Added rapidjson as dependency

Author: sami-hatna66

CMakeLists.txt

@@ -46,4 +46,4 @@ if (PROFILING_MODE)
 else()
     target_link_libraries(crowdsim PUBLIC ${SDL2_LIBRARIES} external)
 endif()
-target_include_directories(crowdsim PUBLIC "${PROJECT_BINARY_DIR}" "${PROJECT_SOURCE_DIR}/external")
+target_include_directories(crowdsim PUBLIC ${PROJECT_BINARY_DIR} "${PROJECT_SOURCE_DIR}/external")

external/CMakeLists.txt

@@ -1,5 +1,7 @@
 # Copyright (C) 2022 Codeplay Software Ltd.
 
+include("${CMAKE_SOURCE_DIR}/vendor/rapidjson.cmake")
+
 add_library(external Actor.cpp 
                      Room.cpp 
                      Path.cpp 
@@ -10,3 +12,7 @@ add_library(external Actor.cpp
                      RandomNumber.cpp 
                      Stats.cpp
             )
+
+target_include_directories(external PUBLIC ${PROJECT_BINARY_DIR} ${RAPIDJSON_INCLUDE_DIR})
+
+add_dependencies(external rapidjson)

external/ParseInputFile.hpp

@@ -29,10 +29,10 @@
 #include "Actor.hpp"
 #include "Path.hpp"
 #include "Room.hpp"
+#include "rapidjson/document.h"
 #include <array>
 #include <fstream>
 #include <iostream>
-#include <rapidjson/document.h>
 #include <sstream>
 #include <string>
 #include <sycl/sycl.hpp>

vendor/rapidjson.cmake

@@ -0,0 +1,21 @@
+# (C) Andreas Zimmerer https://www.jibbow.com/posts/rapidjson-cmake/
+
+include(ExternalProject)
+ExternalProject_Add(
+    rapidjson
+    PREFIX "vendor/rapidjson"
+    GIT_REPOSITORY "https://github.com/Tencent/rapidjson.git"
+    GIT_TAG f54b0e47a08782a6131cc3d60f94d038fa6e0a51
+    TIMEOUT 10
+    CMAKE_ARGS
+        -DRAPIDJSON_BUILD_TESTS=OFF
+        -DRAPIDJSON_BUILD_DOC=OFF
+        -DRAPIDJSON_BUILD_EXAMPLES=OFF
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+    INSTALL_COMMAND ""
+    UPDATE_COMMAND ""
+)
+
+ExternalProject_Get_Property(rapidjson source_dir)
+set(RAPIDJSON_INCLUDE_DIR ${source_dir}/include)