package nl.sonware.opengltest;

import static org.lwjgl.opengl.ARBBufferObject.*;
import static org.lwjgl.opengl.ARBVertexBufferObject.*;
import static org.lwjgl.opengl.GL11.*;

public class Block {
    int vertexBuffer, texCoordBuffer;
    float[] vertexArray, texCoordArray;
    float xSize,ySize,zSize;
    Block(float xSize, float ySize, float zSize) {
        this.xSize = xSize;
        this.ySize = ySize;
        this.zSize = zSize;

        vertexArray = new float[] {
                -1, 1, -1,
                -1,-1, -1,
                1, -1, -1,

                1, -1,  -1,
                1,  1,  -1,
                -1, 1,  -1,
        };

        texCoordArray = new float[] {
                0,1,
                0,0,
                1,0,

                1,0,
                1,1,
                0,1,
        };

        vertexBuffer = glGenBuffersARB();
        texCoordBuffer = glGenBuffersARB();

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, vertexBuffer);
        glBufferDataARB(GL_ARRAY_BUFFER_ARB, BufferUtils.wrapDirect(vertexArray), GL_STATIC_DRAW_ARB);

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, texCoordBuffer);
        glBufferDataARB(GL_ARRAY_BUFFER_ARB, BufferUtils.wrapDirect(texCoordArray), GL_STATIC_DRAW_ARB);

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
    }

    public void render() {
        Textures.bindTexture(Textures.textureWood);

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, vertexBuffer);
        glTexCoordPointer(3, GL_FLOAT, 0, 0);

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, texCoordBuffer);
        glTexCoordPointer(2, GL_FLOAT, 0, 0);

        glEnableClientState(GL_VERTEX_ARRAY);
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);

            glDrawArrays(GL_TRIANGLES, 0, vertexArray.length); // Draw the VBO

        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
        glDisableClientState(GL_VERTEX_ARRAY);

        glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); // end VBO mode
    }
}