ADVENTURE

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ADVENTURE

• THE MOST A-MAZE-ING GAME
• OF YOUR LIFE
• Your Adventure TA Team
• Tatyana
• Andrew
• Alex
• Arushi
• Laura
• Tyrell

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Basic Requirements

• A randomly generated maze
• A goal
• At least 2 non-player characters
• Items
• User Manual
• How are we going to do all this???
• You use the ThreeD Package!

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ThreeD World Overview

• Coordinate System Diagram
• (NOTE It will make your life a lot easier if you
  think of y as the up and down coordinate)
• Vectors
• Represented by cs015.ThreeD.Vector class
• NOT the same as a java.util.Vector
• More like a vector from Math or Physics
• Uses three values to represent a direction and a
  distance
• Constructor takes x,y,z values
• Vector Example

y
x
z
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Viewing Your 3-D World!

• Scene
• A container for all of your 3D objects!
• All your shapes, lights, and camera will live
  here
• Think 3D Graphics Collection!
• Camera
• Eye Point the location from which to see scene
• Look Vector Direction to look
• Up Vector defines which direction is up
• Window
• Displays what the camera is pointing at
• A window into the scene
• Think 3D Drawing Panel!
• Lights
• Location where the light is located in world
  space
• Color The color of the light emitted

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Camera/Window/Scene????
scene
window
camera
NOTE wide viewing angle lots of distortion
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Your ThreeD World

• Your Containers
• ThreeD.Scene
• stores all of your shapes
• all objects will have a reference to it
• you only need ONE
• ThreeD.Window
• similar to a DrawingPanel
• each window can only have one camera
• for multiple simultaneous views, you need more
  than one Window
• You will probably want simultaneous view
• Your ThreeD.WorldObjects
• translate(Vector vec)
• moves object through space by desired amount
• translateInternal(Vector vec)
• translates the shape relative to its internal
  coordinate system
• rotateY(double angle)
• rotates the shape around a vector going through
  the center of the shape, parallel to the Y-axis
  of the world
• same for X and Z

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ThreeD.WorldObject

• scale(double amount)
• scales the size of a shape by a uniform amount
• amount 1 makes object grow
• amount
• fitToUnitCube()
• scales a shape to fit into a unit cube
• youll probably want to use this often if not
  always to make your objects fit in your maze
  correctly
• To color your shape use setDiffuse(Color color)
  from ThreeD.Attributes.Appearance
• _shape.getAppearance().setDiffuse(
• new ThreeD.Color(0.8, 0.4, 0.4) )
• ThreeD.Camera
• setViewAngle(double degrees)
• sets the zoom, max at 180, default at 60
• we recommend 60 or less, otherwise your objects
  look distorted
• orient(Point eyePt,Vector lookVec,Vector upVec)
• eyePt - position of the camera in the world
• lookVec direction that the camera is looking
  at

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Creating Rooms and Connections

• Creating A Room
• How do you create a Room?
• You create walls, doors, etc around it. We call
  these connections
• Rooms and Coordinates
• This is tricky
• The x and z coordinates of a Room define its
  center point. The y coordinate defines how high
  the floor is.
• For your rooms, most of the time y 0
• Connections and Coordinates
• Also tricky
• A Connection is defined by the coordinates of the
  two Rooms it connects.
• The support code takes care of positioning
  connections as long as you give it the
  coordinates of the Rooms.
• Did we mention this is tricky?
• Lets see an example

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Room Example
Overhead view! Y axis points towards you.

• So where is a Room at (1,0,1) ?
• Right there!
• What would be the two rooms defining the top wall
  of this room?
• (1,0,1) and (1,0,0)
• Super Tricky suppose we have a room at (3,0,0).
  What two rooms define the top wall of this room
  (the outer wall of the maze?)
• (3,0,0) and (3,0,-1)
• Weird!

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Additional things to think about...

• ThreeD.Behaviors
• Perpetual (executed continuously until removed)
• Definite (breaks up movement into many steps --
  makes for smooth transitions)
• Many subclasses like rotateX, translate, etc.
  help you make smooth transitions
• You may also use ThreeD.Animator, thats
  basically the same thing as a ThreeD.Behaviors.Per
  petual
• Keyboard Input
• Exactly like what you did in Tetris!
• ActionMaps InputMaps Awesome
• When in doubt....check out the ThreeD docs linked
  off your friendly Adventure homepage!

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Your Adventure Inheritance Diagram
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Drunken Walk Algorithm

• So how do we put this maze up anyways?!?!
• .The Drunken Walk Algorithm!
• Hmmmm..
• Sounds like fun!
• Tell me more...

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More Drunken Walk

• Array of rooms starts null, call drunkenWalk()to
  create the first room.
• drunkenWalk (int row, int col)
• Make a room
• In the room, randomize order of directions in
  which to build connections
• You will need to store your randomized list of
  directions (left, right, back, forward),
• You will also need to store your connections (for
  example to the left there is wall, to the right
  there is door, back corridor, etc)
• For each direction, decide what connection to
  make
• 1) Check for array boundary
• a) If room is on border, make a wall.
• 2) Check to see if the next room is null
• a) If null make an open connection in
• current room
• b) Recurse call drunken walk on new room
• 3) If the room has been made already
• a) If there is no connection already defined
• by pre-existing room, make
  random
• connection
• b) If there is already a connection
  defined,

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Yeah, maze!

• Randomizing directions
• Fill an array with directions
• Swap two random locations for the array several
  times
• Afterwards, go through the array and visit each
  direction

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MAZE!!