import java.util.ArrayList;
import processing.core.*;


public class D104_Yiting_Long_Assignment3_301183087 extends PApplet{
	float pondWidth;
	float pondHeight;
	float numOfFish;
	float pondX;
	float pondY;
	boolean up;
	boolean down;
	boolean left;
	boolean right;
	float playerSize;
	float maxPlayerSize;
	int state;
	int life;
	int score;
	
	PFont font;
	PFont title;
	public ArrayList <EnemyFish> enemyFishList = new ArrayList<EnemyFish>();
	//EnemyFish enemyFishObject;
	PlayerFish playerFishObject;
	
	public void keyPressed() {
		if (key == CODED) {
		    if (keyCode == UP) 
		      up = true;
		    if (keyCode == DOWN) 
		      down = true;
		    if (keyCode == LEFT) 
		      left = true;
		    if (keyCode == RIGHT) 
		      right = true;
		 }
	}
	public void keyReleased() {
		if (key == CODED) {
			if (keyCode == UP) 
		      up = false;
		    if (keyCode == DOWN) 
		      down = false;
		    if (keyCode == LEFT) 
		      left = false;
		    if (keyCode == RIGHT) 
		      right = false;
		  }
		}
	public void setup(){
		size(600, 400);
		  smooth();
		  state = 0;
		  font = createFont("Arial", 20, true);
		  title = createFont("Tahoma", 40, true);
		  pondWidth = 580;
		  pondHeight = 380;
		  pondX = 10;
		  pondY = 10;
		  score = 0;
		  life = 5;
		  numOfFish = 10; 
		  playerSize = 35;
		  maxPlayerSize = 100;
		  for (int i = 0; i < numOfFish; i++) {
			  PVector randomPosition = new PVector(random(pondX+50, pondWidth-50), random(pondY+70, pondHeight-50));
			  EnemyFish EnemyFishObject = new EnemyFish(this, randomPosition, random(2, 10));
			  enemyFishList.add(EnemyFishObject);
		  }
		  PVector playerPosition = new PVector(pondWidth/2, pondHeight/2); 
		  playerFishObject = new PlayerFish(this, playerPosition , playerSize);
		}

		PlayerFish repawn() {
		  playerSize = 30;
		  PVector playerPosition = new PVector(pondWidth/2, pondY + 50);
		  life--;
		  return new PlayerFish(this, playerPosition , playerSize);
		}

		void destroy(int i) {
		  enemyFishList.remove(i);
		}

		public void draw() {
			switch(state){
			case 0:
				startScreen();
				break;
			case 1:
				playing();
				break;
			case 2:
				win();
				break;
			case 3:
				lose();
				break;
			}
		  }
		void startScreen(){
			background(0);
			fill(106, 168, 222);
			  rect(pondX, pondY, pondWidth, pondHeight);
			  fill(255);
			  textFont(title);
			  textAlign(CENTER);
			  text("Fish! Fish!", pondWidth/2, pondHeight/2);
			  textFont(title, 15);
			  text("Press left mouse button to start game :)",pondWidth/2, pondHeight/2+ 50);
			  if (mousePressed == true && mouseButton == LEFT){
				  state = 1;
			  }
		}
		void playing(){
			background(0);
			  fill(106, 168, 222);
			  rect(pondX, pondY, pondWidth, pondHeight);
			  fill(255);
			  textFont(font);
			  text("Scroe: " + score, 50, 50);
			  text("Life: " + life, 420,50);

			  if (right)
			    playerFishObject.moveRight();
			  if (left)
			    playerFishObject.moveLeft();
			  if (up)
			    playerFishObject.moveUp();
			  if (down)
			    playerFishObject.moveDown();

			  playerFishObject.detectBound();
			  playerFishObject.drawFish();

			  for (int i = 0; i < enemyFishList.size(); i++) {
			    EnemyFish currentEnemy = enemyFishList.get(i);
			    currentEnemy.update();
			    currentEnemy.detectBound();
			    for (int k = 0; k < enemyFishList.size(); k++) {
			      EnemyFish otherEnemy = enemyFishList.get(k);
			      if (playerFishObject.detectCollision(otherEnemy)) {
			        if (playerFishObject.eat(otherEnemy)) {	
			          destroy(k);
			          score += playerFishObject.plus;
			        }
			        else {
			        	playerFishObject.drawWaves();
			        	if (frameCount % 5 == 0){
			        		playerFishObject = repawn();
			        	}
			        }
			      }
			        if (i != k) {
			          if (currentEnemy.detectCollision(otherEnemy)) {
			            currentEnemy.bounce(otherEnemy);
			            if (currentEnemy.detectOffScreen()) {
			              destroy(i);
			            }
			          }
			        }
			      }
			    currentEnemy.drawFish();
			    }
			  //}
			    if (enemyFishList.size() < numOfFish){
			      if (random(0,2)>1){
			    	  EnemyFish EnemyFishObject = new EnemyFish(this, new PVector(pondX+90,random(pondY+50, pondHeight-50)), random(2, 10));
					  enemyFishList.add(EnemyFishObject);
			   
			      }else{
			    	  EnemyFish EnemyFishObject = new EnemyFish(this, new PVector(pondWidth-90, random(pondY+50, pondHeight-50)), random(2, 10));
					  enemyFishList.add(EnemyFishObject);
			      
			      }
			    }
			    if (life <= 0){
			    	state = 3;
			    }
			    if (playerFishObject.size > maxPlayerSize || score >= 500){
			    	state = 2;
	
			    }
		}		
		void win(){
			background(0);
			fill(106, 168, 222);
			  rect(pondX, pondY, pondWidth, pondHeight);
			  fill(255);
			  textFont(title);
			  textAlign(CENTER);
			  text("Congradulation! You Win!", pondWidth/2, pondHeight/2);
			  textFont(title, 15);
			  text("Thank you for playing :)",pondWidth/2, pondHeight/2+ 50);

			
		}
		void lose(){
			background(0);
			fill(247,12,24);
			  rect(pondX, pondY, pondWidth, pondHeight);
			  fill(0);
			  textFont(title);
			  textAlign(CENTER);
			  text("OPPS! YOU LOSE!", pondWidth/2, pondHeight/2);
			  textFont(title, 15);
			  //text(" :)",pondWidth/2, pondHeight/2+ 50);
			
		}

}