make joystick axes configurable

3 files changed, 87 insertions, 35 deletions

diff --git a/src/client/input.cc b/src/client/input.cc
index 790af91..87fa0b0 100644
--- a/src/client/input.cc
+++ b/src/client/input.cc
@@ -591,47 +591,65 @@ void key_released(Key *key)
 
 void axis_event(int axis, int value)
 {
-	// value is in range -32768 to 32767
-	switch (axis) {
-		case 0: // direction
-			if (value >= 0) {
-				local_direction = (float) value / 32767.0f;
-			} else {
-				local_direction = (float) value / 32768.0f;
-			}
+	float axis_direction = 0;
+	if (Joystick::input_axisdirection) {
+		axis_direction = truncf(Joystick::input_axisdirection->value());
+	}
 
-			local_direction	*= -1;
-			break;
+	float axis_pitch = 0;
+	if (Joystick::input_axispitch) {
+		axis_pitch = truncf(Joystick::input_axispitch->value());
+	}
 
-		case 1: // pitch
-			if (value >= 0) {
-				local_pitch = (float) value / 32767.0f;
-			} else {
-				local_pitch = (float) value / 32768.0f;
-			}
+	float axis_roll = 0;
+	if (Joystick::input_axisroll) {
+		axis_roll =  truncf(Joystick::input_axisroll->value());
+	}
+
+	float axis_throttle = 0;
+	if (Joystick::input_axisthrottle) {
+		axis_throttle = (int) truncf(Joystick::input_axisthrottle->value());
+	}
+	// value is in range -32768 to 32767
+	if (axis + 1 == math::absf(axis_direction)) {
+		
+		if (value >= 0) {
+			local_direction = (float) value / 32767.0f;
+		} else {
+			local_direction = (float) value / 32768.0f;
+		}
 
-			break;
+		local_direction *= math::sgnf(axis_direction) * -1.0f;
 
-		case 2: // roll
-			if (value >= 0) {
-				local_roll = (float) value / 32767.0f;
-			} else {
-				local_roll = (float) value / 32768.0f;
-			}
+	} else if (axis + 1 == math::absf(axis_pitch)) {
+		
+		if (value >= 0) {
+			local_pitch = (float) value / 32767.0f;
+		} else {
+			local_pitch = (float) value / 32768.0f;
+		}
+		local_pitch *= math::sgnf(axis_pitch);
 
-			local_roll	*= -1;
-			break;
+	} else if (axis + 1 == math::absf(axis_roll)) {
+		
+		if (value >= 0) {
+			local_roll = (float) value / 32767.0f;
+		} else {
+			local_roll = (float) value / 32768.0f;
+		}
+		local_roll *= math::sgnf(axis_roll) * -1.0f;
 
-		case 3: // throttle
-			if (value >= 0) {
-				local_thrust = (float) value / 32767.0f;
-			} else {
-				local_thrust = (float) value / 32768.0f;
-			}
+	} else if (axis + 1 == math::absf(axis_throttle)) {
+		
+		if (value >= 0) {
+			local_thrust = (float) value / 32767.0f;
+		} else {
+			local_thrust = (float) value / 32768.0f;
+		}
 
-			local_thrust = -0.5f * local_thrust + 0.5f;
+		local_thrust = -0.5f * local_thrust + 0.5f;
+		local_thrust *= math::sgnf(axis_throttle);
 	}
-
 }
 
 void reset()
diff --git a/src/client/joystick.cc b/src/client/joystick.cc
index c8f7f9d..0ea05a8 100644
--- a/src/client/joystick.cc
+++ b/src/client/joystick.cc
@@ -8,14 +8,24 @@
 
 #include "auxiliary/functions.h"
 #include "client/joystick.h"
-#include "core/cvar.h"
+
 #include "sys/sys.h"
 
 namespace client
 {
 
-core::Cvar *input_joystick = 0;
+// configured joystick number
+core::Cvar *Joystick::input_joystick = 0;
+
+// joystick axes
+core::Cvar *Joystick::input_axisdirection = 0;
+core::Cvar *Joystick::input_axispitch = 0;
+core::Cvar *Joystick::input_axisroll = 0;
+core::Cvar *Joystick::input_axisthrottle = 0;
+
+// current joystick number
 int current_joystick_number = 0;
+
 SDL_Joystick *current_joystick = 0;
 
 void Joystick::init()
@@ -40,6 +50,18 @@ void Joystick::init()
 	input_joystick = core::Cvar::get("input_joystick", 0.0f, core::Cvar::Archive);
 	input_joystick->set_info("[int] set joystick number to use");
 
+	input_axisdirection = core::Cvar::get("input_axisdirection", 1.0f, core::Cvar::Archive);
+	input_axisdirection->set_info("[int] joystick axis for direction control, 0 disables");
+	
+	input_axispitch = core::Cvar::get("input_axispitch", 2.0f, core::Cvar::Archive);
+	input_axispitch->set_info("[int] joystick axis for pitch control, 0 disables");
+	
+	input_axisroll = core::Cvar::get("input_axisroll", 3.0f, core::Cvar::Archive);
+	input_axisroll->set_info("[int] joystick axis for roll control, 0 disables");
+	
+	input_axisthrottle = core::Cvar::get("input_axisthrottle", 4.0f, core::Cvar::Archive);
+	input_axisthrottle->set_info("[int] joystick axis for throttle control, 0 disables");
+
 	current_joystick_number = 0;
 	SDL_JoystickEventState(SDL_IGNORE);
 }
diff --git a/src/client/joystick.h b/src/client/joystick.h
index 9b1925d..4695003 100644
--- a/src/client/joystick.h
+++ b/src/client/joystick.h
@@ -7,6 +7,8 @@
 #ifndef __INCLUDED_CLIENT_JOYSTICK_H__
 #define __INCLUDED_CLIENT_JOYSTICK_H__
 
+#include "core/cvar.h"
+
 namespace client
 {
 
@@ -22,6 +24,16 @@ public:
 	static void frame();
 
 	static bool is_enabled();
+
+	// configured joystick number
+	static core::Cvar *input_joystick;
+
+	// joystick axes
+	static core::Cvar *input_axisdirection;
+	static core::Cvar *input_axispitch;
+	static core::Cvar *input_axisroll;
+	static core::Cvar *input_axisthrottle;
+
 };
 
 }