From 3c721273c0fb8f38611272bf7ca541af487bca06 Mon Sep 17 00:00:00 2001
From: Adrian Scripca <benishor@gmail.com>
Date: Sat, 23 Apr 2022 18:30:16 +0300
Subject: [PATCH] Added timer

---
 src/CMakeLists.txt |  2 ++
 src/timer.cpp      | 23 +++++++++++++++++++++++
 src/timer.h        | 20 ++++++++++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 src/timer.cpp
 create mode 100644 src/timer.h

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d5cee80..3b1127c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -9,6 +9,7 @@ set(HEADERS
         ${CMAKE_CURRENT_SOURCE_DIR}/shader.h
         ${CMAKE_CURRENT_SOURCE_DIR}/texture.h
         ${CMAKE_CURRENT_SOURCE_DIR}/texture_generator.h
+        ${CMAKE_CURRENT_SOURCE_DIR}/timer.h
         PARENT_SCOPE
         )
 
@@ -21,5 +22,6 @@ set(SOURCE
         ${CMAKE_CURRENT_SOURCE_DIR}/shader.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/texture.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/texture_generator.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/timer.cpp
         PARENT_SCOPE
         )
diff --git a/src/timer.cpp b/src/timer.cpp
new file mode 100644
index 0000000..f8f4e9b
--- /dev/null
+++ b/src/timer.cpp
@@ -0,0 +1,23 @@
+#include "timer.h"
+
+BEGIN_NAMESPACE
+
+timer::timer() {
+    start_time = std::chrono::system_clock::now();
+    last_lap_time = start_time;
+}
+
+double timer::seconds_since_start() {
+    std::chrono::time_point<std::chrono::system_clock> now = std::chrono::system_clock::now();
+    std::chrono::duration<double> elapsed_seconds = now - start_time;
+    return elapsed_seconds.count();
+}
+
+double timer::lap() {
+    std::chrono::time_point<std::chrono::system_clock> now = std::chrono::system_clock::now();
+    std::chrono::duration<double> elapsed_seconds = now - last_lap_time;
+    last_lap_time = now;
+    return elapsed_seconds.count();
+}
+
+END_NAMESPACE
diff --git a/src/timer.h b/src/timer.h
new file mode 100644
index 0000000..03c0b8b
--- /dev/null
+++ b/src/timer.h
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "defines.h"
+#include <chrono>
+
+BEGIN_NAMESPACE
+
+class timer {
+public:
+    timer();
+
+    double seconds_since_start();
+    double lap();
+
+private:
+    std::chrono::time_point<std::chrono::system_clock> start_time;
+    std::chrono::time_point<std::chrono::system_clock> last_lap_time;
+};
+
+END_NAMESPACE
\ No newline at end of file