Initial commit

src/game/scripting/safe_execution.cpp

@@ -0,0 +1,74 @@
+#include <stdinc.hpp>
+#include "safe_execution.hpp"
+
+#pragma warning(push)
+#pragma warning(disable: 4611)
+
+namespace scripting::safe_execution
+{
+	namespace
+	{
+		bool execute_with_seh(const script_function function, const game::scr_entref_t& entref)
+		{
+			__try
+			{
+				function(entref);
+				return true;
+			}
+			__except (EXCEPTION_EXECUTE_HANDLER)
+			{
+				return false;
+			}
+		}
+	}
+
+	bool call(const script_function function, const game::scr_entref_t& entref)
+	{
+		*game::g_script_error_level += 1;
+		if (game::_setjmp(&game::g_script_error[*game::g_script_error_level]))
+		{
+			*game::g_script_error_level -= 1;
+			return false;
+		}
+
+		const auto result = execute_with_seh(function, entref);
+		*game::g_script_error_level -= 1;
+		return result;
+	}
+
+	bool set_entity_field(const game::scr_entref_t& entref, const int offset)
+	{
+		*game::g_script_error_level += 1;
+		if (game::_setjmp(&game::g_script_error[*game::g_script_error_level]))
+		{
+			*game::g_script_error_level -= 1;
+			return false;
+		}
+
+		game::Scr_SetObjectField(entref.classnum, entref.entnum, offset);
+
+		*game::g_script_error_level -= 1;
+		return true;
+	}
+
+	bool get_entity_field(const game::scr_entref_t& entref, const int offset, game::VariableValue* value)
+	{
+		*game::g_script_error_level += 1;
+		if (game::_setjmp(&game::g_script_error[*game::g_script_error_level]))
+		{
+			value->type = game::SCRIPT_NONE;
+			value->u.intValue = 0;
+			*game::g_script_error_level -= 1;
+			return false;
+		}
+
+		const auto _value = game::GetEntityFieldValue(entref.classnum, entref.entnum, offset);
+		value->type = _value.type;
+		value->u = _value.u;
+
+		*game::g_script_error_level -= 1;
+		return true;
+	}
+}
+
+#pragma warning(pop)