i'm stupid

forgot to enabel some stuff

Minecraft.Client/Network/MultiPlayerChunkCache.cpp

@@ -10,6 +10,11 @@
 #include "../../Minecraft.World/Blocks/Tile.h"
 #include "../../Minecraft.World/Level/WaterLevelChunk.h"
 
+#if defined(__EMSCRIPTEN__)
+// eh... I should've enabled wasm64
+#define InterlockedCompareExchangeRelease InterlockedCompareExchangeRelease64
+#endif
+
 MultiPlayerChunkCache::MultiPlayerChunkCache(Level* level) {
     XZSIZE = level->dimension->getXZSize();  // 4J Added
     XZOFFSET = XZSIZE / 2;                   // 4J Added

Minecraft.Client/Platform/Common/Audio/SoundEngine.cpp

@@ -31,7 +31,11 @@ int strcasecmp(const char* a, const char* b) {
     return ca - cb;
 }
 #define MINIAUDIO_IMPLEMENTATION
+#ifndef __EMSCRIPTEN__
 #include "miniaudio.h"
+#else
+#include "../../Emscripten/miniaudio.h"
+#endif // __EMSCRIPTEN__
 #undef STB_VORBIS_HEADER_ONLY
 #include "stb_vorbis.c"
 #endif

Minecraft.Client/Platform/Common/Audio/SoundEngine.h

@@ -3,7 +3,11 @@ class Mob;
 class Options;
 using namespace std;
 #include "../../Minecraft.World/Util/SoundTypes.h"
+#ifndef __EMSCRIPTEN__
 #include "./miniaudio.h"
+#else
+#include "../../Emscripten/miniaudio.h"
+#endif
 constexpr float SFX_3D_MIN_DISTANCE = 1.0f;
 constexpr float SFX_3D_MAX_DISTANCE = 16.0f;
 constexpr float SFX_3D_ROLLOFF = 0.5f;

Minecraft.Client/Platform/Linux/Stubs/DirectXMath/DirectXMath.h

@@ -99,6 +99,8 @@
 #elif defined(_M_ARM) || defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || \
     defined(_M_ARM64EC) || __arm__ || __aarch64__
 #define _XM_ARM_NEON_INTRINSICS_
+#elif defined(__EMSCRIPTEN__)
+#define _XM_NO_INTRINSICS_
 #elif !defined(_XM_NO_INTRINSICS_)
 #error DirectX Math does not support this target
 #endif

Minecraft.Client/Platform/Linux/Stubs/LinuxStubs.h

@@ -23,7 +23,9 @@
 #include <stdio.h>
 #include <sys/time.h>
 #include <locale>
+#ifndef __EMSCRIPTEN__
 #include <linux/mman.h>
+#endif // __EMSCRIPTEN__
 #include <sys/mman.h>
 #include <codecvt>
 

Minecraft.Client/meson.build

@@ -46,7 +46,7 @@ platform_sources += run_command(
 ).stdout().strip().split('\n')
 
 # linux-specific files (everything in Platform/Linux)
-if host_machine.system() == 'linux'
+if host_machine.system() == 'linux' or host_machine.system() == 'emscripten'
   platform_sources += run_command(
     'sh', '-c',
     'find "'
@@ -56,6 +56,15 @@ if host_machine.system() == 'linux'
   ).stdout().strip().split('\n')
 endif
 
+is_emscripten = host_machine.system() == 'emscripten'
+emcc_link_args = []
+
+if is_emscripten
+    emcc_link_args += ['--preload-file', meson.global_source_root() + '/build/Minecraft.Client/Common@Common']
+    emcc_link_args += ['--shell-file', meson.global_source_root() + '/scripts/shell.html']
+    emcc_link_args += ['-o 4JCraft.html']
+endif
+
 client_dependencies = [
     render_dep,
     input_dep,
@@ -67,7 +76,7 @@ client_dependencies = [
     glu_dep,
     thread_dep,
     thread_dep,
-    dependency('zlib'),
+    zlib_dep,
     miniaudio_dep
 ]
 
@@ -101,6 +110,7 @@ client = executable('Minecraft.Client',
     '-DUNICODE', '-D_UNICODE',
     '-include', meson.current_source_dir() / 'Platform/stdafx.h',
   ],
+  link_args: emcc_link_args,
   c_args   : global_cpp_defs + ['-DUNICODE', '-D_UNICODE'],
   install  : true,
   install_dir : ''

Minecraft.World/Util/Hasher.cpp

@@ -1,14 +1,16 @@
 #include "../Platform/stdafx.h"
-#if defined(_WIN32)
-#include <xhash>
-#else
-#include <openssl/md5.h>
 #include <iostream>
 #include <iomanip>
 #include <sstream>
+#if defined(_WIN32)
+#include <xhash>
+#elif defined (__EMSCRIPTEN__)
+// no.
+#else
+#include <openssl/md5.h>
+#include <openssl/evp.h>
 #endif  // _WIN32
 #include "Hasher.h"
-#include <openssl/evp.h>
 
 Hasher::Hasher(std::wstring& salt) { this->salt = salt; }
 
@@ -29,6 +31,9 @@ std::wstring Hasher::getHash(std::wstring& name) {
     //{
     //	throw new RuntimeException(e);
     //}
+#elif defined(__EMSCRIPTEN__)
+    std::wstring s = std::wstring(salt).append(name);
+    return s;
 #else
     // adapted from a SSL example
     std::wstring combined = salt + name;

Minecraft.World/meson.build

@@ -46,8 +46,12 @@ lib_world = static_library('Minecraft.World',
   ],
 )
 
-zlib_dep = dependency('zlib')
+is_emscripten = host_machine.system() == 'emscripten'
-crypto_dep = dependency('libcrypto')  # for MD5 in Hasher.cpp on Linux
+if is_emscripten
+    crypto_dep = declare_dependency()
+else
+    crypto_dep = dependency('libcrypto')  # for MD5 in Hasher.cpp on Linux
+endif
 
 world_dep = declare_dependency(
   link_with : lib_world,

meson.build

@@ -17,13 +17,26 @@ python = pymod.find_installation('python3', required: true)
 cc = meson.get_compiler('cpp')
 
 # system deps
-gl_dep     = dependency('gl')
+if host_machine.system() == 'emscripten'
-glu_dep    = dependency('glu')
+    # These are handled in Emscripten via -sUSE_<whatever>
-sdl2_dep   = dependency('sdl2') # Yes.. i know sdl3 is out, but there's not point upgrading right now except when
+    gl_dep  = declare_dependency()
+    glu_dep = declare_dependency()
+    sdl2_dep = declare_dependency()
+    thread_dep = declare_dependency()
+    zlib_dep   = declare_dependency()
+    miniaudio_dep = declare_dependency()
+else
+    gl_dep  = dependency('gl')
+    glu_dep = dependency('glu')
+    sdl2_dep   = dependency('sdl2') # Yes.. i know sdl3 is out, but there's not point upgrading right now except when
                                 # someone is gonna ask me "Hey juicey can you make it SDL3?" and i'd be like fuck you and still do it.
-thread_dep = dependency('threads')
+    thread_dep = dependency('threads')
-miniaudio_dep = dependency('miniaudio')
+    zlib_dep = dependency('zlib')
+    miniaudio_dep = dependency('miniaudio')
+endif
+
 stb = subproject('stb').get_variable('stb_inc')
+
 # compile flags (chagne ts juicey)
 global_cpp_args = [
   '-fpermissive',
@@ -31,6 +44,29 @@ global_cpp_args = [
   '-pipe',             # use pipes instead of temp files between compiler stages
 ]
 
+if host_machine.system() == 'emscripten'
+  add_project_arguments(
+    '-pthread',
+    '--use-port=zlib',
+    '-sUSE_SDL=2',
+    '--use-port=sdl2',
+    language: 'cpp'
+  )
+
+  add_project_link_arguments(
+    '-sUSE_SDL=2',
+    '-sUSE_WEBGL2=1',
+    '-sLEGACY_GL_EMULATION=1',
+    '-sALLOW_MEMORY_GROWTH=1',
+    '-sPTHREAD_POOL_SIZE=4',
+    '-sERROR_ON_UNDEFINED_SYMBOLS=0',
+    '-sASSERTIONS=0',
+    '--use-port=zlib',
+    '--use-port=sdl2',
+    language: 'cpp'
+  )
+endif
+
 # global ccp defs type shi
 global_cpp_defs = [
   '-DSPLIT_SAVES',
@@ -41,7 +77,8 @@ global_cpp_defs = [
   '-DDEBUG',
 ]
 
-if host_machine.system() == 'linux'
+# DecalOverdose: yes i know it's bad to do this but I don't know a better way to do this.
+if host_machine.system() == 'linux' or host_machine.system() == 'emscripten'
   global_cpp_defs += [
     '-Dlinux',
     '-D__linux',

scripts/emscripten_native.txt

@@ -0,0 +1,15 @@
+[binaries]
+c = 'emcc'
+cpp = 'em++'
+ar = 'emar'
+strip = 'emstrip'
+
+[built-in options]
+c_args = []
+c_link_args = []
+
+[host_machine]
+system = 'emscripten'
+cpu_family = 'wasm32'
+cpu = 'wasm32'
+endian = 'little'

scripts/shell.html

@@ -0,0 +1,115 @@
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <title>Emscripten-Generated Code</title>
+    <style>{{{ SHELL_CSS }}}</style>
+  </head>
+  <body>
+    <a href="http://emscripten.org">{{{ SHELL_LOGO }}}</a>
+
+    <div class="spinner" id='spinner'></div>
+    <div class="emscripten" id="status">Downloading...</div>
+
+    <span id='controls'>
+      <span><input type="checkbox" id="resize">Resize canvas</span>
+      <span><input type="checkbox" id="pointerLock" checked>Lock/hide mouse pointer &nbsp;&nbsp;&nbsp;</span>
+      <span><input type="button" value="Fullscreen" onclick="Module.requestFullscreen(document.getElementById('pointerLock').checked,
+                                                                                document.getElementById('resize').checked)">
+      </span>
+    </span>
+
+    <div class="emscripten">
+      <progress value="0" max="100" id="progress" hidden=1></progress>
+    </div>
+
+    <div class="emscripten_border">
+      <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()" tabindex=-1></canvas>
+    </div>
+    <textarea id="output" rows="8"></textarea>
+
+    <script type='text/javascript'>
+      var statusElement = document.getElementById('status');
+      var progressElement = document.getElementById('progress');
+      var spinnerElement = document.getElementById('spinner');
+      var canvasElement = document.getElementById('canvas');
+      var outputElement = document.getElementById('output');
+      if (outputElement) outputElement.value = ''; // clear browser cache
+
+      // As a default initial behavior, pop up an alert when webgl context is lost. To make your
+      // application robust, you may want to override this behavior before shipping!
+      // See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
+      canvasElement.addEventListener('webglcontextlost', (e) => {
+        alert('WebGL context lost. You will need to reload the page.');
+        e.preventDefault();
+      }, false);
+
+      var setStatus = (text) => {
+        if (!setStatus.last) setStatus.last = { time: Date.now(), text: '' };
+        if (text === setStatus.last.text) return;
+        var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
+        var now = Date.now();
+        // if this is a progress update, skip it if too soon
+        if (m && now - setStatus.last.time < 30) return;
+        setStatus.last.time = now;
+        setStatus.last.text = text;
+        if (m) {
+          text = m[1];
+          progressElement.value = parseInt(m[2])*100;
+          progressElement.max = parseInt(m[4])*100;
+          progressElement.hidden = false;
+          spinnerElement.hidden = false;
+        } else {
+          progressElement.value = null;
+          progressElement.max = null;
+          progressElement.hidden = true;
+          if (!text) spinnerElement.style.display = 'none';
+        }
+        statusElement.innerHTML = text;
+      };
+
+#if MODULARIZE && !EXPORT_ES6
+      var moduleArgs = {
+#else
+      var Module = {
+#endif
+        print(...args) {
+          console.log(...args);
+          // These replacements are necessary if you render to raw HTML
+          //text = text.replace(/&/g, "&amp;");
+          //text = text.replace(/</g, "&lt;");
+          //text = text.replace(/>/g, "&gt;");
+          //text = text.replace('\n', '<br>', 'g');
+          if (outputElement) {
+            var text = args.join(' ');
+            outputElement.value += text + "\n";
+            outputElement.scrollTop = outputElement.scrollHeight; // focus on bottom
+          }
+        },
+        canvas: canvasElement,
+        setStatus: setStatus,
+        totalDependencies: 0,
+        monitorRunDependencies(left) {
+          this.totalDependencies = Math.max(this.totalDependencies, left);
+          setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')' : 'All downloads complete.');
+        }
+      };
+      setStatus('Downloading...');
+      window.onerror = (event) => {
+        // TODO: do not warn on ok events like simulating an infinite loop or exitStatus
+        setStatus('Exception thrown, see JavaScript console');
+        spinnerElement.style.display = 'none';
+        setStatus = (text) => {
+          if (text) console.error('[post-exception status] ' + text);
+        };
+      };
+    </script>
+    {{{ SCRIPT }}}
+#if MODULARIZE && !EXPORT_ES6
+    <script type='text/javascript'>
+      {{{ EXPORT_NAME }}}(moduleArgs);
+    </script>
+#endif
+  </body>
+</html>