physics_particle.c File Reference

#include <banjo/assert.h>
#include <banjo/bitmap.h>
#include <banjo/draw.h>
#include <banjo/event.h>
#include <banjo/log.h>
#include <banjo/main.h>
#include <banjo/mat.h>
#include <banjo/physics.h>
#include <banjo/physics_2d.h>
#include <banjo/renderer.h>
#include <banjo/system.h>
#include <banjo/time.h>
#include <banjo/vec.h>
#include <banjo/window.h>
#include <stdlib.h>

Include dependency graph for physics_particle.c:

Data Structures
struct	planet_t

Macros
#define	BJ_AUTOMAIN_CALLBACKS
#define	SCREEN_WIDTH   800
#define	SCREEN_HEIGHT   600
#define	CANVAS_WIDTH   SCREEN_WIDTH
#define	CANVAS_HEIGHT   SCREEN_HEIGHT
#define	G_SUN   BJ_F(120.0)
#define	SOFTENING   BJ_F(6.0)
#define	M_SUN   BJ_F(1000.0)
#define	M_MERCURY   BJ_F(0.055)
#define	M_VENUS   BJ_F(0.815)
#define	M_EARTH   BJ_F(1.0)
#define	M_MARS   BJ_F(0.107)
#define	M_JUPITER   BJ_F(317.8)
#define	N_PLANETS   5
#define	N_ASTEROIDS   800
#define	DT_CLAMP   (BJ_F(1.0)/BJ_F(120.0))

Functions
static void	update_projection ()
static bj_real	orbital_speed_soft (bj_real G, bj_real M, bj_real r, bj_real eps)
static void	init_sun ()
static void	init_planet (planet_t *p, bj_real r, bj_real mass, uint32_t color, bj_real draw_r, bj_real phase)
static void	init_asteroids ()
static void	initialize ()
static void	update (bj_real t)
static void	physics (bj_real dt)
static void	draw ()
int	bj_app_begin (void **user_data, int argc, char *argv[])
int	bj_app_iterate (void *user_data)
int	bj_app_end (void *user_data, int status)

Variables
bj_window *	window = 0
bj_bitmap *	framebuffer = 0
bj_renderer *	renderer = 0
bj_mat3x3	projection
planet_t	planets [5]
bj_particle_2d	sun = {0}
bj_particle_2d	asteroids [800]
uint32_t	asteroid_color
bj_stopwatch	stopwatch

---

Data Structure Documentation

planet_t

struct planet_t

Examples

physics_particle.c.

Collaboration diagram for planet_t:

Data Fields
bj_particle_2d	body
uint32_t	color
bj_real	radius

Macro Definition Documentation

BJ_AUTOMAIN_CALLBACKS

#define BJ_AUTOMAIN_CALLBACKS

CANVAS_HEIGHT

#define CANVAS_HEIGHT   SCREEN_HEIGHT

Examples

physics_particle.c.

CANVAS_WIDTH

#define CANVAS_WIDTH   SCREEN_WIDTH

Examples

physics_particle.c.

DT_CLAMP

#define DT_CLAMP   (BJ_F(1.0)/BJ_F(120.0))

Examples

physics_particle.c.

G_SUN

#define G_SUN   BJ_F(120.0)

Examples

physics_particle.c.

M_EARTH

#define M_EARTH   BJ_F(1.0)

Examples

physics_particle.c.

M_JUPITER

#define M_JUPITER   BJ_F(317.8)

Examples

physics_particle.c.

M_MARS

#define M_MARS   BJ_F(0.107)

Examples

physics_particle.c.

M_MERCURY

#define M_MERCURY   BJ_F(0.055)

Examples

physics_particle.c.

M_SUN

#define M_SUN   BJ_F(1000.0)

Examples

physics_particle.c.

M_VENUS

#define M_VENUS   BJ_F(0.815)

Examples

physics_particle.c.

N_ASTEROIDS

#define N_ASTEROIDS   800

Examples

physics_particle.c.

N_PLANETS

#define N_PLANETS   5

Examples

physics_particle.c.

SCREEN_HEIGHT

#define SCREEN_HEIGHT   600

SCREEN_WIDTH

#define SCREEN_WIDTH   800

SOFTENING

#define SOFTENING   BJ_F(6.0)

Examples

physics_particle.c.

Function Documentation

bj_app_begin()

int bj_app_begin	(	void **	user_data,
		int	argc,
		char *	argv[] )

bj_app_end()

int bj_app_end	(	void *	user_data,
		int	status )

bj_app_iterate()

int bj_app_iterate

(

void *

user_data

)

draw()

void draw ( )

static

init_asteroids()

void init_asteroids ( )

static

Examples

physics_particle.c.

init_planet()

void init_planet ( planet_t * p, bj_real r, bj_real mass, uint32_t color, bj_real draw_r, bj_real phase )

static

Examples

physics_particle.c.

init_sun()

void init_sun ( )

static

Examples

physics_particle.c.

initialize()

void initialize ( )

static

Examples

physics_particle.c.

orbital_speed_soft()

bj_real orbital_speed_soft ( bj_real G, bj_real M, bj_real r, bj_real eps )

static

Examples

physics_particle.c.

physics()

void physics ( bj_real dt )

static

Examples

physics_particle.c.

update()

void update ( bj_real t )

static

update_projection()

void update_projection ( )

static

Examples

physics_particle.c.

Variable Documentation

asteroid_color

uint32_t asteroid_color

Examples

physics_particle.c.

asteroids

bj_particle_2d asteroids[800]

Examples

physics_particle.c.

framebuffer

bj_bitmap* framebuffer = 0

planets

planet_t planets[5]

Examples

physics_particle.c.

projection

bj_mat3x3 projection

Examples

physics_particle.c.

renderer

bj_renderer* renderer = 0

stopwatch

bj_stopwatch stopwatch

sun

bj_particle_2d sun = {0}

Examples

physics_particle.c.

window

bj_window* window = 0