//Main code//
Player me;
Timer timer;
PImage bg, intropic, gameover, player, food1, food2, food3, food4, food5, food6; 
int randomFood = (int)random(1, 100);
int Intro = 0;
int RunGame = 1;
int GameOver = 2;
int gameState = Intro;
Food[] food;
int lost;

void setup() {
    size(360, 540);
    background(0);
    smooth(); 
    frameRate(60);
    Food[] food = new Food[100];
    bg = loadImage ("bg.png");
    intropic = loadImage ("introbg.jpg");
    gameover = loadImage ("gameoverbg.jpg");
    player = loadImage ("squirrel.jpg"); 
    food1 = loadImage ("basicgood1.jpg"); 
    food2= loadImage ("basicbad2.jpg");
    food3= loadImage ("verygood1.jpg");
    food4= loadImage ("verybad2.jpg");
    food5= loadImage ("extremelygood1.jpg");
    food6= loadImage ("extremelybad2.jpg");
    timer = new Timer(1000);
    timer.start();
    me = new Player(); 
    me.speedChange();
}
//Sets the three game states
void draw() {
    if (gameState == Intro) 
    {
        intro();
    }
    if (gameState == RunGame) {
        rungame();
    }
    if (gameState == GameOver) {
        gameover();
    } 

    // Check collisions
    for (int i = 0; i < food.length; i++)
    {
        float distance = dist(me.xPos, me.yPos, food[i].xPos, food[i].yPos);
        if (distance < 25)
        {
            if (food[i].type.equals("basicGood"))
            {
                me.speed++;
            } 

            if (food[i].type.equals("basicBad"))
            {
                me.speed -= 5;
            } 

            if (food[i].type.equals("veryGood"))
            {
                me.speed += me.speed;
            } 

            if (food[i].type.equals("veryBad"))
            {
                me.speed = me.speed - 10;
            } 

            if (food[i].type.equals("extremelyGood"))
            {
                me.speed = me.speed + 10;
            } 

            if (food[i].type.equals("extremelyBad"))
            {
                me.speed = me.speed - 17;
            }
        }
        /*
        if (food[i].type.equals("basicGood").yPos > 550)
         {
         lost++;
         }
         
         if (food[i].type.equals("veryGood").yPos > 550)
         {
         lost++;
         }
         
         if (food[i].type.equals("extremelyGood").yPos > 550)
         {
         lost++;
         }
         */
    }

    if (lost >= 3)
    {
        gameover();
    }
}

//Picks a random value from food array to drop and displays food
void dropfood()
{
    randomFood = (int) random(1, 100);
    //int randomFood = random(0, 100); //this gets a random element from the food array
    while (food[randomFood].getY () >= 0)
    {
        randomFood = (int) random(1, 100);
    }
    food[randomFood].display(); 
    food[randomFood].move(); 
    //food[randomFood].setY(???);
}
//The introduction picture -- will notify player to click anywhere
//to begin (this is taken care of by the mousepressed function below)
void intro() {
    imageMode(CORNER);
    image (intropic, 0, 0);
} 

//The gameplay  
void rungame()
{
    //Displays background
    imageMode(CORNER);
    image(bg, 0, 0);

    //Displays player
    me.display();

    //Drops a piece of food every second
    if (timer.isFinished()) 
    {
        // setY(add or subtract of images --> double check height/2 **make them all same height); 
        dropfood();
    }

    //Assigned values to the different types of food being dropped every second
    //to ensure a certain probability of each type (35% basics, 25% verys, 5% extremes)
    for (int i=0; i<food.length; i++) {

        if (randomFood >= 1 && randomFood <= 28)
        {
            food[i] = new Food("basicGood");
        }

        if (randomFood >= 29 && randomFood <= 68)
        {
            food[i] = new Food("basicBad");
        }

        if (randomFood >= 69 && randomFood <= 80)
        {
            food[i] = new Food("veryGood");
        }

        if (randomFood >= 81 && randomFood <= 92)
        {
            food[i] = new Food("veryBad");
        }

        if (randomFood >= 93 && randomFood <= 96)
        {
            food[i] = new Food("extremelyGood");
        }

        if (randomFood >= 97 && randomFood <= 99)
        {
            food[i] = new Food("extremelyBad");
        }
    }
}

void gameover() {

    imageMode(CORNER);
    image(gameover, 0, 0); 
    //because of the mousepressed function, if the player clicks
    //anywhere, then the game will restart
} 

//Starts and/or resets game 
void mousePressed() {
    if (gameState == GameOver || gameState == Intro) {
        gameState = RunGame; // start the game
    }
}

//Player Controls: Left and right only
void keyPressed ()
{ 
    if (key==CODED)
    {
        if (keyCode == RIGHT)
        { 
            me.xPos = me.xPos + me.speed;
        }

        if (keyCode == LEFT)
        {
            me.xPos = me.xPos - me.speed;
        }
    }
}
//Player class//
class Player
{
    float xPos;
    float yPos;
    float speed;

    Player ()
    {
        xPos= 180;
        yPos = 500;
        speed = 20;
    }

    //Displays the player 
    void display ()
    {
        imageMode(CENTER);
        image (player, xPos, yPos);
    }

    void speedChange() {
        //The lowest reduction in speed that a player can reach
        if (speed < 3)
        {
            speed = 3;
        }
    }
}
//Food class//
class Food
{
    // Food properties
    float xPos;
    float yPos;
    float speed;
    String type;


    //Constructor
    Food (String t)
    {
        type = t;
        xPos = random(0, width);
        yPos = -200; //starts off screen
        speed = random(1, 5);
    } 

    void setY(int passedY)
    {
        yPos = passedY;
    }

    float getY()
    {
        return yPos;
    }

    void move() 
    {
        yPos = yPos + speed; 

        if (yPos + 54 > height)
        {
            yPos = -200;
        }
    }
    //Displays the images of each different types of food
    void display ()
    {
        imageMode(CENTER);
        if (type.equals("basicGood"))
        {
            image(food1, random(0, width), -200);
        }
        if (type.equals("basicBad"))
        {
            image(food2, random(0, width), -200);
        }
        if (type.equals("veryGood"))
        {
            image(food3, random(0, width), -200);
        }
        if (type.equals("veryBad"))
        {
            image(food4, random(0, width), -200);
        }
        if (type.equals("extremelyGood"))
        {
            image(food5, random(0, width), -200);
        }
        if (type.equals("extremelyBad"))
        {
            image(food6, random(0, width), -200);
        }
    }
}
//Timer class//
class Timer {

    int savedTime; // When Timer started
    int totalTime; // How long Timer should last

    Timer(int tempTotalTime) {
        totalTime = tempTotalTime;
    }

    // Starting the timer
    void start() {
        // When the timer starts it stores the current time in milliseconds.
        savedTime = millis();
    }

    // The function isFinished() returns true if 5,000 ms have passed. 
    // The work of the timer is farmed out to this method.
    boolean isFinished() { 
        // Check how much time has passed
        int passedTime = millis() - savedTime;
        if (totalTime%passedTime == 0) {
            return true;
        } 
        else {
            return false;
        }
    }
}