run game

package Core;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
import java.util.HashSet;
import java.util.Set;

import Base.Game;
import Base.Input;
import Base.Timer;
import Base.custom.IntArr;
import Base.custom.PairMap;


public class RunGame {

    Camera cam = new Camera();

    World world;
    public RunGame(){
        world = new World();

    }

    Timer t = new Timer(500);
    int x = 0;
    int y = 0;
    boolean keydown = false;
    public void update(){
        cam.update();

            if(!keydown && Input.getInput().isKeyDown(KeyEvent.VK_G)){
                keydown = true;
                x+=1;
                y = 0;
                Set<IntArr> pos = new HashSet<>();
                for(int o = 0; o < 3; o++){
                    for(int i =0; i < 3; i++){
                        pos.add(new IntArr(x+i,y+o));
                    }
                }

                world.append(pos);
            }
            if(keydown && !Input.getInput().isKeyDown(KeyEvent.VK_G)){
                keydown = false;
            }
    }

    public void render(Graphics2D g){
        g.setColor(Color.BLUE);
        int scale = 4;
        Rectangle gamescreen = new Rectangle(0,0,Game.size.width*scale,Game.size.height*scale);
            for(Rectangle room: world.roomObjects.getKeys()){
                if(gamescreen.intersects((room.x*scale)+cam.xOff,(room.y*scale)+cam.yOff,room.width*scale,room.height*scale)){
                    int[][] roomObjs = world.roomObjects.get(room);
                    for(int o = 0; o < roomObjs.length; o++){
                        for(int i = 0; i < roomObjs[o].length; i++){
                            int nX = room.x+(i*world.div);
                            int nY = room.y+(o*world.div);
                            int nW = world.div;
                            int nH = world.div;
                            if(gamescreen.intersects(nX*scale+cam.xOff,nY*scale+cam.yOff,nW*scale,nH*scale)){
                                g.setColor(Color.darkGray.darker());
                                g.fillRect(nX*scale+cam.xOff,nY*scale+cam.yOff,nW*scale,nH*scale);
                                switch(roomObjs[o][i]){
                                case 1:
                                    g.setColor(Color.red.darker());
                                    break;
                                case 2:
                                    g.setColor(Color.green);
                                    break;
                                default:
                                    g.setColor(Color.BLUE);
                                    break;
                                }
                                g.fillRect(nX*scale+cam.xOff+2,nY*scale+cam.yOff+2,nW*scale-4,nH*scale-4);
                            }
                        }
                    }

            }

        }
    }

}