From 50f4f02f8545f641bb21efd42d5a15a770f7dca3 Mon Sep 17 00:00:00 2001
From: Alex Zenla <alex@fork.run>
Date: Sat, 3 Aug 2024 23:28:29 -0700
Subject: [PATCH] SDL3 support

---
 CMakeLists.txt                       |  2 ++
 Sources/CMakeLists.txt               |  1 +
 Sources/SDL3/CMakeLists.txt          |  7 +++++++
 Sources/SDL3/SDL3.cpp                |  1 +
 Sources/SDL3/SDL3.h                  |  3 +++
 Sources/SDL3/module.modulemap        |  3 +++
 Sources/SwiftFrontend/CMakeLists.txt |  2 +-
 Sources/SwiftFrontend/main.swift     | 11 ++++++++---
 8 files changed, 26 insertions(+), 4 deletions(-)
 create mode 100644 Sources/SDL3/CMakeLists.txt
 create mode 100644 Sources/SDL3/SDL3.cpp
 create mode 100644 Sources/SDL3/SDL3.h
 create mode 100644 Sources/SDL3/module.modulemap

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32ac31e..38ca47c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,4 +5,6 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
 include(InitializeSwift)
 include(AddSwift)
 
+find_package(SDL3 CONFIG REQUIRED)
+
 add_subdirectory(Sources)
diff --git a/Sources/CMakeLists.txt b/Sources/CMakeLists.txt
index 5c44d74..e8a2145 100644
--- a/Sources/CMakeLists.txt
+++ b/Sources/CMakeLists.txt
@@ -1,2 +1,3 @@
 add_subdirectory(SwiftFrontend)
+add_subdirectory(SDL3)
 add_subdirectory(CppBackend)
diff --git a/Sources/SDL3/CMakeLists.txt b/Sources/SDL3/CMakeLists.txt
new file mode 100644
index 0000000..3fc394a
--- /dev/null
+++ b/Sources/SDL3/CMakeLists.txt
@@ -0,0 +1,7 @@
+add_library(SDL3 STATIC SDL3.h SDL3.cpp)
+set_property(TARGET SDL3 PROPERTY Swift_MODULE_NAME "SDL3")
+set_property(TARGET SDL3 PROPERTY CXX_STANDARD 20)
+
+target_compile_options(SDL3 PUBLIC "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
+target_include_directories(SDL3 PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
+target_link_libraries(SDL3 PUBLIC SDL3::SDL3)
diff --git a/Sources/SDL3/SDL3.cpp b/Sources/SDL3/SDL3.cpp
new file mode 100644
index 0000000..cf04475
--- /dev/null
+++ b/Sources/SDL3/SDL3.cpp
@@ -0,0 +1 @@
+#include "SDL3.h"
diff --git a/Sources/SDL3/SDL3.h b/Sources/SDL3/SDL3.h
new file mode 100644
index 0000000..3771e11
--- /dev/null
+++ b/Sources/SDL3/SDL3.h
@@ -0,0 +1,3 @@
+#pragma once
+
+#include <SDL3/SDL.h>
diff --git a/Sources/SDL3/module.modulemap b/Sources/SDL3/module.modulemap
new file mode 100644
index 0000000..1091db3
--- /dev/null
+++ b/Sources/SDL3/module.modulemap
@@ -0,0 +1,3 @@
+module SDL3 {
+  header "SDL3.h"
+}
diff --git a/Sources/SwiftFrontend/CMakeLists.txt b/Sources/SwiftFrontend/CMakeLists.txt
index ebaff1b..6ecc7bb 100644
--- a/Sources/SwiftFrontend/CMakeLists.txt
+++ b/Sources/SwiftFrontend/CMakeLists.txt
@@ -1,2 +1,2 @@
 add_executable(SwiftFrontend main.swift)
-target_link_libraries(SwiftFrontend PRIVATE CppBackend)
+target_link_libraries(SwiftFrontend PRIVATE CppBackend SDL3)
diff --git a/Sources/SwiftFrontend/main.swift b/Sources/SwiftFrontend/main.swift
index 9d3c0b7..520f343 100644
--- a/Sources/SwiftFrontend/main.swift
+++ b/Sources/SwiftFrontend/main.swift
@@ -1,4 +1,9 @@
-import CppBackend
+import Foundation
+import SDL3
 
-backend_init()
-print("Hello World")
+guard SDL_Init(SDL_INIT_VIDEO) >= 0 else {
+    print("SDL init failed.")
+    exit(0)
+}
+print("SDL init success.")
+SDL_Quit()