Ball Class Reference

Representation of the player of the Pong game. More...

List of all members.

Public Member Functions

• Ball (vec3 pos=vec3(), vec3 vel=vec3())
• Ball (float x, float y, float velX=0, float velY=0)
• ~Ball (void)
• vec3 pos ()
• float x ()
• float y ()
• void setPos (vec3 pos)
• void setPos (float x, float y)
• void setVel (vec3 vel=vec3())
• void draw ()
• void update ()
• void update (vec3 vel, vec3 playerPos, PongMode mode)

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Detailed Description

This class stores the position and velocty of the ball, updates and draws it.

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Constructor & Destructor Documentation

Ball::Ball	(	vec3	pos = vec3(),
		vec3	vel = vec3()
	)

Constructor.

Constructor that sets the ball's position and velocity to the given values.

Parameters:

	pos	The ball's initial position. Defaults to (0, 0).
	vel	The ball's initial velocity. Defaults to (0, 0).

See also:

~Ball(float, float, float, float), ~Ball()

Ball::Ball	(	float	x,
		float	y,
		float	velX = 0,
		float	velY = 0
	)

Constructor.

Constructor that sets the ball's position and velocity to the given values.

Parameters:

	x	The ball's initial x-coordinate.
	y	The ball's initial y-coordinate.
	velX	The x-coordinate of the ball's initial velocity. Defaults to 0.
	velY	The y-coordinate of the ball's initial velocity. Defaults to 0.

See also:

~Ball(vec3, vec3), ~Ball()

Ball::~Ball

(

void

)

Default destructor.

See also:

Ball(vec3, vec3), Ball(float, float, float, float)

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Member Function Documentation

float Ball::x

(

)

Returns the ball's current x-coordinate.

Returns:

The ball's current x-coordinate.

See also:

y(), pos(), setPos(vec3), setPos(float, float)

float Ball::y

(

)

Returns the ball's current y-coordinate.

Returns:

The ball's current y-coordinate.

See also:

x(), pos(), setPos(vec3), setPos(float, float)

void Ball::setPos

(

vec3

pos

)

Sets the ball's current position.

Parameters:

pos

The ball's new position.

See also:

setPos(float, float), pos(), x(), y()

void Ball::setPos	(	float	x,
		float	y
	)

Sets the ball's current position.

Parameters:

	x	The ball's new x-coordinate.
	y	The ball's new y-coordinate.

See also:

setPos(float, float), pos(), x(), y()

void Ball::setVel

(

vec3

vel = vec3()

)

Sets the ball's current velocity.

Parameters:

vel

The ball's new velocity. Defaults to (0, 0).

void Ball::update

(

)

Updates the ball's current position using only its own velocity.

Calls proposeMove() to simply move one step ahead according to the ball's current velocity.

See also:

proposeMove(), update(vec3, vec3, PongMode)

void Ball::update	(	vec3	vel,
		vec3	playerPos,
		PongMode	mode
	)

Updates the ball's current position and velocity using external forces.

First updates the ball's current velocity by taking an average of it's own velocity and the velocity of the flow data at its position. Then, if the player is currently in attraction or repulsion mode, the ball's velocity is further adjusted using an appropriate attraction or repulsion force, inversely strong to the distance between ball and player. Finally calls proposeMove() to move one step ahead according to the ball's updated velocity.

See also:

proposeMove(), update()