package com.jouls.game.graphics;

import java.util.Random;


public class Screen {

    private int height, width;
    private final int MAP_HEIGHT = 64;
    private final int MAP_WIDTH = 64;
    private final int MAP_SIZE = MAP_WIDTH * MAP_HEIGHT;
    public int[] pixels;
    public int[] tiles = new int[MAP_SIZE];
    private Random random = new Random();

    public Screen(int width, int height){
        this.width = width;
        this.height  = height;
        this.pixels = new int[width * height];

        for(int i =0; i < MAP_SIZE; i++){
            this.tiles[i] = random.nextInt(0xffffff);
        }
    }
    public void clear(){
        for(int i = 0; i < pixels.length; i++){
            pixels[i] = 0;
        }
    }
    public void render(int xOffset, int yOffset){
        for(int y = 0; y < height ; y++){
            int yy = y + yOffset;
            if(y < 0 || y >= height)break;
            for(int x = 0; x < width ; x++){
                int xx = x + xOffset;
                if(x < 0 || x>=width) break;
                //int tileIndex = ((xx >> 4) & MAP_WIDTH -1 ) + ((yy >> 4 )& MAP_HEIGHT -1) * MAP_WIDTH;
                pixels[x + y * width] = Sprite.grass.pixels[((x & 15) + (y & 15)) * Sprite.grass.size];
            }
        }
    }

}