make the box big enough for collision detection
tResource.width = 4
tResource.height = 4
tResource.length = 4
-- Create an invisible model at the same position as the camera
pCamera = tMember.newModel(tName, tResource)
pCamera.visibility = #none
pCamera.transform = tSprite.camera.transform
pCamera.addChild(tSprite.camera, #preserveWorld)
-- Add the collision modifier in #mesh mode
pCamera.addModifier(#collision) -- resolve = TRUE, enabled = TRUE
pCamera.collision.mode = #mesh
end beginSprite
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