/*******************************************************************************
* @file Obstacle.js contains the obstacle class
* @author Omar Essilfie-Quaye <omareq08+githubio@gmail.com>
* @version 1.0
* @date 24-Aug-2018
*
*******************************************************************************/
/**
* This class describes an obstacle.
*
* @class Obstacle ()
* @author Omar Essilfie-Quaye <omareq08+githubio@gmail.com>
*/
class Obstacle {
/**
* Constructs a new obstacle.
*
* @param {number} x The x position of the obstacle
* @param {number} y The y position of the obstacle
* @param {number} vx The horizontal velocity of the obstacle
* @param {number} w The width of the obstacle
* @param {number} h The height of the obstacle
*/
constructor(x, y, vx, w, h) {
this.x = x;
this.y = y;
this.vx = vx;
this.w = w;
this.h = h;
this.img = null;
this.spriteLoaded = false;
}
/**
* Resets the obstacle
*/
reset() {
this.setPos(width);
this.setVel(fgScrollSpeed);
}
/**
* Sets the horizontal position of the obstacle.
*
* @param {number} x The new horizontal position
*/
setPos(x) {
this.x = x;
}
/**
* Sets the horizontal velocity of the obstacle.
*
* @param {number} vx The new horizontal velocity
*/
setVel(vx) {
this.vx = vx;
}
/**
* Updates the object during the physics loop by moving it to the side. If
* The object goes off the canvas it will be wrapped around to the other
* side.
*/
update() {
this.x += this.vx;
if(this.x < 0) {
this.x = width;
}
}
/**
* Sets the sprite image for the obstacle.
*
* @param {p5.Image} img The new sprite image
*/
setSprite(img) {
this.sprite = img;
this.spriteLoaded = true;
}
/**
* Draws the obstacle at the correct location on the canvas. If the
* obstacle image was not loaded correctly a rectangle will be drawn in its
* place.
*/
draw() {
if(this.spriteLoaded) {
image(this.sprite, this.x, this.y, this.w, this.h);
} else {
stroke(255, 0, 0);
fill(0);
rect(this.x, this.y, this.w, this.h);
}
}
}