From 8382d1caecc689f4dc287cda6fb5f28e2efb4c85 Mon Sep 17 00:00:00 2001
From: Priec <filippriec@gmail.com>
Date: Thu, 11 Dec 2025 11:30:56 +0100
Subject: [PATCH] button press and blinking led on a button press

---
 semestralka1/src/hardware/button.cpp | 16 +++++++++++++++-
 semestralka1/src/hardware/button.h   |  4 +++-
 semestralka1/src/render/loop.cpp     |  3 +--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/semestralka1/src/hardware/button.cpp b/semestralka1/src/hardware/button.cpp
index 90b20c3..8932b9f 100644
--- a/semestralka1/src/hardware/button.cpp
+++ b/semestralka1/src/hardware/button.cpp
@@ -1,7 +1,7 @@
 // src/hardware/button.cpp
 #include "button.h"
 
-ButtonHandler::ButtonHandler(PinName pin) : button(pin) {
+ButtonHandler::ButtonHandler(PinName pin, PinName led_pin) : button(pin), led(led_pin, 0) {
   // ISR for button press (falling edge)
   button.fall(callback(this, &ButtonHandler::on_pressed));
 }
@@ -11,9 +11,23 @@ void ButtonHandler::on_pressed() {
 }
 
 ButtonEvent ButtonHandler::poll() {
+  static Timer blink_timer;
+  static bool blinking = false;
+
   if (pressed_flag) {
     pressed_flag = false;
+    led = 1;
+    blink_timer.reset();
+    blink_timer.start();
+    blinking = true;
     return ButtonEvent::Pressed;
   }
+
+  if (blinking && blink_timer.elapsed_time() >= 500ms) {
+    led = 0;
+    blink_timer.stop();
+    blinking = false;
+  }
+
   return ButtonEvent::None;
 }
diff --git a/semestralka1/src/hardware/button.h b/semestralka1/src/hardware/button.h
index 60e4080..1748d8f 100644
--- a/semestralka1/src/hardware/button.h
+++ b/semestralka1/src/hardware/button.h
@@ -10,12 +10,14 @@ enum class ButtonEvent {
 class ButtonHandler {
 private:
   InterruptIn button;
+  DigitalOut led;
   volatile bool pressed_flag = false;
+  volatile bool blink_flag = false;
 
   void on_pressed();
 
 public:
-  ButtonHandler(PinName pin = BUTTON1);
+  ButtonHandler(PinName pin = BUTTON1, PinName led_pin = LED1);
 
   ButtonEvent poll();
 };
diff --git a/semestralka1/src/render/loop.cpp b/semestralka1/src/render/loop.cpp
index 4a38189..8822978 100644
--- a/semestralka1/src/render/loop.cpp
+++ b/semestralka1/src/render/loop.cpp
@@ -5,6 +5,7 @@
 #include "background.h"
 #include "mbed.h"
 #include "player.h"
+#include "background.h"
 #include "../game/state.h"
 #include "../game/animation.h"
 #include "../game/collision.h"
@@ -22,8 +23,6 @@ extern DigitalOut led;
 constexpr int PLAYER_X = 29;
 constexpr int PLAYER_Y = 6;
 
-void draw_mask(const char *unused_filename, int shift);
-
 void render_loop(int speed) {
   MovementState player_state;
   AnimationController animation;