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Merge pull request #18765 from eska014/enginejs-extalt

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Facilitate using non-default filename extensions in HTML5 platform
This commit is contained in:
Rémi Verschelde
2018-05-10 21:57:07 +02:00
committed by GitHub
parent 2766050c53 96f907c023
commit a415efa4b7
2 changed files with 17 additions and 4 deletions
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17
platform/javascript/engine.js
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@@ -10,6 +10,7 @@
var DOWNLOAD_ATTEMPTS_MAX = 4;
var basePath = null;
var wasmFilenameExtensionOverride = null;
var engineLoadPromise = null;
var loadingFiles = {};
@@ -129,13 +130,17 @@
this.startGame = function(mainPack) {
executableName = getBaseName(mainPack);
var mainArgs = [];
if (!getPathLeaf(mainPack).endsWith('.pck')) {
mainArgs = ['--main-pack', getPathLeaf(mainPack)];
}
return Promise.all([
// Load from directory,
this.init(getBasePath(mainPack)),
// ...but write to root where the engine expects it.
this.preloadFile(mainPack, getPathLeaf(mainPack))
]).then(
Function.prototype.apply.bind(synchronousStart, this, [])
Function.prototype.apply.bind(synchronousStart, this, mainArgs)
);
};
@@ -303,6 +308,14 @@
return !!testContext;
};
Engine.setWebAssemblyFilenameExtension = function(override) {
if (String(override).length === 0) {
throw new Error('Invalid WebAssembly filename extension override');
}
wasmFilenameExtensionOverride = String(override);
}
Engine.load = function(newBasePath) {
if (newBasePath !== undefined) basePath = getBasePath(newBasePath);
@@ -310,7 +323,7 @@
if (typeof WebAssembly !== 'object')
return Promise.reject(new Error("Browser doesn't support WebAssembly"));
// TODO cache/retrieve module to/from idb
engineLoadPromise = loadPromise(basePath + '.wasm').then(function(xhr) {
engineLoadPromise = loadPromise(basePath + '.' + (wasmFilenameExtensionOverride || 'wasm')).then(function(xhr) {
return xhr.response;
});
engineLoadPromise = engineLoadPromise.catch(function(err) {