fix: use infinite duration for constant/damper/inertia effects (Boomslangnz#103)

Effects with configFeedbackLength (120ms default) expired between game
loop triggers when the game state didn't change frequently enough.
The T500RS and other wheels that strictly respect SDL effect durations
would go limp during sustained forces (e.g. long turns).

Using SDL_HAPTIC_INFINITY keeps effects active until the next update
or explicit stop, matching the pattern already used for Spring effects.

Author: privaloops

DllMain.cpp

@@ -1342,7 +1342,7 @@ void TriggerConstantEffect(int direction, double strength)
 	tempEffect.type = SDL_HAPTIC_CONSTANT;
 	tempEffect.constant.direction.type = SDL_HAPTIC_CARTESIAN;
 	tempEffect.constant.direction.dir[0] = direction;
-	tempEffect.constant.length = configFeedbackLength;
+	tempEffect.constant.length = SDL_HAPTIC_INFINITY;
 	tempEffect.constant.delay = 0;
 
 	int confMinForce = configMinForce;
@@ -1435,7 +1435,7 @@ void TriggerInertiaEffect(double strength)
 	tempEffect.condition.type = SDL_HAPTIC_INERTIA;
 	tempEffect.condition.direction.type = SDL_HAPTIC_CARTESIAN;
 	tempEffect.condition.delay = 0;
-	tempEffect.condition.length = configFeedbackLength;
+	tempEffect.condition.length = SDL_HAPTIC_INFINITY;
 	tempEffect.condition.direction.dir[0] = 1;
 	tempEffect.condition.direction.dir[1] = 1; //Y Position
 	SHORT minForce = (SHORT)(strength > 0.001 ? (configMinForce / 100.0 * 32767.0) : 0); // strength is a double so we do an epsilon check of 0.001 instead of > 0.
@@ -1520,7 +1520,7 @@ void TriggerDamperEffect(double strength)
 	tempEffect.condition.type = SDL_HAPTIC_DAMPER;
 	tempEffect.condition.direction.type = SDL_HAPTIC_CARTESIAN;
 	tempEffect.condition.delay = 0;
-	tempEffect.condition.length = configFeedbackLength;
+	tempEffect.condition.length = SDL_HAPTIC_INFINITY;
 	tempEffect.condition.direction.dir[0] = 1; // not used
 	tempEffect.condition.direction.dir[1] = 0; //Y Position
 	SHORT minForce = (SHORT)(strength > 0.001 ? (configMinForce / 100.0 * 32767.0) : 0); // strength is a double so we do an epsilon check of 0.001 instead of > 0.