spine-runtimes/spine-ts/core/src/SharedAssetManager.ts
2020-09-15 15:56:23 -07:00

222 lines
7.5 KiB
TypeScript

/******************************************************************************
* Spine Runtimes License Agreement
* Last updated January 1, 2020. Replaces all prior versions.
*
* Copyright (c) 2013-2020, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
module spine {
class Assets {
clientId: string;
toLoad = new Array<string>();
assets: Map<any> = {};
textureLoader: (image: HTMLImageElement | ImageBitmap) => any;
constructor(clientId: string) {
this.clientId = clientId;
}
loaded() {
let i = 0;
for (let v in this.assets) i++;
return i;
}
}
export class SharedAssetManager implements Disposable {
private pathPrefix: string;
private clientAssets: Map<Assets> = {};
private queuedAssets: Map<string> = {};
private rawAssets: Map<any> = {}
private errors: Map<string> = {};
constructor (pathPrefix: string = "") {
this.pathPrefix = pathPrefix;
}
private queueAsset(clientId: string, textureLoader: (image: HTMLImageElement | ImageBitmap) => any, path: string): boolean {
let clientAssets = this.clientAssets[clientId];
if (clientAssets === null || clientAssets === undefined) {
clientAssets = new Assets(clientId);
this.clientAssets[clientId] = clientAssets;
}
if (textureLoader !== null) clientAssets.textureLoader = textureLoader;
clientAssets.toLoad.push(path);
// check if already queued, in which case we can skip actual
// loading
if (this.queuedAssets[path] === path) {
return false;
} else {
this.queuedAssets[path] = path;
return true;
}
}
loadText(clientId: string, path: string) {
path = this.pathPrefix + path;
if (!this.queueAsset(clientId, null, path)) return;
let request = new XMLHttpRequest();
request.overrideMimeType("text/html");
request.onreadystatechange = () => {
if (request.readyState == XMLHttpRequest.DONE) {
if (request.status >= 200 && request.status < 300) {
this.rawAssets[path] = request.responseText;
} else {
this.errors[path] = `Couldn't load text ${path}: status ${request.status}, ${request.responseText}`;
}
}
};
request.open("GET", path, true);
request.send();
}
loadJson(clientId: string, path: string) {
path = this.pathPrefix + path;
if (!this.queueAsset(clientId, null, path)) return;
let request = new XMLHttpRequest();
request.overrideMimeType("text/html");
request.onreadystatechange = () => {
if (request.readyState == XMLHttpRequest.DONE) {
if (request.status >= 200 && request.status < 300) {
this.rawAssets[path] = JSON.parse(request.responseText);
} else {
this.errors[path] = `Couldn't load text ${path}: status ${request.status}, ${request.responseText}`;
}
}
};
request.open("GET", path, true);
request.send();
}
loadTexture (clientId: string, textureLoader: (image: HTMLImageElement | ImageBitmap) => any, path: string) {
path = this.pathPrefix + path;
if (!this.queueAsset(clientId, textureLoader, path)) return;
let isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document);
let isWebWorker = !isBrowser && typeof importScripts !== 'undefined';
if (isWebWorker) {
// For webworker use fetch instead of Image()
const options = {mode: <RequestMode>"cors"};
fetch(path, options).then( (response) => {
if (!response.ok) {
this.errors[path] = "Couldn't load image " + path;
}
return response.blob();
}).then( (blob) => {
return createImageBitmap(blob, {
premultiplyAlpha: 'none',
colorSpaceConversion: 'none',
});
}).then( (bitmap) => {
this.rawAssets[path] = bitmap;
});
} else {
let img = new Image();
img.crossOrigin = "anonymous";
img.onload = (ev) => {
this.rawAssets[path] = img;
}
img.onerror = (ev) => {
this.errors[path] = `Couldn't load image ${path}`;
}
img.src = path;
}
}
get (clientId: string, path: string) {
path = this.pathPrefix + path;
let clientAssets = this.clientAssets[clientId];
if (clientAssets === null || clientAssets === undefined) return true;
return clientAssets.assets[path];
}
private updateClientAssets(clientAssets: Assets): void {
let isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document);
let isWebWorker = !isBrowser && typeof importScripts !== 'undefined';
for (let i = 0; i < clientAssets.toLoad.length; i++) {
let path = clientAssets.toLoad[i];
let asset = clientAssets.assets[path];
if (asset === null || asset === undefined) {
let rawAsset = this.rawAssets[path];
if (rawAsset === null || rawAsset === undefined) continue;
if (isWebWorker)
{
if (rawAsset instanceof ImageBitmap) {
clientAssets.assets[path] = clientAssets.textureLoader(<ImageBitmap>rawAsset);
} else {
clientAssets.assets[path] = rawAsset;
}
} else {
if (rawAsset instanceof HTMLImageElement) {
clientAssets.assets[path] = clientAssets.textureLoader(<HTMLImageElement>rawAsset);
} else {
clientAssets.assets[path] = rawAsset;
}
}
}
}
}
isLoadingComplete (clientId: string): boolean {
let clientAssets = this.clientAssets[clientId];
if (clientAssets === null || clientAssets === undefined) return true;
this.updateClientAssets(clientAssets);
return clientAssets.toLoad.length == clientAssets.loaded();
}
/*remove (clientId: string, path: string) {
path = this.pathPrefix + path;
let asset = this.assets[path];
if ((<any>asset).dispose) (<any>asset).dispose();
this.assets[path] = null;
}
removeAll () {
for (let key in this.assets) {
let asset = this.assets[key];
if ((<any>asset).dispose) (<any>asset).dispose();
}
this.assets = {};
}*/
dispose () {
// this.removeAll();
}
hasErrors() {
return Object.keys(this.errors).length > 0;
}
getErrors() {
return this.errors;
}
}
}