From 76d5a0e72332e0ce83bab3097d38b1f4f6780550 Mon Sep 17 00:00:00 2001
From: John Watson <john@glowmatic.net>
Date: Mon, 4 Sep 2023 18:02:43 -0700
Subject: [PATCH] Android: Fix joypad trigger value range

`Input::joy_axis` converts trigger values to be between 0.0f to 1.0f by default. This is not needed for Android, as values are already within that range, as per Android documentation: https://developer.android.com/reference/android/view/MotionEvent#AXIS_RTRIGGER

This patch prevents this conversion on Android, which caused L2 and R2 triggers to get stuck pressed. https://github.com/godotengine/godot/issues/79263

(cherry picked from commit d413a0207923bfa4b753f088af1245d97ef08ec3)
---
 core/input/input.cpp | 8 +++++---
 core/input/input.h   | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/core/input/input.cpp b/core/input/input.cpp
index 0e691aaec7f..b15a347e65e 100644
--- a/core/input/input.cpp
+++ b/core/input/input.cpp
@@ -1060,7 +1060,8 @@ void Input::joy_axis(int p_device, JoyAxis p_axis, float p_value) {
 		return;
 	}
 
-	JoyEvent map = _get_mapped_axis_event(map_db[joy.mapping], p_axis, p_value);
+	JoyAxisRange range;
+	JoyEvent map = _get_mapped_axis_event(map_db[joy.mapping], p_axis, p_value, range);
 
 	if (map.type == TYPE_BUTTON) {
 		bool pressed = map.value > 0.5;
@@ -1100,7 +1101,7 @@ void Input::joy_axis(int p_device, JoyAxis p_axis, float p_value) {
 	if (map.type == TYPE_AXIS) {
 		JoyAxis axis = JoyAxis(map.index);
 		float value = map.value;
-		if (axis == JoyAxis::TRIGGER_LEFT || axis == JoyAxis::TRIGGER_RIGHT) {
+		if (range == FULL_AXIS && (axis == JoyAxis::TRIGGER_LEFT || axis == JoyAxis::TRIGGER_RIGHT)) {
 			// Convert to a value between 0.0f and 1.0f.
 			value = 0.5f + value / 2.0f;
 		}
@@ -1206,7 +1207,7 @@ Input::JoyEvent Input::_get_mapped_button_event(const JoyDeviceMapping &mapping,
 	return event;
 }
 
-Input::JoyEvent Input::_get_mapped_axis_event(const JoyDeviceMapping &mapping, JoyAxis p_axis, float p_value) {
+Input::JoyEvent Input::_get_mapped_axis_event(const JoyDeviceMapping &mapping, JoyAxis p_axis, float p_value, JoyAxisRange &r_range) {
 	JoyEvent event;
 
 	for (int i = 0; i < mapping.bindings.size(); i++) {
@@ -1252,6 +1253,7 @@ Input::JoyEvent Input::_get_mapped_axis_event(const JoyDeviceMapping &mapping, J
 					case TYPE_AXIS:
 						event.index = (int)binding.output.axis.axis;
 						event.value = value;
+						r_range = binding.output.axis.range;
 						if (binding.output.axis.range != binding.input.axis.range) {
 							switch (binding.output.axis.range) {
 								case POSITIVE_HALF_AXIS:
diff --git a/core/input/input.h b/core/input/input.h
index ec16871b728..92cf921030a 100644
--- a/core/input/input.h
+++ b/core/input/input.h
@@ -219,7 +219,7 @@ private:
 	Vector<JoyDeviceMapping> map_db;
 
 	JoyEvent _get_mapped_button_event(const JoyDeviceMapping &mapping, JoyButton p_button);
-	JoyEvent _get_mapped_axis_event(const JoyDeviceMapping &mapping, JoyAxis p_axis, float p_value);
+	JoyEvent _get_mapped_axis_event(const JoyDeviceMapping &mapping, JoyAxis p_axis, float p_value, JoyAxisRange &r_range);
 	void _get_mapped_hat_events(const JoyDeviceMapping &mapping, HatDir p_hat, JoyEvent r_events[(size_t)HatDir::MAX]);
 	JoyButton _get_output_button(String output);
 	JoyAxis _get_output_axis(String output);