block place/remove timers

[blank.git] / src / timer.hpp

diff --git a/src/timer.hpp b/src/timer.hpp
new file mode 100644 (file)
index 0000000..c5445b2
--- /dev/null
+++ b/src/timer.hpp
@@ -0,0 +1,49 @@
+#ifndef BLANK_TIMER_HPP
+#define BLANK_TIMER_HPP
+
+
+namespace blank {
+
+class IntervalTimer {
+
+public:
+       explicit IntervalTimer(int interval_ms) noexcept
+       : intv(interval_ms) { }
+
+       void Start() noexcept {
+               speed = 1;
+       }
+       void Stop() noexcept {
+               value = 0;
+               speed = 0;
+       }
+
+       bool Running() const noexcept {
+               return speed != 0;
+       }
+       bool Hit() const noexcept {
+               return Running() && value % intv < last_dt;
+       }
+       int Elapsed() const noexcept {
+               return value;
+       }
+       int Iteration() const noexcept {
+               return value / intv;
+       }
+
+       void Update(int dt) noexcept {
+               value += dt * speed;
+               last_dt = dt;
+       }
+
+private:
+       int intv;
+       int value = 0;
+       int speed = 0;
+       int last_dt = 0;
+
+};
+
+}
+
+#endif