Adobe Director Basics

ADOBE DIRECTOR BASICS
3D: Controlling action
[#maxNumberOfModels: ,
#maxDistance: ,
#levelOfDetail: ,
#modelList: [, ...]]
For example:
[#maxNumberOfModels: 1, #levelOfDetail: #detailed, #modelList:
[member("3D").model("Target")]]
When used with this syntax and the value #detailed for the #levelOfDetail property, the output from the function
is a list of property lists, with the format:
[[#model: ,
#distance: ,
#isectPosition: ,
#isectNormal: ,
#meshID: ,
#faceID: ,
#vertices: [, , ],
#uvCoord: [#u: , #v: ]], ...]
The #uvCoord property gives you information about which pixel in the texture image was touched by the ray. See
“Mapping a texture to a mesh resource” on page 150 for more details.
Detecting obstacles in the direction of motion
Imagine a world with one moving object: the player's avatar. Imagine an obstacle some distance away from the avatar.
Imagine that the avatar starts moving and keeps traveling in the same direction. In this case, you only need to send out
one ray to know how far the avatar will need to travel before colliding with the obstacle. If you know the speed of the
avatar, you can calculate the time when the impact will occur.
The concept of using a ray to detect collisions for an avatar steered by the user is explained in detail in “Not walking
through objects” on page 222. This article treats the simpler process required to deal with the movement of a model
traveling in a straight line.
To see a very simple game that illustrates the idea, download and launch the movie AirHockey.dir.
The direction of movement of the mouse defines the direction of the invisible ray
Last updated 8/26/2011
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