/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.D1uF1iZ7IDX/rev.2439
 * 
 * authors: 
 *   
 *   
 *   
 *   
 *   Peter Garrity
 *   

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



/* @pjs preload="/static/uploaded_resources/p.1135/space.png"; */
/* @pjs preload="/static/uploaded_resources/p.1135/space2.png"; */
/* @pjs preload="/static/uploaded_resources/p.1135/spaceship.png"; */
/* @pjs preload="/static/uploaded_resources/p.1135/laser.png"; */
/* @pjs preload="/static/uploaded_resources/p.1135/missile.png"; */
/* @pjs preload="/static/uploaded_resources/p.1135/enemy2.png"; */

PImage space = null;
PImage ship = null;
PImage laser = null;
PImage missile = null;
PImage enemy = null;
int pos_x = 200;
int pos_y = 200;

boolean firing_laser = false;
boolean firing_missile = false;
int ray_x = 0;
int ray_y = 0;
float ray_dx = 1.;
float ray_dy = 0.;
int missile_x = 0;
int missile_y = 0;
float missile_dx = 1.;
float missile_dy = 0.;
int bx1 = 0;
int bx2 = 0;
int by = 0;
int bw = 600;
float accel = 1;
float lf = 0;
float mf = 0;
float angle = 0;
float ex = random(600);
float ey = random(350);
float extimer = 0;
float eytimer = 0;
float ex2 = 0;
float ey2 = 0;

void setup() {  // this is run once.
    noCursor();
    imageMode(CENTER);  
    
    // set the background color
    background(0);
    
    // canvas size (Variable aren't evaluated. Integers only, please.)
    size( 600, 350); 

    bx1 = width / 2;
    bx2 = bx1+bw;
    by = height/2;
    
    // smooth edges
    smooth();
    
    // limit the number of frames per second
    frameRate(30);
    
    // set the width of the line. 
    strokeWeight(12);

    ship = loadImage("/static/uploaded_resources/p.1135/spaceship.png");
    space = loadImage("/static/uploaded_resources/p.1135/space.png");
    space2 = loadImage("/static/uploaded_resources/p.1135/space2.png");
    laser = loadImage("/static/uploaded_resources/p.1135/laser.png");
    missile = loadImage("/static/uploaded_resources/p.1135/missile.png");
    enemy = loadImage("/static/uploaded_resources/p.1135/enemy2.png");

} 

void draw() {  // this is run repeatedly.
     if (keyPressed == true) {
         if (key == CODED) {
             if (keyCode == UP) {
                 accel += cos(angle);
             }
             else if (keyCode == DOWN) {
                 accel -= cos(angle);
             }
         }
     }
     if (keyPressed == true) {
         if (key == ' ') {
             accel += 3*cos(angle);   
         }
        
     }
     accel = accel*.998;
     accel = max(0,min(accel,20)); 

     image(space,bx1,by);
     image(space2,bx2,by);
     bx1 -= accel;
     bx2 -= accel;
     if (bx1+bw/2 < 0) {
         bx1 = bx2 + bw;
    }
    if (bx2+bw/2 < 0) {
        bx2 = bx1 + bw;
    }     
    if (firing_laser == true) {
        ray_x += 20. * ray_dx - accel/2.2;
        ray_y += 20. * ray_dy;
        pushMatrix();
        translate(ray_x,ray_y,0);
        rotate(atan2(ray_dy,ray_dx));
        image(laser,0,0);
        popMatrix();
        if (ray_x > width || ray_x < 0 || ray_y > height || ray_y < 0) {
            firing_laser = false;
        }
    }
    else if (mousePressed == true) {
        if (mouseButton == LEFT) {
             lf += 1
             firing_laser = true;
             ray_x = 300;
             ray_y = 175;
             ray_dx = cos(angle);
             ray_dy = sin(angle);
         }
    }
         
    if (firing_missile == true) {
        missile_x += 10. * missile_dx - accel/2.2;
        missile_y += 10. * missile_dy;
        pushMatrix();
        translate(missile_x,missile_y);
        rotate(atan2(missile_dy,missile_dx));
        image(missile,0,0);
        popMatrix();
        if (missile_x > width || missile_x < 0 || missile_y > height || missile_y < 0) {
            firing_missile = false;
        }
    }
     else if (mousePressed == true) {
        if (mouseButton == RIGHT) {
           mf += 1
           firing_missile = true;
           missile_x = 300;
           missile_y = 175;
           missile_dx = cos(angle);
           missile_dy = sin(angle);
         }
     }
     
     if (keyPressed == true) {
         if (key == CODED) {
             if (keyCode == LEFT) {
                 angle -= .02;
             }
             else if (keyCode == RIGHT) {
                 angle += .02;
             }
         }
     }
     pos_x = (pos_x +19*mouseX)/20;
     pos_y = (pos_y +19*mouseY)/20;
     pushMatrix();
     translate( 300, 175,0);
     rotate(angle);
     image(ship,0,0);
     popMatrix();
     
     
     if (extimer >= 90) {
         ex2 = random(600);
         extimer = 0
     } else {
         extimer += 1
     }
     if (eytimer >= 90) {
         ey2 = random(350);
         eytimer = 0
     } else {
         eytimer += 1
     }
     
     ex = ex + .05 * (ex2 - ex) - accel / 2;
     ey = ey + .05 * (ey2 - ey);
     
     
     image (enemy, ex, ey);
}