Motion Capture Game Engine Design

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Motion Capture Game Engine Design

• Created by Abishek Ganesh, Ronak Buch, Kevin
  Bhasin

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The finished project
Over the course of the project, our team created
a virtual soccer shootout, dubbed Kick. The
premise of this game is for the goalie to block a
randomly calculated shot from the striker.
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The Game Creation Pipeline
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Step 1 - Objective

• Using the Advanced Computing Center for the Arts
  and Design (ACCAD) Motion Capture Lab, capture,
  process, and integrate motions into a three
  dimensional game.

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Step 2 - Conceptualization

• Game ideas
• Soccer Shootout
• Snowboarding
• Adventure / Sword Fighting
• Covert Intrusion or Extraction / Spy Game
• Timed Escape
• Cricket

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Step 3 - Motion Capture Studio

• Jobs
• Abishek Actor
• Kevin Director
• Ronak Motion Capture Technician
• Outline
• Standing ? Walk ?
  Run-Kick-Stop ?
• -glance at goal -forward -run
  to ball
• -leg stretches -backward
  -strike ball
• -slight arm motion -come
  to slow halt
• -head roll -watch
  the goal
• Dives / Saves ? Celebration ? Sorrow
• -one per direction -action of striker -head
  in hands
• -dive to sides, jump, -Cleopatra dance -stare
  at ground
• grab, kneel -eagle dance -kick
  the grass
• -wavy dance -fall
  and pound ground

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Step 4 Animations

• After motion was captured with Vicon iQ, it was
  exported to MotionBuilder and then to Maya for
  further processing.
• After the motion was mapped to a skeleton, used
  to emulate bones and joints in a three
  dimensional model, it was exported to a format
  compatible with the game engine used in
  development.

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Step 5 Models / Texturing

• Maya was used to create a model of Ohio Stadium
  (The Horseshoe), albeit with a soccer pitch
  instead of a football field.
• The GIMP and Photoshop CS2 were used to create
  the texture maps of the Portuguese striker, the
  Brazilian goalie, and the other textures used in
  the game.

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Step 6 - Programming

• The programming language Python was used to
  implement the logic of the game in Panda3D, an
  open-source game engine that places emphasis on a
  short learning curve and rapid development.
• In its present form, the code for the game is
  about 400 lines long.

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Step 7 - Detailing

• Animations had to be trimmed at the frame level.
• Each model had to be independently scaled to in
  order to fit each other.
• Title, instruction, and credit images were
  created.
• An installer was created to allow easy
  distribution of the game.

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Step 8 Audio

• Music was inserted to benefit the ambiance of the
  game. The selections are a common soccer chant
  and an African song that adds an international
  flair to our version of the Worlds Game.
• The sound clips were edited using Audacity, an
  open-source audio editor.

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Step 9 Website

• A website was created for the game, which offers
  downloads of both the Windows installer and the
  source code with all necessary resources. This
  allows any programmer in the world to take our
  code and modify it as they see fit, which will
  help the continued evolution of the game.

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Screenshot