Add bt_log macro for logging AI actions

CMakeLists.txt

@@ -45,6 +45,8 @@ option(PSEMEK_LEGACY_UI "Use legacy UI library" OFF)
 
 message(STATUS "Using backend ${PSEMEK_BACKEND}")
 
+option(PSEMEK_BT_LOG "Add logging for behavior tree actions" OFF)
+
 if(PSEMEK_BACKEND STREQUAL "ANDROID")
 	set(PSEMEK_GL_API gles32)
 	set(PSEMEK_GL_LIBRARIES GLESv3 EGL)

libs/bt/CMakeLists.txt

@@ -4,3 +4,6 @@ file(GLOB_RECURSE PSEMEK_BT_SOURCES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "sour
 psemek_add_library(psemek-bt ${PSEMEK_BT_HEADERS} ${PSEMEK_BT_SOURCES})
 target_include_directories(psemek-bt PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include")
 target_link_libraries(psemek-bt PUBLIC psemek-util psemek-log)
+if(PSEMEK_BT_LOG)
+	target_compile_definitions(psemek-bt PUBLIC -DPSEMEK_BT_LOG=1)
+endif()

libs/bt/include/psemek/bt/log.hpp

@@ -0,0 +1,9 @@
+#pragma once
+
+#ifdef PSEMEK_BT_LOG
+#include <psemek/log/log.hpp>
+#define bt_log ::psemek::log::debug
+#else
+#include <psemek/util/null_ostream.hpp>
+#define bt_log ::psemek::util::null_ostream
+#endif