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Copy pathsprite.js
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121 lines (103 loc) · 4.39 KB
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Object.assign(pc, function () {
var SpriteHandler = function (assets, device) {
this._assets = assets;
this._device = device;
};
// The scope of this function is the sprite asset
var onTextureAtlasLoaded = function (atlasAsset) {
var spriteAsset = this;
if (spriteAsset.resource) {
spriteAsset.resource.atlas = atlasAsset.resource;
}
};
// The scope of this function is the sprite asset
var onTextureAtlasAdded = function (atlasAsset) {
var spriteAsset = this;
spriteAsset.registry.load(atlasAsset);
};
Object.assign(SpriteHandler.prototype, {
load: function (url, callback) {
// if given a json file (probably engine-only use case)
if (pc.path.getExtension(url) === '.json') {
pc.http.get(url, function (err, response) {
if (!err) {
callback(null, response);
} else {
callback(err);
}
});
}
},
// Create sprite resource
open: function (url, data) {
var sprite = new pc.Sprite(this._device);
if (url) {
// if url field is present json data is being loaded from file
// store data on sprite object temporarily
sprite.__data = data;
}
return sprite;
},
// Set sprite data
patch: function (asset, assets) {
var sprite = asset.resource;
if (sprite.__data) {
// loading from a json file we have asset data store temporarily on the sprite resource
// copy it into asset.data and delete
asset.data.pixelsPerUnit = sprite.__data.pixelsPerUnit;
asset.data.renderMode = sprite.__data.renderMode;
asset.data.frameKeys = sprite.__data.frameKeys;
if (sprite.__data.textureAtlasAsset) {
var atlas = assets.getByUrl(sprite.__data.textureAtlasAsset);
if (atlas) {
asset.data.textureAtlasAsset = atlas.id;
} else {
console.warn("Could not find textureatlas with url: " + sprite.__data.textureAtlasAsset);
}
}
delete sprite.__data;
}
sprite.startUpdate();
sprite.renderMode = asset.data.renderMode;
sprite.pixelsPerUnit = asset.data.pixelsPerUnit;
sprite.frameKeys = asset.data.frameKeys;
this._updateAtlas(asset);
sprite.endUpdate();
asset.off('change', this._onAssetChange, this);
asset.on('change', this._onAssetChange, this);
},
// Load atlas
_updateAtlas: function (asset) {
var sprite = asset.resource;
if (!asset.data.textureAtlasAsset) {
sprite.atlas = null;
return;
}
this._assets.off('load:' + asset.data.textureAtlasAsset, onTextureAtlasLoaded, asset);
this._assets.on('load:' + asset.data.textureAtlasAsset, onTextureAtlasLoaded, asset);
var atlasAsset = this._assets.get(asset.data.textureAtlasAsset);
if (atlasAsset && atlasAsset.resource) {
sprite.atlas = atlasAsset.resource;
} else {
if (!atlasAsset) {
this._assets.off('add:' + asset.data.textureAtlasAsset, onTextureAtlasAdded, asset);
this._assets.on('add:' + asset.data.textureAtlasAsset, onTextureAtlasAdded, asset);
} else {
this._assets.load(atlasAsset);
}
}
},
_onAssetChange: function (asset, attribute, value, oldValue) {
if (attribute === 'data') {
// if the texture atlas changed, clear events for old atlas asset
if (value && value.textureAtlasAsset && oldValue && value.textureAtlasAsset !== oldValue.textureAtlasAsset) {
this._assets.off('load:' + oldValue.textureAtlasAsset, onTextureAtlasLoaded, asset);
this._assets.off('add:' + oldValue.textureAtlasAsset, onTextureAtlasAdded, asset);
}
}
}
});
return {
SpriteHandler: SpriteHandler
};
}());