Tuesday, December 22, 2009

A very small Chirstmas present from Botworks

Well seeming as I haven't finished any of the projects I am working on yet (more on what they are in the new year) so I can't offer discounts or bonus content. However, I can offer a little something for XNA developers. One of the things that I found most frustrating in XNA was drawing a line, so I created a little function to do just that. It isn't especially clever, but it gets the job done

void drawLine(Texture2D line,int lineWidth,Vector2 startPosition,Vector2 endPosition,SpriteBatch spriteBatch)
float length = Vector2.Distance(startPosition, endPosition);
float theta = (float)Math.Atan((double)((endPosition.X - startPosition.X) / (endPosition.Y - startPosition.Y)));
float alpha = (float)(2*Math.PI) - theta;
spriteBatch.Draw(line, new Rectangle((int)startPosition.X, (int)startPosition.Y, lineWidth, (int)length), null, Color.White, alpha, new Vector2(lineWidth/2,0), SpriteEffects.None, 0);
  • line - this a pre-loaded texture2D which is your basic line pixel. It needs to be 1 pixel high. It can be of any width (for example if you want a glowing line) but a standard line is 1 pixel wide
  • lineWidth - unsurprisingly this is the width of the texture loaded in the line property
  • startPosition, endPosition - these vectors are the start and end co-ordinates of the line
  • spriteBatch - this is just the instance of the spriteBatch which, unless you have specifically changed, is just called spriteBatch

And here is a quick demonstration. I am using a 21x1 image file which is just a red pixel in the middle with fading transparencies going out to create something of a laser effect.

Merry Christmas and a happy and productive new year to you all.

Wednesday, December 9, 2009

Thankyou, BBC

In my last post, I explained why I felt that video games should be covered by mainstream media as a proper medium. I sent a link to the BBC as I believe they could do a program, I even suggested including it in the Radio 4 programme, Front row.

So you can imagine how pleased I was when last nights episode of Front row included an interview with Shigeru Miyamoto. You can listen to it here, it is at the end.

My only complaint is that the presenter called other companies Game manufactures (as opposed to developers or even producers). Other than that, it was really quite good. I am sure it wasn't down to my letter, but hopefully it will lead to further coverage. If they are looking for additional people to interview, they should try Peter Moleyenux (a keen advocate of pushing the boundaries of game design rather than graphics).

Mr. Miyamoto was fantastic as well, quick to defend the accusation that games and films will merge. All in all, I am very happy and hope it continues.

Thanks BBC, you guys are awesome.