Spaceship

Copy and paste the code below into your project!

float ang = HALF_PI; //initial rotation

float x = 200; //initial position X

float y = 150; //initial position Y

float rotateVel = 0.05; // rotation speed

float radius = 2; //movement speed

int spaceShipSz = 20;

//moving vars

boolean sh_movingForward = false;

boolean sh_movingBackwards = false;

boolean sh_turningRight = false;

boolean sh_turningLeft = false;

//bullet variables (off-screen)

float xb = -100;//initial x

float yb = -100;//initial y

float angb = -100;//initial angle

float radiusb = 5; //movement speed for bullet

void setup() {

size(400, 300);

}

void draw() {

background(0);

//draw bullet

//move it first

if (angb != -100) {

//convert polar coordinates to cartesian in order to move (towards pointing angle)

float moveX = radiusb * sin(angb);

float moveY = -radiusb * cos(angb);

 

xb += moveX;

yb += moveY;



}

fill(255, 0, 0);

ellipse(xb, yb, 10, 10);

//draw spaceship

fill(255);



pushMatrix();

translate(x, y);

rotate(ang);

triangle(0, -spaceShipSz, -spaceShipSz/2, spaceShipSz, spaceShipSz/2, spaceShipSz);

popMatrix();

//check movement of spaceShip

float moveX = radius * sin(ang);

float moveY = -radius * cos(ang);

if (sh_movingForward) {

x += moveX;

y += moveY;



}

if (sh_movingBackwards) {

x -= moveX;

y -= moveY;



}

if (sh_turningRight) {

ang += rotateVel;



}

if (sh_turningLeft) {

ang -= rotateVel;



}

//keep spaceship inside (wrap around)

if (x<-spaceShipSz)x=width+spaceShipSz;

if (x>width+spaceShipSz)x=-spaceShipSz;

if (y<-spaceShipSz)y=height+spaceShipSz;

if (y>height+spaceShipSz)y=-spaceShipSz;

}

void keyPressed() {

if (key==’ ‘) {

angb = ang;

xb = x;

yb = y;



}

if (keyCode==RIGHT)sh_turningRight = true;

if (keyCode==LEFT) sh_turningLeft = true;

if (keyCode==UP) sh_movingForward = true;

if (keyCode==DOWN) sh_movingBackwards = true;

}

void keyReleased() {

if (keyCode==RIGHT)sh_turningRight = false;

if (keyCode==LEFT) sh_turningLeft = false;

if (keyCode==UP) sh_movingForward = false;

if (keyCode==DOWN) sh_movingBackwards = false;

}