适用于HTML5帆布游戏的Tileset

Question

I'm trying to make a game in HTML5 canvas, but instead of uploading a ton of images I want to just upload one image that has all of the tiles on it. The problem is, I don't know how to make only one part of the image show up. Basically I want to do what Google does with this image: http://www.google.com/images/srpr/nav_logo27.png except with fixed height/width tiles. Can someone explain to me how to do this? Also, if it's different in canvas than in a regular html page without canvas, how would I do it in canvas?

Answer 1

You can use the slicing parameters of drawImage

drawImage(image, sx, sy, sWidth, sHeight, dx, dy, dWidth, dHeight)

• sx , sy : left and top offset of the part to be sliced
• sWidth , sHeight : dimensions of the part to be sliced
• dx , dy : left and top offset for the image on the canvas to be rendered at
• dWidth , dHeight : image dimensions on the canvas

More info at: Using images - Slicing (MDC)

Answer 2

看看SpriteJS https://github.com/batiste/sprite.js/blob/master/sprite.js那里的工作是基于从单张图片中绘制精灵的时刻的偏移量。

Answer 3

这是我使用GWT的方式： http ： //code.google.com/p/gwt-examples/wiki/gwt_hmtl5