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Add: support for emscripten (play-OpenTTD-in-the-browser)

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Emscripten compiles to WASM, which can be loaded via
HTML / JavaScript. This allows you to play OpenTTD inside a
browser.

Co-authored-by: milek7 <me@milek7.pl>
This commit is contained in:
Patric Stout
2020-12-05 21:57:47 +01:00
committed by Patric Stout
parent 2da07f7615
commit d15dc9f40f
25 changed files with 844 additions and 12 deletions
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17
src/network/network_gui.cpp
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@@ -39,6 +39,9 @@
#include "../safeguards.h"
#ifdef __EMSCRIPTEN__
# include <emscripten.h>
#endif
static void ShowNetworkStartServerWindow();
static void ShowNetworkLobbyWindow(NetworkGameList *ngl);
@@ -475,6 +478,14 @@ public:
this->filter_editbox.cancel_button = QueryString::ACTION_CLEAR;
this->SetFocusedWidget(WID_NG_FILTER);
/* As the master-server doesn't support "websocket" servers yet, we
* let "os/emscripten/pre.js" hardcode a list of servers people can
* join. This means the serverlist is curated for now, but it is the
* best we can offer. */
#ifdef __EMSCRIPTEN__
EM_ASM(if (window["openttd_server_list"]) openttd_server_list());
#endif
this->last_joined = NetworkGameListAddItem(NetworkAddress(_settings_client.network.last_host, _settings_client.network.last_port));
this->server = this->last_joined;
if (this->last_joined != nullptr) NetworkUDPQueryServer(this->last_joined->address);
@@ -615,6 +626,12 @@ public:
this->GetWidget<NWidgetStacked>(WID_NG_NEWGRF_SEL)->SetDisplayedPlane(sel == nullptr || !sel->online || sel->info.grfconfig == nullptr);
this->GetWidget<NWidgetStacked>(WID_NG_NEWGRF_MISSING_SEL)->SetDisplayedPlane(sel == nullptr || !sel->online || sel->info.grfconfig == nullptr || !sel->info.version_compatible || sel->info.compatible);
#ifdef __EMSCRIPTEN__
this->SetWidgetDisabledState(WID_NG_FIND, true);
this->SetWidgetDisabledState(WID_NG_ADD, true);
this->SetWidgetDisabledState(WID_NG_START, true);
#endif
this->DrawWidgets();
}