Tile Maps : how do they works ?

[alaslipknot]

Hello,
am currently using lwjgl, but i think my question has nothing to do with it so i didn’t mention that in the title
anyway…
am trying to start with a little platformer game and i think a tiled map is something necessary to do that (even if it’s not, i want to know how it works )
so i was trying to do some codes for the last 2 hours, and i managed to :
- draw the map grid based on the “block” size and type
- print out the x and y coordinate of the mouse based on its position on the grid
what am stacked with :
-draw and KEEP a specific type if “blocks” in the clicked position (it appears in the wrong location)
what i want to know :
-as a start, is this a good way to do it ?

codes here :

This class will handle the map creation

public class World {

	private Block[][] blocks;
	private Block block;
	private int width, height;

	public World(int width, int height) {

		this.width = width;
		this.height = height;

		blocks = new Block[width][height];

	}

	public void setWorld() {
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				Block block = new Block(0, 0, 32, 0);
				block.setX(x * block.getSize());
				block.setY(y * block.getSize());
				block.draw();
				blocks[x][y]=block;

			}
		}
	}
	
	public void drawInWorld(int x,int y){
		Block block = new Block(0, 0, 32, 1);
		block.setX(x * block.getSize());
		block.setY(y * block.getSize());
		block.draw();
	
	}

	public int getWidth() {
		return width;
	}

	public int getHeight() {
		return height;
	}

}

this class will handle a single block creation

public class Block {

	private int x, y, size, type;
	private Drawing draw = new Drawing();
	public Block(int x, int y, int size, int type) {
		super();
		this.x = x;
		this.y = y;
		this.size = size;
		this.type = type;
	}

	public void draw(){
		
		if(type==0){
			draw.coloring("blue");
		}else{
			draw.coloring("red");
		}
		
		draw.drawRect(x, y, size, size);
	}
	
	public int getX() {
		return x;
	}

	public void setX(int x) {
		this.x = x;
	}

	public int getY() {
		return y;
	}

	public void setY(int y) {
		this.y = y;
	}

	public int getSize() {
		return size;
	}

	public void setSize(int size) {
		this.size = size;
	}

	public int getType() {
		return type;
	}

	public void setType(int type) {
		this.type = type;
	}

}

this is the Board class (logic,calling etc…)
PS :
i removed the player method to make it easiest to follow

 

import java.util.Arrays;

import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;

public class Board {
	// varibable of other classes
	
	private Loop loop = new Loop(); // the loop class
	private World world;

	int delta;

	public void init() {
		// initialize the loop
		loop.init();
		world = new World(25,19);
		
	}

	// the main game logic "caller"
	public void myBoardLoop() {
		delta = loop.getDelta();
		
		update(delta);
	}

	// the update method
	private void update(int delta) {
		input();
		painting();
		
		loop.updateFPS();

	}

	private void painting() {
		// clear the screen and depth buffer
		GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
		
		
		world.setWorld();
	}


	private void input(){
		int mouseX = Mouse.getX();
		int mouseY = Mouse.getY();
		boolean mouseClick = Mouse.isButtonDown(0);
		if(mouseClick){
			int mapX = Math.round(mouseX/32);
			int mapY = Math.round(mouseY/32);
			System.out.println(mapX+"||"+mapY);
			world.drawInWorld(mapX, mapY);
		}
	}
}

thank you