New to classes and my class doesn't work. Why doesn't it? - class

Question

In my program, I want to have triangles that spin and follow your mouse position. I had it working but it was ugly because I didn't use any classes (I'm new) and just pasted the triangle over and changed the variables. This is the class I came up with.
class Enemy {
float x = random(-width, 0);
float y = random(0, height);
float x1;
float x2 = -20;
float x3 = 20;
float y1 = (+(sqrt(3)/3)*40);
float y2 = (-(sqrt(3)/3)*40);
float y3 = (-(sqrt(3)/3)*40);
float speed;
float slope;
float atanSlope;
Enemy(float tempSpeed) {
speed = tempSpeed;
}
void rotateEnemy() {
float x1Rotated = rotateX(x1, y1, theta2, 0);
y1 = rotateY(x1, y1, theta2, 0);
x1 = x1Rotated;
float x2Rotated = rotateX(x2, x2, theta2, 0);
x2 = rotateY(x2, x2, theta2, 0);
x2 = x2Rotated;
float x3Rotated = rotateX(x3, x3, theta2, 0);
x3 = rotateY(x3, x3, theta2, 0);
x3 = x3Rotated;
}
void move() {
slope = (y - mouseY)/(x-mouseX);
atanSlope = atan(slope);
if (slope < 0 && mouseY < y ) {
x += cos(atanSlope)*(speed + speedChange);
y += sin(atanSlope)*(speed + speedChange);
} else if (slope >= 0 && mouseY < y) {
x -= cos(atanSlope)*(speed + speedChange);
y -= sin(atanSlope)*(speed + speedChange);
} else if (slope > 0) {
x += cos(atanSlope)*(speed + speedChange);
y += sin(atanSlope)*(speed + speedChange);
} else {
x -= cos(atanSlope)*(speed + speedChange);
y -= sin(atanSlope)*(speed + speedChange);
}
}
void drawEnemy() {
translate(x, y);
triangle(x1, y1, x2, x2, x3, x3);
translate(-x, -y);
}
void collisionDetect() {
if (abs(mouseX-x) + abs(mouseY-y) < 80)
if (isDeadly) {
respawn();
energy -= height/16;
points += 500;
} else
energy = 0;
}
void respawn() {
int ranQuadrant1 = (int)random(0, 2);
int ranSide1 = (int)random(0, 2);
if (ranQuadrant1 == 0)
if (ranSide1 == 0)
x = random(0, -width/2);
else {
x = random(width, 3*width/2);
y = random(-height/2, 3*height/2);
} else
if (ranSide1 == 0)
y = random(0, -height/2);
else {
y = random(height, 3*height/2);
x = random(-width/2, 3*width/2);
}
}
}
And I use it like this
ArrayList<Enemy> enemies = new ArrayList<Enemy>();
void setup() {
for (i = 0; i<difficulty; i++);
enemies.add(new Enemy(i*5));
for (i = 0; i<enemies.size()-1; i++)
enemies.get(i).respawn();
}
void draw() {
for(i = enemies.size()-1; i>=0; i--) {
enemies.get(i).rotateEnemy();
enemies.get(i).move();
enemies.get(i).drawEnemy();
enemies.get(i).collisionDetect();
}
When I run it, the triangles don't draw. Not only that, some ellipses I wrote that come right after trying to draw the triangles don't draw either. The square that follows your mouse along with a timer and other things DO draw though. Please help. Thank you!
Now, this isn't the whole program. I'm making a game for a project and these triangles are the enemies.
If you want to see the whole program for context/if I didn't put enough, I put it in a pastebin: https://pastebin.com/Bfd4Fk6t

Answer 1

Okay I figured it out, turns out I'm a dummy.
Look at the rotateEnemy function for the 2nd and 3rd points. There are no y's only x's. I was using a lot of find and replace when copying it over so I must have gotten rid of the y's and replaced them with x's. Another error is in drawEnemy, I draw the triangle with parameters (x1,y1,x2,x2,x3,x3). No y's again. Geez I'm a smart guy lol.