cglp.c File Reference

Functions
Collision	rect (float x, float y, float w, float h)
Collision	box (float x, float y, float w, float h)
	Draw a box. Returns information on objects that collided while drawing. More...
Collision	line (float x1, float y1, float x2, float y2)
	Draw a line. Returns information on objects that collided while drawing. More...
Collision	bar (float x, float y, float length, float angle)
	Draw a bar. Returns information on objects that collided while drawing. More...
Collision	arc (float centerX, float centerY, float radius, float angleFrom, float angleTo)
	Draw a arc. Returns information on objects that collided while drawing. More...
Collision	text (char *msg, float x, float y)
	Draw a text. Returns information on objects that collided while drawing. More...
Collision	character (char *msg, float x, float y)
void	play (int type)
void	enableSound ()
	Enable playing background music and sound effects. More...
void	disableSound ()
	Disable playing background music and sound effects. More...
void	toggleSound ()
	Toggle sound playing flag. More...
void	addScore (float value, float x, float y)
void	particle (float x, float y, float count, float speed, float angle, float angleWidth)
	Add particles. More...
EMSCRIPTEN_KEEPALIVE void	setButtonState (bool left, bool right, bool up, bool down, bool b, bool a)
float	rnd (float low, float high)
	Get a random float value of [low, high). More...
int	rndi (int low, int high)
	Get a random int value of [low, high - 1]. More...
void	consoleLog (char *format,...)
float	clamp (float v, float low, float high)
	Clamp a value to [low, high]. More...
float	wrap (float v, float low, float high)
	Wrap a value to [low, high). More...
char *	intToChar (int v)
	Convert a value of type int to a value of type char*. More...
void	gameOver ()
	Transit to the game-over state. More...
void	goToMenu ()
	Go to the game selection menu screen. More...
void	restartGame (int gameIndex)
	Restart another game specified by gameIndex. More...
EMSCRIPTEN_KEEPALIVE void	initGame ()
EMSCRIPTEN_KEEPALIVE void	updateFrame ()

Variables
int	ticks
	A variable incremented by one every 1/60 of a second (readonly). More...
float	score
	Game score. More...
float	difficulty
int	color
float	thickness
	Set the thickness for drawing line(), bar() and arc(). More...
float	barCenterPosRatio
CharacterOptions	characterOptions
	Options for drawing text() and character(). More...
bool	hasCollision
float	tempo = 120
	Tempo of background music. More...
Input	input
	Input state from the buttons (readonly). More...
Input	currentInput
	Input state (used to get input on title screen) (readonly). More...
bool	isInMenu
	Set to true when the menu screen is open (readonly). More...

Function Documentation

addScore()

void addScore	(	float	value,
		float	x,
		float	y
	)

Add score points and draw additional score on the screen. You can also add score points simply by adding the score variable.

arc()

Collision arc	(	float	centerX,
		float	centerY,
		float	radius,
		float	angleFrom,
		float	angleTo
	)

Draw a arc. Returns information on objects that collided while drawing.

bar()

Collision bar	(	float	x,
		float	y,
		float	length,
		float	angle
	)

Draw a bar. Returns information on objects that collided while drawing.

box()

Collision box	(	float	x,
		float	y,
		float	w,
		float	h
	)

Draw a box. Returns information on objects that collided while drawing.

character()

Collision character	(	char *	msg,
		float	x,
		float	y
	)

Draw a pixel art. Returns information on objects that collided while drawing. You can define pixel arts (6x6 dots) of characters with characters array.

clamp()

float clamp	(	float	v,
		float	low,
		float	high
	)

Clamp a value to [low, high].

consoleLog()

void consoleLog	(	char *	format,
			...
	)

Print a message to the console (the same arguments as for printf can be used).

disableSound()

void disableSound

(

)

Disable playing background music and sound effects.

enableSound()

void enableSound

(

)

Enable playing background music and sound effects.

gameOver()

void gameOver

(

)

Transit to the game-over state.

goToMenu()

void goToMenu

(

)

Go to the game selection menu screen.

initGame()

EMSCRIPTEN_KEEPALIVE void initGame

(

)

Initialize all games and go to the game selection menu screen. This function must be called from the machine dependent setup step.

intToChar()

char * intToChar

(

int

v

)

Convert a value of type int to a value of type char*.

line()

Collision line	(	float	x1,
		float	y1,
		float	x2,
		float	y2
	)

Draw a line. Returns information on objects that collided while drawing.

particle()

void particle	(	float	x,
		float	y,
		float	count,
		float	speed,
		float	angle,
		float	angleWidth
	)

Add particles.

play()

void play

(

int

type

)

Play a sound effect. Type are COIN, LASER, EXPLOSION, POWER_UP, HIT, JUMP, SELECT, CLICK and RANDOM.

rect()

Collision rect	(	float	x,
		float	y,
		float	w,
		float	h
	)

Draw a rectangle. Returns information on objects that collided while drawing.

restartGame()

void restartGame

(

int

gameIndex

)

Restart another game specified by gameIndex.

rnd()

float rnd	(	float	low,
		float	high
	)

Get a random float value of [low, high).

rndi()

int rndi	(	int	low,
		int	high
	)

Get a random int value of [low, high - 1].

setButtonState()

EMSCRIPTEN_KEEPALIVE void setButtonState	(	bool	left,
		bool	right,
		bool	up,
		bool	down,
		bool	b,
		bool	a
	)

Set whether or not each button is pressed. This function must be called from the machine dependent input handling step.

text()

Collision text	(	char *	msg,
		float	x,
		float	y
	)

Draw a text. Returns information on objects that collided while drawing.

toggleSound()

void toggleSound

(

)

Toggle sound playing flag.

updateFrame()

EMSCRIPTEN_KEEPALIVE void updateFrame

(

)

Update game frames every 1/60 second. This function must be called from the machine dependent update step.

wrap()

float wrap	(	float	v,
		float	low,
		float	high
	)

Wrap a value to [low, high).

Variable Documentation

barCenterPosRatio

float barCenterPosRatio

A value from 0 to 1 that defines where the center coordinates are on the bar(), default: 0.5.

characterOptions

CharacterOptions characterOptions

Options for drawing text() and character().

color

int color

Set the color for drawing rectangles, particles, texts, and characters. Setting the color prior to text() and character() will recolor the pixel art. Use color = BLACK to restore and use the original colors. Colors are WHITE, RED, GREEN, YELLOW, BLUE, PURPLE, CYAN, BLACK, LIGHT_* and TRANSPARENT.

currentInput

Input currentInput

Input state (used to get input on title screen) (readonly).

difficulty

float difficulty

A variable that is one at the beginning of the game, two after 1 minute, and increasing by one every minute (readonly).

hasCollision

bool hasCollision

If hasCollision is set to true, the drawn rectangle will have no collision with other rectangles. Used to improve performance.

input

Input input

Input state from the buttons (readonly).

isInMenu

bool isInMenu

Set to true when the menu screen is open (readonly).

score

float score

Game score.

tempo

float tempo = 120

Tempo of background music.

thickness

float thickness

Set the thickness for drawing line(), bar() and arc().

ticks

int ticks

A variable incremented by one every 1/60 of a second (readonly).