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[HTML5] Port JavaScript inline code to libraries.

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The API is implemented in javascript, and generates C functions that can
be called from godot.
This allows much cleaner code replacing all `EM_ASM` calls in our C++
code with plain C function calls.
This also gets rid of few hacks and comes with few optimizations (e.g.
custom cursor shapes should be much faster now).
This commit is contained in:
Fabio Alessandrelli 2020-10-17 23:31:30 +02:00
parent a7ecb3c048
commit e52ed6d89e
31 changed files with 2016 additions and 1502 deletions
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36
platform/javascript/engine/engine.js
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@ -33,7 +33,7 @@ Function('return this')()['Engine'] = (function() {
this.resizeCanvasOnStart = false;
this.onExecute = null;
this.onExit = null;
this.persistentPaths = [];
this.persistentPaths = ['/userfs'];
};
Engine.prototype.init = /** @param {string=} basePath */ function(basePath) {
@ -114,18 +114,30 @@ Function('return this')()['Engine'] = (function() {
locale = navigator.languages ? navigator.languages[0] : navigator.language;
locale = locale.split('.')[0];
}
me.rtenv['locale'] = locale;
me.rtenv['canvas'] = me.canvas;
// Emscripten configuration.
me.rtenv['thisProgram'] = me.executableName;
me.rtenv['resizeCanvasOnStart'] = me.resizeCanvasOnStart;
me.rtenv['noExitRuntime'] = true;
me.rtenv['onExecute'] = me.onExecute;
me.rtenv['onExit'] = function(code) {
me.rtenv['deinitFS']();
if (me.onExit)
me.onExit(code);
me.rtenv = null;
}
// Godot configuration.
me.rtenv['initConfig']({
'resizeCanvasOnStart': me.resizeCanvasOnStart,
'canvas': me.canvas,
'locale': locale,
'onExecute': function(p_args) {
if (me.onExecute) {
me.onExecute(p_args);
return 0;
}
return 1;
},
'onExit': function(p_code) {
me.rtenv['deinitFS']();
if (me.onExit) {
me.onExit(p_code);
}
me.rtenv = null;
},
});
return new Promise(function(resolve, reject) {
preloader.preloadedFiles.forEach(function(file) {
me.rtenv['copyToFS'](file.path, file.buffer);
@ -208,8 +220,6 @@ Function('return this')()['Engine'] = (function() {
};
Engine.prototype.setOnExecute = function(onExecute) {
if (this.rtenv)
this.rtenv.onExecute = onExecute;
this.onExecute = onExecute;
}