From e9881f2fa64b706086e7509bb0878ebba45d8af3 Mon Sep 17 00:00:00 2001
From: Krzysztof Klinikowski <kkszysiu@gmail.com>
Date: Fri, 13 Sep 2019 19:42:11 +0200
Subject: [PATCH] Android port (#179)

---
 CMakeLists.txt          | 62 +++++++++++++++++++++++++++++++++++------
 SourceX/main.cpp        |  6 ++--
 SourceX/storm/storm.cpp |  8 ++++--
 3 files changed, 63 insertions(+), 13 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e3070997d0..36d24e8eaf3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,10 @@ if(HAIKU)
   set(ASAN OFF)
 endif()
 
+if(ANDROID)
+  set(ASAN OFF)
+endif()
+
 if(DIST)
   set(sodium_USE_STATIC_LIBS ON)
 endif()
@@ -65,13 +69,15 @@ if(NOT CMAKE_SIZEOF_VOID_P EQUAL 4)
 endif()
 
 find_package(Threads REQUIRED)
-find_package(SDL2 CONFIG QUIET)
-if (NOT SDL2_FOUND)
-	find_package(SDL2 REQUIRED)
+if (NOT ANDROID)
+  find_package(SDL2 CONFIG QUIET)
+  if (NOT SDL2_FOUND)
+    find_package(SDL2 REQUIRED)
+  endif()
+  find_package(SDL2_ttf REQUIRED)
+  find_package(SDL2_mixer REQUIRED)
+  find_package(sodium REQUIRED)
 endif()
-find_package(SDL2_ttf REQUIRED)
-find_package(SDL2_mixer REQUIRED)
-find_package(sodium REQUIRED)
 
 add_library(smacker STATIC
   3rdParty/libsmacker/smk_bitstream.c
@@ -171,7 +177,7 @@ add_library(devilution STATIC
   Source/trigs.cpp
   Source/wave.cpp)
 
-add_executable(devilutionx
+SET(devilutionx_SRCS
   SourceX/dx.cpp
   SourceX/miniwin/misc.cpp
   SourceX/miniwin/misc_io.cpp
@@ -205,6 +211,32 @@ add_executable(devilutionx
   SourceX/DiabloUI/title.cpp
   SourceX/main.cpp)
 
+if (NOT ANDROID)
+add_executable(devilutionx
+  ${devilutionx_SRCS})
+else()
+add_library(devilutionx SHARED
+  ${devilutionx_SRCS})
+endif()
+
+if (ANDROID)
+	target_include_directories(devilutionx PUBLIC
+		SourceX
+		${CMAKE_CURRENT_SOURCE_DIR}/android-project/app/libs/include
+		${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2/include
+
+		# SDL_internal.h is located in src required by SDL_android_main.c bridge
+		${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2/src
+
+		${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_mixer/include
+		${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_ttf/include
+		)
+
+	add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2/ ${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2)
+	add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_mixer/ ${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_mixer)
+	add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_ttf/ ${CMAKE_CURRENT_SOURCE_DIR}/android-project/SDL2_ttf)
+endif()
+
 target_include_directories(devilution PUBLIC Source SourceS)
 target_include_directories(devilutionx PRIVATE
   SourceX
@@ -218,11 +250,21 @@ target_link_libraries(devilutionx PRIVATE
   PKWare
   StormLib
   smacker
-  Radon
+  Radon)
+
+if (NOT ANDROID)
+target_link_libraries(devilutionx PRIVATE
   SDL2::SDL2main
   SDL2::SDL2_ttf
   SDL2::SDL2_mixer
   sodium)
+else()
+	target_link_libraries(devilutionx PRIVATE
+	SDL2
+	SDL2_ttf
+	SDL2_mixer
+	${CMAKE_CURRENT_SOURCE_DIR}/android-project/app/libs/jni/${ANDROID_ARCH_NAME}/libsodiumjni.so)
+endif()
 
 target_compile_definitions(devilution PRIVATE DEVILUTION_ENGINE)
 target_compile_definitions(devilution PUBLIC
@@ -289,3 +331,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 	# Silence appfat.cpp warnings
   set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -Wno-narrowing")
 endif()
+
+if (ANDROID)
+	set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -Wno-format-security")
+endif()
diff --git a/SourceX/main.cpp b/SourceX/main.cpp
index 63acbcc4f98..71356b5f2d2 100644
--- a/SourceX/main.cpp
+++ b/SourceX/main.cpp
@@ -22,10 +22,12 @@ static std::string build_cmdline(int argc, char **argv)
 	return str;
 }
 
+#ifdef __ANDROID__
+int SDL_main(int argc, char **argv)
+#else
 int main(int argc, char **argv)
+#endif
 {
 	auto cmdline = build_cmdline(argc, argv);
 	return dvl::WinMain(NULL, NULL, (char *)cmdline.c_str(), 0);
 }
-
-
diff --git a/SourceX/storm/storm.cpp b/SourceX/storm/storm.cpp
index 78ba2a3acb0..ad318723d66 100644
--- a/SourceX/storm/storm.cpp
+++ b/SourceX/storm/storm.cpp
@@ -17,9 +17,11 @@ bool directFileAccess = false;
 static std::string getIniPath()
 {
 	char path[DVL_MAX_PATH];
-	int len = GetModuleFileNameA(ghInst, path, DVL_MAX_PATH);
-	path[len - 1] = '/';
-	strcat(path, "diablo.ini");
+	char *name = SDL_GetPrefPath("diasurgical", "devilution");
+	strncpy(path, name, DVL_MAX_PATH);
+	SDL_free(name);
+
+	strncat(path, "diablo.ini", DVL_MAX_PATH - strlen(path) - 1);
 
 	return path;
 }