org.craftmania.blocks.CrossedBlockBrush.java Source code

Introduction

Here is the source code for org.craftmania.blocks.CrossedBlockBrush.java

Source

/*******************************************************************************
 * Copyright 2012 Martijn Courteaux <martijn.courteaux@skynet.be>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.craftmania.blocks;

import static org.craftmania.rendering.ChunkMeshBuilder.*;

import java.nio.FloatBuffer;

import org.craftmania.game.TextureStorage;
import org.craftmania.math.Vec2f;
import org.craftmania.math.Vec3f;
import org.craftmania.world.LightBuffer;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;

public class CrossedBlockBrush extends BlockBrush {
    private Vec2f _texturePosition;
    private Vec2f _textureSize;
    private Vec3f _position;
    private int _callList;
    private Texture _terrain;

    public CrossedBlockBrush() {
        _texturePosition = new Vec2f();
        _textureSize = new Vec2f();
        _position = new Vec3f();
        _terrain = TextureStorage.getTexture("terrain");
    }

    @Override
    public void setPosition(float x, float y, float z) {
        _position.set(x, y, z);
    }

    public void setTexturePosition(int x, int y) {
        _texturePosition.set(x * 16f / _terrain.getImageWidth(), y * 16f / _terrain.getImageHeight());
        _textureSize.set(1.0f / 16.0f, 1.0f / 16.0f);
    }

    @Override
    public void render(LightBuffer lightBuffer) {
        if (_callList != 0) {
            _terrain.bind();

            float light = lightBuffer.get(1, 1, 1) / 30.001f;

            /* Texture 11,10 -> 11,15 */
            GL11.glDisable(GL11.GL_CULL_FACE);
            GL11.glEnable(GL11.GL_BLEND);
            // GL11.glDepthFunc(GL11.GL_ALWAYS);
            GL11.glPushMatrix();
            GL11.glTranslatef(_position.x() + 0.5f, _position.y() + 0.5f, _position.z() + 0.5f);
            GL11.glColor3f(light, light, light);

            GL11.glCallList(_callList);

            GL11.glPopMatrix();
            GL11.glEnable(GL11.GL_CULL_FACE);
            GL11.glDisable(GL11.GL_BLEND);
        }
    }

    @Override
    public void create() {
        _callList = GL11.glGenLists(1);

        GL11.glNewList(_callList, GL11.GL_COMPILE);
        GL11.glBegin(GL11.GL_QUADS);

        GL11.glTexCoord2f(_texturePosition.x(), _texturePosition.y());
        GL11.glVertex3f(-0.5f, 0.5f, -0.5f);
        GL11.glTexCoord2f(_texturePosition.x() + _textureSize.x(), _texturePosition.y());
        GL11.glVertex3f(0.5f, 0.5f, 0.5f);
        GL11.glTexCoord2f(_texturePosition.x() + _textureSize.x(), _texturePosition.y() + _textureSize.y());
        GL11.glVertex3f(0.5f, -0.5f, 0.5f);
        GL11.glTexCoord2f(_texturePosition.x(), _texturePosition.y() + _textureSize.y());
        GL11.glVertex3f(-0.5f, -0.5f, -0.5f);

        GL11.glTexCoord2f(_texturePosition.x(), _texturePosition.y());
        GL11.glVertex3f(0.5f, 0.5f, -0.5f);
        GL11.glTexCoord2f(_texturePosition.x() + _textureSize.x(), _texturePosition.y());
        GL11.glVertex3f(-0.5f, 0.5f, 0.5f);
        GL11.glTexCoord2f(_texturePosition.x() + _textureSize.x(), _texturePosition.y() + _textureSize.y());
        GL11.glVertex3f(-0.5f, -0.5f, 0.5f);
        GL11.glTexCoord2f(_texturePosition.x(), _texturePosition.y() + _textureSize.y());
        GL11.glVertex3f(0.5f, -0.5f, -0.5f);
        GL11.glEnd();
        GL11.glEndList();
    }

    @Override
    public void release() {
        GL11.glDeleteLists(_callList, 1);
    }

    @Override
    public int getVertexCount() {
        return 8;
    }

    @Override
    public void storeInVBO(FloatBuffer vbo, float x, float y, float z, LightBuffer lightBuffer) {
        byte light = lightBuffer.get(1, 1, 1);

        /* Blade 0 */
        put3f(vbo, x - 0.5f, y + 0.5f, z - 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x(), _texturePosition.y());

        put3f(vbo, x + 0.5f, y + 0.5f, z + 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x() + _textureSize.x(), _texturePosition.y());

        put3f(vbo, x + 0.5f, y - 0.5f, z + 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x() + _textureSize.x(), _texturePosition.y() + _textureSize.y());

        put3f(vbo, x - 0.5f, y - 0.5f, z - 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x(), _texturePosition.y() + _textureSize.y());

        /* Blade 1 */
        put3f(vbo, x + 0.5f, y + 0.5f, z - 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x(), _texturePosition.y());

        put3f(vbo, x - 0.5f, y + 0.5f, z + 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x() + _textureSize.x(), _texturePosition.y());

        put3f(vbo, x - 0.5f, y - 0.5f, z + 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x() + _textureSize.x(), _texturePosition.y() + _textureSize.y());

        put3f(vbo, x + 0.5f, y - 0.5f, z - 0.5f);
        putColorWithLight(vbo, COLOR_WHITE, light);
        put2f(vbo, _texturePosition.x(), _texturePosition.y() + _textureSize.y());

    }

    public Vec2f getTexturePosition() {
        return _texturePosition;
    }

}