X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgame%2Faccessguard.cpp;fp=source%2Fgame%2Faccessguard.cpp;h=d4c211300b2f093cb24ec0e9193743d6290eb40b;hb=48051ee2bab13f65e48c371e453b9ea65920921e;hp=0000000000000000000000000000000000000000;hpb=cb4e8bbe06dc64aff932784541a29493723fc03e;p=libs%2Fgame.git

diff --git a/source/game/accessguard.cpp b/source/game/accessguard.cpp
new file mode 100644
index 0000000..d4c2113
--- /dev/null
+++ b/source/game/accessguard.cpp
@@ -0,0 +1,61 @@
+#include "accessguard.h"
+
+namespace Msp::Game {
+
+thread_local AccessGuard *AccessGuard::instance = nullptr;
+
+AccessGuard::AccessGuard()
+{
+	if(!instance)
+		instance = this;
+}
+
+AccessGuard::AccessGuard(AccessGuard &&other):
+	flags(std::move(other.flags))
+{
+	if(&other==instance)
+		instance = this;
+}
+
+AccessGuard &AccessGuard::operator=(AccessGuard &&other)
+{
+	flags = std::move(other.flags);
+	if(&other==instance)
+		instance = this;
+	return *this;
+}
+
+AccessGuard::~AccessGuard()
+{
+	if(this==instance)
+		instance = nullptr;
+}
+
+AccessGuard &AccessGuard::get_instance()
+{
+	if(!instance)
+		throw std::logic_error("no AccessGuard instance");
+	return *instance;
+}
+
+void AccessGuard::block_all()
+{
+	default_flag = BLOCKED;
+	for(uint8_t &f: flags)
+		f = BLOCKED;
+}
+
+void AccessGuard::unblock_all()
+{
+	default_flag = UNBLOCKED;
+	for(uint8_t &f: flags)
+		f = UNBLOCKED;
+}
+
+unsigned AccessGuard::get_next_index()
+{
+	static unsigned next_index = 0;
+	return next_index++;
+}
+
+} // namespace Msp::Game