active_device_switcher.py

import gremlin
from gremlin.user_plugin import *


# Plugin variables
mode = ModeVariable("Mode", "Mode in which to use these settings")
phys_axis1 = PhysicalInputVariable(
        "First physical axis",
        "First physical axis",
        [gremlin.common.InputType.JoystickAxis]
)

phys_axis2 = PhysicalInputVariable(
        "Second physical axis",
        "Second physical axis",
        [gremlin.common.InputType.JoystickAxis]
)

virt_axis = VirtualInputVariable(
        "vJoy output",
        "Virtual output axis",
        [gremlin.common.InputType.JoystickAxis]
)

threshold = FloatVariable(
        "Activity threshold",
        "Value above which an axis is considered as being used",
        0.0,
        0.0,
        1.0
)


# Decorators for the two physical axes
dec_1 = phys_axis1.create_decorator(mode.value)
dec_2 = phys_axis2.create_decorator(mode.value)


# State variables
g_active_index = -1
g_last_value = [0.0, 0.0]


def update_vjoy(vjoy, index, value):
    global g_active_index
    global g_last_value
    
    if g_active_index != index:
        delta = abs(value - g_last_value[index])
        if delta > threshold.value:
            g_active_index = index

    if g_active_index == index:
        vjoy[virt_axis.vjoy_id].axis(virt_axis.input_id).value = value
        g_last_value[index] = value


@dec_1.axis(phys_axis1.input_id)
def axis1_cb(event, vjoy):
    update_vjoy(vjoy, 0, event.value)


@dec_2.axis(phys_axis2.input_id)
def axis2_cb(event, vjoy):
    update_vjoy(vjoy, 1, event.value)