/** Meteor Defense
by Liam Peixoto
In this program, players control an orbital spaceship defending the Earth from falling
debris from a recent meteor strike on the Moon.
Players control their ship by using WSAD and Spacebar to fire a projectile.
**/
float shipInitialStart = 0; //Initial start of ship
float shipCurrentPos; //Ship position
float bulletX;
float bulletY;
float bulletWidth;
float bulletHeight;
float randomEnemyInitial = 0; //Asteroid initial start
float enemyY = 185;
float enemyWidth = 0;
float enemyHeight = 0;
float randomGen; //Random number generator
int counter;
boolean shipExist = false; //Boolean for spawning the ship
boolean bulletExist = false; //Boolean for creating a bullet
boolean enemyExist = false; //Boolean for creating an asteroid
void setup()
{
size(400, 400);
frameRate(60);
}
void draw()
{
background(0);
bGStars();
bGPattern();
planet();
if (enemyExist == false);
{
enemy();
}
if (enemyExist == true)
{
enemyMove();
}
if (bulletExist == true)
{
bulletTravel();
}
if (shipExist == false)
{
spaceShipStart();
shipExist = true;
}
if (shipExist == true)
{
spaceShip();
}
}
///////////////////////////////////////////////
///////////////FUNCTIONS///////////////////////
///////////////////////////////////////////////
void enemyMove() //This function moves the enemy towards the ship slowly. Resets the enemy if it moves to a certain Y value
{
fill(50);
ellipse(randomEnemyInitial, enemyY+0.2, enemyWidth, enemyHeight);
enemyY = enemyY+0.2;
enemyWidth = enemyWidth+0.2;
enemyHeight = enemyHeight+0.2;
if (enemyY >= 350)
{
resetEnemy();
}
}
///////////////////////////////////////////////
void resetEnemy() //Resets the enemy to a new random spawn location
{
enemyExist = false;
randomEnemyInitial = 0;
enemyY = 185;
enemyWidth =0;
enemyHeight = 0;
counter = 0;
}
///////////////////////////////////////////////
void enemy() //Ditermines the initial spawn point of the enemy and adds a 5 second delay to spawning an enemy
{
if (randomEnemyInitial == 0)
{
randomGen = random(50, 351);
counter = millis();
}
if (counter >= 5000)
{
randomEnemyInitial = randomGen;
enemyExist = true;
}
}
///////////////////////////////////////////////
void bulletTravel() //Function for bullet movement and collision. Is called when space is pressed. Fires a bullet upwards which shrinks as it moves away.
{
if (bulletWidth <= 0)
{
bulletExist = false;
}
if ((int)bulletY <= (int)enemyY)
{
if (bulletX <= (randomEnemyInitial+(enemyWidth/2)) && bulletX >= (randomEnemyInitial-(enemyWidth/2)))
{
resetEnemy();
bulletExist = false;
}
}
fill(#d60000);
stroke(#ff0000);
strokeWeight(2);
ellipse(bulletX, bulletY-2, bulletWidth-0.5, bulletHeight-0.5);
bulletY = bulletY-2;
bulletWidth = bulletWidth-0.4;
bulletHeight = bulletHeight-0.4;
}
///////////////////////////////////////////////
void keyPressed() //Contains various key pressed functions for the A, D, and SPACEBAR keys. A and D move the ship, while space fires a bullet
{ //Called when keys are pressed
if (key == 'd')
{
shipCurrentPos = shipCurrentPos+15;
if (shipCurrentPos >= 380)
{
shipCurrentPos = 380;
}
}
if (key == 'a')
{
shipCurrentPos = shipCurrentPos-15;
if (shipCurrentPos <= 20)
{
shipCurrentPos = 20;
}
}
if (key == ' ')
{
bulletX = shipCurrentPos;
bulletY = 305;
bulletWidth = 20;
bulletHeight = 20;
bulletExist = true;
}
}
///////////////////////////////////////////////
void spaceShip() //This function creates all graphic aspects of the ship and adds a slight animation to them
{
rectMode(CENTER);
ellipseMode(CENTER);
fill(#470000);
stroke(#7c0101);
strokeWeight(3);
quad((shipCurrentPos-20), 290+3*(sin(radians(frameCount))), (shipCurrentPos-10), 280+3*(sin(radians(frameCount))), (shipCurrentPos+10), 280+3*(sin(radians(frameCount))), (shipCurrentPos+20), 290+3*(sin(radians(frameCount))));
fill(100);
strokeWeight(1);
noStroke();
rect(shipCurrentPos, 305+3*(sin(radians(frameCount))), 75, 30);
fill(110);
triangle((shipCurrentPos-36.5), 320+3*(sin(radians(frameCount))), (shipCurrentPos-100), 315+3*(sin(radians(frameCount))), (shipCurrentPos-36.5), 290+3*(sin(radians(frameCount))));
triangle((shipCurrentPos+36.5), 320+3*(sin(radians(frameCount))), (shipCurrentPos+100), 315+3*(sin(radians(frameCount))), (shipCurrentPos+36.5), 290+3*(sin(radians(frameCount))));
fill(50);
ellipse((shipCurrentPos-18.75), 305+3*(sin(radians(frameCount))), 30, 30);
ellipse((shipCurrentPos+18.75), 305+3*(sin(radians(frameCount))), 30, 30);
fill(#ff6b21);
ellipse((shipCurrentPos-18.75), 305+3*(sin(radians(frameCount))), 23+(sin(radians(frameCount*80))), 23+(sin(radians(frameCount*80))));
ellipse((shipCurrentPos+18.75), 305+3*(sin(radians(frameCount))), 23+(sin(radians(frameCount*80))), 23+(sin(radians(frameCount*80))));
fill(#ffe182);
ellipse((shipCurrentPos-18.75), 305+3*(sin(radians(frameCount))), 15+(sin(radians(frameCount*80))), 15+(sin(radians(frameCount*80))));
ellipse((shipCurrentPos+18.75), 305+3*(sin(radians(frameCount))), 15+(sin(radians(frameCount*80))), 15+(sin(radians(frameCount*80))));
}
///////////////////////////////////////////////
void spaceShipStart() //Figures out the initial start of the ship and stores it's location
{
if (shipInitialStart == 0)
{
shipInitialStart = random(175, 226);
}
fill(100);
shipCurrentPos = shipInitialStart;
}
///////////////////////////////////////////////
void planet() //Creates the Panet beneath the ship
{
fill(#102657);
noStroke();
ellipse(200, 450, 800, 300);
fill(#263e7e);
ellipse(200, 460, 800, 300);
fill(#2b49a1);
ellipse(200, 470, 800, 300);
fill(#004c06);
quad(0, 400, 0, 385, 50, 355, 50, 400);
quad(50, 355, 50, 400, 75, 400, 75, 380);
quad(75, 400, 75, 380, 125, 400, 125, 410);
}
///////////////////////////////////////////////
void bGPattern() //Creates the moon and meteor impact visible in the background
{
fill(100);
noStroke();
ellipse(450, 100, 400, 400);
fill(75);
ellipse(375,175,75,75);
ellipse(325,25,65,65);
for (int i=0; i<300; i++)
{
fill(#d36200);
noStroke();
ellipse(i, i/3, 60, 60);
}
for (int j=0; j<300; j++)
{
fill(#ffdb66);
noStroke();
ellipse(j, j/3, 40, 40);
}
for(int k=0;k<300;k++)
{
fill(#ffecb2);
noStroke();
ellipse(k,k/3,20,20);
}
fill(#d36200);
ellipse(300,100,120+7*(sin(radians(frameCount/4))),120+7*(sin(radians(frameCount/4))));
fill(#ffdb66);
ellipse(300,100,90+5*(sin(radians(frameCount/3))),90+5*(sin(radians(frameCount/3))));
fill(#ffecb2);
ellipse(300,100,60+5*(sin(radians(frameCount/3))),60+5*(sin(radians(frameCount/3))));
}
///////////////////////////////////////////////
void bGStars() //Creates the stars in the background.
{
fill(255);
stroke(255);
point(189, 354);
point(337, 225);
point(153, 43);
point(104, 225);
point(262, 382);
point(73, 77);
point(115, 38);
stroke(#ffe03d);
point(129, 252);
point(52, 209);
point(278, 248);
point(72, 374);
point(252, 27);
stroke(#bc0000);
point(209, 136);
point(117, 60);
point(204, 103);
point(147, 197);
point(91, 348);
point(113, 156);
point(350, 200);
}
