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Thread: LWJGL problem

  1. 02-21-2015, 06:07 PM #1
    addemup
    addemup is offline
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    Join Date
    Feb 2015
    Posts
    1

    Question LWJGL problem

    Hello, and for the past few couple of days, I've been working on a Minecraft Clone (called "Build") in LWJGL,
    and I've been trying to draw ONE dirt block, but all it will draw only a square!

    Here is the main class:

    Code Java:
    package game;
 
import game.block.DirtBlock;
 
import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
 
public class Boot {
 
	 public void start() {
	        try {
	            Display.setDisplayMode(new DisplayMode(800,600));
	            Display.setTitle("Build");
	            Display.create();
	        } catch (LWJGLException e) {
	            e.printStackTrace();
	            System.exit(0);
	        }
 
	        // init OpenGL here
	        GL11.glMatrixMode(GL11.GL_PROJECTION);
	        GL11.glLoadIdentity();
	        GL11.glOrtho(0, 640, 480, 0, 1, -1);
	        GL11.glMatrixMode(GL11.GL_MODELVIEW);
	        GL11.glEnable(GL11.GL_TEXTURE_2D);
	        GL11.glEnable(GL11.GL_TEXTURE_COMPONENTS);
 
	        DirtBlock dirt = new DirtBlock(0, 0, 0);
 
	        while (!Display.isCloseRequested()) {
 
	            // render OpenGL here
 
	        	dirt.draw();
 
	            Display.update();
	            Display.sync(60);
	        }
 
	        Display.destroy();
	 	}
 
	public static void main(String[] args) {
		Boot boot = new Boot();
		boot.start();
	}
 
}

    And here is the main block class (the one which all Block Types interit from):

    Code Java:
    package game;
 
import static org.lwjgl.opengl.GL11.*;
 
import java.io.IOException;
import java.nio.FloatBuffer;
 
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;
import org.newdawn.slick.util.ResourceLoader;
 
public class Block {
	private static Texture side1;
	private static Texture side2;
	private static Texture side3;
	private static Texture side4;
	private static Texture side5;
	private static Texture side6;
 
	public static Texture getSide1() {
		return side1;
	}
	public static void setSide1(Texture side1) {
		Block.side1 = side1;
	}
	public static Texture getSide2() {
		return side2;
	}
	public static void setSide2(Texture side2) {
		Block.side2 = side2;
	}
	public static Texture getSide3() {
		return side3;
	}
	public static void setSide3(Texture side3) {
		Block.side3 = side3;
	}
	public static Texture getSide4() {
		return side4;
	}
	public static void setSide4(Texture side4) {
		Block.side4 = side4;
	}
	public static Texture getSide5() {
		return side5;
	}
	public static void setSide5(Texture side5) {
		Block.side5 = side5;
	}
	public static Texture getSide6() {
		return side6;
	}
	public static void setSide6(Texture side6) {
		Block.side6 = side6;
	}
	private static float x;
	private static float y;
	private static float z;
	public Block(Texture side1, Texture side2, Texture side3, Texture side4, Texture side5, Texture side6, float x, float y, float z) {
		super();
		this.x = x;
		this.y = y;
		this.z = z;
		this.side1 = side1;
		this.side2 = side2;
		this.side3 = side3;
		this.side4 = side4;
		this.side5 = side5;
		this.side6 = side6;
	}
	public float getX() {
		return x;
	}
	public void setX(float x) {
		this.x = x;
	}
	public float getY() {
		return y;
	}
	public void setY(float y) {
		this.y = y;
	}
	public float getZ() {
		return z;
	}
	public void setZ(float z) {
		this.z = z;
	}
	public void draw() {
		GL11.glBegin(GL_QUADS);
		side1.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(1, 1, -1);
		GL11.glTexCoord2f(1, 0);
		GL11.glVertex3f(World.BLOCK_SIZE, 1, -1); //x = -1
		GL11.glTexCoord2f(1, 1);
		GL11.glVertex3f(World.BLOCK_SIZE, 1, World.BLOCK_SIZE); //x = -1, z = 1
		GL11.glTexCoord2f(0, 1);
		GL11.glVertex3f(1, 1, World.BLOCK_SIZE); //x = 1, z = 1
		GL11.glLoadMatrix((FloatBuffer) side2);
		side2.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(1, -1, 1);
		GL11.glTexCoord2f(1, 0);
		GL11.glVertex3f(World.BLOCK_SIZE, -1, 1);
		GL11.glTexCoord2f(1, 1);
		GL11.glVertex3f(World.BLOCK_SIZE, -1, World.BLOCK_SIZE);
		GL11.glTexCoord2f(0, 1);
		GL11.glVertex3f(1, -1, World.BLOCK_SIZE);
		GL11.glLoadMatrix((FloatBuffer) side3);
		side3.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f( 1, 1, 1);
		GL11.glTexCoord2f(1, 0);
		GL11.glVertex3f(World.BLOCK_SIZE, 1, 1);
		GL11.glTexCoord2f(1, 1);
		GL11.glVertex3f(World.BLOCK_SIZE, World.BLOCK_SIZE, 1);
		GL11.glTexCoord2f(0, 1);
		GL11.glVertex3f(1, World.BLOCK_SIZE, 1);
		GL11.glLoadMatrix((FloatBuffer) side4);
		side4.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(1, -1, -1);
		GL11.glTexCoord2f(1, 0);
		GL11.glVertex3f(World.BLOCK_SIZE, -1, -1);
		GL11.glTexCoord2f(1, 1);
		GL11.glVertex3f(World.BLOCK_SIZE, World.BLOCK_SIZE, -1);
		GL11.glTexCoord2f(0, 1);
		GL11.glVertex3f(1, World.BLOCK_SIZE, -1);
		GL11.glLoadMatrix((FloatBuffer) side5);
		side5.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(-1, 1, 1);
		GL11.glTexCoord2f(1, 0);
		GL11.glVertex3f(-1, 1, World.BLOCK_SIZE);
		GL11.glTexCoord2f(1, 1);
		GL11.glVertex3f(-1, World.BLOCK_SIZE, World.BLOCK_SIZE);
		GL11.glTexCoord2f(0, 1);
		GL11.glVertex3f(-1, World.BLOCK_SIZE, -1);
		GL11.glLoadMatrix((FloatBuffer) side6);
		side6.bind();
		GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(1, 1,-1);
		GL11.glTexCoord2f(1, 0);
	        GL11.glVertex3f(1, 1, World.BLOCK_SIZE);
	        GL11.glTexCoord2f(1, 1);
	        GL11.glVertex3f(1, World.BLOCK_SIZE, World.BLOCK_SIZE);
	        GL11.glTexCoord2f(0, 1);
	        GL11.glVertex3f(1, World.BLOCK_SIZE, -1);
		GL11.glEnd();
	}
}

    and this is the Dirt Block class:

    Code Java:
    package game.block;
 
import static org.lwjgl.opengl.GL11.GL_QUADS;
 
import java.io.IOException;
import java.nio.FloatBuffer;
 
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;
import org.newdawn.slick.util.ResourceLoader;
 
import game.Block;
import game.World;
 
public class DirtBlock extends Block {
 
	private static Texture side1;
	private static Texture side2;
	private static Texture side3;
	private static Texture side4;
	private static Texture side5;
	private static Texture side6;
	private static float x;
	private static float y;
	private static float z;
	public DirtBlock(float x, float y,
			float z) {
		super(side1, side2, side3, side4, side5, side6, x, y, z);
		try {
			this.side1 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		try {
			this.side2 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		try {
			this.side3 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		try {
			this.side4 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		try {
			this.side5 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		try {
			this.side6 = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("res/dirt.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	public static Texture getSide1() {
		return side1;
	}
	public static void setSide1(Texture side1) {
		DirtBlock.side1 = side1;
	}
	public static Texture getSide2() {
		return side2;
	}
	public static void setSide2(Texture side2) {
		DirtBlock.side2 = side2;
	}
	public static Texture getSide3() {
		return side3;
	}
	public static void setSide3(Texture side3) {
		DirtBlock.side3 = side3;
	}
	public static Texture getSide4() {
		return side4;
	}
	public static void setSide4(Texture side4) {
		DirtBlock.side4 = side4;
	}
	public static Texture getSide5() {
		return side5;
	}
	public static void setSide5(Texture side5) {
		DirtBlock.side5 = side5;
	}
	public static Texture getSide6() {
		return side6;
	}
	public static void setSide6(Texture side6) {
		DirtBlock.side6 = side6;
	}
	public float getX() {
		return x;
	}
	public void setX(float x) {
		DirtBlock.x = x;
	}
	public float getY() {
		return y;
	}
	public void setY(float y) {
		DirtBlock.y = y;
	}
	public float getZ() {
		return z;
	}
	public void setZ(float z) {
		DirtBlock.z = z;
	}
	public void draw() {
		GL11.glTranslatef(x, y, z);
		GL11.glBegin(GL11.GL_QUADS);
			side1.bind();
			GL11.glTexCoord2f(0, 0);
			GL11.glVertex3f(1, 1, -1);
			GL11.glTexCoord2f(1, 0);
			GL11.glVertex3f(World.BLOCK_SIZE, 1, -1); //x = -1
			GL11.glTexCoord2f(1, 1);
			GL11.glVertex3f(World.BLOCK_SIZE, 1, World.BLOCK_SIZE); //x = -1, z = 1
			GL11.glTexCoord2f(0, 1);
			GL11.glVertex3f(1, 1, World.BLOCK_SIZE); //x = 1, z = 1
			side1.release();
			side2.bind();
			GL11.glTexCoord2f(0, 0);
			GL11.glVertex3f(1, -1, 1);
			GL11.glTexCoord2f(1, 0);
			GL11.glVertex3f(World.BLOCK_SIZE, -1, 1);
			GL11.glTexCoord2f(1, 1);
			GL11.glVertex3f(World.BLOCK_SIZE, 1, World.BLOCK_SIZE);
			GL11.glTexCoord2f(0, 1);
			GL11.glVertex3f(1, -1, World.BLOCK_SIZE);
			side2.release();
			side3.bind();
			GL11.glTexCoord2f(0, 0);
			GL11.glVertex3f( 1, 1, 1);
			GL11.glTexCoord2f(1, 0);
			GL11.glVertex3f(World.BLOCK_SIZE, 1, 1);
			GL11.glTexCoord2f(1, 1);
			GL11.glVertex3f(World.BLOCK_SIZE, World.BLOCK_SIZE, 1);
			GL11.glTexCoord2f(0, 1);
			GL11.glVertex3f(1, World.BLOCK_SIZE, 1);
			side3.release();
			side4.bind();
			GL11.glTexCoord2d(0, 0);
			GL11.glVertex3f(1, -1, -1);
			GL11.glTexCoord2f(1, 0);
			GL11.glVertex3f(World.BLOCK_SIZE, -1, -1);
			GL11.glTexCoord2f(1, 1);
			GL11.glVertex3f(World.BLOCK_SIZE, World.BLOCK_SIZE, -1);
			GL11.glTexCoord2f(0, 1);
			GL11.glVertex3f(1, World.BLOCK_SIZE, -1);
			side4.release();
			side5.bind();
			GL11.glTexCoord2f(0, 0);
			GL11.glVertex3f(-1, 1, 1);
			GL11.glTexCoord2f(1, 0);
			GL11.glVertex3f(-1, 1, World.BLOCK_SIZE);
			GL11.glTexCoord2f(1, 1);
			GL11.glVertex3f(-1, -1, World.BLOCK_SIZE);
			GL11.glTexCoord2f(0, 1);
			GL11.glVertex3f(-1, World.BLOCK_SIZE, -1);
			side5.release();
			side6.bind();
			GL11.glTexCoord2f(0, 0);
		GL11.glVertex3f(1, 1, -1);
		GL11.glTexCoord2f(1, 0);
	        GL11.glVertex3f(1, 1, World.BLOCK_SIZE);
	        GL11.glTexCoord2f(1, 1);
	        GL11.glVertex3f(1, World.BLOCK_SIZE, World.BLOCK_SIZE);
	        GL11.glTexCoord2f(0, 1);
	        GL11.glVertex3f(1, World.BLOCK_SIZE, -1);
	        side6.release();
		GL11.glEnd();
	}
}

    and that is it for the code, of course that is not all of it.
    I will edit if nessesary.

    Help me please
  2. 02-23-2015, 02:05 PM #2
    carsten neumann
    carsten neumann is offline
    Newbie Frequent Contributor
    Join Date
    Mar 2016
    Posts
    896
    I've been trying to draw ONE dirt block, but all it will draw only a square!
    That's what a cube looks like under orthographic projection when looking straight at a single face.
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