Move network code into its own dusknetwork module, gate behind DUSK_NETWORK

Splits the platform-agnostic network core out of dusk into a top-level
dusknetwork module, mirroring the duskgl/dusksdl2 pattern. Adds a
DUSK_NETWORK cmake option (default ON) so builds can exclude all
networking code, including the per-platform implementations.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CMakeLists.txt

@@ -13,6 +13,7 @@ cmake_policy(SET CMP0079 NEW)
 # set(FETCHCONTENT_UPDATES_DISCONNECTED ON)
 
 option(DUSK_BUILD_TESTS "Enable tests" OFF)
+option(DUSK_NETWORK "Enable network support" ON)
 
 set(DUSK_GAME_NAME "Dusk" CACHE STRING "Game display name")
 set(DUSK_GAME_AUTHOR "YourWishes" CACHE STRING "Game author / coder")
@@ -90,6 +91,12 @@ target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME}
     DUSK_VERSION="${DUSK_VERSION}"
 )
 
+if(DUSK_NETWORK)
+  target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
+    DUSK_NETWORK
+  )
+endif()
+
 # Toolchains
 include(cmake/targets/${DUSK_TARGET_SYSTEM}.cmake)
 

src/CMakeLists.txt

@@ -5,6 +5,10 @@
 
 add_subdirectory(dusk)
 
+if(DUSK_NETWORK)
+  add_subdirectory(dusknetwork)
+endif()
+
 if(DUSK_TARGET_SYSTEM STREQUAL "linux" OR DUSK_TARGET_SYSTEM STREQUAL "knulli")
   add_subdirectory(dusklinux)
   add_subdirectory(dusksdl2)

src/dusk/CMakeLists.txt

@@ -68,7 +68,6 @@ add_subdirectory(scene)
 add_subdirectory(system)
 add_subdirectory(time)
 add_subdirectory(ui)
-add_subdirectory(network)
 add_subdirectory(save)
 add_subdirectory(util)
 add_subdirectory(thread)

src/dusk/engine/engine.c

@@ -16,7 +16,9 @@
 #include "asset/asset.h"
 #include "ui/ui.h"
 #include "assert/assert.h"
-#include "network/network.h"
+#ifdef DUSK_NETWORK
+  #include "network/network.h"
+#endif
 #include "system/system.h"
 #include "console/console.h"
 #include "save/save.h"
@@ -43,7 +45,9 @@ errorret_t engineInit(const int32_t argc, const char_t **argv) {
   errorChain(displayInit());
   errorChain(uiInit());
   errorChain(rpgInit());
+  #ifdef DUSK_NETWORK
     errorChain(networkInit());
+  #endif
   errorChain(sceneInit());
 
   consolePrint("Engine initialized");
@@ -61,7 +65,9 @@ errorret_t engineInit(const int32_t argc, const char_t **argv) {
 
 errorret_t engineUpdate(void) {
   // Order here is important.
+  #ifdef DUSK_NETWORK
     errorChain(networkUpdate());
+  #endif
   errorChain(saveUpdate());
   autoSaveUpdate();
   timeUpdate();
@@ -84,7 +90,9 @@ void engineExit(void) {
 
 errorret_t engineDispose(void) {
   errorChain(sceneDispose());
+  #ifdef DUSK_NETWORK
     errorChain(networkDispose());
+  #endif
   errorChain(rpgDispose());
   localeManagerDispose();
   errorChain(uiDispose());

src/duskdolphin/CMakeLists.txt

@@ -19,7 +19,9 @@ add_subdirectory(asset)
 add_subdirectory(log)
 add_subdirectory(display)
 add_subdirectory(input)
-add_subdirectory(network)
+if(DUSK_NETWORK)
+  add_subdirectory(network)
+endif()
 add_subdirectory(save)
 add_subdirectory(system)
 add_subdirectory(time)

src/dusklinux/CMakeLists.txt

@@ -13,7 +13,9 @@ target_include_directories(${DUSK_LIBRARY_TARGET_NAME}
 add_subdirectory(asset)
 add_subdirectory(log)
 add_subdirectory(input)
-add_subdirectory(network)
+if(DUSK_NETWORK)
+  add_subdirectory(network)
+endif()
 add_subdirectory(save)
 add_subdirectory(system)
 add_subdirectory(time)

src/dusknetwork/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (c) 2026 Dominic Masters
+#
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Includes
+target_include_directories(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+
+# Subdirs
+add_subdirectory(network)

src/duskpsp/CMakeLists.txt

@@ -18,7 +18,9 @@ target_sources(${DUSK_BINARY_TARGET_NAME}
 add_subdirectory(asset)
 add_subdirectory(input)
 add_subdirectory(log)
-add_subdirectory(network)
+if(DUSK_NETWORK)
+  add_subdirectory(network)
+endif()
 add_subdirectory(save)
 add_subdirectory(system)
 add_subdirectory(time)