main.c File Reference

#include "plot.h"
#include "btn_ctrl.h"
#include "get_ticks.h"
#include "sevensegments_ctrl.h"

Include dependency graph for main.c:

Go to the source code of this file.

Data Structures
struct	_obj_description
struct	_entity
struct	_random_state_t

Macros
#define	WINDOW_WIDTH   640
	Pong game ported to the PandA framework by Fabrizio Ferrandi. More...
#define	WINDOW_HEIGHT   480
#define	FRAMES_PER_SECOND   60
#define	FRAME_RATE   1000/FRAMES_PER_SECOND
#define	YELLOW_COLOR   6
#define	RED_COLOR   4
#define	BLUE_COLOR   1
#define	GREEN_COLOR   2
#define	WHITE_COLOR   7
#define	BLACK_COLOR   0
#define	COMPUTER_Y   30
#define	PLAYER_Y   430
#define	PADDLE_WIDTH   32
#define	PADDLE_HEIGHT   8
#define	BALL_DIAMETER   8
#define	PLAYER_SPEED   2
#define	COMPUTER_SPEED   2
#define	BALL_SPEED_MODIFIER   4
#define	BALL_SPEED_Y   2
#define	LEFT   0
#define	RIGHT   1
#define	UP   2
#define	DOWN   3
#define	sgn(x)   ((x<0)?-1:((x>0)?1:0))
#define	rot(x, k)   (((x)<<(k))|((x)>>(32-(k))))

Typedefs
typedef struct _obj_description	obj_description
typedef struct _entity	entity
typedef struct _random_state_t	random_state_t

Functions
unsigned int	random_number (random_state_t *x)
void	random_number_init (random_state_t *x, unsigned int seed)
unsigned char	convert_char_digit_2_sseg (char c)
void	line (int x1, int y1, int x2, int y2, unsigned int color)
void	rect (int left, int top, int right, int bottom, unsigned int color)
void	circle (int x0, int y0, int radius, unsigned int color)
void	rect_fill (int left, int top, int right, int bottom, unsigned int color)
void	output_score ()
_Bool	check_wall_collisions (entity *entity, unsigned char dir)
_Bool	check_ball_collisions (entity *paddle)
void	move_ball ()
_Bool	manage_player_score ()
_Bool	manage_computer_score ()
void	game_initialization ()
_Bool	get_game_input ()
_Bool	manage_ball ()
void	manage_AI ()
_Bool	game_main_loop ()
void	main ()

Variables
entity	computer
entity	player
entity	ball
unsigned char	computer_score
unsigned char	player_score
static int	last_speed = 0
static int	decision = 3
int	timer
static random_state_t	random_state

Macro Definition Documentation

BALL_DIAMETER

#define BALL_DIAMETER   8

Definition at line 36 of file main.c.

Referenced by game_initialization(), manage_computer_score(), and manage_player_score().

BALL_SPEED_MODIFIER

#define BALL_SPEED_MODIFIER   4

Definition at line 43 of file main.c.

Referenced by manage_ball().

BALL_SPEED_Y

#define BALL_SPEED_Y   2

Definition at line 44 of file main.c.

Referenced by get_game_input(), and manage_AI().

BLACK_COLOR

#define BLACK_COLOR   0

Definition at line 25 of file main.c.

Referenced by game_initialization(), and game_main_loop().

BLUE_COLOR

#define BLUE_COLOR   1

Definition at line 22 of file main.c.

Referenced by game_main_loop().

COMPUTER_SPEED

#define COMPUTER_SPEED   2

Definition at line 40 of file main.c.

Referenced by game_initialization(), and manage_AI().

COMPUTER_Y

#define COMPUTER_Y   30

Definition at line 28 of file main.c.

Referenced by game_initialization().

DOWN

#define DOWN   3

Definition at line 49 of file main.c.

FRAME_RATE

#define FRAME_RATE   1000/FRAMES_PER_SECOND

Definition at line 17 of file main.c.

Referenced by game_main_loop().

FRAMES_PER_SECOND

#define FRAMES_PER_SECOND   60

Definition at line 16 of file main.c.

GREEN_COLOR

#define GREEN_COLOR   2

Definition at line 23 of file main.c.

Referenced by game_main_loop().

LEFT

#define LEFT   0

Definition at line 46 of file main.c.

Referenced by check_wall_collisions(), get_game_input(), manage_AI(), and move_ball().

PADDLE_HEIGHT

#define PADDLE_HEIGHT   8

Definition at line 33 of file main.c.

Referenced by game_initialization().

PADDLE_WIDTH

#define PADDLE_WIDTH   32

Definition at line 32 of file main.c.

Referenced by game_initialization().

PLAYER_SPEED

#define PLAYER_SPEED   2

Definition at line 39 of file main.c.

Referenced by game_initialization(), and get_game_input().

PLAYER_Y

#define PLAYER_Y   430

Definition at line 29 of file main.c.

Referenced by check_ball_collisions(), and game_initialization().

RED_COLOR

#define RED_COLOR   4

Definition at line 21 of file main.c.

RIGHT

#define RIGHT   1

Definition at line 47 of file main.c.

Referenced by check_wall_collisions(), get_game_input(), manage_AI(), and move_ball().

rot

#define rot	(		x,
			k
	)		(((x)<<(k))|((x)>>(32-(k))))

Definition at line 89 of file main.c.

Referenced by random_number().

sgn

#define sgn

(

x

)

((x<0)?-1:((x>0)?1:0))

Definition at line 51 of file main.c.

Referenced by line().

UP

#define UP   2

Definition at line 48 of file main.c.

WHITE_COLOR

#define WHITE_COLOR   7

Definition at line 24 of file main.c.

Referenced by game_main_loop().

WINDOW_HEIGHT

#define WINDOW_HEIGHT   480

Definition at line 13 of file main.c.

Referenced by game_initialization(), game_main_loop(), manage_ball(), manage_computer_score(), and manage_player_score().

WINDOW_WIDTH

#define WINDOW_WIDTH   640

Pong game ported to the PandA framework by Fabrizio Ferrandi.

The original code has been taken from http://www.aaroncox.net/tutorials/arcade/PaddleBattle.html Pong was the first game developed by Atari Inc and was designed and built by Allan Alcorn. Further information can be found at https://en.wikipedia.org/wiki/Pong. Random functions taken from http://burtleburtle.net/bob/rand/smallprng.html

Definition at line 12 of file main.c.

Referenced by check_wall_collisions(), game_initialization(), game_main_loop(), manage_computer_score(), and manage_player_score().

YELLOW_COLOR

#define YELLOW_COLOR   6

Definition at line 20 of file main.c.

Referenced by game_main_loop().

Typedef Documentation

entity

typedef struct _entity entity

obj_description

typedef struct _obj_description obj_description

random_state_t

typedef struct _random_state_t random_state_t

Function Documentation

check_ball_collisions()

_Bool check_ball_collisions

(

entity *

paddle

)

Definition at line 249 of file main.c.

References _obj_description::h, PLAYER_Y, _entity::screen_location, _obj_description::w, _obj_description::x, _obj_description::y, and _entity::y_speed.

check_wall_collisions()

_Bool check_wall_collisions	(	entity *	entity,
		unsigned char	dir
	)

Definition at line 223 of file main.c.

References LEFT, RIGHT, _entity::screen_location, _obj_description::w, WINDOW_WIDTH, _obj_description::x, and _entity::x_speed.

circle()

void circle	(	int	x0,
		int	y0,
		int	radius,
		unsigned int	color
	)

Definition at line 169 of file main.c.

References plot(), _obj_description::x, and _obj_description::y.

Here is the call graph for this function:

convert_char_digit_2_sseg()

unsigned char convert_char_digit_2_sseg

(

char

c

)

Definition at line 110 of file main.c.

References test_panda::table.

game_initialization()

void game_initialization

(

)

Definition at line 342 of file main.c.

References BALL_DIAMETER, BLACK_COLOR, computer_score, COMPUTER_SPEED, COMPUTER_Y, decision, get_ticks(), _obj_description::h, last_speed, PADDLE_HEIGHT, PADDLE_WIDTH, player_score, PLAYER_SPEED, PLAYER_Y, random_number_init(), rect_fill(), _entity::screen_location, timer, _obj_description::w, WINDOW_HEIGHT, WINDOW_WIDTH, _obj_description::x, _entity::x_speed, _obj_description::y, and _entity::y_speed.

Here is the call graph for this function:

game_main_loop()

_Bool game_main_loop

(

)

Definition at line 493 of file main.c.

References ball, BLACK_COLOR, BLUE_COLOR, circle(), computer, FRAME_RATE, get_game_input(), get_ticks(), GREEN_COLOR, _obj_description::h, manage_AI(), manage_ball(), output_score(), player, rect(), _entity::screen_location, timer, _obj_description::w, WHITE_COLOR, WINDOW_HEIGHT, WINDOW_WIDTH, _obj_description::x, _obj_description::y, and YELLOW_COLOR.

Here is the call graph for this function:

get_game_input()

_Bool get_game_input

(

)

Definition at line 377 of file main.c.

References BALL_SPEED_Y, btn_ctrl(), BUTTON_DOWN, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_UP, check_wall_collisions(), LEFT, PLAYER_SPEED, RIGHT, _entity::screen_location, _obj_description::x, and _entity::y_speed.

Here is the call graph for this function:

line()

void line	(	int	x1,
		int	y1,
		int	x2,
		int	y2,
		unsigned int	color
	)

Definition at line 117 of file main.c.

References abs, plot(), sgn, _obj_description::x, and _obj_description::y.

Here is the call graph for this function:

main()

void main

(

void

)

Definition at line 526 of file main.c.

References game_initialization(), and game_main_loop().

Here is the call graph for this function:

manage_AI()

void manage_AI

(

)

Definition at line 441 of file main.c.

References abs, BALL_SPEED_Y, check_wall_collisions(), COMPUTER_SPEED, decision, last_speed, LEFT, random_number(), RIGHT, _entity::screen_location, _obj_description::w, _obj_description::x, and _entity::x_speed.

Referenced by game_main_loop().

Here is the call graph for this function:

Here is the caller graph for this function:

manage_ball()

_Bool manage_ball

(

)

Definition at line 404 of file main.c.

References BALL_SPEED_MODIFIER, check_ball_collisions(), _obj_description::h, manage_computer_score(), manage_player_score(), move_ball(), _entity::screen_location, _obj_description::w, WINDOW_HEIGHT, _obj_description::x, _entity::x_speed, _obj_description::y, and _entity::y_speed.

Here is the call graph for this function:

manage_computer_score()

_Bool manage_computer_score

(

)

Definition at line 321 of file main.c.

References BALL_DIAMETER, computer_score, player_score, _entity::screen_location, WINDOW_HEIGHT, WINDOW_WIDTH, _obj_description::x, _entity::x_speed, _obj_description::y, and _entity::y_speed.

Referenced by manage_ball().

Here is the caller graph for this function:

manage_player_score()

_Bool manage_player_score

(

)

Definition at line 301 of file main.c.

References BALL_DIAMETER, computer_score, player_score, _entity::screen_location, WINDOW_HEIGHT, WINDOW_WIDTH, _obj_description::x, _entity::x_speed, _obj_description::y, and _entity::y_speed.

Referenced by manage_ball().

Here is the caller graph for this function:

move_ball()

void move_ball

(

)

Definition at line 289 of file main.c.

References check_wall_collisions(), LEFT, RIGHT, _entity::screen_location, _obj_description::x, _entity::x_speed, _obj_description::y, and _entity::y_speed.

Here is the call graph for this function:

output_score()

void output_score

(

)

Definition at line 203 of file main.c.

References computer_score, convert_char_digit_2_sseg(), player_score, and sevensegments_ctrl().

Here is the call graph for this function:

random_number()

unsigned int random_number

(

random_state_t *

x

)

Definition at line 90 of file main.c.

References _random_state_t::a, _random_state_t::b, _random_state_t::c, _random_state_t::d, and rot.

Referenced by manage_AI(), and random_number_init().

Here is the caller graph for this function:

random_number_init()

void random_number_init	(	random_state_t *	x,
		unsigned int	seed
	)

Definition at line 100 of file main.c.

References _random_state_t::a, _random_state_t::b, _random_state_t::c, _random_state_t::d, and random_number().

Referenced by game_initialization().

Here is the call graph for this function:

Here is the caller graph for this function:

rect()

void rect	(	int	left,
		int	top,
		int	right,
		int	bottom,
		unsigned int	color
	)

Definition at line 161 of file main.c.

References line().

Here is the call graph for this function:

rect_fill()

void rect_fill	(	int	left,
		int	top,
		int	right,
		int	bottom,
		unsigned int	color
	)

Definition at line 194 of file main.c.

References line().

Here is the call graph for this function:

Variable Documentation

ball

entity ball

Definition at line 72 of file main.c.

computer

entity computer

Definition at line 70 of file main.c.

Referenced by game_main_loop().

computer_score

unsigned char computer_score

Definition at line 73 of file main.c.

Referenced by game_initialization(), manage_computer_score(), manage_player_score(), and output_score().

decision

int decision = 3

static

Definition at line 76 of file main.c.

Referenced by game_initialization(), and manage_AI().

last_speed

int last_speed = 0

static

Definition at line 75 of file main.c.

Referenced by game_initialization(), and manage_AI().

player

entity player

Definition at line 71 of file main.c.

player_score

unsigned char player_score

Definition at line 74 of file main.c.

Referenced by game_initialization(), manage_computer_score(), manage_player_score(), and output_score().

random_state

random_state_t random_state

static

Definition at line 108 of file main.c.

timer

int timer

Definition at line 77 of file main.c.