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HTML5 start-up overhaul

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- Implement promise-based JS interface for custom HTML page
   integration
 - Add download progress callback
 - Add progress bar and indeterminate spinner to default HTML page
 - Try downloading files multiple times when failing
 - Get rid of godotfs.js
 - Separate steps for engine initialization, game initialization and game
   start
 - Allow multiple games on one HTML page
 - Substitution placeholders only used in .html file
 - Placeholders renamed: $GODOT_BASE => $GODOT_BASENAME,
   $GODOT_TMEM -> $GODOT_TOTAL_MEMORY
 - Emscripten Module is now Engine.RuntimeEnvironment (no longer a global)
This commit is contained in:
Leon Krause
2017-08-13 13:10:04 +02:00
parent b4ad899ef6
commit 4db801aaea
9 changed files with 778 additions and 543 deletions
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33
platform/javascript/SCsub
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@@ -20,33 +20,32 @@ for x in javascript_files:
javascript_objects.append(env_javascript.Object(x))
env.Append(LINKFLAGS=["-s", "EXPORTED_FUNCTIONS=\"['_main','_audio_server_mix_function','_main_after_fs_sync','_send_notification']\""])
env.Append(LINKFLAGS=["--shell-file", '"platform/javascript/godot_shell.html"'])
# output file name without file extension
basename = "godot" + env["PROGSUFFIX"]
target_dir = env.Dir("#bin")
js_file = target_dir.File(basename + ".js")
implicit_targets = [js_file]
zip_dir = target_dir.Dir('.javascript_zip')
zip_files = env.InstallAs([zip_dir.File("godot.js"), zip_dir.File("godotfs.js")], [js_file, "#misc/dist/html_fs/godotfs.js"])
zip_files = env.InstallAs(zip_dir.File('godot.html'), '#misc/dist/html/default.html')
implicit_targets = []
if env['wasm'] == 'yes':
wasm_file = target_dir.File(basename+'.wasm')
implicit_targets.append(wasm_file)
zip_files.append(InstallAs(zip_dir.File('godot.wasm'), wasm_file))
wasm = target_dir.File(basename + '.wasm')
implicit_targets.append(wasm)
zip_files.append(InstallAs(zip_dir.File('godot.wasm'), wasm))
prejs = env.File('pre_wasm.js')
else:
asmjs_files = [target_dir.File(basename+'.asm.js'), target_dir.File(basename+'.html.mem')]
zip_files.append(InstallAs([zip_dir.File('godot.asm.js'), zip_dir.File('godot.mem')], asmjs_files))
asmjs_files = [target_dir.File(basename + '.asm.js'), target_dir.File(basename + '.js.mem')]
implicit_targets.extend(asmjs_files)
zip_files.append(InstallAs([zip_dir.File('godot.asm.js'), zip_dir.File('godot.mem')], asmjs_files))
prejs = env.File('pre_asmjs.js')
# HTML file must be the first target in the list
html_file = env.Program(["#bin/godot"] + implicit_targets, javascript_objects, PROGSUFFIX=env["PROGSUFFIX"]+".html")[0]
Depends(html_file, "godot_shell.html")
js = env.Program(['#bin/godot'] + implicit_targets, javascript_objects, PROGSUFFIX=env['PROGSUFFIX'] + '.js')[0];
zip_files.append(InstallAs(zip_dir.File('godot.js'), js))
# Emscripten hardcodes file names, so replace common base name with
# placeholder while leaving extension; also change `.html.mem` to just `.mem`
fixup_html = env.Substfile(html_file, SUBST_DICT=[(basename, '$$GODOT_BASE'), ('.html.mem', '.mem')], SUBSTFILESUFFIX='.fixup.html')
postjs = env.File('engine.js')
env.Depends(js, [prejs, postjs])
env.Append(LINKFLAGS=['--pre-js', prejs.path])
env.Append(LINKFLAGS=['--post-js', postjs.path])
zip_files.append(InstallAs(zip_dir.File('godot.html'), fixup_html))
Zip('#bin/godot', zip_files, ZIPSUFFIX=env['PROGSUFFIX']+env['ZIPSUFFIX'], ZIPROOT=zip_dir, ZIPCOMSTR="Archving $SOURCES as $TARGET")
Zip('#bin/godot', zip_files, ZIPSUFFIX=env['PROGSUFFIX'] + env['ZIPSUFFIX'], ZIPROOT=zip_dir, ZIPCOMSTR="Archving $SOURCES as $TARGET")