4 files changed, 39 insertions, 15 deletions
diff --git a/platform/ios/ios.h b/platform/ios/ios.h
index d488cde257..cb5be64cee 100644
--- a/platform/ios/ios.h
+++ b/platform/ios/ios.h
@@ -51,7 +51,7 @@ public:
 	static void alert(const char *p_alert, const char *p_title);
 
 	bool supports_haptic_engine();
-	void vibrate_haptic_engine(float p_duration_seconds);
+	void vibrate_haptic_engine(float p_duration_seconds, float p_amplitude);
 
 	String get_model() const;
 	String get_rate_url(int p_app_id) const;
diff --git a/platform/ios/ios.mm b/platform/ios/ios.mm
index 0a2e1fd5cd..6943de5ac8 100644
--- a/platform/ios/ios.mm
+++ b/platform/ios/ios.mm
@@ -69,21 +69,41 @@ CHHapticEngine *iOS::get_haptic_engine_instance() API_AVAILABLE(ios(13)) {
 	return haptic_engine;
 }
 
-void iOS::vibrate_haptic_engine(float p_duration_seconds) API_AVAILABLE(ios(13)) {
+void iOS::vibrate_haptic_engine(float p_duration_seconds, float p_amplitude) API_AVAILABLE(ios(13)) {
 	if (@available(iOS 13, *)) { // We need the @available check every time to make the compiler happy...
 		if (supports_haptic_engine()) {
 			CHHapticEngine *cur_haptic_engine = get_haptic_engine_instance();
 			if (cur_haptic_engine) {
-				NSDictionary *hapticDict = @{
-					CHHapticPatternKeyPattern : @[
-						@{CHHapticPatternKeyEvent : @{
-							CHHapticPatternKeyEventType : CHHapticEventTypeHapticContinuous,
-							CHHapticPatternKeyTime : @(CHHapticTimeImmediate),
-							CHHapticPatternKeyEventDuration : @(p_duration_seconds)
-						},
-						},
-					],
-				};
+				NSDictionary *hapticDict;
+				if (p_amplitude < 0) {
+					hapticDict = @{
+						CHHapticPatternKeyPattern : @[
+							@{CHHapticPatternKeyEvent : @{
+								CHHapticPatternKeyEventType : CHHapticEventTypeHapticContinuous,
+								CHHapticPatternKeyTime : @(CHHapticTimeImmediate),
+								CHHapticPatternKeyEventDuration : @(p_duration_seconds),
+							},
+							},
+						],
+					};
+				} else {
+					hapticDict = @{
+						CHHapticPatternKeyPattern : @[
+							@{CHHapticPatternKeyEvent : @{
+								CHHapticPatternKeyEventType : CHHapticEventTypeHapticContinuous,
+								CHHapticPatternKeyTime : @(CHHapticTimeImmediate),
+								CHHapticPatternKeyEventDuration : @(p_duration_seconds),
+								CHHapticPatternKeyEventParameters : @[
+									@{
+										CHHapticPatternKeyParameterID : @("HapticIntensity"),
+										CHHapticPatternKeyParameterValue : @(p_amplitude)
+									},
+								],
+							},
+							},
+						],
+					};
+				}
 
 				NSError *error;
 				CHHapticPattern *pattern = [[CHHapticPattern alloc] initWithDictionary:hapticDict error:&error];
diff --git a/platform/ios/os_ios.h b/platform/ios/os_ios.h
index c4782a4768..b7c5a73065 100644
--- a/platform/ios/os_ios.h
+++ b/platform/ios/os_ios.h
@@ -123,7 +123,7 @@ public:
 	virtual String get_unique_id() const override;
 	virtual String get_processor_name() const override;
 
-	virtual void vibrate_handheld(int p_duration_ms = 500) override;
+	virtual void vibrate_handheld(int p_duration_ms = 500, float p_amplitude = -1.0) override;
 
 	virtual bool _check_internal_feature_support(const String &p_feature) override;
 
diff --git a/platform/ios/os_ios.mm b/platform/ios/os_ios.mm
index 52d496d641..35b87ea647 100644
--- a/platform/ios/os_ios.mm
+++ b/platform/ios/os_ios.mm
@@ -571,9 +571,13 @@ String OS_IOS::get_system_font_path(const String &p_font_name, int p_weight, int
 	return ret;
 }
 
-void OS_IOS::vibrate_handheld(int p_duration_ms) {
+void OS_IOS::vibrate_handheld(int p_duration_ms, float p_amplitude) {
 	if (ios->supports_haptic_engine()) {
-		ios->vibrate_haptic_engine((float)p_duration_ms / 1000.f);
+		if (p_amplitude > 0.0) {
+			p_amplitude = CLAMP(p_amplitude, 0.0, 1.0);
+		}
+
+		ios->vibrate_haptic_engine((float)p_duration_ms / 1000.f, p_amplitude);
 	} else {
 		// iOS <13 does not support duration for vibration
 		AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);