[colobot] 16/377: Implemented force feedback
Didier Raboud
odyx at moszumanska.debian.org
Wed Mar 30 13:33:53 UTC 2016
This is an automated email from the git hooks/post-receive script.
odyx pushed a commit to branch debian/master
in repository colobot.
commit 6a6025f55783ad4b37a2f79f120a31208919177e
Author: krzys-h <krzys_h at interia.pl>
Date: Sun Sep 27 00:34:03 2015 +0200
Implemented force feedback
---
src/app/app.cpp | 43 ++++++++++++++++++++++++++++++++++++++++++
src/app/app.h | 5 +++++
src/graphics/engine/camera.cpp | 21 +++++++++++++++++++++
3 files changed, 69 insertions(+)
diff --git a/src/app/app.cpp b/src/app/app.cpp
index 502e60a..6186e9b 100644
--- a/src/app/app.cpp
+++ b/src/app/app.cpp
@@ -91,6 +91,8 @@ struct ApplicationPrivate
SDL_Joystick *joystick;
//! Id of joystick timer
SDL_TimerID joystickTimer;
+ //! Haptic subsystem for the joystick
+ SDL_Haptic *haptic;
ApplicationPrivate()
{
@@ -100,6 +102,7 @@ struct ApplicationPrivate
glcontext = nullptr;
joystick = nullptr;
joystickTimer = 0;
+ haptic = nullptr;
}
};
@@ -516,6 +519,10 @@ bool CApplication::Create()
{
GetLogger()->Warn("Joystick subsystem init failed\nJoystick(s) will not be available\n");
}
+ if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0)
+ {
+ GetLogger()->Warn("Joystick haptic subsystem init failed\nForce feedback will not be available\n");
+ }
if ((IMG_Init(IMG_INIT_PNG) & IMG_INIT_PNG) == 0)
{
@@ -725,6 +732,20 @@ bool CApplication::OpenJoystick()
// Create a timer for polling joystick state
m_private->joystickTimer = SDL_AddTimer(JOYSTICK_TIMER_INTERVAL, JoystickTimerCallback, nullptr);
+ // Initialize haptic subsystem
+ m_private->haptic = SDL_HapticOpenFromJoystick(m_private->joystick);
+ if (m_private->haptic == nullptr)
+ {
+ GetLogger()->Warn("Haptic subsystem open failed\n");
+ return true;
+ }
+
+ if (SDL_HapticRumbleInit(m_private->haptic) != 0)
+ {
+ GetLogger()->Warn("Haptic rumble effect init failed\n");
+ return true;
+ }
+
return true;
}
@@ -734,6 +755,11 @@ void CApplication::CloseJoystick()
GetLogger()->Info("Closing joystick\n");
+ StopForceFeedbackEffect();
+
+ SDL_HapticClose(m_private->haptic);
+ m_private->haptic = nullptr;
+
SDL_JoystickClose(m_private->joystick);
m_private->joystick = nullptr;
}
@@ -1784,3 +1810,20 @@ void CApplication::SetTextInput(bool textInputEnabled)
SDL_StopTextInput();
}
}
+
+void CApplication::PlayForceFeedbackEffect(float strength, int length)
+{
+ if (m_private->haptic == nullptr) return;
+
+ GetLogger()->Trace("Force feedback! length = %d ms, strength = %.2f\n", length, strength);
+ if (SDL_HapticRumblePlay(m_private->haptic, strength, length) != 0)
+ {
+ GetLogger()->Debug("Failed to play haptic effect\n");
+ }
+}
+
+void CApplication::StopForceFeedbackEffect()
+{
+ if (m_private->haptic == nullptr) return;
+ SDL_HapticRumbleStop(m_private->haptic);
+}
diff --git a/src/app/app.h b/src/app/app.h
index e829481..962bf30 100644
--- a/src/app/app.h
+++ b/src/app/app.h
@@ -314,6 +314,11 @@ public:
//! Renders the image in window if needed
void RenderIfNeeded(int updateRate);
+ //! Starts a force feedback effect on the joystick
+ void PlayForceFeedbackEffect(float strength = 1.0f, int length = 999999);
+ //! Stops a force feedback effect on the joystick
+ void StopForceFeedbackEffect();
+
protected:
//! Creates the window's SDL_Surface
bool CreateVideoSurface();
diff --git a/src/graphics/engine/camera.cpp b/src/graphics/engine/camera.cpp
index df92d6a..400b256 100644
--- a/src/graphics/engine/camera.cpp
+++ b/src/graphics/engine/camera.cpp
@@ -570,6 +570,8 @@ void CCamera::FlushEffect()
m_effectForce = 0.0f;
m_effectProgress = 0.0f;
m_effectOffset = Math::Vector(0.0f, 0.0f, 0.0f);
+
+ CApplication::GetInstancePointer()->StopForceFeedbackEffect();
}
void CCamera::StartEffect(CameraEffect effect, Math::Vector pos, float force)
@@ -655,6 +657,25 @@ void CCamera::EffectFrame(const Event &event)
force *= 1.0f-dist;
m_effectOffset *= force;
+ float forceFeedback = force;
+ if (m_effectType == CAM_EFFECT_VIBRATION)
+ {
+ forceFeedback *= 0.5f;
+ }
+ if (m_effectType == CAM_EFFECT_PET)
+ {
+ forceFeedback *= 0.75f;
+ }
+ if (m_effectType == CAM_EFFECT_EXPLO)
+ {
+ forceFeedback *= 3.0f;
+ }
+ if (forceFeedback > 1.0f) forceFeedback = 1.0f;
+ if (forceFeedback >= 0.1f)
+ {
+ CApplication::GetInstancePointer()->PlayForceFeedbackEffect(forceFeedback);
+ }
+
if (m_effectProgress >= 1.0f)
FlushEffect();
}
--
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