Import project skeleton from rts

https://gitea.privatedns.org/xavi/rts

24 files changed, 1487 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..55a7007
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,71 @@
+# wanix, a Unix-like operating system for WebAssembly
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# SDL::SDL was defined on 3.20.
+cmake_minimum_required(VERSION 3.20)
+
+set(TOOLS_PREFIX ${CMAKE_BINARY_DIR}/tools)
+include(ExternalProject)
+ExternalProject_Add(tools
+    SOURCE_DIR ${CMAKE_SOURCE_DIR}/tools
+    CMAKE_ARGS
+        -D CMAKE_INSTALL_PREFIX=${TOOLS_PREFIX})
+
+project(wanix C)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
+
+if(CMAKE_TOOLCHAIN_FILE MATCHES "ps1")
+    set(PS1_BUILD 1)
+elseif(CMAKE_TOOLCHAIN_FILE MATCHES "win9x")
+    set(WIN9X_BUILD 1)
+    set(SDL1_2_BUILD 1)
+    set(exec_flags WIN32)
+else()
+    set(HOST_BUILD 1)
+    set(SDL1_2_BUILD 1)
+endif()
+
+add_executable(${PROJECT_NAME} ${exec_flags} "src/main.c")
+
+if(SDL1_2_BUILD)
+    find_package(SDL 1.2 REQUIRED)
+    find_package(SDL_gfx 2.0 REQUIRED)
+    find_package(SDL_mixer 1.2 REQUIRED)
+    # FindSDL_mixer.cmake does not export any target, so do it here instead.
+    add_library(SDL::SDL_mixer STATIC IMPORTED)
+    set_property(TARGET SDL::SDL_mixer PROPERTY
+        IMPORTED_LOCATION ${SDL_MIXER_LIBRARIES})
+    target_include_directories(SDL::SDL_mixer INTERFACE ${SDL_MIXER_INCLUDE_DIRS})
+    target_link_libraries(SDL::SDL_mixer INTERFACE SDL::SDL)
+endif()
+
+if(NOT PS1_BUILD)
+    find_package(ENET 1.3 REQUIRED)
+endif()
+
+set(cdroot ${CMAKE_BINARY_DIR}/cdimg)
+file(MAKE_DIRECTORY ${cdroot})
+
+if(PS1_BUILD)
+    include("cmake/ps1.cmake")
+elseif(WIN9X_BUILD)
+    include("cmake/win9x.cmake")
+elseif(HOST_BUILD)
+    include("cmake/host.cmake")
+endif()
+
+add_subdirectory("res")
+add_subdirectory("src")
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..be3f7b2
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
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+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/cmake/FindENET.cmake b/cmake/FindENET.cmake
new file mode 100755
index 0000000..504aa23
--- /dev/null
+++ b/cmake/FindENET.cmake
@@ -0,0 +1,88 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindENET
+-----------
+
+Locate ENET library
+
+This module defines:
+
+::
+
+  ENET, the name of the target to use with target_*() commands
+  ENET_LIBRARIES, the name of the library to link against
+  ENET_INCLUDE_DIRS, where to find the headers
+  ENET_FOUND, if false, do not try to link against
+  ENET_VERSION_STRING - human-readable string containing the
+                             version of ENET
+
+$ENETDIR is an environment variable that would correspond to the
+./configure --prefix=$ENETDIR used in building ENET.
+#]=======================================================================]
+
+find_path(ENET_INCLUDE_DIRS
+  NAMES
+    enet/callbacks.h
+    enet/enet.h
+    enet/list.h
+    enet/protocol.h
+    enet/time.h
+    enet/types.h
+    enet/unix.h
+    enet/utility.h
+    enet/win32.h
+  HINTS
+    ENV ENETDIR
+  PATH_SUFFIXES
+    enet
+    # path suffixes to search inside ENV{ENETDIR}
+    include
+)
+
+if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+  set(VC_LIB_PATH_SUFFIX lib/x64)
+else()
+  set(VC_LIB_PATH_SUFFIX lib/x86)
+endif()
+
+find_library(ENET_LIBRARIES
+  NAMES enet
+  HINTS
+    ENV ENETDIR
+  PATH_SUFFIXES
+    lib
+    ${VC_LIB_PATH_SUFFIX}
+)
+
+if(ENET_INCLUDE_DIRS AND EXISTS "${ENET_INCLUDE_DIRS}/enet.h")
+  file(STRINGS "${ENET_INCLUDE_DIRS}/enet.h" ENET_VERSION_MAJOR_LINE REGEX "^#define[ \t]+ENET_VERSION_MAJOR[ \t]+[0-9]+$")
+  file(STRINGS "${ENET_INCLUDE_DIRS}/enet.h" ENET_VERSION_MINOR_LINE REGEX "^#define[ \t]+ENET_VERSION_MINOR[ \t]+[0-9]+$")
+  file(STRINGS "${ENET_INCLUDE_DIRS}/enet.h" ENET_VERSION_PATCH_LINE REGEX "^#define[ \t]+ENET_VERSION_PATCH[ \t]+[0-9]+$")
+  string(REGEX REPLACE "^#define[ \t]+ENET_VERSION_MAJOR[ \t]+([0-9]+)$" "\\1" ENET_VERSION_MAJOR "${ENET_VERSION_MAJOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+ENET_VERSION_MINOR[ \t]+([0-9]+)$" "\\1" ENET_VERSION_MINOR "${ENET_VERSION_MINOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+ENET_VERSION_PATCH[ \t]+([0-9]+)$" "\\1" ENET_VERSION_PATCH "${ENET_VERSION_PATCH_LINE}")
+  set(ENET_VERSION_STRING ${ENET_VERSION_MAJOR}.${ENET_VERSION_MINOR}.${ENET_VERSION_PATCH})
+  unset(ENET_VERSION_MAJOR_LINE)
+  unset(ENET_VERSION_MINOR_LINE)
+  unset(ENET_VERSION_PATCH_LINE)
+  unset(ENET_VERSION_MAJOR)
+  unset(ENET_VERSION_MINOR)
+  unset(ENET_VERSION_PATCH)
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(ENET
+                                  REQUIRED_VARS ENET_LIBRARIES ENET_INCLUDE_DIRS
+                                  VERSION_VAR ENET_VERSION_STRING)
+
+if(ENET_FOUND)
+  if(NOT TARGET ENET)
+    add_library(ENET INTERFACE IMPORTED)
+    set_target_properties(ENET PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${ENET_INCLUDE_DIRS}"
+      INTERFACE_LINK_LIBRARIES "${ENET_LIBRARIES}")
+  endif()
+endif()
diff --git a/cmake/FindPSXSDK.cmake b/cmake/FindPSXSDK.cmake
new file mode 100644
index 0000000..2d1982d
--- /dev/null
+++ b/cmake/FindPSXSDK.cmake
@@ -0,0 +1,94 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindPSXSDK
+-----------
+
+Find PSXSDK (an open source software development kit for the original
+Sony PlayStation) libraries and header files.
+
+Imported targets
+^^^^^^^^^^^^^^^^
+
+This module defines the following :prop_tgt:`IMPORTED` targets:
+
+  ``PSXSDK::PSXSDK``,
+  The PSXSDK `psx` library, if found.
+
+Result variables
+^^^^^^^^^^^^^^^^
+
+This module will set the following variables in your project:
+
+``PSXSDK_FOUND``
+  true if PSXSDK libraries and header files were found.
+``PSXSDK_VERSION``
+  PSXSDK release version
+``PSXSDK_INCLUDE_DIRS``
+  the directory containing the PSXSDK headers; note
+  ``PSXSDK_INCLUDE_DIRS`` is also required
+``PSXSDK_LIBRARIES``
+  PSXSDK libraries to be linked; note ``PSXSDK_LIBRARIES`` is also
+  required
+
+#]=======================================================================]
+
+find_path(PSXSDK_INCLUDE_DIRS
+    NAMES
+        huff.h
+        meidogte.h
+        meidogte_inline.h
+        memcard.h
+        modplay.h
+        psxbios.h
+        psxcdrom.h
+        psxgpu.h
+        psxgte.h
+        psx.h
+        psxpad.h
+        psxsio.h
+        psxspu.h
+        psxutil.h
+        runexe.h
+        search.h
+    HINTS
+        ENV PSXSDK_PATH
+    PATH_SUFFIXES
+        include
+)
+
+find_library(PSXSDK_LIBRARIES
+    NAMES psx
+    HINTS
+        ENV PSXSDK_PATH
+    PATH_SUFFIXES
+        lib
+)
+
+if(PSXSDK_INCLUDE_DIRS AND EXISTS "${PSXSDK_INCLUDE_DIRS}/psx.h")
+    set(version_regex "^#define[ \t]+PSXSDK_VERSION_STRING[ \t]+\"([0-9\.]+)\"$")
+    file(STRINGS "${PSXSDK_INCLUDE_DIRS}/psx.h" PSXSDK_VERSION_LINE REGEX ${version_regex})
+    string(REGEX REPLACE ${version_regex} "\\1" PSXSDK_VERSION "${PSXSDK_VERSION_LINE}")
+    unset(PSXSDK_VERSION_LINE)
+    unset(version_regex)
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(PSXSDK
+    REQUIRED_VARS
+        PSXSDK_LIBRARIES PSXSDK_INCLUDE_DIRS
+    VERSION_VAR
+        PSXSDK_VERSION
+)
+
+if(PSXSDK_FOUND)
+    if(NOT TARGET PSXSDK::PSXSDK)
+        add_library(PSXSDK::PSXSDK INTERFACE IMPORTED)
+        target_include_directories(PSXSDK::PSXSDK
+            INTERFACE "${PSXSDK_INCLUDE_DIRS}")
+        set_target_properties(PSXSDK::PSXSDK PROPERTIES
+            IMPORTED_LOCATION "${PSXSDK_LIBRARIES}")
+    endif()
+endif()
diff --git a/cmake/FindSDL_gfx.cmake b/cmake/FindSDL_gfx.cmake
new file mode 100644
index 0000000..34ff8db
--- /dev/null
+++ b/cmake/FindSDL_gfx.cmake
@@ -0,0 +1,84 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindSDL_gfx
+-----------
+
+Locate SDL_gfx library
+
+This module defines:
+
+::
+
+  SDL::SDL_gfx, the name of the target to use with target_*() commands
+  SDL_GFX_LIBRARIES, the name of the library to link against
+  SDL_GFX_INCLUDE_DIRS, where to find the headers
+  SDL_GFX_FOUND, if false, do not try to link against
+  SDL_GFX_VERSION_STRING - human-readable string containing the
+                             version of SDL_gfx
+
+$SDLDIR is an environment variable that would correspond to the
+./configure --prefix=$SDLDIR used in building SDL.
+#]=======================================================================]
+
+find_path(SDL_GFX_INCLUDE_DIRS
+  NAMES
+    SDL_framerate.h
+    SDL_gfxBlitFunc.h
+    SDL_gfxPrimitives.h
+    SDL_gfxPrimitives_font.h
+    SDL_imageFilter.h
+    SDL_rotozoom.h
+  HINTS
+    ENV SDLGFXDIR
+    ENV SDLDIR
+  PATH_SUFFIXES SDL
+                # path suffixes to search inside ENV{SDLDIR}
+                include/SDL include/SDL12 include/SDL11 include
+)
+
+if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+  set(VC_LIB_PATH_SUFFIX lib/x64)
+else()
+  set(VC_LIB_PATH_SUFFIX lib/x86)
+endif()
+
+find_library(SDL_GFX_LIBRARIES
+  NAMES SDL_gfx
+  HINTS
+    ENV SDLGFXDIR
+    ENV SDLDIR
+  PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
+)
+
+if(SDL_GFX_INCLUDE_DIRS AND EXISTS "${SDL_GFX_INCLUDE_DIRS}/SDL_gfxPrimitives.h")
+  file(STRINGS "${SDL_GFX_INCLUDE_DIRS}/SDL_gfxPrimitives.h" SDL_GFX_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_GFXPRIMITIVES_MAJOR[ \t]+[0-9]+$")
+  file(STRINGS "${SDL_GFX_INCLUDE_DIRS}/SDL_gfxPrimitives.h" SDL_GFX_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_GFXPRIMITIVES_MINOR[ \t]+[0-9]+$")
+  file(STRINGS "${SDL_GFX_INCLUDE_DIRS}/SDL_gfxPrimitives.h" SDL_GFX_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_GFXPRIMITIVES_MICRO[ \t]+[0-9]+$")
+  string(REGEX REPLACE "^#define[ \t]+SDL_GFXPRIMITIVES_MAJOR[ \t]+([0-9]+)$" "\\1" SDL_GFX_VERSION_MAJOR "${SDL_GFX_VERSION_MAJOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+SDL_GFXPRIMITIVES_MINOR[ \t]+([0-9]+)$" "\\1" SDL_GFX_VERSION_MINOR "${SDL_GFX_VERSION_MINOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+SDL_GFXPRIMITIVES_MICRO[ \t]+([0-9]+)$" "\\1" SDL_GFX_VERSION_PATCH "${SDL_GFX_VERSION_PATCH_LINE}")
+  set(SDL_GFX_VERSION_STRING ${SDL_GFX_VERSION_MAJOR}.${SDL_GFX_VERSION_MINOR}.${SDL_GFX_VERSION_PATCH})
+  unset(SDL_GFX_VERSION_MAJOR_LINE)
+  unset(SDL_GFX_VERSION_MINOR_LINE)
+  unset(SDL_GFX_VERSION_PATCH_LINE)
+  unset(SDL_GFX_VERSION_MAJOR)
+  unset(SDL_GFX_VERSION_MINOR)
+  unset(SDL_GFX_VERSION_PATCH)
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL_gfx
+                                  REQUIRED_VARS SDL_GFX_LIBRARIES SDL_GFX_INCLUDE_DIRS
+                                  VERSION_VAR SDL_GFX_VERSION_STRING)
+
+if(SDL_gfx_FOUND)
+  if(NOT TARGET SDL::SDL_gfx)
+    add_library(SDL::SDL_gfx INTERFACE IMPORTED)
+    set_target_properties(SDL::SDL_gfx PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${SDL_GFX_INCLUDE_DIRS}"
+      INTERFACE_LINK_LIBRARIES "${SDL_GFX_LIBRARIES}")
+  endif()
+endif()
diff --git a/cmake/fetch-libfixmath.cmake b/cmake/fetch-libfixmath.cmake
new file mode 100644
index 0000000..6137dd5
--- /dev/null
+++ b/cmake/fetch-libfixmath.cmake
@@ -0,0 +1,8 @@
+find_path(libfixmath "CMakeLists.txt"
+    PATHS "${PROJECT_SOURCE_DIR}/libfixmath/"
+    NO_DEFAULT_PATH)
+
+if(${libfixmath} STREQUAL "libfixmath-NOTFOUND")
+    message(STATUS "Fetching submodules...")
+    execute_process(COMMAND git submodule update --init --recursive)
+endif()
diff --git a/cmake/host.cmake b/cmake/host.cmake
new file mode 100644
index 0000000..36d7d70
--- /dev/null
+++ b/cmake/host.cmake
@@ -0,0 +1,8 @@
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(cflags ${cflags} -Og)
+else()
+    set(cflags ${cflags} -O3)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/fetch-libfixmath.cmake")
+add_subdirectory(libfixmath)
diff --git a/cmake/ps1-toolchain.cmake b/cmake/ps1-toolchain.cmake
new file mode 100644
index 0000000..26acbd9
--- /dev/null
+++ b/cmake/ps1-toolchain.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_C_COMPILER psx-gcc)
+set(CMAKE_AR mipsel-unknown-elf-ar)
diff --git a/cmake/ps1.cmake b/cmake/ps1.cmake
new file mode 100644
index 0000000..bbc1c4c
--- /dev/null
+++ b/cmake/ps1.cmake
@@ -0,0 +1,43 @@
+find_package(PSXSDK 0.7.1 REQUIRED)
+
+target_compile_definitions(${PROJECT_NAME} PUBLIC FIXMATH_FAST_SIN PSXSDK_DEBUG)
+add_custom_target(exe ALL elf2exe ${PROJECT_NAME}
+    ${cdroot}/${PROJECT_NAME}.exe -mark="A homebrew game created with PSXSDK"
+    DEPENDS ${PROJECT_NAME})
+add_custom_target(iso ALL mkisofs -o ${PROJECT_NAME}.iso -V ${PROJECT_NAME}
+    -sysid PLAYSTATION ${cdroot} DEPENDS exe)
+
+set(license_prefix $ENV{PSXSDK_PATH}/share/licenses)
+
+if(VIDEO_MODE STREQUAL "VMODE_PAL")
+    set(region eur)
+elseif(VIDEO_MODE STREQUAL "VMODE_NTSC")
+    set(ntsc_regions usa jap)
+
+    if(NOT NTSC_REGION IN_LIST ntsc_regions)
+        message(FATAL_ERROR "Please define valid NTSC_REGION. Available options:\n"
+            "${ntsc_regions}\n"
+            "Run CMake again using one of the available options above e.g.:\n"
+            "cmake .. [options] -DNTSC_REGION=US")
+    endif()
+
+    set(region ${NTSC_REGION})
+endif()
+
+set(license $ENV{PSXSDK_PATH}/share/licenses/info${region}.dat)
+
+add_custom_target(bin_cue ALL mkpsxiso ${PROJECT_NAME}.iso ${PROJECT_NAME}.bin
+    ${license} -s DEPENDS iso)
+
+if(NOT EXISTS "${cdroot}/system.cnf")
+    file(COPY "src/system.cnf" DESTINATION "${cdroot}")
+endif()
+
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(cflags ${cflags} -Og)
+else()
+    set(cflags ${cflags} -Os)
+endif()
+
+set(cflags ${cflags} -fshort-enums)
+# libfixmath is already bundled with PSXSDK.
diff --git a/cmake/win9x-toolchain.cmake b/cmake/win9x-toolchain.cmake
new file mode 100644
index 0000000..27e7538
--- /dev/null
+++ b/cmake/win9x-toolchain.cmake
@@ -0,0 +1 @@
+set(CMAKE_C_COMPILER i386-mingw32-gcc)
diff --git a/cmake/win9x.cmake b/cmake/win9x.cmake
new file mode 100644
index 0000000..c66ed5e
--- /dev/null
+++ b/cmake/win9x.cmake
@@ -0,0 +1,22 @@
+add_custom_command(OUTPUT ${cdroot}/${PROJECT_NAME}.exe
+        COMMAND i386-mingw32-strip ${PROJECT_NAME}${CMAKE_EXECUTABLE_SUFFIX}
+            -o ${cdroot}/${PROJECT_NAME}.exe
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        DEPENDS ${PROJECT_NAME}
+        VERBATIM)
+add_custom_target(stripped-exe ALL DEPENDS ${cdroot}/${PROJECT_NAME}.exe)
+
+target_link_libraries(SDL::SDL INTERFACE gdi32 user32 winmm dxguid)
+target_link_libraries(ENET INTERFACE wsock32)
+
+add_compile_options(-march=i386)
+
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    # i386-mingw32-gcc 3.4.5 does not support -Og.
+    set(cflags ${cflags} -O0)
+else()
+    set(cflags ${cflags} -Os)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/fetch-libfixmath.cmake")
+add_subdirectory(libfixmath)
diff --git a/res/CMakeLists.txt b/res/CMakeLists.txt
new file mode 100644
index 0000000..8fb119e
--- /dev/null
+++ b/res/CMakeLists.txt
@@ -0,0 +1,11 @@
+include(${CMAKE_CURRENT_LIST_DIR}/functions.cmake)
+
+sprite(NAME font
+    X 472
+    Y 0
+    BPP 4
+    CX 368
+    CY 498
+    TRANSPARENT TRUE)
+
+container(NAME ${PROJECT_NAME} SPRITES font)
diff --git a/res/LICENSE b/res/LICENSE
new file mode 100644
index 0000000..14474c2
--- /dev/null
+++ b/res/LICENSE
@@ -0,0 +1,6 @@
+All assets on this folder are either original or have originated from subfolder
+"orig". Read LICENSE file in "orig" for further reference.
+
+font.bmp:
+font_24.bmp:
+    Derived work from sprFont.png
diff --git a/res/font.bmp b/res/font.bmp
new file mode 100644
index 0000000..7fc1c36
--- /dev/null
+++ b/res/font.bmp
diff --git a/res/font_24.bmp b/res/font_24.bmp
new file mode 100644
index 0000000..b12a8ce
--- /dev/null
+++ b/res/font_24.bmp
diff --git a/res/functions.cmake b/res/functions.cmake
new file mode 100644
index 0000000..a0de87d
--- /dev/null
+++ b/res/functions.cmake
@@ -0,0 +1,109 @@
+function(sprite)
+    set(options "")
+    set(multiValueArgs "")
+    set(oneValueArgs NAME X Y TRANSPARENT BPP CX CY)
+    cmake_parse_arguments(SPRITE "${options}" "${oneValueArgs}"
+        "${multiValueArgs}" ${ARGN})
+
+    if(PS1_BUILD)
+        if(${SPRITE_TRANSPARENT})
+            set(trans -mpink)
+        endif()
+
+        if(NOT "${SPRITE_BPP}" STREQUAL "16")
+            set(clut "-clut=${SPRITE_CX},${SPRITE_CY}")
+        endif()
+
+        add_custom_target(${SPRITE_NAME}_img ALL
+            bmp2tim ${SPRITE_NAME}.bmp ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
+                ${SPRITE_BPP} -org=${SPRITE_X},${SPRITE_Y} ${clut} ${trans}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+            DEPENDS ${SPRITE_NAME}.bmp
+            BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME})
+        add_dependencies(iso ${SPRITE_NAME}_img)
+    elseif(SDL1_2_BUILD)
+        if(${SPRITE_TRANSPARENT})
+            set(trans "transparent=1")
+        else()
+            set(trans "transparent=0")
+        endif()
+
+        add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
+            COMMAND ${TOOLS_PREFIX}/bin/add-header ${trans} ${SPRITE_NAME}_24.bmp ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+            DEPENDS ${SPRITE_NAME}_24.bmp
+            VERBATIM)
+        add_custom_target(${SPRITE_NAME}_img
+            DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME})
+        add_dependencies(${SPRITE_NAME}_img tools)
+    endif()
+endfunction()
+
+function(sound)
+    set(options "")
+    set(multiValueArgs "")
+    set(oneValueArgs NAME LOOP)
+    cmake_parse_arguments(SOUND "${options}" "${oneValueArgs}"
+        "${multiValueArgs}" ${ARGN})
+
+    if(PS1_BUILD)
+        if(${SOUND_LOOP})
+            set(loop -L)
+        endif()
+
+        add_custom_target(${SOUND_NAME}_snd ALL
+            wav2vag ${SOUND_NAME}.wav
+                ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME} ${loop}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+            DEPENDS ${SOUND_NAME}.wav
+            BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME})
+        add_dependencies(iso ${SOUND_NAME}_snd)
+    elseif(SDL1_2_BUILD)
+        if(${SOUND_LOOP})
+            set(loop "loop=1")
+        else()
+            set(loop "loop=0")
+        endif()
+
+        # Reference: https://gist.github.com/socantre/7ee63133a0a3a08f3990
+        add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME}
+            COMMAND ${TOOLS_PREFIX}/bin/add-header ${loop} ${SOUND_NAME}.wav ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+            DEPENDS ${SOUND_NAME}.wav
+            VERBATIM)
+        add_custom_target(${SOUND_NAME}_snd
+            DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME})
+        add_dependencies(${SOUND_NAME}_snd tools)
+    endif()
+endfunction()
+
+function(container)
+    set(options "")
+    set(multiValueArgs SPRITES SOUNDS)
+    set(oneValueArgs NAME)
+    cmake_parse_arguments(CONTAINER "${options}" "${oneValueArgs}"
+        "${multiValueArgs}" ${ARGN})
+
+    add_custom_command(OUTPUT ${cdroot}/${CONTAINER_NAME}.cnt
+        COMMAND ${TOOLS_PREFIX}/bin/container ${CONTAINER_SPRITES} ${CONTAINER_SOUNDS}
+            ${cdroot}/${CONTAINER_NAME}.cnt
+        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+        VERBATIM)
+
+    add_custom_target(${CONTAINER_NAME}_container
+        DEPENDS ${cdroot}/${CONTAINER_NAME}.cnt)
+    add_dependencies(${PROJECT_NAME} ${CONTAINER_NAME}_container)
+    add_dependencies(${CONTAINER_NAME}_container tools)
+
+    foreach(sprite ${CONTAINER_SPRITES})
+        add_dependencies(${CONTAINER_NAME}_container ${sprite}_img)
+    endforeach()
+
+    foreach(sound ${CONTAINER_SOUNDS})
+        add_dependencies(${CONTAINER_NAME}_container ${sound}_snd)
+    endforeach()
+
+    if(PS1_BUILD)
+        add_dependencies(iso ${CONTAINER_NAME}_container)
+    endif()
+endfunction()
diff --git a/res/orig/LICENSE b/res/orig/LICENSE
new file mode 100644
index 0000000..bfab4ed
--- /dev/null
+++ b/res/orig/LICENSE
@@ -0,0 +1,3 @@
+sprFont.png:
+    https://opengameart.org/content/kl-font
+    License(s): CC0
diff --git a/res/orig/sprFont.png b/res/orig/sprFont.png
new file mode 100644
index 0000000..78a9d78
--- /dev/null
+++ b/res/orig/sprFont.png
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..51806be
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,43 @@
+# wanix, a Unix-like operating system for WebAssembly
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Avoid C11 since it is not supported by the i386-mingw32 toolchain.
+set(cflags ${cflags} -Wall -ffunction-sections -fdata-sections -pedantic)
+
+set(components
+)
+
+set(interfaces
+)
+
+target_compile_options(${PROJECT_NAME} PUBLIC ${cflags})
+# Dependencies for main.c
+# target_link_libraries(${PROJECT_NAME} PRIVATE)
+
+foreach(c ${components})
+    add_subdirectory("${c}")
+    target_compile_options(${c} PUBLIC ${cflags})
+    target_compile_features(${c} PUBLIC c_std_99)
+    set_target_properties(${c} PROPERTIES C_STANDARD 99 C_EXTENSIONS OFF)
+endforeach()
+
+foreach(i ${interfaces})
+    add_subdirectory("${i}")
+    target_compile_options(${i} INTERFACE ${cflags})
+    target_link_libraries(${PROJECT_NAME} PRIVATE ${c})
+endforeach()
+
+target_link_options(${PROJECT_NAME} PRIVATE -Wl,--gc-sections)
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..09c1f21
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,25 @@
+/*
+ * wanix, a Unix-like operating system for WebAssembly
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+
+int main(void)
+{
+    int ret = EXIT_SUCCESS;
+    return ret;
+}
diff --git a/src/system.cnf b/src/system.cnf
new file mode 100644
index 0000000..716bb6c
--- /dev/null
+++ b/src/system.cnf
@@ -0,0 +1,4 @@
+BOOT = cdrom:\wanix.exe;1
+TCB = 4
+EVENT = 8
+STACK = 801FF800
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
new file mode 100644
index 0000000..14d2b0e
--- /dev/null
+++ b/tools/CMakeLists.txt
@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.0)
+project(utils)
+add_executable(container "container.c")
+add_executable(add-header "add-header.c")
+set(cflags -Wall -g3)
+target_compile_options(container PUBLIC ${cflags})
+target_compile_options(add-header PUBLIC ${cflags})
+install(TARGETS container add-header DESTINATION bin)
diff --git a/tools/add-header.c b/tools/add-header.c
new file mode 100644
index 0000000..75f7458
--- /dev/null
+++ b/tools/add-header.c
@@ -0,0 +1,67 @@
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char **const argv)
+{
+    int ret = EXIT_FAILURE;
+    FILE *in = NULL, *out = NULL;
+
+    if (argc < 3)
+    {
+        fprintf(stderr, "%s [arg ...] <in-file> <out-file>\n", *argv);
+        goto end;
+    }
+
+    const char *const in_path = argv[argc - 2],
+        *const out_path = argv[argc - 1];
+
+    if (!(out = fopen(out_path, "wb")))
+    {
+        fprintf(stderr, "could not open %s: %s\n", out_path, strerror(errno));
+        goto end;
+    }
+    else if (!(in = fopen(in_path, "rb")))
+    {
+        fprintf(stderr, "could not open %s: %s\n", in_path, strerror(errno));
+        goto end;
+    }
+
+    for (int i = 1; i < argc - 2; i++)
+    {
+        if (fprintf(out, "%s", argv[i]) < 0
+            || putc('\0', out) == EOF
+            || ferror(out))
+        {
+            fprintf(stderr, "failed writing to %s\n", out_path);
+            goto end;
+        }
+    }
+
+    while (!feof(in))
+    {
+        char c;
+
+        if ((!fread(&c, sizeof c, 1, in)
+            || !fwrite(&c, sizeof c, 1, out))
+            && (ferror(in) || ferror(out)))
+        {
+            fprintf(stderr, "ferror(%s)=%d, ferror(%s)=%d\n",
+                in_path, ferror(in), out_path, ferror(out));
+            goto end;
+        }
+    }
+
+    ret = EXIT_SUCCESS;
+
+end:
+    if (out)
+        fclose(out);
+
+    if (in)
+        fclose(in);
+
+    return ret;
+}
diff --git a/tools/container.c b/tools/container.c
new file mode 100644
index 0000000..254eee3
--- /dev/null
+++ b/tools/container.c
@@ -0,0 +1,129 @@
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static const char *filename(const char *const path)
+{
+    const char *ret = &path[strlen(path)];
+
+    while (ret != path && *(ret - 1) != '\\' && *(ret - 1) != '/')
+        ret--;
+
+    return ret;
+}
+
+static int dump_file(const char *const path, const char *const outpath,
+    FILE *const out)
+{
+    int ret = -1;
+    FILE *const f = fopen(path, "rb");
+
+    if (!f)
+    {
+        fprintf(stderr, "%s: could not open %s: %s\n",
+            __func__, path, strerror(errno));
+        goto end;
+    }
+
+    const char *const bname = filename(path);
+
+    if (fprintf(out, "%s", bname) < 0)
+    {
+        fprintf(stderr, "fprintf(f, %s): %s\n", path, strerror(errno));
+        goto end;
+    }
+    else if (fputc('\0', out) == EOF)
+    {
+        perror("could not write null character");
+        goto end;
+    }
+    else if (fseek(f, 0, SEEK_END))
+    {
+        perror("fseek(SEEK_END)");
+        goto end;
+    }
+
+    /* This won't work on files larger than 2 GiB if sizeof sz == 4,
+     * but this is acceptable for a PS1 video game. */
+    const long sz = ftell(f);
+
+    if (fprintf(out, "%ld", sz) < 0)
+    {
+        perror("could not write file size");
+        goto end;
+    }
+    else if (fputc('\0', out) == EOF)
+    {
+        perror("could not write null character");
+        goto end;
+    }
+    else if (fseek(f, 0, SEEK_SET))
+    {
+        fprintf(stderr, "%s: fseek(SEEK_SET): %s\n", __func__, strerror(errno));
+        goto end;
+    }
+
+    while (!feof(f))
+    {
+        char c;
+
+        if (!fread(&c, sizeof c, 1, f))
+        {
+            if (ferror(f))
+            {
+                fprintf(stderr, "%s: ferror\n", path);
+                goto end;
+            }
+        }
+        else if (fputc(c, out) == EOF)
+        {
+            fprintf(stderr, "could not dump %s to %s", path, outpath);
+            goto end;
+        }
+    }
+
+    ret = 0;
+
+end:
+    if (f)
+        fclose(f);
+
+    return ret;
+}
+
+int main(const int argc, const char *const *const argv)
+{
+    int ret = EXIT_FAILURE;
+    size_t n_in = 0;
+    FILE *out = NULL;
+
+    if (argc < 3)
+    {
+        fprintf(stderr, "%s <file1> [<file2> ...] <output>\n", *argv);
+        goto end;
+    }
+
+    const char *const outpath = argv[argc - 1];
+
+    n_in = argc - 2;
+
+    if (!(out = fopen(outpath, "wb")))
+    {
+        fprintf(stderr, "could not open %s: %s\n", outpath, strerror(errno));
+        goto end;
+    }
+
+    for (size_t i = 0; i < n_in; i++)
+        if (dump_file(argv[i + 1], outpath, out))
+            goto end;
+
+    ret = EXIT_SUCCESS;
+
+end:
+    if (out)
+        fclose(out);
+
+    return ret;
+}