ksys: Implement Timer

1 files changed, 21 insertions, 0 deletions

diff --git a/src/KingSystem/System/Timer.cpp b/src/KingSystem/System/Timer.cpp
index ad1d92e8..00749b9f 100644
--- a/src/KingSystem/System/Timer.cpp
+++ b/src/KingSystem/System/Timer.cpp
@@ -1 +1,22 @@
 #include "KingSystem/System/Timer.h"
+#include "KingSystem/System/VFR.h"
+
+namespace ksys {
+
+void Timer::update(f32* t, f32 rate) {
+    *t += VFR::instance()->getDeltaTime() * rate;
+}
+
+void Timer::update() {
+    previous_value = value;
+    update(&value, rate);
+}
+
+bool Timer::hasEnded(f32 end_time) const {
+    if (value == end_time)
+        return true;
+
+    return (previous_value - end_time) * (value - end_time) < 0.0;
+}
+
+}  // namespace ksys