From 6ef1dd9d4a1f3f1e0610e5dc289ac113985fdf8d Mon Sep 17 00:00:00 2001
From: TuxSH <1922548+TuxSH@users.noreply.github.com>
Date: Thu, 14 May 2020 20:01:30 +0100
Subject: [PATCH] Add hidKeysDownRepeat

---
 libctru/include/3ds/services/hid.h | 16 ++++++++++++++-
 libctru/source/services/hid.c      | 33 +++++++++++++++++++++++++++++-
 2 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/libctru/include/3ds/services/hid.h b/libctru/include/3ds/services/hid.h
index 62a71f2..34510c0 100644
--- a/libctru/include/3ds/services/hid.h
+++ b/libctru/include/3ds/services/hid.h
@@ -91,6 +91,13 @@ Result hidInit(void);
 /// Exits HID.
 void hidExit(void);
 
+/**
+ * @brief Sets the key repeat parameters for @ref hidKeysRepeat.
+ * @param delay Initial delay.
+ * @param interval Repeat interval.
+ */
+void hidSetRepeatParameters(u32 delay, u32 interval);
+
 /// Scans HID for input data.
 void hidScanInput(void);
 
@@ -109,7 +116,14 @@ u32 hidKeysHeld(void);
 u32 hidKeysDown(void);
 
 /**
-* @brief Returns a bitmask of newly released buttons, this frame.
+ * @brief Returns a bitmask of newly pressed or repeated buttons, this frame.
+ * Individual buttons can be extracted using binary AND.
+ * @return 32-bit bitmask of newly pressed or repeated buttons.
+ */
+u32 hidKeysDownRepeat(void);
+
+/**
+ * @brief Returns a bitmask of newly released buttons, this frame.
  * Individual buttons can be extracted using binary AND.
  * @return 32-bit bitmask of newly released buttons.
  */
diff --git a/libctru/source/services/hid.c b/libctru/source/services/hid.c
index 79fb501..683f9b1 100644
--- a/libctru/source/services/hid.c
+++ b/libctru/source/services/hid.c
@@ -21,7 +21,8 @@ Handle hidEvents[5];
 
 vu32* hidSharedMem;
 
-static u32 kOld, kHeld, kDown, kUp;
+static u32 kOld, kHeld, kDown, kUp, kRepeat;
+static u32 kDelay = 30, kInterval = 15, kCount = 30;
 static touchPosition tPos;
 static circlePosition cPos;
 static accelVector aVec;
@@ -104,6 +105,14 @@ void hidExit(void)
 	}
 }
 
+void hidSetRepeatParameters(u32 delay, u32 interval)
+{
+	kDelay = delay;
+	kInterval = interval;
+	kCount = kDelay;
+	kRepeat = 0;
+}
+
 void hidWaitForEvent(HID_Event id, bool nextEvent)
 {
 	if(id>=HIDEVENT_MAX)return;
@@ -195,6 +204,21 @@ void hidScanInput(void)
 	kDown = (~kOld) & kHeld;
 	kUp = kOld & (~kHeld);
 
+	if (kDelay)
+	{
+		if (kHeld != kOld)
+		{
+			kCount = kDelay;
+			kRepeat = kDown;
+		}
+
+		if (--kCount == 0)
+		{
+			kCount = kInterval;
+			kRepeat = kHeld;
+		}
+	}
+
 	Id = hidSharedMem[66 + 4];//Accelerometer
 	if(Id>7)Id=7;
 	if(hidCheckSectionUpdateTime(&hidSharedMem[66], Id)==0)
@@ -220,6 +244,13 @@ u32 hidKeysDown(void)
 	return kDown;
 }
 
+u32 hidKeysDownRepeat(void)
+{
+	u32 tmp = kRepeat;
+	kRepeat = 0;
+	return tmp;
+}
+
 u32 hidKeysUp(void)
 {
 	return kUp;