graviton.cpp File Reference

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Detailed Description

Contains the main loop of the game.

#include <iostream>
#include <vector>
#include <stdlib.h>
#include <SDL.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "gameobjs.h"
#include "cam.h"
#include "levels.h"
#include "menu.h"
#include "file.h"

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Functions
void	print_sdl_error (char *printme)
	Wraps SDL_GetError and prints it to cerr.
void	do_loop (void)
	The event loop of the game.
void	calcfps (void)
	Calculates framerate and prints it in the window caption.
void	movestuff (void)
	Handles all the physics of the game, essentially.
void	renderit (void)
	Do the actual rendering of the window contents.
void	keydownstuff (SDL_keysym *which)
	Handles keypresses.
void	keyupstuff (SDL_keysym *which)
	The complement to keydownstuff().
void	run_once (void)
	Initialisation code for some of the objects.
void	cleanup (void)
	Delete the objects made in makelevel().
int	main (int argc, char *argv[])
	Initialisation and main loop.
Variables
FileConfig	cfg
	Instantiation of the configuration class.
Cam	thecam
	The camera of the scene.
SDL_Surface *	win = NULL
	The actual game window.
bool	looping
	Used to show if the event loop is still running.
float	frametime = 1
	Measures the time taken for each iteration, and passed to the physics engine.
int	player1lives = 3
	Lives of player 1.
int	player2lives = 3
	Unsurprisingly, the number of lives of player 2.
vector< AbsObj * >	biglist
	The list of all objects in the scene.
Ship	playerOne = Ship(4.0, 8.0, 4.0)
	The first ship.
Ship	playerTwo = Ship(4.0, 8.0, 4.0)
	The second ship.
Grid	tehgrid = Grid(200,200)
	The grid that fades in.
vector< ShipBullet * >	bulletlist
	The global list of all projectiles in the system.
vector< ShipExhaust * >	exhaustlist
	The global list of exhaust particles in the system.

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Function Documentation

void keydownstuff (  SDL_keysym *  which  )

Handles keypresses. This currently only works with hard-coded keys. Eventually the keycodes will be stored in the ship object and retrieved by this function (or on startup) to allow user configuration of keys (or joypad). Parameters: which  The SDL structure containing the keypress in ->sym.

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void keyupstuff (  SDL_keysym *  which  )

The complement to keydownstuff(). This does the same job as keydownstuff, except runs on KEY_UP events.

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int main (  int  argc, char *  argv[] )

Initialisation and main loop. No command line flags are currently accepted. Parameters: argc  Number of arguments, including executable argv  List of arguments. Returns: Returns non-zero on error. Todo: Check what depth this should be set to.

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void movestuff (  void   )

Handles all the physics of the game, essentially. Todo: Use the camera velocity etc. here to make the camera move smoothly on respawns.

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Variable Documentation

vector<ShipBullet *> bulletlist

The global list of all projectiles in the system. List of lists.

vector<ShipExhaust *> exhaustlist

The global list of exhaust particles in the system. List of lists.

Grid tehgrid = Grid(200,200)

The grid that fades in. I'm l337.

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