From a40e6361ba7172e0a3f3b16e2d286db9928e94e2 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Thu, 26 Jan 2023 17:28:42 +0100
Subject: Added build version identification to title screen

Since this uses configure_file it might have problems sometimes when
trying to detect updated value. It will be better to move it to use
custom target instead.
---
 CMakeLists.txt                  |  3 +++
 cmake/modules/GitRevParse.cmake | 14 ++++++++++++++
 kurator/CMakeLists.txt          |  5 +++++
 kurator/src/Title.cpp           |  3 +++
 kurator/src/version.cpp.conf    |  8 ++++++++
 kurator/src/version.h           | 10 ++++++++++
 version.txt.conf                |  1 +
 7 files changed, 44 insertions(+)
 create mode 100644 cmake/modules/GitRevParse.cmake
 create mode 100644 kurator/src/version.cpp.conf
 create mode 100644 kurator/src/version.h
 create mode 100644 version.txt.conf

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 145635f..fe35ab7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,9 +8,12 @@ find_package(EnTT 3 REQUIRED)
 find_package(nlohmann_json 3 REQUIRED)
 find_package(raylib 4 REQUIRED)
 include(AddResources)
+include(GitRevParse)
+git_rev_parse(KURATOR_VERSION)
 add_subdirectory(campaign)
 add_subdirectory(contrib)
 add_subdirectory(kurator)
 add_subdirectory(sim)
 add_subdirectory(stats)
 add_subdirectory(universe)
+configure_file(version.txt.conf "${CMAKE_CURRENT_BINARY_DIR}/version.txt" @ONLY)
diff --git a/cmake/modules/GitRevParse.cmake b/cmake/modules/GitRevParse.cmake
new file mode 100644
index 0000000..9005d65
--- /dev/null
+++ b/cmake/modules/GitRevParse.cmake
@@ -0,0 +1,14 @@
+function(git_rev_parse VAR)
+	execute_process(
+		COMMAND git rev-parse --short HEAD
+		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+		RESULT_VARIABLE PARSE_RESULT
+		OUTPUT_VARIABLE PARSE_OUTPUT
+		OUTPUT_STRIP_TRAILING_WHITESPACE
+	)
+	if(NOT PARSE_RESULT)
+		set(${VAR} ${PARSE_OUTPUT} PARENT_SCOPE)
+	else()
+		set(${VAR} "Unknown" PARENT_SCOPE)
+	endif()
+endfunction()
diff --git a/kurator/CMakeLists.txt b/kurator/CMakeLists.txt
index 2fd6c55..7add534 100644
--- a/kurator/CMakeLists.txt
+++ b/kurator/CMakeLists.txt
@@ -27,6 +27,11 @@ target_link_libraries(
 	PRIVATE stats
 	PRIVATE universe
 )
+configure_file(src/version.cpp.conf "${CMAKE_CURRENT_BINARY_DIR}/version.cpp" @ONLY)
+target_sources(
+	${PROJECT_NAME}
+	PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/version.cpp"
+)
 add_resources(
 	kurator_resources FILES
 	resources/skybox.png
diff --git a/kurator/src/Title.cpp b/kurator/src/Title.cpp
index 2801799..e5d2e2f 100644
--- a/kurator/src/Title.cpp
+++ b/kurator/src/Title.cpp
@@ -8,6 +8,7 @@
 
 #include "SceneBuilder.h"
 #include "Session.h"
+#include "version.h"
 
 
 namespace kurator
@@ -45,6 +46,8 @@ Title::draw() const
 	const int width = GetScreenWidth();
 	const int title = MeasureText(text, 20);
 	DrawText(text, (width - title) / 2, 100, 20, GRAY);
+	const int height = GetScreenHeight();
+	DrawText(VERSION, 10, height - 15, 10, DARKGRAY);
 }
 
 
diff --git a/kurator/src/version.cpp.conf b/kurator/src/version.cpp.conf
new file mode 100644
index 0000000..a6d0aa0
--- /dev/null
+++ b/kurator/src/version.cpp.conf
@@ -0,0 +1,8 @@
+namespace kurator
+{
+
+
+const char* VERSION {"@KURATOR_VERSION@"};
+
+
+}  // namespace kurator
diff --git a/kurator/src/version.h b/kurator/src/version.h
new file mode 100644
index 0000000..cf58629
--- /dev/null
+++ b/kurator/src/version.h
@@ -0,0 +1,10 @@
+#pragma once
+
+namespace kurator
+{
+
+
+extern const char* VERSION;
+
+
+}  // namespace kurator
diff --git a/version.txt.conf b/version.txt.conf
new file mode 100644
index 0000000..926d433
--- /dev/null
+++ b/version.txt.conf
@@ -0,0 +1 @@
+@KURATOR_VERSION@
-- 
cgit v1.1