Code: 3d_underwater

3D Underwater World (using OpenGL and SDL)

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