3D Underwater World (using OpenGL and SDL)

Copyright Tristan Aubrey-Jones January 2008.

This is an example OpenGL SDL application which creates an animated 3D underwater world (screenshot), with "Thunderbird 4" with headlights moving on a spline path, a randomly generated sand terrain, sunken ship/submarine/treasure chest models, and swaying fish and seaweed. It is designed to demonstrate basic OpenGL features, and the structure is as follows:

• global.h - Global constants
• main.cpp - Main method
• game.h  game.cpp - Game class handling key presses, event loop and holding the World object.
• world.h  world.cpp - World class containing simulated enviroment with lighting setup, simulation functions and rendering code.
• clipping.h  clipping.cpp - contains the CameraView class holding the current camera position and orientation, and the FrustrumClipper class which uses hyperplanes to calculate whether a point is in view or not, so only objects inview are drawn.
• primitives.h  primitives.cpp - primitive functions for drawing simple geometric shapes, like quadrangles, and texturing them.
• regulargrid.h  regulargrid.cpp - contains a textured grid of elevations for use in the terrain
• terrain.h  terrain.cpp - generates a random fractal landscape using the diamond square function
• splines.h  splines.cpp - contains SplineCurve class and MotionPath class for holding a 3D path for an object to move along. The camera uses two, one for its position and one for its viewing object
• textures.h  textures.cpp - contains texture loading function, courtesy for John Carter and a Texture class to wrap common functionality.
• vectors.h  vectors.cpp - contains my own bespoke 3D vector class Vec3, 4D matrix class Mat4 (with transformation functions, and hyperplane class.
• worldobjects.h  worldobjects.cpp - holds base classes for world objects which contain class definitions and implementation of objects that are drawn and the animation functionality
  • seaweed.cpp - holds dynamic seaweed,
  • staticobjects.cpp - holds the submarine and the ship and the treausure chest,
  • vehicleobject.cpp - holds Thunderbird 4,
  • fish.cpp - holds fish objects

global.h

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