This code uses a heading (an angle to slither towards), the sin()
function (which generates values that alternate from -1
to 1
to move the heading left and right), and the randomGaussian()
function (which generates random numbers centered around 0
to add some randomness to the movement) to create a point that loops around like a worm.
The code also uses the cos()
and sin()
functions to figure out the left and right sides of the worm based on the point and the heading. Then it fills in the space between the previous left and right points and the current left and right points to draw the worm.
And just for fun, that space is colored with a randomly changing value to make it a rainbow worm. 🌈🐛
float heading;
float x;
float y;
float speed = 1;
float thickness = 5;
float r = 128;
float g = 128;
float b = 128;
float prevLeftX;
float prevLeftY;
float prevRightX;
float prevRightY;
void setup() {
size(500, 500);
noSmooth();
frameRate(500);
background(64);
}
void draw() {
heading += sin(radians(frameCount))*3 + randomGaussian()*4
r += random(-10, 10);
g += random(-10, 10);
b = constrain(b, 0, 256);
r = constrain(r, 0, 256);
g = constrain(g, 0, 256);
b += random(-10, 10);
x += cos(radians(heading))*speed;
y += sin(radians(heading))*speed;
if (x < 0) {
x = width;
prevLeftX += width;
prevRightX += width;
}
if (x > width) {
x = 0;
prevLeftX -= width;
prevRightX -= width;
}
if (y < 0) {
y = height;
prevLeftY += height;
prevRightY += height;
}
if (y > height) {
y = 0;
prevLeftY -= height;
prevRightY -= height;
}
float leftX = x + cos(radians(heading-90))*thickness;
float leftY = y + sin(radians(heading-90))*thickness;
float rightX = x + cos(radians(heading+90))*thickness;
float rightY = y + sin(radians(heading+90))*thickness;
noStroke();
fill(r, g, b);
beginShape();
vertex(prevLeftX, prevLeftY);
vertex(leftX, leftY);
vertex(rightX, rightY);
vertex(prevRightX, prevRightY);
endShape(CLOSE);
prevLeftX = leftX;
prevLeftY = leftY;
prevRightX = rightX;
prevRightY = rightY;
}
See the Pen by Happy Coding (@KevinWorkman) on CodePen.
If this seems complicated, try modifying the code. Take this line:
heading += sin(radians(frameCount))*3 + randomGaussian()*4;
This line uses both the sin()
function to generate the winding left and right motion and the randomGaussian()
to add a bit of randomness to that. Try only using the sin()
function or the randomGaussian()
to see how the worm moves.
🐛 🐛 🐛
heading +=
line to change how the worm moves.Your basghetti is now worms!
Happy Coding is a community of folks just like you learning about coding.
Do you have a comment or question? Post it here!
Comments are powered by the Happy Coding forum. This page has a corresponding forum post, and replies to that post show up as comments here. Click the button above to go to the forum to post a comment!