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Snap turn implementation #12

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Snap turn implementation #12

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59 changes: 59 additions & 0 deletions scripts/camera.lua
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Original file line number Diff line number Diff line change
@@ -1,3 +1,26 @@
-------------------------
-- Snap turn variables --
-------------------------

-- To use, set to true
local snapTurnEnabled = false
local snapTurnDegrees = 15.0

-- Buffer for thumbstock x axis value
local thumbStickBuffer = 0.0

-- Has snap turn been triggered?
local snapTriggered = false

-- Time since last snap turn trigger
-- Used to debounce snap turn
local snapTimeDelta = 0.0

-------------------------
-- End snap turn --
-------------------------


local function find_required_object(name)
local obj = uevr.api:find_uobject(name)
if not obj then
Expand Down Expand Up @@ -1223,6 +1246,18 @@ local function on_level_changed(new_level)
end

uevr.sdk.callbacks.on_pre_engine_tick(function(engine, delta)

-- Snap turn debounce
if snapTriggered then
snapTimeDelta = snapTimeDelta + delta

-- 300ms timeout
if snapTimeDelta >= 0.3 then
snapTimeDelta = 0.0
snapTriggered = false
end
end

local viewport = engine.GameViewport

if viewport then
Expand Down Expand Up @@ -1747,6 +1782,21 @@ uevr.sdk.callbacks.on_post_calculate_stereo_view_offset(function(device, view_in

local hmdrot = hmd_component:K2_GetComponentRotation()
local rotdelta = hmdrot - last_rot

-- Snap turn implementation. Hijack HMD rotdelta
-- calculations to inject our own snap rotation
if snapTurnEnabled then
-- Handle right rotation
if thumbStickBuffer > 0.1 and snapTriggered == false then
rotdelta.y = rotdelta.y + snapTurnDegrees
snapTriggered = true
-- Handle left rotation
elseif thumbStickBuffer < -0.1 and snapTriggered == false then
rotdelta.y = rotdelta.y - snapTurnDegrees
snapTriggered = true
end
end

--local rotdelta = rotation - last_rot

-- Fix up the rotation delta
Expand Down Expand Up @@ -1876,6 +1926,15 @@ uevr.sdk.callbacks.on_xinput_get_state(function(retval, user_index, state)
if (state.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB) ~= 0 and (state.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB) == 0 then
state.Gamepad.wButtons = state.Gamepad.wButtons | XINPUT_GAMEPAD_BACK
end

-- Snap turn
if snapTurnEnabled then
thumbStickBuffer = state.Gamepad.sThumbRX

-- For snap, buffer value, then clear to ignore default action
state.Gamepad.sThumbRX = 0.0
end

end)

uevr.sdk.callbacks.on_script_reset(function()
Expand Down