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[HTML5] Refactor JS, threads support, closures.

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- Refactored the Engine code, splitted across files.
- Use MODULARIZE option to build emscripten code into it's own closure.
- Optional closure compiler run for JS and generated code.
- Enable lto support (saves ~2MiB in release).
- Can now build with tools=yes (not much to see yet).
- Dropped some deprecated code for older toolchains.
- Add onExit, and onExecute JS function.
- Add files drag and drop support.
- Add support for low precessor usage mode (via offscreen render, swap).
This commit is contained in:
Fabio Alessandrelli 2020-01-19 11:44:19 +01:00
parent 93e20a4cd4
commit 21c9f37757
18 changed files with 1097 additions and 627 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
platform/javascript/SCsub
View File

@ -10,32 +10,56 @@ javascript_files = [
"os_javascript.cpp",
]
build = env.add_program(["#bin/godot${PROGSUFFIX}.js", "#bin/godot${PROGSUFFIX}.wasm"], javascript_files)
js, wasm = build
build_targets = ["#bin/godot${PROGSUFFIX}.js", "#bin/godot${PROGSUFFIX}.wasm"]
if env["threads_enabled"]:
build_targets.append("#bin/godot${PROGSUFFIX}.worker.js")
build = env.add_program(build_targets, javascript_files)
js_libraries = [
"http_request.js",
"native/http_request.js",
]
for lib in js_libraries:
env.Append(LINKFLAGS=["--js-library", env.File(lib).path])
env.Depends(build, js_libraries)
js_modules = [
"id_handler.js",
js_pre = [
"native/id_handler.js",
"native/utils.js",
]
for module in js_modules:
env.Append(LINKFLAGS=["--pre-js", env.File(module).path])
env.Depends(build, js_modules)
for js in js_pre:
env.Append(LINKFLAGS=["--pre-js", env.File(js).path])
env.Depends(build, js_pre)
wrapper_start = env.File("pre.js")
wrapper_end = env.File("engine.js")
js_wrapped = env.Textfile("#bin/godot", [wrapper_start, js, wrapper_end], TEXTFILESUFFIX="${PROGSUFFIX}.wrapped.js")
engine = [
"engine/preloader.js",
"engine/utils.js",
"engine/engine.js",
]
externs = [env.File("#platform/javascript/engine/externs.js")]
js_engine = env.CreateEngineFile("#bin/godot${PROGSUFFIX}.engine.js", engine, externs)
env.Depends(js_engine, externs)
wrap_list = [
build[0],
js_engine,
]
js_wrapped = env.Textfile("#bin/godot", [env.File(f) for f in wrap_list], TEXTFILESUFFIX="${PROGSUFFIX}.wrapped.js")
zip_dir = env.Dir("#bin/.javascript_zip")
zip_files = env.InstallAs(
[zip_dir.File("godot.js"), zip_dir.File("godot.wasm"), zip_dir.File("godot.html")],
[js_wrapped, wasm, "#misc/dist/html/full-size.html"],
)
binary_name = "godot.tools" if env["tools"] else "godot"
out_files = [
zip_dir.File(binary_name + ".js"),
zip_dir.File(binary_name + ".wasm"),
zip_dir.File(binary_name + ".html"),
]
html_file = "#misc/dist/html/full-size.html"
in_files = [js_wrapped, build[1], html_file]
if env["threads_enabled"]:
in_files.append(build[2])
out_files.append(zip_dir.File(binary_name + ".worker.js"))
zip_files = env.InstallAs(out_files, in_files)
env.Zip(
"#bin/godot",
zip_files,

142
platform/javascript/audio_driver_javascript.cpp
View File

@ -37,22 +37,18 @@
AudioDriverJavaScript *AudioDriverJavaScript::singleton = NULL;
const char *AudioDriverJavaScript::get_name() const {
return "JavaScript";
}
extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_js_mix() {
AudioDriverJavaScript::singleton->mix_to_js();
}
extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_process_capture(float sample) {
AudioDriverJavaScript::singleton->process_capture(sample);
}
void AudioDriverJavaScript::mix_to_js() {
int channel_count = get_total_channels_by_speaker_mode(get_speaker_mode());
int sample_count = memarr_len(internal_buffer) / channel_count;
int32_t *stream_buffer = reinterpret_cast<int32_t *>(internal_buffer);
@ -63,24 +59,24 @@ void AudioDriverJavaScript::mix_to_js() {
}
void AudioDriverJavaScript::process_capture(float sample) {
int32_t sample32 = int32_t(sample * 32768.f) * (1U << 16);
input_buffer_write(sample32);
}
Error AudioDriverJavaScript::init() {
int mix_rate = GLOBAL_GET("audio/mix_rate");
int latency = GLOBAL_GET("audio/output_latency");
/* clang-format off */
EM_ASM({
_driver_id = EM_ASM_INT({
const MIX_RATE = $0;
const LATENCY = $1 / 1000;
_audioDriver_audioContext = new (window.AudioContext || window.webkitAudioContext)({ sampleRate: MIX_RATE, latencyHint: LATENCY});
_audioDriver_audioInput = null;
_audioDriver_inputStream = null;
_audioDriver_scriptNode = null;
return Module.IDHandler.add({
'context': new (window.AudioContext || window.webkitAudioContext)({ sampleRate: MIX_RATE, latencyHint: LATENCY}),
'input': null,
'stream': null,
'script': null
});
}, mix_rate, latency);
/* clang-format on */
@ -88,14 +84,16 @@ Error AudioDriverJavaScript::init() {
buffer_length = closest_power_of_2((latency * mix_rate / 1000) * channel_count);
/* clang-format off */
buffer_length = EM_ASM_INT({
const BUFFER_LENGTH = $0;
const CHANNEL_COUNT = $1;
var ref = Module.IDHandler.get($0);
const ctx = ref['context'];
const BUFFER_LENGTH = $1;
const CHANNEL_COUNT = $2;
_audioDriver_scriptNode = _audioDriver_audioContext.createScriptProcessor(BUFFER_LENGTH, 2, CHANNEL_COUNT);
_audioDriver_scriptNode.connect(_audioDriver_audioContext.destination);
return _audioDriver_scriptNode.bufferSize;
}, buffer_length, channel_count);
var script = ctx.createScriptProcessor(BUFFER_LENGTH, 2, CHANNEL_COUNT);
script.connect(ctx.destination);
ref['script'] = script;
return script.bufferSize;
}, _driver_id, buffer_length, channel_count);
/* clang-format on */
if (!buffer_length) {
return FAILED;
@ -111,14 +109,14 @@ Error AudioDriverJavaScript::init() {
}
void AudioDriverJavaScript::start() {
/* clang-format off */
EM_ASM({
var INTERNAL_BUFFER_PTR = $0;
const ref = Module.IDHandler.get($0);
var INTERNAL_BUFFER_PTR = $1;
var audioDriverMixFunction = cwrap('audio_driver_js_mix');
var audioDriverProcessCapture = cwrap('audio_driver_process_capture', null, ['number']);
_audioDriver_scriptNode.onaudioprocess = function(audioProcessingEvent) {
ref['script'].onaudioprocess = function(audioProcessingEvent) {
audioDriverMixFunction();
var input = audioProcessingEvent.inputBuffer;
@ -135,7 +133,7 @@ void AudioDriverJavaScript::start() {
}
}
if (_audioDriver_audioInput) {
if (ref['input']) {
var inputDataL = input.getChannelData(0);
var inputDataR = input.getChannelData(1);
for (var i = 0; i < inputDataL.length; i++) {
@ -144,51 +142,54 @@ void AudioDriverJavaScript::start() {
}
}
};
}, internal_buffer);
}, _driver_id, internal_buffer);
/* clang-format on */
}
void AudioDriverJavaScript::resume() {
/* clang-format off */
EM_ASM({
if (_audioDriver_audioContext.resume)
_audioDriver_audioContext.resume();
});
const ref = Module.IDHandler.get($0);
if (ref && ref['context'] && ref['context'].resume)
ref['context'].resume();
}, _driver_id);
/* clang-format on */
}
float AudioDriverJavaScript::get_latency() {
/* clang-format off */
return EM_ASM_DOUBLE({
const ref = Module.IDHandler.get($0);
var latency = 0;
if (_audioDriver_audioContext) {
if (_audioDriver_audioContext.baseLatency) {
latency += _audioDriver_audioContext.baseLatency;
if (ref && ref['context']) {
const ctx = ref['context'];
if (ctx.baseLatency) {
latency += ctx.baseLatency;
}
if (_audioDriver_audioContext.outputLatency) {
latency += _audioDriver_audioContext.outputLatency;
if (ctx.outputLatency) {
latency += ctx.outputLatency;
}
}
return latency;
});
}, _driver_id);
/* clang-format on */
}
int AudioDriverJavaScript::get_mix_rate() const {
/* clang-format off */
return EM_ASM_INT_V({
return _audioDriver_audioContext.sampleRate;
});
return EM_ASM_INT({
const ref = Module.IDHandler.get($0);
return ref && ref['context'] ? ref['context'].sampleRate : 0;
}, _driver_id);
/* clang-format on */
}
AudioDriver::SpeakerMode AudioDriverJavaScript::get_speaker_mode() const {
/* clang-format off */
return get_speaker_mode_by_total_channels(EM_ASM_INT_V({
return _audioDriver_audioContext.destination.channelCount;
}));
return get_speaker_mode_by_total_channels(EM_ASM_INT({
const ref = Module.IDHandler.get($0);
return ref && ref['context'] ? ref['context'].destination.channelCount : 0;
}, _driver_id));
/* clang-format on */
}
@ -199,16 +200,38 @@ void AudioDriverJavaScript::lock() {
void AudioDriverJavaScript::unlock() {
}
void AudioDriverJavaScript::finish() {
void AudioDriverJavaScript::finish_async() {
// Close the context, add the operation to the async_finish list in module.
int id = _driver_id;
_driver_id = 0;
/* clang-format off */
EM_ASM({
_audioDriver_audioContext = null;
_audioDriver_audioInput = null;
_audioDriver_scriptNode = null;
});
var ref = Module.IDHandler.get($0);
Module.async_finish.push(new Promise(function(accept, reject) {
if (!ref) {
console.log("Ref not found!", $0, Module.IDHandler);
setTimeout(accept, 0);
} else {
const context = ref['context'];
// Disconnect script and input.
ref['script'].disconnect();
if (ref['input'])
ref['input'].disconnect();
ref = null;
context.close().then(function() {
accept();
}).catch(function(e) {
accept();
});
}
}));
Module.IDHandler.remove($0);
}, id);
/* clang-format on */
}
void AudioDriverJavaScript::finish() {
if (internal_buffer) {
memdelete_arr(internal_buffer);
internal_buffer = NULL;
@ -216,15 +239,15 @@ void AudioDriverJavaScript::finish() {
}
Error AudioDriverJavaScript::capture_start() {
input_buffer_init(buffer_length);
/* clang-format off */
EM_ASM({
function gotMediaInput(stream) {
_audioDriver_inputStream = stream;
_audioDriver_audioInput = _audioDriver_audioContext.createMediaStreamSource(stream);
_audioDriver_audioInput.connect(_audioDriver_scriptNode);
var ref = Module.IDHandler.get($0);
ref['stream'] = stream;
ref['input'] = ref['context'].createMediaStreamSource(stream);
ref['input'].connect(ref['script']);
}
function gotMediaInputError(e) {
@ -238,30 +261,30 @@ Error AudioDriverJavaScript::capture_start() {
navigator.getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
navigator.getUserMedia({"audio": true}, gotMediaInput, gotMediaInputError);
}
});
}, _driver_id);
/* clang-format on */
return OK;
}
Error AudioDriverJavaScript::capture_stop() {
/* clang-format off */
EM_ASM({
if (_audioDriver_inputStream) {
const tracks = _audioDriver_inputStream.getTracks();
var ref = Module.IDHandler.get($0);
if (ref['stream']) {
const tracks = ref['stream'].getTracks();
for (var i = 0; i < tracks.length; i++) {
tracks[i].stop();
}
_audioDriver_inputStream = null;
ref['stream'] = null;
}
if (_audioDriver_audioInput) {
_audioDriver_audioInput.disconnect();
_audioDriver_audioInput = null;
if (ref['input']) {
ref['input'].disconnect();
ref['input'] = null;
}
});
}, _driver_id);
/* clang-format on */
input_buffer.clear();
@ -270,8 +293,9 @@ Error AudioDriverJavaScript::capture_stop() {
}
AudioDriverJavaScript::AudioDriverJavaScript() {
_driver_id = 0;
internal_buffer = NULL;
buffer_length = 0;
singleton = this;
}

2
platform/javascript/audio_driver_javascript.h
View File

@ -37,6 +37,7 @@ class AudioDriverJavaScript : public AudioDriver {
float *internal_buffer;
int _driver_id;
int buffer_length;
public:
@ -56,6 +57,7 @@ public:
virtual void lock();
virtual void unlock();
virtual void finish();
void finish_async();
virtual Error capture_start();
virtual Error capture_stop();

124
platform/javascript/detect.py
View File

@ -1,5 +1,7 @@
import os
from emscripten_helpers import parse_config, run_closure_compiler, create_engine_file
def is_active():
return True
@ -19,6 +21,8 @@ def get_opts():
return [
# eval() can be a security concern, so it can be disabled.
BoolVariable("javascript_eval", "Enable JavaScript eval interface", True),
BoolVariable("threads_enabled", "Enable WebAssembly Threads support (limited browser support)", False),
BoolVariable("use_closure_compiler", "Use closure compiler to minimize JavaScript code", False),
]
@ -38,7 +42,7 @@ def configure(env):
## Build type
if env["target"] != "debug":
if env["target"] == "release":
# Use -Os to prioritize optimizing for reduced file size. This is
# particularly valuable for the web platform because it directly
# decreases download time.
@ -47,40 +51,57 @@ def configure(env):
# run-time performance.
env.Append(CCFLAGS=["-Os"])
env.Append(LINKFLAGS=["-Os"])
if env["target"] == "release_debug":
env.Append(CPPDEFINES=["DEBUG_ENABLED"])
# Retain function names for backtraces at the cost of file size.
env.Append(LINKFLAGS=["--profiling-funcs"])
else:
elif env["target"] == "release_debug":
env.Append(CCFLAGS=["-Os"])
env.Append(LINKFLAGS=["-Os"])
env.Append(CPPDEFINES=["DEBUG_ENABLED"])
# Retain function names for backtraces at the cost of file size.
env.Append(LINKFLAGS=["--profiling-funcs"])
else: # "debug"
env.Append(CPPDEFINES=["DEBUG_ENABLED"])
env.Append(CCFLAGS=["-O1", "-g"])
env.Append(LINKFLAGS=["-O1", "-g"])
env.Append(LINKFLAGS=["-s", "ASSERTIONS=1"])
## Compiler configuration
if env["tools"]:
if not env["threads_enabled"]:
raise RuntimeError(
"Threads must be enabled to build the editor. Please add the 'threads_enabled=yes' option"
)
# Tools need more memory. Initial stack memory in bytes. See `src/settings.js` in emscripten repository (will be renamed to INITIAL_MEMORY).
env.Append(LINKFLAGS=["-s", "TOTAL_MEMORY=33554432"])
else:
# Disable exceptions and rtti on non-tools (template) builds
# These flags help keep the file size down.
env.Append(CCFLAGS=["-fno-exceptions", "-fno-rtti"])
# Don't use dynamic_cast, necessary with no-rtti.
env.Append(CPPDEFINES=["NO_SAFE_CAST"])
## Copy env variables.
env["ENV"] = os.environ
em_config_file = os.getenv("EM_CONFIG") or os.path.expanduser("~/.emscripten")
if not os.path.exists(em_config_file):
raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
with open(em_config_file) as f:
em_config = {}
try:
# Emscripten configuration file is a Python file with simple assignments.
exec(f.read(), em_config)
except StandardError as e:
raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
if "BINARYEN_ROOT" in em_config and os.path.isdir(os.path.join(em_config.get("BINARYEN_ROOT"), "emscripten")):
# New style, emscripten path as a subfolder of BINARYEN_ROOT
env.PrependENVPath("PATH", os.path.join(em_config.get("BINARYEN_ROOT"), "emscripten"))
elif "EMSCRIPTEN_ROOT" in em_config:
# Old style (but can be there as a result from previous activation, so do last)
env.PrependENVPath("PATH", em_config.get("EMSCRIPTEN_ROOT"))
else:
raise RuntimeError(
"'BINARYEN_ROOT' or 'EMSCRIPTEN_ROOT' missing in Emscripten configuration file '%s'" % em_config_file
)
# LTO
if env["use_lto"]:
env.Append(CCFLAGS=["-s", "WASM_OBJECT_FILES=0"])
env.Append(LINKFLAGS=["-s", "WASM_OBJECT_FILES=0"])
env.Append(LINKFLAGS=["--llvm-lto", "1"])
# Closure compiler
if env["use_closure_compiler"]:
# For emscripten support code.
env.Append(LINKFLAGS=["--closure", "1"])
# Register builder for our Engine files
jscc = env.Builder(generator=run_closure_compiler, suffix=".cc.js", src_suffix=".js")
env.Append(BUILDERS={"BuildJS": jscc})
# Add method that joins/compiles our Engine files.
env.AddMethod(create_engine_file, "CreateEngineFile")
# Closure compiler extern and support for ecmascript specs (const, let, etc).
env["ENV"]["EMCC_CLOSURE_ARGS"] = "--language_in ECMASCRIPT6"
em_config = parse_config()
env.PrependENVPath("PATH", em_config["EMCC_ROOT"])
env["CC"] = "emcc"
env["CXX"] = "em++"
@ -105,44 +126,31 @@ def configure(env):
env["LIBPREFIXES"] = ["$LIBPREFIX"]
env["LIBSUFFIXES"] = ["$LIBSUFFIX"]
## Compile flags
env.Prepend(CPPPATH=["#platform/javascript"])
env.Append(CPPDEFINES=["JAVASCRIPT_ENABLED", "UNIX_ENABLED"])
# No multi-threading (SharedArrayBuffer) available yet,
# once feasible also consider memory buffer size issues.
env.Append(CPPDEFINES=["NO_THREADS"])
# Disable exceptions and rtti on non-tools (template) builds
if not env["tools"]:
# These flags help keep the file size down.
env.Append(CCFLAGS=["-fno-exceptions", "-fno-rtti"])
# Don't use dynamic_cast, necessary with no-rtti.
env.Append(CPPDEFINES=["NO_SAFE_CAST"])
if env["javascript_eval"]:
env.Append(CPPDEFINES=["JAVASCRIPT_EVAL_ENABLED"])
## Link flags
# Thread support (via SharedArrayBuffer).
if env["threads_enabled"]:
env.Append(CPPDEFINES=["PTHREAD_NO_RENAME"])
env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=4"])
env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
else:
env.Append(CPPDEFINES=["NO_THREADS"])
# Reduce code size by generating less support code (e.g. skip NodeJS support).
env.Append(LINKFLAGS=["-s", "ENVIRONMENT=web,worker"])
# We use IDBFS in javascript_main.cpp. Since Emscripten 1.39.1 it needs to
# be linked explicitly.
env.Append(LIBS=["idbfs.js"])
env.Append(LINKFLAGS=["-s", "BINARYEN=1"])
# Only include the JavaScript support code for the web environment
# (i.e. exclude Node.js and other unused environments).
# This makes the JavaScript support code about 4 KB smaller.
env.Append(LINKFLAGS=["-s", "ENVIRONMENT=web"])
# This needs to be defined for Emscripten using 'fastcomp' (default pre-1.39.0)
# and undefined if using 'upstream'. And to make things simple, earlier
# Emscripten versions didn't include 'fastcomp' in their path, so we check
# against the presence of 'upstream' to conditionally add the flag.
if not "upstream" in em_config["EMSCRIPTEN_ROOT"]:
env.Append(LINKFLAGS=["-s", "BINARYEN_TRAP_MODE='clamp'"])
env.Append(LINKFLAGS=["-s", "MODULARIZE=1", "-s", "EXPORT_NAME='Godot'"])
# Allow increasing memory buffer size during runtime. This is efficient
# when using WebAssembly (in comparison to asm.js) and works well for
@ -154,8 +162,10 @@ def configure(env):
env.Append(LINKFLAGS=["-s", "INVOKE_RUN=0"])
# TODO: Reevaluate usage of this setting now that engine.js manages engine runtime.
env.Append(LINKFLAGS=["-s", "NO_EXIT_RUNTIME=1"])
# Allow use to take control of swapping WebGL buffers.
env.Append(LINKFLAGS=["-s", "OFFSCREEN_FRAMEBUFFER=1"])
# adding flag due to issue with emscripten 1.38.41 callMain method https://github.com/emscripten-core/emscripten/blob/incoming/ChangeLog.md#v13841-08072019
env.Append(LINKFLAGS=["-s", 'EXTRA_EXPORTED_RUNTIME_METHODS=["callMain"]'])
# callMain for manual start, FS for preloading, PATH and ERRNO_CODES for BrowserFS.
env.Append(LINKFLAGS=["-s", "EXTRA_EXPORTED_RUNTIME_METHODS=['callMain', 'FS']"])
# Add code that allow exiting runtime.
env.Append(LINKFLAGS=["-s", "EXIT_RUNTIME=1"])

38
platform/javascript/emscripten_helpers.py Normal file
View File

@ -0,0 +1,38 @@
import os
def parse_config():
em_config_file = os.getenv("EM_CONFIG") or os.path.expanduser("~/.emscripten")
if not os.path.exists(em_config_file):
raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
normalized = {}
em_config = {}
with open(em_config_file) as f:
try:
# Emscripten configuration file is a Python file with simple assignments.
exec(f.read(), em_config)
except StandardError as e:
raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
normalized["EMCC_ROOT"] = em_config.get("EMSCRIPTEN_ROOT")
normalized["NODE_JS"] = em_config.get("NODE_JS")
normalized["CLOSURE_BIN"] = os.path.join(normalized["EMCC_ROOT"], "node_modules", ".bin", "google-closure-compiler")
return normalized
def run_closure_compiler(target, source, env, for_signature):
cfg = parse_config()
cmd = [cfg["NODE_JS"], cfg["CLOSURE_BIN"]]
cmd.extend(["--compilation_level", "ADVANCED_OPTIMIZATIONS"])
for f in env["JSEXTERNS"]:
cmd.extend(["--externs", f.get_abspath()])
for f in source:
cmd.extend(["--js", f.get_abspath()])
cmd.extend(["--js_output_file", target[0].get_abspath()])
return " ".join(cmd)
def create_engine_file(env, target, source, externs):
if env["use_closure_compiler"]:
return env.BuildJS(target, source, JSEXTERNS=externs)
return env.Textfile(target, [env.File(s) for s in source])

411
platform/javascript/engine.js
View File

@ -1,411 +0,0 @@
// The following is concatenated with generated code, and acts as the end
// of a wrapper for said code. See pre.js for the other part of the
// wrapper.
exposedLibs['PATH'] = PATH;
exposedLibs['FS'] = FS;
return Module;
},
};
(function() {
var engine = Engine;
var DOWNLOAD_ATTEMPTS_MAX = 4;
var basePath = null;
var wasmFilenameExtensionOverride = null;
var engineLoadPromise = null;
var loadingFiles = {};
function getPathLeaf(path) {
while (path.endsWith('/'))
path = path.slice(0, -1);
return path.slice(path.lastIndexOf('/') + 1);
}
function getBasePath(path) {
if (path.endsWith('/'))
path = path.slice(0, -1);
if (path.lastIndexOf('.') > path.lastIndexOf('/'))
path = path.slice(0, path.lastIndexOf('.'));
return path;
}
function getBaseName(path) {
return getPathLeaf(getBasePath(path));
}
Engine = function Engine() {
this.rtenv = null;
var LIBS = {};
var initPromise = null;
var unloadAfterInit = true;
var preloadedFiles = [];
var resizeCanvasOnStart = true;
var progressFunc = null;
var preloadProgressTracker = {};
var lastProgress = { loaded: 0, total: 0 };
var canvas = null;
var executableName = null;
var locale = null;
var stdout = null;
var stderr = null;
this.init = function(newBasePath) {
if (!initPromise) {
initPromise = Engine.load(newBasePath).then(
instantiate.bind(this)
);
requestAnimationFrame(animateProgress);
if (unloadAfterInit)
initPromise.then(Engine.unloadEngine);
}
return initPromise;
};
function instantiate(wasmBuf) {
var rtenvProps = {
engine: this,
ENV: {},
};
if (typeof stdout === 'function')
rtenvProps.print = stdout;
if (typeof stderr === 'function')
rtenvProps.printErr = stderr;
rtenvProps.instantiateWasm = function(imports, onSuccess) {
WebAssembly.instantiate(wasmBuf, imports).then(function(result) {
onSuccess(result.instance);
});
return {};
};
return new Promise(function(resolve, reject) {
rtenvProps.onRuntimeInitialized = resolve;
rtenvProps.onAbort = reject;
rtenvProps.thisProgram = executableName;
rtenvProps.engine.rtenv = Engine.RuntimeEnvironment(rtenvProps, LIBS);
});
}
this.preloadFile = function(pathOrBuffer, destPath) {
if (pathOrBuffer instanceof ArrayBuffer) {
pathOrBuffer = new Uint8Array(pathOrBuffer);
} else if (ArrayBuffer.isView(pathOrBuffer)) {
pathOrBuffer = new Uint8Array(pathOrBuffer.buffer);
}
if (pathOrBuffer instanceof Uint8Array) {
preloadedFiles.push({
path: destPath,
buffer: pathOrBuffer
});
return Promise.resolve();
} else if (typeof pathOrBuffer === 'string') {
return loadPromise(pathOrBuffer, preloadProgressTracker).then(function(xhr) {
preloadedFiles.push({
path: destPath || pathOrBuffer,
buffer: xhr.response
});
});
} else {
throw Promise.reject("Invalid object for preloading");
}
};
this.start = function() {
return this.init().then(
Function.prototype.apply.bind(synchronousStart, this, arguments)
);
};
this.startGame = function(execName, mainPack) {
executableName = execName;
var mainArgs = [ '--main-pack', getPathLeaf(mainPack) ];
return Promise.all([
this.init(getBasePath(execName)),
this.preloadFile(mainPack, getPathLeaf(mainPack))
]).then(
Function.prototype.apply.bind(synchronousStart, this, mainArgs)
);
};
function synchronousStart() {
if (canvas instanceof HTMLCanvasElement) {
this.rtenv.canvas = canvas;
} else {
var firstCanvas = document.getElementsByTagName('canvas')[0];
if (firstCanvas instanceof HTMLCanvasElement) {
this.rtenv.canvas = firstCanvas;
} else {
throw new Error("No canvas found");
}
}
var actualCanvas = this.rtenv.canvas;
// canvas can grab focus on click
if (actualCanvas.tabIndex < 0) {
actualCanvas.tabIndex = 0;
}
// necessary to calculate cursor coordinates correctly
actualCanvas.style.padding = 0;
actualCanvas.style.borderWidth = 0;
actualCanvas.style.borderStyle = 'none';
// disable right-click context menu
actualCanvas.addEventListener('contextmenu', function(ev) {
ev.preventDefault();
}, false);
// until context restoration is implemented
actualCanvas.addEventListener('webglcontextlost', function(ev) {
alert("WebGL context lost, please reload the page");
ev.preventDefault();
}, false);
if (locale) {
this.rtenv.locale = locale;
} else {
this.rtenv.locale = navigator.languages ? navigator.languages[0] : navigator.language;
}
this.rtenv.locale = this.rtenv.locale.split('.')[0];
this.rtenv.resizeCanvasOnStart = resizeCanvasOnStart;
preloadedFiles.forEach(function(file) {
var dir = LIBS.PATH.dirname(file.path);
try {
LIBS.FS.stat(dir);
} catch (e) {
if (e.code !== 'ENOENT') {
throw e;
}
LIBS.FS.mkdirTree(dir);
}
// With memory growth, canOwn should be false.
LIBS.FS.createDataFile(file.path, null, new Uint8Array(file.buffer), true, true, false);
}, this);
preloadedFiles = null;
initPromise = null;
this.rtenv.callMain(arguments);
}
this.setProgressFunc = function(func) {
progressFunc = func;
};
this.setResizeCanvasOnStart = function(enabled) {
resizeCanvasOnStart = enabled;
};
function animateProgress() {
var loaded = 0;
var total = 0;
var totalIsValid = true;
var progressIsFinal = true;
[loadingFiles, preloadProgressTracker].forEach(function(tracker) {
Object.keys(tracker).forEach(function(file) {
if (!tracker[file].final)
progressIsFinal = false;
if (!totalIsValid || tracker[file].total === 0) {
totalIsValid = false;
total = 0;
} else {
total += tracker[file].total;
}
loaded += tracker[file].loaded;
});
});
if (loaded !== lastProgress.loaded || total !== lastProgress.total) {
lastProgress.loaded = loaded;
lastProgress.total = total;
if (typeof progressFunc === 'function')
progressFunc(loaded, total);
}
if (!progressIsFinal)
requestAnimationFrame(animateProgress);
}
this.setCanvas = function(elem) {
canvas = elem;
};
this.setExecutableName = function(newName) {
executableName = newName;
};
this.setLocale = function(newLocale) {
locale = newLocale;
};
this.setUnloadAfterInit = function(enabled) {
if (enabled && !unloadAfterInit && initPromise) {
initPromise.then(Engine.unloadEngine);
}
unloadAfterInit = enabled;
};
this.setStdoutFunc = function(func) {
var print = function(text) {
if (arguments.length > 1) {
text = Array.prototype.slice.call(arguments).join(" ");
}
func(text);
};
if (this.rtenv)
this.rtenv.print = print;
stdout = print;
};
this.setStderrFunc = function(func) {
var printErr = function(text) {
if (arguments.length > 1)
text = Array.prototype.slice.call(arguments).join(" ");
func(text);
};
if (this.rtenv)
this.rtenv.printErr = printErr;
stderr = printErr;
};
}; // Engine()
Engine.RuntimeEnvironment = engine.RuntimeEnvironment;
Engine.isWebGLAvailable = function(majorVersion = 1) {
var testContext = false;
try {
var testCanvas = document.createElement('canvas');
if (majorVersion === 1) {
testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
} else if (majorVersion === 2) {
testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
}
} catch (e) {}
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);
if (engineLoadPromise === null) {
if (typeof WebAssembly !== 'object')
return Promise.reject(new Error("Browser doesn't support WebAssembly"));
// TODO cache/retrieve module to/from idb
engineLoadPromise = loadPromise(basePath + '.' + (wasmFilenameExtensionOverride || 'wasm')).then(function(xhr) {
return xhr.response;
});
engineLoadPromise = engineLoadPromise.catch(function(err) {
engineLoadPromise = null;
throw err;
});
}
return engineLoadPromise;
};
Engine.unload = function() {
engineLoadPromise = null;
};
function loadPromise(file, tracker) {
if (tracker === undefined)
tracker = loadingFiles;
return new Promise(function(resolve, reject) {
loadXHR(resolve, reject, file, tracker);
});
}
function loadXHR(resolve, reject, file, tracker) {
var xhr = new XMLHttpRequest;
xhr.open('GET', file);
if (!file.endsWith('.js')) {
xhr.responseType = 'arraybuffer';
}
['loadstart', 'progress', 'load', 'error', 'abort'].forEach(function(ev) {
xhr.addEventListener(ev, onXHREvent.bind(xhr, resolve, reject, file, tracker));
});
xhr.send();
}
function onXHREvent(resolve, reject, file, tracker, ev) {
if (this.status >= 400) {
if (this.status < 500 || ++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
reject(new Error("Failed loading file '" + file + "': " + this.statusText));
this.abort();
return;
} else {
setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
}
}
switch (ev.type) {
case 'loadstart':
if (tracker[file] === undefined) {
tracker[file] = {
total: ev.total,
loaded: ev.loaded,
attempts: 0,
final: false,
};
}
break;
case 'progress':
tracker[file].loaded = ev.loaded;
tracker[file].total = ev.total;
break;
case 'load':
tracker[file].final = true;
resolve(this);
break;
case 'error':
if (++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
tracker[file].final = true;
reject(new Error("Failed loading file '" + file + "'"));
} else {
setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
}
break;
case 'abort':
tracker[file].final = true;
reject(new Error("Loading file '" + file + "' was aborted."));
break;
}
}
})();

245
platform/javascript/engine/engine.js Normal file
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@ -0,0 +1,245 @@
Function('return this')()['Engine'] = (function() {
var preloader = new Preloader();
var wasmExt = '.wasm';
var unloadAfterInit = true;
var loadPath = '';
var loadPromise = null;
var initPromise = null;
var stderr = null;
var stdout = null;
var progressFunc = null;
function load(basePath) {
if (loadPromise == null) {
loadPath = basePath;
loadPromise = preloader.loadPromise(basePath + wasmExt);
preloader.setProgressFunc(progressFunc);
requestAnimationFrame(preloader.animateProgress);
}
return loadPromise;
};
function unload() {
loadPromise = null;
};
/** @constructor */
function Engine() {
this.canvas = null;
this.executableName = '';
this.rtenv = null;
this.customLocale = null;
this.resizeCanvasOnStart = false;
this.onExecute = null;
this.onExit = null;
};
Engine.prototype.init = /** @param {string=} basePath */ function(basePath) {
if (initPromise) {
return initPromise;
}
if (loadPromise == null) {
if (!basePath) {
initPromise = Promise.reject(new Error("A base path must be provided when calling `init` and the engine is not loaded."));
return initPromise;
}
load(basePath);
}
var config = {};
if (typeof stdout === 'function')
config.print = stdout;
if (typeof stderr === 'function')
config.printErr = stderr;
var me = this;
initPromise = new Promise(function(resolve, reject) {
config['locateFile'] = Utils.createLocateRewrite(loadPath);
config['instantiateWasm'] = Utils.createInstantiatePromise(loadPromise);
Godot(config).then(function(module) {
me.rtenv = module;
if (unloadAfterInit) {
unload();
}
resolve();
config = null;
});
});
return initPromise;
};
/** @type {function(string, string):Object} */
Engine.prototype.preloadFile = function(file, path) {
return preloader.preload(file, path);
};
/** @type {function(...string):Object} */
Engine.prototype.start = function() {
// Start from arguments.
var args = [];
for (var i = 0; i < arguments.length; i++) {
args.push(arguments[i]);
}
var me = this;
return me.init().then(function() {
if (!me.rtenv) {
return Promise.reject(new Error('The engine must be initialized before it can be started'));
}
if (!(me.canvas instanceof HTMLCanvasElement)) {
me.canvas = Utils.findCanvas();
}
// Canvas can grab focus on click, or key events won't work.
if (me.canvas.tabIndex < 0) {
me.canvas.tabIndex = 0;
}
// Disable right-click context menu.
me.canvas.addEventListener('contextmenu', function(ev) {
ev.preventDefault();
}, false);
// Until context restoration is implemented warn the user of context loss.
me.canvas.addEventListener('webglcontextlost', function(ev) {
alert("WebGL context lost, please reload the page");
ev.preventDefault();
}, false);
// Browser locale, or custom one if defined.
var locale = me.customLocale;
if (!locale) {
locale = navigator.languages ? navigator.languages[0] : navigator.language;
locale = locale.split('.')[0];
}
me.rtenv['locale'] = locale;
me.rtenv['canvas'] = me.canvas;
me.rtenv['thisProgram'] = me.executableName;
me.rtenv['resizeCanvasOnStart'] = me.resizeCanvasOnStart;
me.rtenv['noExitRuntime'] = true;
me.rtenv['onExecute'] = me.onExecute;
me.rtenv['onExit'] = function(code) {
if (me.onExit)
me.onExit(code);
me.rtenv = null;
}
return new Promise(function(resolve, reject) {
preloader.preloadedFiles.forEach(function(file) {
me.rtenv['copyToFS'](file.path, file.buffer);
});
preloader.preloadedFiles.length = 0; // Clear memory
me.rtenv['callMain'](args);
initPromise = null;
resolve();
});
});
};
Engine.prototype.startGame = function(execName, mainPack, extraArgs) {
// Start and init with execName as loadPath if not inited.
this.executableName = execName;
var me = this;
return Promise.all([
this.init(execName),
this.preloadFile(mainPack, mainPack)
]).then(function() {
var args = ['--main-pack', mainPack];
if (extraArgs)
args = args.concat(extraArgs);
return me.start.apply(me, args);
});
};
Engine.prototype.setWebAssemblyFilenameExtension = function(override) {
if (String(override).length === 0) {
throw new Error('Invalid WebAssembly filename extension override');
}
wasmExt = String(override);
};
Engine.prototype.setUnloadAfterInit = function(enabled) {
unloadAfterInit = enabled;
};
Engine.prototype.setCanvas = function(canvasElem) {
this.canvas = canvasElem;
};
Engine.prototype.setCanvasResizedOnStart = function(enabled) {
this.resizeCanvasOnStart = enabled;
};
Engine.prototype.setLocale = function(locale) {
this.customLocale = locale;
};
Engine.prototype.setExecutableName = function(newName) {
this.executableName = newName;
};
Engine.prototype.setProgressFunc = function(func) {
progressFunc = func;
};
Engine.prototype.setStdoutFunc = function(func) {
var print = function(text) {
if (arguments.length > 1) {
text = Array.prototype.slice.call(arguments).join(" ");
}
func(text);
};
if (this.rtenv)
this.rtenv.print = print;
stdout = print;
};
Engine.prototype.setStderrFunc = function(func) {
var printErr = function(text) {
if (arguments.length > 1)
text = Array.prototype.slice.call(arguments).join(" ");
func(text);
};
if (this.rtenv)
this.rtenv.printErr = printErr;
stderr = printErr;
};
Engine.prototype.setOnExecute = function(onExecute) {
if (this.rtenv)
this.rtenv.onExecute = onExecute;
this.onExecute = onExecute;
}
Engine.prototype.setOnExit = function(onExit) {
this.onExit = onExit;
}
Engine.prototype.copyToFS = function(path, buffer) {
if (this.rtenv == null) {
throw new Error("Engine must be inited before copying files");
}
this.rtenv['copyToFS'](path, buffer);
}
// Closure compiler exported engine methods.
/** @export */
Engine['isWebGLAvailable'] = Utils.isWebGLAvailable;
Engine['load'] = load;
Engine['unload'] = unload;
Engine.prototype['init'] = Engine.prototype.init;
Engine.prototype['preloadFile'] = Engine.prototype.preloadFile;
Engine.prototype['start'] = Engine.prototype.start;
Engine.prototype['startGame'] = Engine.prototype.startGame;
Engine.prototype['setWebAssemblyFilenameExtension'] = Engine.prototype.setWebAssemblyFilenameExtension;
Engine.prototype['setUnloadAfterInit'] = Engine.prototype.setUnloadAfterInit;
Engine.prototype['setCanvas'] = Engine.prototype.setCanvas;
Engine.prototype['setCanvasResizedOnStart'] = Engine.prototype.setCanvasResizedOnStart;
Engine.prototype['setLocale'] = Engine.prototype.setLocale;
Engine.prototype['setExecutableName'] = Engine.prototype.setExecutableName;
Engine.prototype['setProgressFunc'] = Engine.prototype.setProgressFunc;
Engine.prototype['setStdoutFunc'] = Engine.prototype.setStdoutFunc;
Engine.prototype['setStderrFunc'] = Engine.prototype.setStderrFunc;
Engine.prototype['setOnExecute'] = Engine.prototype.setOnExecute;
Engine.prototype['setOnExit'] = Engine.prototype.setOnExit;
Engine.prototype['copyToFS'] = Engine.prototype.copyToFS;
return Engine;
})();

3
platform/javascript/engine/externs.js Normal file
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@ -0,0 +1,3 @@
var Godot;
var WebAssembly = {};
WebAssembly.instantiate = function(buffer, imports) {};

139
platform/javascript/engine/preloader.js Normal file
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@ -0,0 +1,139 @@
var Preloader = /** @constructor */ function() {
var DOWNLOAD_ATTEMPTS_MAX = 4;
var progressFunc = null;
var lastProgress = { loaded: 0, total: 0 };
var loadingFiles = {};
this.preloadedFiles = [];
function loadXHR(resolve, reject, file, tracker) {
var xhr = new XMLHttpRequest;
xhr.open('GET', file);
if (!file.endsWith('.js')) {
xhr.responseType = 'arraybuffer';
}
['loadstart', 'progress', 'load', 'error', 'abort'].forEach(function(ev) {
xhr.addEventListener(ev, onXHREvent.bind(xhr, resolve, reject, file, tracker));
});
xhr.send();
}
function onXHREvent(resolve, reject, file, tracker, ev) {
if (this.status >= 400) {
if (this.status < 500 || ++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
reject(new Error("Failed loading file '" + file + "': " + this.statusText));
this.abort();
return;
} else {
setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
}
}
switch (ev.type) {
case 'loadstart':
if (tracker[file] === undefined) {
tracker[file] = {
total: ev.total,
loaded: ev.loaded,
attempts: 0,
final: false,
};
}
break;
case 'progress':
tracker[file].loaded = ev.loaded;
tracker[file].total = ev.total;
break;
case 'load':
tracker[file].final = true;
resolve(this);
break;
case 'error':
if (++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
tracker[file].final = true;
reject(new Error("Failed loading file '" + file + "'"));
} else {
setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
}
break;
case 'abort':
tracker[file].final = true;
reject(new Error("Loading file '" + file + "' was aborted."));
break;
}
}
this.loadPromise = function(file) {
return new Promise(function(resolve, reject) {
loadXHR(resolve, reject, file, loadingFiles);
});
}
this.preload = function(pathOrBuffer, destPath) {
if (pathOrBuffer instanceof ArrayBuffer) {
pathOrBuffer = new Uint8Array(pathOrBuffer);
} else if (ArrayBuffer.isView(pathOrBuffer)) {
pathOrBuffer = new Uint8Array(pathOrBuffer.buffer);
}
if (pathOrBuffer instanceof Uint8Array) {
this.preloadedFiles.push({
path: destPath,
buffer: pathOrBuffer
});
return Promise.resolve();
} else if (typeof pathOrBuffer === 'string') {
var me = this;
return this.loadPromise(pathOrBuffer).then(function(xhr) {
me.preloadedFiles.push({
path: destPath || pathOrBuffer,
buffer: xhr.response
});
return Promise.resolve();
});
} else {
throw Promise.reject("Invalid object for preloading");
}
};
var animateProgress = function() {
var loaded = 0;
var total = 0;
var totalIsValid = true;
var progressIsFinal = true;
Object.keys(loadingFiles).forEach(function(file) {
const stat = loadingFiles[file];
if (!stat.final) {
progressIsFinal = false;
}
if (!totalIsValid || stat.total === 0) {
totalIsValid = false;
total = 0;
} else {
total += stat.total;
}
loaded += stat.loaded;
});
if (loaded !== lastProgress.loaded || total !== lastProgress.total) {
lastProgress.loaded = loaded;
lastProgress.total = total;
if (typeof progressFunc === 'function')
progressFunc(loaded, total);
}
if (!progressIsFinal)
requestAnimationFrame(animateProgress);
}
this.animateProgress = animateProgress; // Also exposed to start it.
this.setProgressFunc = function(callback) {
progressFunc = callback;
}
};

51
platform/javascript/engine/utils.js Normal file
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@ -0,0 +1,51 @@
var Utils = {
createLocateRewrite: function(execName) {
function rw(path) {
if (path.endsWith('.worker.js')) {
return execName + '.worker.js';
} else if (path.endsWith('.js')) {
return execName + '.js';
} else if (path.endsWith('.wasm')) {
return execName + '.wasm';
}
}
return rw;
},
createInstantiatePromise: function(wasmLoader) {
function instantiateWasm(imports, onSuccess) {
wasmLoader.then(function(xhr) {
WebAssembly.instantiate(xhr.response, imports).then(function(result) {
onSuccess(result['instance'], result['module']);
});
});
wasmLoader = null;
return {};
};
return instantiateWasm;
},
findCanvas: function() {
var nodes = document.getElementsByTagName('canvas');
if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
return nodes[0];
}
throw new Error("No canvas found");
},
isWebGLAvailable: function(majorVersion = 1) {
var testContext = false;
try {
var testCanvas = document.createElement('canvas');
if (majorVersion === 1) {
testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
} else if (majorVersion === 2) {
testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
}
} catch (e) {}
return !!testContext;
}
};

8
platform/javascript/export/export.cpp
View File

@ -94,6 +94,9 @@ public:
} else if (req[1] == basereq + ".js") {
filepath += ".js";
ctype = "application/javascript";
} else if (req[1] == basereq + ".worker.js") {
filepath += ".worker.js";
ctype = "application/javascript";
} else if (req[1] == basereq + ".pck") {
filepath += ".pck";
ctype = "application/octet-stream";
@ -435,6 +438,10 @@ Error EditorExportPlatformJavaScript::export_project(const Ref<EditorExportPrese
} else if (file == "godot.js") {
file = p_path.get_file().get_basename() + ".js";
} else if (file == "godot.worker.js") {
file = p_path.get_file().get_basename() + ".worker.js";
} else if (file == "godot.wasm") {
file = p_path.get_file().get_basename() + ".wasm";
@ -568,6 +575,7 @@ Error EditorExportPlatformJavaScript::run(const Ref<EditorExportPreset> &p_prese
// Export generates several files, clean them up on failure.
DirAccess::remove_file_or_error(basepath + ".html");
DirAccess::remove_file_or_error(basepath + ".js");
DirAccess::remove_file_or_error(basepath + ".worker.js");
DirAccess::remove_file_or_error(basepath + ".pck");
DirAccess::remove_file_or_error(basepath + ".png");
DirAccess::remove_file_or_error(basepath + ".wasm");

79
platform/javascript/javascript_main.cpp
View File

@ -34,27 +34,98 @@
#include <emscripten/emscripten.h>
static OS_JavaScript *os = NULL;
// Files drop (implemented in JS for now).
extern "C" EMSCRIPTEN_KEEPALIVE void _drop_files_callback(char *p_filev[], int p_filec) {
if (!os || !os->get_main_loop()) {
ERR_FAIL_MSG("Unable to drop files because the OS or MainLoop are not active");
}
Vector<String> files;
for (int i = 0; i < p_filec; i++) {
files.push_back(String::utf8(p_filev[i]));
}
os->get_main_loop()->drop_files(files);
}
void exit_callback() {
emscripten_cancel_main_loop(); // After this, we can exit!
Main::cleanup();
int exit_code = OS_JavaScript::get_singleton()->get_exit_code();
memdelete(os);
os = NULL;
emscripten_force_exit(exit_code); // No matter that we call cancel_main_loop, regular "exit" will not work, forcing.
}
void main_loop_callback() {
if (os->main_loop_iterate()) {
emscripten_cancel_main_loop(); // Cancel current loop and wait for finalize_async.
EM_ASM({
// This will contain the list of operations that need to complete before cleanup.
Module.async_finish = [];
});
os->get_main_loop()->finish();
os->finalize_async(); // Will add all the async finish functions.
EM_ASM({
Promise.all(Module.async_finish).then(function() {
Module.async_finish = [];
ccall("cleanup_after_sync", null, []);
});
});
}
}
extern "C" EMSCRIPTEN_KEEPALIVE void cleanup_after_sync() {
emscripten_set_main_loop(exit_callback, -1, false);
}
extern "C" EMSCRIPTEN_KEEPALIVE void main_after_fs_sync(char *p_idbfs_err) {
OS_JavaScript *os = OS_JavaScript::get_singleton();
// Set IDBFS status
String idbfs_err = String::utf8(p_idbfs_err);
if (!idbfs_err.empty()) {
print_line("IndexedDB not available: " + idbfs_err);
}
OS_JavaScript *os = OS_JavaScript::get_singleton();
os->set_idb_available(idbfs_err.empty());
// Set canvas ID
char canvas_ptr[256];
/* clang-format off */
EM_ASM({
stringToUTF8("#" + Module['canvas'].id, $0, 255);
}, canvas_ptr);
/* clang-format on */
os->canvas_id.parse_utf8(canvas_ptr, 255);
// Set locale
char locale_ptr[16];
/* clang-format off */
EM_ASM({
stringToUTF8(Module['locale'], $0, 16);
}, locale_ptr);
/* clang-format on */
setenv("LANG", locale_ptr, true);
Main::setup2();
// Ease up compatibility.
ResourceLoader::set_abort_on_missing_resources(false);
Main::start();
os->run_async();
os->main_loop_iterate();
os->get_main_loop()->init();
main_loop_callback();
emscripten_resume_main_loop();
}
int main(int argc, char *argv[]) {
new OS_JavaScript(argc, argv);
os = new OS_JavaScript(argc, argv);
// TODO: Check error return value.
Main::setup(argv[0], argc - 1, &argv[1], false);
emscripten_set_main_loop(main_loop_callback, -1, false);
emscripten_pause_main_loop(); // Will need to wait for FS sync.
// Sync from persistent state into memory and then
// run the 'main_after_fs_sync' function.

0
platform/javascript/http_request.js → platform/javascript/native/http_request.js
View File

2
platform/javascript/id_handler.js → platform/javascript/native/id_handler.js
View File

@ -28,7 +28,7 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
var IDHandler = function() {
var IDHandler = /** @constructor */ function() {
var ids = {};
var size = 0;

204
platform/javascript/native/utils.js Normal file
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@ -0,0 +1,204 @@
/*************************************************************************/
/* utils.js */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
Module['copyToFS'] = function(path, buffer) {
var p = path.lastIndexOf("/");
var dir = "/";
if (p > 0) {
dir = path.slice(0, path.lastIndexOf("/"));
}
try {
FS.stat(dir);
} catch (e) {
if (e.errno !== ERRNO_CODES.ENOENT) { // 'ENOENT', see https://github.com/emscripten-core/emscripten/blob/master/system/lib/libc/musl/arch/emscripten/bits/errno.h
throw e;
}
FS.mkdirTree(dir);
}
// With memory growth, canOwn should be false.
FS.writeFile(path, new Uint8Array(buffer), {'flags': 'wx+'});
}
Module.drop_handler = (function() {
var upload = [];
var uploadPromises = [];
var uploadCallback = null;
function readFilePromise(entry, path) {
return new Promise(function(resolve, reject) {
entry.file(function(file) {
var reader = new FileReader();
reader.onload = function() {
var f = {
"path": file.relativePath || file.webkitRelativePath,
"name": file.name,
"type": file.type,
"size": file.size,
"data": reader.result
};
if (!f['path'])
f['path'] = f['name'];
upload.push(f);
resolve()
};
reader.onerror = function() {
console.log("Error reading file");
reject();
}
reader.readAsArrayBuffer(file);
}, function(err) {
console.log("Error!");
reject();
});
});
}
function readDirectoryPromise(entry) {
return new Promise(function(resolve, reject) {
var reader = entry.createReader();
reader.readEntries(function(entries) {
for (var i = 0; i < entries.length; i++) {
var ent = entries[i];
if (ent.isDirectory) {
uploadPromises.push(readDirectoryPromise(ent));
} else if (ent.isFile) {
uploadPromises.push(readFilePromise(ent));
}
}
resolve();
});
});
}
function processUploadsPromises(resolve, reject) {
if (uploadPromises.length == 0) {
resolve();
return;
}
uploadPromises.pop().then(function() {
setTimeout(function() {
processUploadsPromises(resolve, reject);
//processUploadsPromises.bind(null, resolve, reject)
}, 0);
});
}
function dropFiles(files) {
var args = files || [];
var argc = args.length;
var argv = stackAlloc((argc + 1) * 4);
for (var i = 0; i < argc; i++) {
HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i]);
}
HEAP32[(argv >> 2) + argc] = 0;
// Defined in javascript_main.cpp
ccall('_drop_files_callback', 'void', ['number', 'number'], [argv, argc]);
}
return function(ev) {
ev.preventDefault();
if (ev.dataTransfer.items) {
// Use DataTransferItemList interface to access the file(s)
for (var i = 0; i < ev.dataTransfer.items.length; i++) {
const item = ev.dataTransfer.items[i];
var entry = null;
if ("getAsEntry" in item) {
entry = item.getAsEntry();
} else if ("webkitGetAsEntry" in item) {
entry = item.webkitGetAsEntry();
}
if (!entry) {
console.error("File upload not supported");
} else if (entry.isDirectory) {
uploadPromises.push(readDirectoryPromise(entry));
} else if (entry.isFile) {
uploadPromises.push(readFilePromise(entry));
} else {
console.error("Unrecognized entry...", entry);
}
}
} else {
console.error("File upload not supported");
}
uploadCallback = new Promise(processUploadsPromises).then(function() {
const DROP = "/tmp/drop-" + parseInt(Math.random() * Math.pow(2, 31)) + "/";
var drops = [];
var files = [];
upload.forEach((elem) => {
var path = elem['path'];
Module['copyToFS'](DROP + path, elem['data']);
var idx = path.indexOf("/");
if (idx == -1) {
// Root file
drops.push(DROP + path);
} else {
// Subdir
var sub = path.substr(0, idx);
idx = sub.indexOf("/");
if (idx < 0 && drops.indexOf(DROP + sub) == -1) {
drops.push(DROP + sub);
}
}
files.push(DROP + path);
});
uploadPromises = [];
upload = [];
dropFiles(drops);
var dirs = [DROP.substr(0, DROP.length -1)];
files.forEach(function (file) {
FS.unlink(file);
var dir = file.replace(DROP, "");
var idx = dir.lastIndexOf("/");
while (idx > 0) {
dir = dir.substr(0, idx);
if (dirs.indexOf(DROP + dir) == -1) {
dirs.push(DROP + dir);
}
idx = dir.lastIndexOf("/");
}
});
// Remove dirs.
dirs = dirs.sort(function(a, b) {
var al = (a.match(/\//g) || []).length;
var bl = (b.match(/\//g) || []).length;
if (al > bl)
return -1;
else if (al < bl)
return 1;
return 0;
});
dirs.forEach(function(dir) {
FS.rmdir(dir);
});
});
}
})();

203
platform/javascript/os_javascript.cpp
View File

@ -31,12 +31,16 @@
#include "os_javascript.h"
#include "core/io/file_access_buffered_fa.h"
#include "core/io/json.h"
#include "drivers/gles2/rasterizer_gles2.h"
#include "drivers/gles3/rasterizer_gles3.h"
#include "drivers/unix/dir_access_unix.h"
#include "drivers/unix/file_access_unix.h"
#include "main/main.h"
#include "servers/visual/visual_server_raster.h"
#ifndef NO_THREADS
#include "servers/visual/visual_server_wrap_mt.h"
#endif
#include <emscripten.h>
#include <png.h>
@ -49,42 +53,42 @@
#define DOM_BUTTON_RIGHT 2
#define DOM_BUTTON_XBUTTON1 3
#define DOM_BUTTON_XBUTTON2 4
#define GODOT_CANVAS_SELECTOR "#canvas"
// Window (canvas)
static void focus_canvas() {
/* clang-format off */
EM_ASM(
Module.canvas.focus();
);
EM_ASM({
Module['canvas'].focus();
});
/* clang-format on */
}
static bool is_canvas_focused() {
/* clang-format off */
return EM_ASM_INT_V(
return document.activeElement == Module.canvas;
);
return EM_ASM_INT({
return document.activeElement == Module['canvas'];
});
/* clang-format on */
}
static Point2 compute_position_in_canvas(int x, int y) {
OS_JavaScript *os = OS_JavaScript::get_singleton();
int canvas_x = EM_ASM_INT({
return document.getElementById('canvas').getBoundingClientRect().x;
return Module['canvas'].getBoundingClientRect().x;
});
int canvas_y = EM_ASM_INT({
return document.getElementById('canvas').getBoundingClientRect().y;
return Module['canvas'].getBoundingClientRect().y;
});
int canvas_width;
int canvas_height;
emscripten_get_canvas_element_size(GODOT_CANVAS_SELECTOR, &canvas_width, &canvas_height);
emscripten_get_canvas_element_size(os->canvas_id.utf8().get_data(), &canvas_width, &canvas_height);
double element_width;
double element_height;
emscripten_get_element_css_size(GODOT_CANVAS_SELECTOR, &element_width, &element_height);
emscripten_get_element_css_size(os->canvas_id.utf8().get_data(), &element_width, &element_height);
return Point2((int)(canvas_width / element_width * (x - canvas_x)),
(int)(canvas_height / element_height * (y - canvas_y)));
@ -141,14 +145,14 @@ void OS_JavaScript::set_window_size(const Size2 p_size) {
emscripten_exit_soft_fullscreen();
window_maximized = false;
}
emscripten_set_canvas_element_size(GODOT_CANVAS_SELECTOR, p_size.x, p_size.y);
emscripten_set_canvas_element_size(canvas_id.utf8().get_data(), p_size.x, p_size.y);
}
}
Size2 OS_JavaScript::get_window_size() const {
int canvas[2];
emscripten_get_canvas_element_size(GODOT_CANVAS_SELECTOR, canvas, canvas + 1);
emscripten_get_canvas_element_size(canvas_id.utf8().get_data(), canvas, canvas + 1);
return Size2(canvas[0], canvas[1]);
}
@ -168,7 +172,7 @@ void OS_JavaScript::set_window_maximized(bool p_enabled) {
strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
strategy.canvasResizedCallback = NULL;
emscripten_enter_soft_fullscreen(GODOT_CANVAS_SELECTOR, &strategy);
emscripten_enter_soft_fullscreen(canvas_id.utf8().get_data(), &strategy);
window_maximized = p_enabled;
}
}
@ -197,7 +201,7 @@ void OS_JavaScript::set_window_fullscreen(bool p_enabled) {
strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
strategy.canvasResizedCallback = NULL;
EMSCRIPTEN_RESULT result = emscripten_request_fullscreen_strategy(GODOT_CANVAS_SELECTOR, false, &strategy);
EMSCRIPTEN_RESULT result = emscripten_request_fullscreen_strategy(canvas_id.utf8().get_data(), false, &strategy);
ERR_FAIL_COND_MSG(result == EMSCRIPTEN_RESULT_FAILED_NOT_DEFERRED, "Enabling fullscreen is only possible from an input callback for the HTML5 platform.");
ERR_FAIL_COND_MSG(result != EMSCRIPTEN_RESULT_SUCCESS, "Enabling fullscreen is only possible from an input callback for the HTML5 platform.");
// Not fullscreen yet, so prevent "windowed" canvas dimensions from
@ -434,8 +438,8 @@ static const char *godot2dom_cursor(OS::CursorShape p_shape) {
static void set_css_cursor(const char *p_cursor) {
/* clang-format off */
EM_ASM_({
Module.canvas.style.cursor = UTF8ToString($0);
EM_ASM({
Module['canvas'].style.cursor = UTF8ToString($0);
}, p_cursor);
/* clang-format on */
}
@ -444,7 +448,7 @@ static bool is_css_cursor_hidden() {
/* clang-format off */
return EM_ASM_INT({
return Module.canvas.style.cursor === 'none';
return Module['canvas'].style.cursor === 'none';
});
/* clang-format on */
}
@ -697,9 +701,9 @@ EM_BOOL OS_JavaScript::wheel_callback(int p_event_type, const EmscriptenWheelEve
bool OS_JavaScript::has_touchscreen_ui_hint() const {
/* clang-format off */
return EM_ASM_INT_V(
return EM_ASM_INT({
return 'ontouchstart' in window;
);
});
/* clang-format on */
}
@ -902,6 +906,7 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
emscripten_webgl_init_context_attributes(&attributes);
attributes.alpha = GLOBAL_GET("display/window/per_pixel_transparency/allowed");
attributes.antialias = false;
attributes.explicitSwapControl = true;
ERR_FAIL_INDEX_V(p_video_driver, VIDEO_DRIVER_MAX, ERR_INVALID_PARAMETER);
if (p_desired.layered) {
@ -945,8 +950,8 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
}
}
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE ctx = emscripten_webgl_create_context(GODOT_CANVAS_SELECTOR, &attributes);
if (emscripten_webgl_make_context_current(ctx) != EMSCRIPTEN_RESULT_SUCCESS) {
webgl_ctx = emscripten_webgl_create_context(canvas_id.utf8().get_data(), &attributes);
if (emscripten_webgl_make_context_current(webgl_ctx) != EMSCRIPTEN_RESULT_SUCCESS) {
gl_initialization_error = true;
}
@ -968,6 +973,7 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
if (p_desired.fullscreen) {
/* clang-format off */
EM_ASM({
const canvas = Module['canvas'];
(canvas.requestFullscreen || canvas.msRequestFullscreen ||
canvas.mozRequestFullScreen || canvas.mozRequestFullscreen ||
canvas.webkitRequestFullscreen
@ -976,26 +982,22 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
/* clang-format on */
}
/* clang-format off */
if (EM_ASM_INT_V({ return Module.resizeCanvasOnStart })) {
if (EM_ASM_INT({ return Module['resizeCanvasOnStart'] })) {
/* clang-format on */
set_window_size(Size2(video_mode.width, video_mode.height));
} else {
set_window_size(get_window_size());
}
char locale_ptr[16];
/* clang-format off */
EM_ASM_ARGS({
stringToUTF8(Module.locale, $0, 16);
}, locale_ptr);
/* clang-format on */
setenv("LANG", locale_ptr, true);
AudioDriverManager::initialize(p_audio_driver);
VisualServer *visual_server = memnew(VisualServerRaster());
visual_server = memnew(VisualServerRaster());
#ifndef NO_THREADS
visual_server = memnew(VisualServerWrapMT(visual_server, false));
#endif
input = memnew(InputDefault);
EMSCRIPTEN_RESULT result;
CharString id = canvas_id.utf8().get_data();
#define EM_CHECK(ev) \
if (result != EMSCRIPTEN_RESULT_SUCCESS) \
ERR_PRINTS("Error while setting " #ev " callback: Code " + itos(result))
@ -1009,16 +1011,16 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
// JavaScript APIs. For APIs that are not (sufficiently) exposed, EM_ASM
// is used below.
SET_EM_CALLBACK(EMSCRIPTEN_EVENT_TARGET_WINDOW, mousemove, mousemove_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, mousedown, mouse_button_callback)
SET_EM_CALLBACK(id.get_data(), mousedown, mouse_button_callback)
SET_EM_CALLBACK(EMSCRIPTEN_EVENT_TARGET_WINDOW, mouseup, mouse_button_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, wheel, wheel_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, touchstart, touch_press_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, touchmove, touchmove_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, touchend, touch_press_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, touchcancel, touch_press_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, keydown, keydown_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, keypress, keypress_callback)
SET_EM_CALLBACK(GODOT_CANVAS_SELECTOR, keyup, keyup_callback)
SET_EM_CALLBACK(id.get_data(), wheel, wheel_callback)
SET_EM_CALLBACK(id.get_data(), touchstart, touch_press_callback)
SET_EM_CALLBACK(id.get_data(), touchmove, touchmove_callback)
SET_EM_CALLBACK(id.get_data(), touchend, touch_press_callback)
SET_EM_CALLBACK(id.get_data(), touchcancel, touch_press_callback)
SET_EM_CALLBACK(id.get_data(), keydown, keydown_callback)
SET_EM_CALLBACK(id.get_data(), keypress, keypress_callback)
SET_EM_CALLBACK(id.get_data(), keyup, keyup_callback)
SET_EM_CALLBACK(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, fullscreenchange, fullscreen_change_callback)
SET_EM_CALLBACK_NOTARGET(gamepadconnected, gamepad_change_callback)
SET_EM_CALLBACK_NOTARGET(gamepaddisconnected, gamepad_change_callback)
@ -1027,22 +1029,39 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
#undef EM_CHECK
/* clang-format off */
EM_ASM_ARGS({
EM_ASM({
Module.listeners = {};
const canvas = Module['canvas'];
const send_notification = cwrap('send_notification', null, ['number']);
const notifications = arguments;
(['mouseover', 'mouseleave', 'focus', 'blur']).forEach(function(event, index) {
Module.canvas.addEventListener(event, send_notification.bind(null, notifications[index]));
Module.listeners[event] = send_notification.bind(null, notifications[index]);
canvas.addEventListener(event, Module.listeners[event]);
});
// Clipboard
const update_clipboard = cwrap('update_clipboard', null, ['string']);
window.addEventListener('paste', function(evt) {
Module.listeners['paste'] = function(evt) {
update_clipboard(evt.clipboardData.getData('text'));
}, true);
};
window.addEventListener('paste', Module.listeners['paste'], true);
Module.listeners['dragover'] = function(ev) {
// Prevent default behavior (which would try to open the file(s))
ev.preventDefault();
};
// Drag an drop
Module.listeners['drop'] = Module.drop_handler; // Defined in native/utils.js
canvas.addEventListener('dragover', Module.listeners['dragover'], false);
canvas.addEventListener('drop', Module.listeners['drop'], false);
// Quit request
Module['request_quit'] = function() {
send_notification(notifications[notifications.length - 1]);
};
},
MainLoop::NOTIFICATION_WM_MOUSE_ENTER,
MainLoop::NOTIFICATION_WM_MOUSE_EXIT,
MainLoop::NOTIFICATION_WM_FOCUS_IN,
MainLoop::NOTIFICATION_WM_FOCUS_OUT
MainLoop::NOTIFICATION_WM_FOCUS_OUT,
MainLoop::NOTIFICATION_WM_QUIT_REQUEST
);
/* clang-format on */
@ -1051,6 +1070,10 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
return OK;
}
void OS_JavaScript::swap_buffers() {
emscripten_webgl_commit_frame();
}
void OS_JavaScript::set_main_loop(MainLoop *p_main_loop) {
main_loop = p_main_loop;
@ -1062,17 +1085,6 @@ MainLoop *OS_JavaScript::get_main_loop() const {
return main_loop;
}
void OS_JavaScript::run_async() {
main_loop->init();
emscripten_set_main_loop(main_loop_callback, -1, false);
}
void OS_JavaScript::main_loop_callback() {
get_singleton()->main_loop_iterate();
}
bool OS_JavaScript::main_loop_iterate() {
if (is_userfs_persistent() && sync_wait_time >= 0) {
@ -1103,15 +1115,16 @@ bool OS_JavaScript::main_loop_iterate() {
strategy.canvasResolutionScaleMode = EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_STDDEF;
strategy.filteringMode = EMSCRIPTEN_FULLSCREEN_FILTERING_DEFAULT;
strategy.canvasResizedCallback = NULL;
emscripten_enter_soft_fullscreen(GODOT_CANVAS_SELECTOR, &strategy);
emscripten_enter_soft_fullscreen(canvas_id.utf8().get_data(), &strategy);
} else {
emscripten_set_canvas_element_size(GODOT_CANVAS_SELECTOR, windowed_size.width, windowed_size.height);
emscripten_set_canvas_element_size(canvas_id.utf8().get_data(), windowed_size.width, windowed_size.height);
}
emscripten_set_canvas_element_size(canvas_id.utf8().get_data(), windowed_size.width, windowed_size.height);
just_exited_fullscreen = false;
}
int canvas[2];
emscripten_get_canvas_element_size(GODOT_CANVAS_SELECTOR, canvas, canvas + 1);
emscripten_get_canvas_element_size(canvas_id.utf8().get_data(), canvas, canvas + 1);
video_mode.width = canvas[0];
video_mode.height = canvas[1];
if (!window_maximized && !video_mode.fullscreen && !just_exited_fullscreen && !entering_fullscreen) {
@ -1127,16 +1140,51 @@ void OS_JavaScript::delete_main_loop() {
memdelete(main_loop);
}
void OS_JavaScript::finalize_async() {
EM_ASM({
Object.entries(Module.listeners).forEach(function(kv) {
if (kv[0] == 'paste') {
window.removeEventListener(kv[0], kv[1], true);
} else {
Module['canvas'].removeEventListener(kv[0], kv[1]);
}
});
Module.listeners = {};
});
audio_driver_javascript.finish_async();
}
void OS_JavaScript::finalize() {
memdelete(input);
visual_server->finish();
emscripten_webgl_commit_frame();
memdelete(visual_server);
emscripten_webgl_destroy_context(webgl_ctx);
}
// Miscellaneous
Error OS_JavaScript::execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex) {
ERR_FAIL_V_MSG(ERR_UNAVAILABLE, "OS::execute() is not available on the HTML5 platform.");
Array args;
for (const List<String>::Element *E = p_arguments.front(); E; E = E->next()) {
args.push_back(E->get());
}
String json_args = JSON::print(args);
/* clang-format off */
int failed = EM_ASM_INT({
const json_args = UTF8ToString($0);
const args = JSON.parse(json_args);
if (Module["onExecute"]) {
Module["onExecute"](args);
return 0;
}
return 1;
}, json_args.utf8().get_data());
/* clang-format on */
ERR_FAIL_COND_V_MSG(failed, ERR_UNAVAILABLE, "OS::execute() must be implemented in Javascript via 'engine.setOnExecute' if required.");
return OK;
}
Error OS_JavaScript::kill(const ProcessID &p_pid) {
@ -1154,7 +1202,9 @@ extern "C" EMSCRIPTEN_KEEPALIVE void send_notification(int p_notification) {
if (p_notification == MainLoop::NOTIFICATION_WM_MOUSE_ENTER || p_notification == MainLoop::NOTIFICATION_WM_MOUSE_EXIT) {
cursor_inside_canvas = p_notification == MainLoop::NOTIFICATION_WM_MOUSE_ENTER;
}
OS_JavaScript::get_singleton()->get_main_loop()->notification(p_notification);
MainLoop *loop = OS_JavaScript::get_singleton()->get_main_loop();
if (loop)
loop->notification(p_notification);
}
bool OS_JavaScript::_check_internal_feature_support(const String &p_feature) {
@ -1173,7 +1223,7 @@ bool OS_JavaScript::_check_internal_feature_support(const String &p_feature) {
void OS_JavaScript::alert(const String &p_alert, const String &p_title) {
/* clang-format off */
EM_ASM_({
EM_ASM({
window.alert(UTF8ToString($0));
}, p_alert.utf8().get_data());
/* clang-format on */
@ -1182,7 +1232,7 @@ void OS_JavaScript::alert(const String &p_alert, const String &p_title) {
void OS_JavaScript::set_window_title(const String &p_title) {
/* clang-format off */
EM_ASM_({
EM_ASM({
document.title = UTF8ToString($0);
}, p_title.utf8().get_data());
/* clang-format on */
@ -1221,7 +1271,7 @@ void OS_JavaScript::set_icon(const Ref<Image> &p_icon) {
r = png.read();
/* clang-format off */
EM_ASM_ARGS({
EM_ASM({
var PNG_PTR = $0;
var PNG_LEN = $1;
@ -1248,7 +1298,7 @@ Error OS_JavaScript::shell_open(String p_uri) {
// Open URI in a new tab, browser will deal with it by protocol.
/* clang-format off */
EM_ASM_({
EM_ASM({
window.open(UTF8ToString($0), '_blank');
}, p_uri.utf8().get_data());
/* clang-format on */
@ -1270,26 +1320,36 @@ String OS_JavaScript::get_user_data_dir() const {
return "/userfs";
};
String OS_JavaScript::get_resource_dir() const {
String OS_JavaScript::get_cache_path() const {
return "/";
return "/home/web_user/.cache";
}
String OS_JavaScript::get_config_path() const {
return "/home/web_user/.config";
}
String OS_JavaScript::get_data_path() const {
return "/home/web_user/.local/share";
}
OS::PowerState OS_JavaScript::get_power_state() {
WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to POWERSTATE_UNKNOWN");
WARN_PRINT_ONCE("Power management is not supported for the HTML5 platform, defaulting to POWERSTATE_UNKNOWN");
return OS::POWERSTATE_UNKNOWN;
}
int OS_JavaScript::get_power_seconds_left() {
WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
WARN_PRINT_ONCE("Power management is not supported for the HTML5 platform, defaulting to -1");
return -1;
}
int OS_JavaScript::get_power_percent_left() {
WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
WARN_PRINT_ONCE("Power management is not supported for the HTML5 platform, defaulting to -1");
return -1;
}
@ -1336,6 +1396,7 @@ OS_JavaScript::OS_JavaScript(int p_argc, char *p_argv[]) {
transparency_enabled = false;
main_loop = NULL;
visual_server = NULL;
idb_available = false;
sync_wait_time = -1;

14
platform/javascript/os_javascript.h
View File

@ -48,6 +48,8 @@ class OS_JavaScript : public OS_Unix {
bool just_exited_fullscreen;
bool transparency_enabled;
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE webgl_ctx;
InputDefault *input;
Ref<InputEventKey> deferred_key_event;
CursorShape cursor_shape;
@ -62,6 +64,7 @@ class OS_JavaScript : public OS_Unix {
MainLoop *main_loop;
int video_driver_index;
AudioDriverJavaScript audio_driver_javascript;
VisualServer *visual_server;
bool idb_available;
int64_t sync_wait_time;
@ -84,8 +87,6 @@ class OS_JavaScript : public OS_Unix {
static EM_BOOL gamepad_change_callback(int p_event_type, const EmscriptenGamepadEvent *p_event, void *p_user_data);
void process_joypads();
static void main_loop_callback();
static void file_access_close_callback(const String &p_file, int p_flags);
protected:
@ -102,9 +103,13 @@ protected:
virtual bool _check_internal_feature_support(const String &p_feature);
public:
String canvas_id;
void finalize_async();
// Override return type to make writing static callbacks less tedious.
static OS_JavaScript *get_singleton();
virtual void swap_buffers();
virtual void set_video_mode(const VideoMode &p_video_mode, int p_screen = 0);
virtual VideoMode get_video_mode(int p_screen = 0) const;
virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const;
@ -142,7 +147,6 @@ public:
virtual String get_clipboard() const;
virtual MainLoop *get_main_loop() const;
void run_async();
bool main_loop_iterate();
virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking = true, ProcessID *r_child_id = NULL, String *r_pipe = NULL, int *r_exitcode = NULL, bool read_stderr = false, Mutex *p_pipe_mutex = NULL);
@ -157,7 +161,9 @@ public:
virtual String get_name() const;
virtual bool can_draw() const;
virtual String get_resource_dir() const;
virtual String get_cache_path() const;
virtual String get_config_path() const;
virtual String get_data_path() const;
virtual String get_user_data_dir() const;
virtual OS::PowerState get_power_state();

5
platform/javascript/pre.js
View File

@ -1,5 +0,0 @@
var Engine = {
RuntimeEnvironment: function(Module, exposedLibs) {
// The above is concatenated with generated code, and acts as the start of
// a wrapper for said code. See engine.js for the other part of the
// wrapper.