package lilWorld;

import java.util.ArrayList;
import java.util.List;

import processing.core.PApplet;
import processing.core.PVector;

	public class DrifterSystem {
	
		Drifter temp;
		Creeper tempC;
		
		
		Drifter d;
	    List<Drifter>allDrifters;
		PApplet parent;
		int creatureNo;
		float G = 0.1f;
		int size1;
		int size2;
		float crPlus = 0;
		float forceVal = 12;


    DrifterSystem(PApplet p, int n, int s1, int s2) 
	{
		allDrifters = new ArrayList<Drifter>();
		parent= p;
		creatureNo = n;
		size1 = s1;
		size2 = s2;
		for(int i = 0;i < creatureNo; i++)	
		{	
			PVector a = new PVector(0.0f,0.0f);
			PVector v = new PVector(parent.random(-3,3),parent.random(-3,3));
			PVector l = new PVector(parent.random(parent.width),parent.random(parent.height/4));
			Drifter c = new Drifter(l, a, v, (int)parent.random(size1,size2), parent);
			System.out.println("new creature here " + i);
			//System.out.println(c.graphicsNum + "THIS IS THE NUMBER");
			allDrifters.add((Drifter) c);
		}
	}

	public void pushDrifters()
	{
		for (int i = 0; i < allDrifters.size(); i++)
		{
			d = allDrifters.get(i); // pick a creeper
			//System.out.println(c.getClass().toString());

			for(int j = 0; j <allDrifters.size(); j++) // step through array
			{
				if (j != i) //make sure not to compare with self
				{
				    temp = (Drifter) allDrifters.get(j); //get a creeper
				    //System.out.println("Check 2 Drifters");
					if (checkProx(temp, d))
					{
						if (d.loc.x == temp.loc.x && d.loc.y == temp.loc.y)//creatures are in same spot
						{
							System.out.println("a direct hit!");
							PVector dir = new PVector(parent.random(-15,15),parent.random(-15,15));
							dir.normalize(); 
							float force = -1 * forceVal * G;            // Repelling force is inversely proportional to distance
							dir.mult(force); 
							temp.applyForce(dir);
							//temp.changeColor();
							//System.out.println(c.loc+" "+temp.loc+" should be the same");

						}
						else//creatures are just near each other
						{
							if(d.isReady() && temp.isReady())//check if ready to mate
							{
								makeBabies(d.loc);
								d.babyTime =false;
								temp.babyTime = false;
								PVector dir = PVector.sub(d.loc,temp.loc);
								float dist = dir.mag();                       // Distance between objects
								dir.normalize();                           // Normalize to between 0 and 1
								dist = parent.constrain(dist,10,100);             // Keep distance within a reasonable range
								float force = -1 * forceVal * G / (dist * dist);            // Repelling force is inversely proportional to distance
								dir.mult(force);                           // Get force vector --> magnitude * direction
								temp.applyForce(dir);
								d.startTime(500);
								temp.startTime(500);
							}
							else
							{
								//System.out.println("repelling!");
								//System.out.println(c.loc+" "+temp.loc+" should be different");
								PVector dir = PVector.sub(d.loc,temp.loc); // Calculate direction of force
								float dist = dir.mag();                       // Distance between objects
								dir.normalize();                           // Normalize to between 0 and 1
								dist = parent.constrain(dist,10,100);             // Keep distance within a reasonable range
								float force = -1 * forceVal * G / (dist * dist);            // Repelling force is inversely proportional to distance
								dir.mult(force);                           // Get force vector --> magnitude * direction
								temp.applyForce(dir);
								//temp.changeColor();
								//d.changeColor();
								//d.startTime(500);
								//temp.startTime(500);
							}

						}

					}
				}

			}

		}
	}
    
	public void moveAllDrifters()
	{
		for(int i = 0;i < allDrifters.size(); i++)
		{
			temp = allDrifters.get(i);
			temp.move();
		}
			
	}
	
	
	
	public void showAllDrifters()
	{
		for(int i = 0;i < allDrifters.size(); i++)
		{
			//System.out.println("HERE");
			d =  allDrifters.get(i); // pick a drifter
			d.show();
		}
			
	}
	
	
	public void makeBabies(PVector location)
	{
		int numberOfBabies = (int) parent.random(0, Vars.drifterBabies);
		System.out.println(numberOfBabies+" BABIES BABIES!");
		for(int i = 0; i<numberOfBabies; i++)
		{
			PVector a = new PVector(0.0f,0.0f);
			PVector v = new PVector(parent.random(-0.25f,0.25f),parent.random(0,0.5f));
			PVector l = new PVector(location.x, location.y+(i+1)*5);
			Drifter baby = new Drifter(l, a, v, 10, parent);
			baby.alphaFill = 75;
			allDrifters.add(baby);
		}
	}
	
	
	
	public Boolean checkProx(Creature a, Creature c)
	{
		float aR; 
		aR = a.getSize()/2; // get radius temp
		//System.out.println("this is radius of a " + aR);
		float cR = c.getSize()/2; //get radius c
	    //cr+= crPlus;
		//System.out.println("this is radius of c " + cr);
		float tempR = cR + aR;
	 
	   if (PApplet.dist(c.loc.x, c.loc.y,a.loc.x, a.loc.y)<= tempR)
	    {
	    	//System.out.println("NEAR!!!!!!");
	    	return true; //they are near each other
	    	
	    }
	    else
	    {	
	     //System.out.println("not near!");
	    return false; //they are not near each other
	    }
	    
	}
	
	public void growUp()
	{
			for (int i = 0; i < allDrifters.size(); i++)
			{
				d =  allDrifters.get(i);
				d.grow();
			}	
	}
	

	public void meetReaper()
	{
		for (int i = 0; i < allDrifters.size(); i++)
		{
			d =  allDrifters.get(i); // pick a drifter
			if(d.lifespan.isFinished())
			{
				//System.out.println("DIE");
				allDrifters.remove(i);
			}
			//System.out.println("still alive!");
			
		}
	}

	public void eatCreepers(CreeperSystem other)
	{
		for (int i = 0; i < allDrifters.size(); i++)
		{
			d =  allDrifters.get(i); // pick a drifter
			for(int j = 0; j <other.allCreepers.size(); j++) // step through array
			{
				//System.out.println("hello creeper!");
				tempC = (Creeper) other.allCreepers.get(j);
				 //System.out.println("Check 1 creeper, 1 drifter");
				if(checkProx(tempC, d)&& d.lifespan.getTime()>d.endOfTimeToBeEaten)
				{
					System.out.println("YUM YUM");
					d.size+=5;
					d.changeColor();
					d.babyTime = true;
					other.allCreepers.remove(j);
					
				}
			}
		}	
	}

}