mirror of
https://github.com/photonstorm/phaser
synced 2024-12-01 00:49:41 +00:00
84 lines
2.6 KiB
JavaScript
84 lines
2.6 KiB
JavaScript
/**
|
|
* @author Richard Davey <rich@photonstorm.com>
|
|
* @copyright 2016 Photon Storm Ltd.
|
|
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
|
|
*/
|
|
|
|
/**
|
|
* Parse a Sprite Sheet and extracts the frame data from it.
|
|
*
|
|
* @class Phaser.TextureParser.SpriteSheet
|
|
* @static
|
|
* @param {Phaser.Texture} texture - The parent Texture.
|
|
* @param {string} key - The key of the Frame within the Texture that the Sprite Sheet is stored in.
|
|
* @param {number} frameWidth - The fixed width of each frame.
|
|
* @param {number} frameHeight - The fixed height of each frame.
|
|
* @param {number} [startFrame=0] - Skip a number of frames. Useful when there are multiple sprite sheets in one Texture.
|
|
* @param {number} [endFrame=-1] - The total number of frames to extract from the Sprite Sheet. The default value of -1 means "extract all frames".
|
|
* @param {number} [margin=0] - If the frames have been drawn with a margin, specify the amount here.
|
|
* @param {number} [spacing=0] - If the frames have been drawn with spacing between them, specify the amount here.
|
|
* @return {Phaser.FrameData} A FrameData object containing the parsed frames.
|
|
*/
|
|
Phaser.TextureManager.Parsers.SpriteSheet = function (texture, sourceIndex, x, y, width, height, frameWidth, frameHeight, startFrame, endFrame, margin, spacing)
|
|
{
|
|
if (startFrame === undefined) { startFrame = 0; }
|
|
if (endFrame === undefined) { endFrame = -1; }
|
|
if (margin === undefined) { margin = 0; }
|
|
if (spacing === undefined) { spacing = 0; }
|
|
|
|
var row = Math.floor((width - margin) / (frameWidth + spacing));
|
|
var column = Math.floor((height - margin) / (frameHeight + spacing));
|
|
var total = row * column;
|
|
|
|
if (startFrame > total || startFrame < -total)
|
|
{
|
|
startFrame = 0;
|
|
}
|
|
|
|
if (startFrame < 0)
|
|
{
|
|
// Allow negative skipframes.
|
|
startFrame = total + startFrame;
|
|
}
|
|
|
|
if (endFrame !== -1)
|
|
{
|
|
total = startFrame + (endFrame + 1);
|
|
}
|
|
|
|
var fx = margin;
|
|
var fy = margin;
|
|
var ax = 0;
|
|
var ay = 0;
|
|
|
|
for (var i = 0; i < total; i++)
|
|
{
|
|
ax = 0;
|
|
ay = 0;
|
|
|
|
var w = fx + frameWidth;
|
|
var h = fy + frameHeight;
|
|
|
|
if (w > width)
|
|
{
|
|
ax = w - width;
|
|
}
|
|
|
|
if (h > height)
|
|
{
|
|
ay = h - height;
|
|
}
|
|
|
|
texture.add(i, sourceIndex, x + fx, y + fy, frameWidth - ax, frameHeight - ay);
|
|
|
|
fx += frameWidth + spacing;
|
|
|
|
if (fx + frameWidth > width)
|
|
{
|
|
fx = margin;
|
|
fy += frameHeight + spacing;
|
|
}
|
|
}
|
|
|
|
return texture;
|
|
};
|