@SubscribeEvent
    public void onTick(TickEvent.PlayerTickEvent event) {
        if (!event.player.getEntityWorld().isRemote) return;
        EntityPlayerSP player = (EntityPlayerSP) event.player;
        Tessellator tessellator = Tessellator.getInstance();
        VertexBuffer renderer = tessellator.getBuffer();
        GlStateManager.disableTexture2D();
        GlStateManager.pushMatrix();
        GlStateManager.pushAttrib();
        renderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_COLOR);
        renderer.pos(0,0,0).color(255, 255, 255, 255).endVertex();
        renderer.pos(0,100,0).color(255, 255, 255, 255).endVertex();
        renderer.pos(100,100,0).color(255, 255, 255, 255).endVertex();
        renderer.pos(100,0,0).color(255, 255, 255, 255).endVertex();
        tessellator.draw();
        GlStateManager.enableTexture2D();
        GlStateManager.popMatrix();
        GlStateManager.popAttrib();
    }