Author: Sarah

//Sarah Luongo
//sluongo
//Section A

// This code aims to create a maze with obstacles that are causes of
// environmental problems. As you go through, click on the obstacles to
// clear the path for the turtle and learn some facts along the way.

var walls = [];
var x = 120; // x location of circle
var y = 25; // y location of circle
var obstaclesx = []; // array to hold the x location of the obstacles
var obstaclesy = []; // array to hold the y location of the obstacles
var industry;
var litter;
var light;
var tree;
var car;
var rings;
var obstaclesarealive = [];
var facts = '';
var earth;
var facing = 0;
var turtlecol; // boolean for collision as turtle rotates

function preload() {
    industry = loadImage('https://i.imgur.com/kT2IbbF.png');
    litter = loadImage('https://i.imgur.com/iQ2mdUY.png');
    light = loadImage('https://i.imgur.com/uMRxZlH.png');
    tree = loadImage('https://i.imgur.com/vn4OlLX.png');
    car = loadImage('https://i.imgur.com/i4iop8I.png');
    rings = loadImage('https://i.imgur.com/BAAbVNY.png');
    earth = loadImage('https://i.imgur.com/RfrmGyt.png');
}

function setup() {
    createCanvas(600, 600);
    frameRate(60);
    // Maze lines are are drawn somewhat like a grid, so they are separated by
    // Row and column and seperated further to make up to rows and columns

    // Maze lines (columns) starting from left to right
    maze(140, 50, 140, 90, true);    
    maze(140, 130, 140, 210, true);
    maze(140, 250, 140, 330, true);
    maze(140, 370, 140, 410, true);

    maze(180, 50, 180, 130, true);
    maze(180, 170, 180, 250, true);
    maze(180, 370, 180, 410, true);

    maze(220, 170, 220, 210, true);
    maze(220, 250, 220, 330, true);

    maze(260, 90, 260, 170, true);
    maze(260, 210, 260, 250, true);
    maze(260, 290, 260, 330, true);
    maze(260, 410, 260, 450, true); 

    maze(300, 90, 300, 130, true);
    maze(300, 250, 300, 330, true);
    maze(300, 370, 300, 410, true);

    maze(340, 90, 340, 170, true);
    maze(340, 330, 340, 370, true);

    maze(380, 50, 380, 250, true);

    maze(420, 90, 420, 130, true);
    maze(420, 170, 420, 250, true);
    maze(420, 290, 420, 410, true);

    maze(460, 90, 460, 290, true);
    maze(460, 330, 460, 370, true);

    // Maze lines (rows) starting from top to bottom
    maze(220, 90, 260, 90, false);
    maze(300, 90, 340, 90, false);
    maze(420, 90, 460, 90, false);

    maze(140, 130, 220, 130, false);
	
    maze(220, 170, 340, 170, false);
    maze(380, 170, 420, 170, false);

    maze(180, 210, 340, 210, false);

    maze(220, 250, 260, 250, false);
    maze(300, 250, 380, 250, false);
    
    maze(140, 290, 220, 290, false);
    maze(260, 290, 300, 290, false);
    maze(340, 290, 460, 290, false);

    maze(100, 330, 180, 330, false);
    maze(300, 330, 380, 330, false);
    maze(460, 330, 500, 330, false); 

    maze(140, 370, 300, 370, false);
    maze(340, 370, 380, 370, false);

    maze(180, 410, 260, 410, false);
    maze(300, 410, 460, 410, false);

    // Resize images
    industry.resize(35, 40);
    litter.resize(35, 35);
    light.resize(35, 35);
    tree.resize(30, 30);
    car.resize(35, 35);
    rings.resize(60, 60);
    earth.resize(300, 300);

    obstaclesx = [140, 260, 223, 385, 462, 440]
    obstaclesy = [210, 53, 333, 255, 150, 410]

    obstaclesarealive = [true, true, true, true, true, true]
}

function draw() {
    background(220);
    
    // Maze background
    strokeWeight(1);
    stroke(0);
    fill(255);
    square(100, 50, 400);

    for (var i = 0; i < walls.length; i++) {
        line(walls[i].x1, walls[i].y1, walls[i].x2, walls[i].y2);
    }

    // Maze start and finish
    stroke(255);
    strokeWeight(1);
    line(101, 50, 139, 50);
    line(461, 450, 499, 450);
    
    noStroke();
    turtle(x, y);

    if (obstaclesarealive[0] == true) {
        image(industry, 140, 210);
    }
    if (obstaclesarealive[1] == true) {  
        image(litter, 260, 53);
    }
    if (obstaclesarealive[2] == true) {  
        image(light, 223, 333);
    }
    if (obstaclesarealive[3] == true) {  
       image(tree, 385, 255);
    }
    if (obstaclesarealive[4] == true) {  
        image(car, 462, 150);
    }
    if (obstaclesarealive[5] == true) {  
        image(rings, 440, 410);
    }

    // If statements to move and rotate the turtle:
    // Key 'w' moves up
    if (keyIsDown(87)) {
	facing = 180;
	turtlecol = false;
	y--;
	if (collision()) {
	    y++;
	}
    // Key 'a' moves left
    } else if (keyIsDown(65)) {
	facing = 90;
	turtlecol = true;
	x--;
	if (collision()) {
	    x++;
	}
    // Key 's' moves down
    } else if (keyIsDown(83)) {
	facing = 0;
	turtlecol = false;
	y++;
	if (collision()) {
	    y--;
	}
    // Key 'd' moves right
    } else if (keyIsDown(68)) {
	facing = -90;
	turtlecol = true;
	x++;
	if (collision()) {
	    x--;
	}
    }
    
    // Text attributes and placement after each obstacle is clicked
    textSize(15);
    fill(0);                         
    text(facts, 100, 500);
}

function turtle(a, b) {
    push();
    translate(a, b);
    // Rotate based on direction it's traveling
    rotate(radians(facing));

    // Head
    fill(153, 200, 130);
    ellipse(0, 9, 7, 8);

    // Tail
    strokeWeight(3);
    stroke(153, 200, 130);
    line(0, -10, 0, -8); 

    // Legs
    strokeWeight(4);
    line(-7, -8, -6, -7);
    line(7, 8, 6, 7);
    line(-7, 8, -6, 7);
    line(7, -8, 6, -7);

    noStroke();

    // Eyes
    fill(88, 130, 96);
    circle(-2, 11, 2); 
    circle(2, 11, 2);

    // Body
    fill(204, 223, 156);
    circle(0, 0, 16);
    pop();
}

// Maze object 
function maze(xone, yone, xtwo, ytwo, pos) {
    var mz = {x1: xone, y1: yone, x2: xtwo, y2: ytwo, p: pos}
    walls.push(mz);
}

// Function that deals with all collision types
function collision() {
    var xoffset = (turtlecol)? 12 : 13;
    var yoffset = (turtlecol)? 13 : 12;

    // Collision against maze border
    if (x == 111 || x == 489 || y == 65 || y == 430) {
        if (x >= 112 & x <= 128 && y <= 65) {
	    return false;
	}
	// End of maze
	if (x >= 450 & x <= 488 && y == 430) {
            endscreen();
        }
	return true;
    }
    
    // Collision against maze walls
    for (var i = 0; i < walls.length; i++) {
        if (walls[i].p == true) {
            if ((y+yoffset) > walls[i].y1 & (y-yoffset) <= walls[i].y2) {
	        if ((x+xoffset) >= walls[i].x1 && (x-xoffset) <= walls[i].x1) {
		    return true;
		}
	    }
	} else {
            if ((x+xoffset) >= walls[i].x1 & (x-xoffset) <= walls[i].x2) {
	        if ((y+yoffset) >= walls[i].y1 && (y-yoffset) <= walls[i].y1) {
		    return true;
		}
	    }
	}
    }
    return obstacleCollision();
}

// Collision against images
function obstacleCollision() {
    var xoffset = (turtlecol)? 12 : 13;
    var yoffset = (turtlecol)? 13: 12;

    for (var i = 0; i < obstaclesx.length; i++) {
        if ((x+xoffset) >= obstaclesx[i] & (x-xoffset) <= (obstaclesx[i] + 40)) {
	    if ((y+yoffset) >= obstaclesy[i] && (y-yoffset) <= (obstaclesy[i] + 40)) {
	        return obstaclesarealive[i];
	    }
	}
    }
    return false;
}

// Facts from the industry, electricity, and transportation obstacles come from
// the following website:
// https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emissions
// Litter obstacle fact:
// https://www.metrobinhire.com.au/blog/9-surprisingly-and-alarming-facts-about-littering
// Deforestation obstacle fact:
// https://www.greenmatters.com/p/why-is-deforestation-a-problem
// 6 Pack Ring obstacle fact:
// https://www.nationalgeographic.com/environment/2018/09/news-plastic-six-pack-rings-alternatives-history/#close
function mousePressed() {
    if (mouseX >= 140 & mouseX <= 175 && mouseY >= 210 && mouseY <= 250) {
        obstaclesarealive[0] = false;
	facts = 'Greenhouse gas emissions from industry primarily come \nfrom burning fossil fuels for energy, as well as greenhouse \ngas emissions from certain chemical reactions necessary to \nproduce goods from raw materials.';
    }
    if (mouseX >= 260 & mouseX <= 295 && mouseY >= 53 && mouseY <= 88) {
	obstaclesarealive[1] = false;
	facts = 'Some alarming quick facts about littering: almost all litter \nends up in the ocean. The most littered item is fast food \npackaging many animals die from littering. Cigarette butts \nmake up 1/2 the amount of littered objects.';
	    
    }
    if (mouseX >= 223 & mouseX <= 258 && mouseY >= 333 && mouseY <= 368) {
        obstaclesarealive[2] = false;
	facts = 'Electricity production generates the second largest share \n(26.9% in 2018) greenhouse gas emissions. Approximately \n63 percent of our electricity comes from burning fossil fuels, \nmostly coal and natural gas.';
    }
    if (mouseX >= 385 & mouseX <= 415 && mouseY >= 255 && mouseY <= 285) {
        obstaclesarealive[3] = false;
	facts = 'Deforestation has many major (and way too often unforeseen) \nimpacts on the environment. There’s soil erosion, water cycle \ndisruption, greenhouse gas emissions, and biodiversity \nlosses with every tree that is chopped, and the planet feels its \nimpact.';
    }
    if (mouseX >= 462 & mouseX <= 499 && mouseY >= 150 && mouseY <= 185) {
        obstaclesarealive[4] = false;
	facts = 'The transportation sector generates the largest share (28.2%\nin 2018) of greenhouse gas emissions. Greenhouse gas \nemissions from transportation primarily come from burning \nfossil fuel for our cars, trucks, ships, trains, and planes.';
    }
    if (mouseX >= 440 & mouseX <= 500 && mouseY >= 410 && mouseY <= 440) {
        obstaclesarealive[5] = false;
	facts = 'Almost 700 species are now known to have been harmed \nby ocean plastic, and every year, around 18 billion pounds \nof plastic flows into the ocean. Producing plastic rings also \nrequires using petroleum—around eight percent of global \noil production is to make plastic.';
    }
}

function endscreen() {
    facts = '';
    fill(0, 0, 102);
    push();
    translate(width/2, height/2);
    square(-300, -300, 600);
    image(earth, -150, -200);
    textSize(50);
    fill(255);
    textAlign(CENTER);
    text('THE END', 0, 200);
    pop();
    noLoop();
}

// Code used to make the building/first obstacle
/*function industry() {
     // Building
     fill(139, 69, 19);
     rect(145, 225, 8, 20);
     rect(153, 234, 20, 11);

     //CO2
      fill(70);
      circle(149, 222, 5);
      circle(153, 220, 8);
      circle(159, 214, 11);
}*/