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- Minor adjustments to SDL joystick code so that all axes have at least a small deadzone so that button mapping works properly.

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This commit is contained in:
Braden Obrzut 2014-01-18 17:54:46 -05:00
parent 27f6b3c9f3
commit 811a75ebf6
1 changed files with 8 additions and 4 deletions
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12
src/sdl/i_joystick.cpp
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@ -1,8 +1,12 @@
#include <SDL_joystick.h> #include <SDL_joystick.h>
#include "doomdef.h" #include "doomdef.h"
#include "templates.h"
#include "m_joy.h" #include "m_joy.h"
// Very small deadzone so that floating point magic doesn't happen
#define MIN_DEADZONE 0.000001f
class SDLInputJoystick: public IJoystickConfig class SDLInputJoystick: public IJoystickConfig
{ {
public: public:
@ -65,7 +69,7 @@ public:
void SetAxisDeadZone(int axis, float zone) void SetAxisDeadZone(int axis, float zone)
{ {
Axes[axis].DeadZone = zone; Axes[axis].DeadZone = clamp(zone, MIN_DEADZONE, 1.f);
} }
void SetAxisMap(int axis, EJoyAxis gameaxis) void SetAxisMap(int axis, EJoyAxis gameaxis)
{ {
@ -83,7 +87,7 @@ public:
} }
bool IsAxisDeadZoneDefault(int axis) bool IsAxisDeadZoneDefault(int axis)
{ {
return Axes[axis].DeadZone == 0.0f; return Axes[axis].DeadZone <= MIN_DEADZONE;
} }
bool IsAxisMapDefault(int axis) bool IsAxisMapDefault(int axis)
{ {
@ -105,7 +109,7 @@ public:
info.Name.Format("Axis %d", i+1); info.Name.Format("Axis %d", i+1);
else else
info.Name.Format("Hat %d (%c)", (i-NumAxes)/2 + 1, (i-NumAxes)%2 == 0 ? 'x' : 'y'); info.Name.Format("Hat %d (%c)", (i-NumAxes)/2 + 1, (i-NumAxes)%2 == 0 ? 'x' : 'y');
info.DeadZone = 0.0f; info.DeadZone = MIN_DEADZONE;
info.Multiplier = 1.0f; info.Multiplier = 1.0f;
info.Value = 0.0; info.Value = 0.0;
info.ButtonValue = 0; info.ButtonValue = 0;
@ -141,7 +145,7 @@ public:
{ {
buttonstate = 0; buttonstate = 0;
Axes[i].Value = SDL_JoystickGetAxis(Device, i)/32768.0; Axes[i].Value = SDL_JoystickGetAxis(Device, i)/32767.0;
Axes[i].Value = Joy_RemoveDeadZone(Axes[i].Value, Axes[i].DeadZone, &buttonstate); Axes[i].Value = Joy_RemoveDeadZone(Axes[i].Value, Axes[i].DeadZone, &buttonstate);
// Map button to axis // Map button to axis