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local FORCE_WIND_VELOCITY_UPDATE = true
local UI_WIDTH, UI_HEIGHT = 1920, 1080
local UI_CENTER_X, UI_CENTER_Y = UI_WIDTH * 0.5, UI_HEIGHT * 0.5
-- minR, maxR, minG, maxG, minB, maxB, minA, maxA
local LEAF_COLORS =
{
}
local LEAF_ANCHOR_CONTROLS =
{
BACKGROUND = 1,
TREES_LEFT = 2,
TREES_RIGHT = 3,
}
local LEAF_ANCHOR_CONTROL_REFS = {}
-- minForwardX, maxForwardX, minForwardY, maxForwardY
anchorTo = LEAF_ANCHOR_CONTROLS.TREES_LEFT,
anchorPoint = TOPRIGHT,
drawLevel = 100,
forwardRotationAngleCoefficient = 1,
forwardVectorRange = LEAF_FORWARD_VECTOR_RIGHT,
-- minX, maxX, minY, maxX, minNormalizedZ, maxNormalizedZ
}, 300),
anchorTo = LEAF_ANCHOR_CONTROLS.TREES_RIGHT,
anchorPoint = TOPRIGHT,
drawLevel = 325, -- On top of the front right tree
forwardRotationAngleCoefficient = 1,
forwardVectorRange = LEAF_FORWARD_VECTOR_LEFT,
positionRanges = ZO_WeightedVectorRanges:New(ZO_VectorRange:New(1880 - UI_WIDTH, 1970 - UI_WIDTH, 0, 40, 0.75, 1)),
}, 100),
anchorTo = LEAF_ANCHOR_CONTROLS.TREES_RIGHT,
anchorPoint = TOPRIGHT,
drawLevel = 265, -- On top of the left and back right trees
forwardRotationAngleCoefficient = 1,
forwardVectorRange = LEAF_FORWARD_VECTOR_LEFT,
positionRanges = ZO_WeightedVectorRanges:New(ZO_VectorRange:New(1340 - UI_WIDTH, 1520 - UI_WIDTH, 0, 75, 0.5, 0.75)),
}, 100),
anchorTo = LEAF_ANCHOR_CONTROLS.BACKGROUND,
anchorPoint = TOP,
drawLevel = 275, -- On top of the left and back right trees
forwardRotationAngleCoefficient = 1,
forwardVectorRange = LEAF_FORWARD_VECTOR_LEFT,
positionRanges = ZO_WeightedVectorRanges:New(ZO_VectorRange:New(1320 - UI_CENTER_X, 1400 - UI_CENTER_X, 150, 200, 0.25, 0.5)),
}, 80),
anchorTo = LEAF_ANCHOR_CONTROLS.BACKGROUND,
anchorPoint = TOP,
drawLevel = 285, -- On top of the left and back right trees
forwardRotationAngleCoefficient = 0.1,
forwardVectorRange = LEAF_FORWARD_VECTOR_RIGHT_STRONG,
positionRanges = ZO_WeightedVectorRanges:New(ZO_VectorRange:New(1300 - UI_CENTER_X, 1375 - UI_CENTER_X, 350, 375, 0.0, 0.25)),
}, 50),
anchorTo = LEAF_ANCHOR_CONTROLS.BACKGROUND,
anchorPoint = TOP,
drawLevel = 4000, -- On top of all other elements.
forwardRotationAngleCoefficient = 0.25,
forwardVectorRange = LEAF_FORWARD_VECTOR_DOWN_RIGHT,
}, 30),
anchorTo = LEAF_ANCHOR_CONTROLS.BACKGROUND,
anchorPoint = TOP,
drawLevel = 4010, -- On top of all other elements.
forwardRotationAngleCoefficient = 0.25,
forwardVectorRange = LEAF_FORWARD_VECTOR_DOWN_LEFT,
}, 30))
-- Custom parameter definitions
-- CreateBackgroundParameter* arguments: parameterKey, defaultValue, minValue, maxValue, formatString
CreateBackgroundParameterFloat("ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_FADE_IN_INTERVAL_SECONDS", 2, 0.01, 60, "%.2f seconds")
CreateBackgroundParameterInteger("ZO_BACKGROUND_WIND_UPDATE_INTERVAL_MAX_SECONDS", 16, 1, 60, "%d seconds")
CreateBackgroundParameterInteger("ZO_BACKGROUND_WIND_UPDATE_INTERVAL_MIN_SECONDS", 3, 1, 60, "%d seconds")
CreateBackgroundParameterFloat("ZO_BACKGROUND_WIND_VELOCITY_OVERRIDE_TRANSITION_INTERVAL_SECONDS", 0.1, 0, 5, "%.1f seconds")
-- [ Required ]
-- After defining the parameters, the global table -must- be
-- updated with the current/calculated parameter values.
-- Pregame Animated Background
-- Override Method Implementations
self.titleFadeInTimeline = ANIMATION_MANAGER:CreateTimelineFromVirtual("ZO_PeninsulaBackgroundAnimation_TitleFadeIn", self.control)
self.sunRaysFadeInTimeline = ANIMATION_MANAGER:CreateTimelineFromVirtual("ZO_PeninsulaBackgroundAnimation_SunRaysFadeIn", self.control)
end
-- Order matters
end
-- Order matters
end
return false
end
return true
end
end
self.ouroborosGlowTexture:SetTextureSampleProcessingWeight(TEX_SAMPLE_PROCESSING_RGB, ZO_BACKGROUND_OUROBOROS_GLOW_RGB_WEIGHT_MIN)
self.sunRaysTexture:SetVertexColors(VERTEX_POINTS_BOTTOMLEFT + VERTEX_POINTS_BOTTOMRIGHT, 1, 1, 1, 0)
FLICKER_EFFECT:RegisterControl(self.ouroborosGlowTexture, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_SPEED, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_ALPHA_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_COLOR_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_BLUR_FACTOR_MAX, OUROBOROS_GLOW_COLOR)
end
-- Suppress the default behavior of ZO_BaseBackground.OnIntroAnimationStop.
-- This background class manages the visibility of the ouroboros and title manually.
self.backgroundTexture:SetMaskThresholdZeroAlphaEdge(-self.backgroundTexture:GetMaskThresholdThickness())
end
-- Suppress the default behavior of ZO_BaseBackground.OnIntroAnimationUpdate.
-- Masked fade in Background, Terrain and Trees.
local backgroundMaskThreshold = zo_lerp(1, -self.backgroundTexture:GetMaskThresholdThickness(), progress)
-- Fade in Tree Silhouettes.
-- Transition Background from the Gold Road color to full color.
do
end
end
if frameTimeS <= 0 then
return
end
-- Animate leaf particles.
-- Determine whether the left mouse button or left stick is, or was, engaged.
-- Interpolate the interaction coefficient to 1 while engaged; otherwise to 0.
local interactionCoefficientChanged = false
if interactionCoefficient < 1 and (self.mouseDownX or self.movementControllerVectorX ~= 0 or self.movementControllerVectorY ~= 0) then
interactionCoefficientChanged = true
interactionCoefficientChanged = true
end
-- Update audible wind intensity and direction.
local windIntensityFromMagnitude = zo_lerp(0, 0.5, self.windMagnitude / ZO_BACKGROUND_WIND_MOUSE_VELOCITY_COEFFICIENT)
-- Clamp to [0, 1]
self.audioWindIntensity = zo_clamp(windIntensityFromInteractionDuration + windIntensityFromMagnitude, 0, 1)
local windDirectionX, windDirectionY
-- Normalize from [-1, 1] to [0, 1]
else
-- Normalize to [0, 1]
end
SetPregameAnimatedBackgroundWindState(self.audioWindIntensity, self.audioWindDirectionX, self.audioWindDirectionY)
if interactionCoefficientChanged then
-- Left mouse button or left stick is, or was, engaged;
-- apply the interpolated wind and ouroboros glow visual states.
-- Simulate wind by increasing the tree wave speed.
self.treeWaveSpeedCoefficient = zo_lerp(ZO_BACKGROUND_TREES_WAVE_SPEED_COEFFICIENT_BASE, ZO_BACKGROUND_WIND_MOUSE_TREE_WAVE_SPEED_COEFFICIENT, interactionCoefficient)
-- Increase ouroboros glow intensity.
self.ouroborosGlowStrength = zo_lerp(ZO_BACKGROUND_OUROBOROS_GLOW_RGB_WEIGHT_MIN, ZO_BACKGROUND_OUROBOROS_GLOW_RGB_WEIGHT_MAX, ouroborosCoefficient)
self.ouroborosGlowTexture:SetTextureSampleProcessingWeight(TEX_SAMPLE_PROCESSING_RGB, self.ouroborosGlowStrength)
-- Reduce flicker strength.
do
local alphaFlickerStrength = zo_lerp(ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_ALPHA_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_ALPHA_STRENGTH * 0.5, easedOuroborosCoefficient)
local colorFlickerStrength = zo_lerp(ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_COLOR_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_COLOR_STRENGTH * 0.5, easedOuroborosCoefficient)
FLICKER_EFFECT:SetAlphaAndColorFlickerStrength(self.ouroborosGlowTexture, alphaFlickerStrength, colorFlickerStrength)
end
-- Change ouroboros glow to amber.
OUROBOROS_GLOW_COLOR:SetLerpRGB(OUROBOROS_GLOW_COLOR_BASE, OUROBOROS_GLOW_COLOR_INTENSE, ouroborosCoefficient)
end
end
-- Fade in key elements.
if fadeInProgress < 10 then
fadeInProgress = fadeInProgress * fadeInProgress
end
-- Manipulate the vertex UV coordinates to simulate waving of the
-- tree elements as this produces a more convincing visual effect
-- than the wave shader effect.
local OFFSET_X_MAX = ZO_BACKGROUND_TREES_WAVE_OFFSET_X_MAX
local OFFSET_Y_MAX = ZO_BACKGROUND_TREES_WAVE_OFFSET_Y_MAX
-- Front left tree wave.
local u1 = (distribution1 * sin1 + (1 - distribution1) * sin2) * OFFSET_X_MAX
local v1 = cos1 * OFFSET_Y_MAX
do
local u, v = u1 * 0.2, v1 * 0.2 + OFFSET_Y_MAX
end
do
local u, v = 1 + u1, v1 + OFFSET_Y_MAX
end
-- Back right tree wave.
local u2 = (0.5 * sin1 + 0.5 * sin2) * OFFSET_X_MAX
local v2 = 0
do
local u, v = u2, v2
end
do
local v = cos2 * OFFSET_Y_MAX + OFFSET_Y_MAX
end
-- Front right tree wave.
local u3 = (distribution2 * sin2 + (1 - distribution2) * sin1) * OFFSET_X_MAX
local v3 = (distribution2 * cos1 + (1 - distribution2) * cos2) * OFFSET_Y_MAX
do
local u, v = u3, v3 + OFFSET_Y_MAX
end
do
local u, v = 1 + u3 * 0.2, v3 * 0.1 + OFFSET_Y_MAX
end
end
-- Class-Specific Methods
self.leafTexturePool = ZO_ControlPool:New("ZO_PeninsulaBackgroundLeaf", self.control, "BackgroundLeaf")
self.leafTexturePool:SetCustomAcquireBehavior(ZO_GetCallbackForwardingFunction(self, self.OnLeafTextureAcquired))
self.leafTexturePool:SetCustomFactoryBehavior(ZO_GetCallbackForwardingFunction(self, self.OnLeafTextureCreated))
end
return movementController
end
{
[MOVEMENT_CONTROLLER_DIRECTION_HORIZONTAL] = CreateMovementController(MOVEMENT_CONTROLLER_DIRECTION_HORIZONTAL),
[MOVEMENT_CONTROLLER_DIRECTION_VERTICAL] = CreateMovementController(MOVEMENT_CONTROLLER_DIRECTION_VERTICAL),
}
end
end
end
end
end
end
local normalizedTransitionIntervalElapsed = transitionIntervalElapsedS > 0 and (transitionIntervalElapsedS / self.windVelocityTransitionIntervalS) or 0
return normalizedTransitionIntervalElapsed
end
-- Choose a leaf spawner randomly.
-- Initial position.
control:SetAnchor(control.anchorPoint, control.anchorToControl, control.anchorPoint, self:GetScaledAnchorOffsets(startX, startY))
-- Draw level.
-- Color and scale.
-- Forward vector.
-- Rotation angle.
local forwardRotationAngleCoefficient = leafSpawner.forwardRotationAngleCoefficient
control.startForwardRotationAngle = zo_lerp(ZO_BACKGROUND_LEAF_FORWARD_ROTATION_ANGLE_MIN, ZO_BACKGROUND_LEAF_FORWARD_ROTATION_ANGLE_MAX, zo_random()) * forwardRotationAngleCoefficient
control.endForwardRotationAngle = -zo_sign(control.startForwardRotationAngle) * ZO_BACKGROUND_LEAF_FORWARD_ROTATION_ANGLE_MAX * zo_random() * forwardRotationAngleCoefficient
-- Rotation velocity.
control.rotationVelocityY = zo_lerp(ZO_BACKGROUND_LEAF_ROTATION_VELOCITY_MIN, ZO_BACKGROUND_LEAF_ROTATION_VELOCITY_MAX, zo_random()) * forwardRotationAngleCoefficient
control.rotationVelocityZ = zo_lerp(ZO_BACKGROUND_LEAF_ROTATION_VELOCITY_MIN, ZO_BACKGROUND_LEAF_ROTATION_VELOCITY_MAX, zo_random()) * forwardRotationAngleCoefficient
end
-- Apply the current screen scale to the new leaf control.
end
-- Start wind velocity override.
end
end
-- Stop wind velocity override.
-- Force the generation of a new wind velocity.
end
end
-- Initialize Title.
local START_PROGRESS = 0
if not completed then
-- Initialize Ouroboros Glow flicker.
FLICKER_EFFECT:RegisterControl(self.ouroborosGlowTexture, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_SPEED, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_ALPHA_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_COLOR_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_BLUR_FACTOR_MAX, OUROBOROS_GLOW_COLOR)
end
end
end
-- Title blur in.
local blurOriginX, blurOriginY, numSamples, blurRadius, offsetRadius = self.titleTexture:GetRadialBlur()
-- Title fade in.
end
if not completed then
-- Initialize Ouroboros.
-- Initialize Sun Rays.
self.sunRaysTexture:SetVertexColors(VERTEX_POINTS_BOTTOMLEFT + VERTEX_POINTS_BOTTOMRIGHT, 1, 1, 1, 0)
end
end
do
-- Slight scaling in of the Ouroboros.
local ANGLE = 0
local ORIGIN_X, ORIGIN_Y = 0.5, 0.5
end
do
-- Fade in Ouroboros with darker shading initially for higher contrast
-- during the initial sun ray burst.
local alpha = easedProgress
end
do
-- Ouroboros glow fade in and/or flicker setting sync for the dev tool.
-- Note that the fade in interval's overflow time interval is to ensure
-- that the max alpha is ultimately applied to the flicker effect.
FLICKER_EFFECT:RegisterControl(self.ouroborosGlowTexture, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_SPEED, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_ALPHA_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_FLICKER_COLOR_STRENGTH, ZO_BACKGROUND_OUROBOROS_GLOW_BLUR_FACTOR_MAX, OUROBOROS_GLOW_COLOR)
end
do
-- Fade in sun rays.
local sunRaysAlpha
if progress <= 0.5 then
else
end
self.sunRaysTexture:SetVertexColors(VERTEX_POINTS_BOTTOMLEFT + VERTEX_POINTS_BOTTOMRIGHT, 1, 1, 1, sunRaysAlpha)
self.sunRaysTexture:SetVertexColors(VERTEX_POINTS_TOPLEFT + VERTEX_POINTS_TOPRIGHT, 1, 1, 1, sunRaysAlpha)
end
end
self.sunRaysTexture:SetVertexColors(VERTEX_POINTS_BOTTOMLEFT + VERTEX_POINTS_BOTTOMRIGHT, 1, 1, 1, 0)
end
if not overrideTransitionIntervalS then
-- The previous transition did not complete; interpolate the new "previous"
-- wind velocity between the current the current and previous velocities.
local normalizedTransitionIntervalElapsed = ZO_EaseOutQuadratic(transitionIntervalElapsedS / self.windVelocityTransitionIntervalS)
self.previousWindVelocityX = zo_lerp(self.previousWindVelocityX, self.windVelocityX, normalizedTransitionIntervalElapsed)
self.previousWindVelocityY = zo_lerp(self.previousWindVelocityY, self.windVelocityY, normalizedTransitionIntervalElapsed)
end
else
-- Transfer the current wind velocity to the previous wind velocity.
end
self.windVelocityTransitionIntervalS = overrideTransitionIntervalS or ZO_BACKGROUND_WIND_TRANSITION_INTERVAL_SECONDS
self.nextWindVelocityUpdateS = frameTimeS + zo_random(ZO_BACKGROUND_WIND_UPDATE_INTERVAL_MIN_SECONDS, ZO_BACKGROUND_WIND_UPDATE_INTERVAL_MAX_SECONDS, zo_random())
end
if nextSpawnTimeS <= frameTimeS then
-- Spawn a new leaf.
leafControl.startTimeS = frameTimeS
end
-- Queue the next leaf spawn.
local intervalCoefficient = (self.mouseDownX or self.movementControllerVectorX ~= 0 or self.movementControllerVectorY ~= 0) and 0.35 or 1
self.nextLeafSpawnTimeS = frameTimeS + (intervalCoefficient * zo_lerp(ZO_BACKGROUND_LEAF_SPAWN_INTERVAL_MIN_SECONDS, ZO_BACKGROUND_LEAF_SPAWN_INTERVAL_MAX_SECONDS, zo_random()))
end
end
local hasMovement = false
-- Interpolate toward -1 or 1 when the left stick is moved left or right respectively;
-- otherwise interpolate toward 0, at a slower rate, when disengaged.
local horizontalMovement = self.movementControllers[MOVEMENT_CONTROLLER_DIRECTION_HORIZONTAL]:CheckMovement()
if horizontalMovement == MOVEMENT_CONTROLLER_MOVE_PREVIOUS then
hasMovement = true
elseif horizontalMovement == MOVEMENT_CONTROLLER_MOVE_NEXT then
hasMovement = true
else
end
-- Interpolate toward -1 or 1 when the left stick is moved up or down respectively;
-- otherwise interpolate toward 0, at a slower rate, when disengaged.
local verticalMovement = self.movementControllers[MOVEMENT_CONTROLLER_DIRECTION_VERTICAL]:CheckMovement()
if verticalMovement == MOVEMENT_CONTROLLER_MOVE_PREVIOUS then
hasMovement = true
elseif verticalMovement == MOVEMENT_CONTROLLER_MOVE_NEXT then
hasMovement = true
else
end
if hasMovement then
-- Track the last time that left stick movement was detected.
-- The left stick was, but is no longer, engaged.
-- The left stick has remained idle; force the generation
-- of a new wind velocity and vector.
end
end
end
local minX, minY = -guiWidth, -guiHeight
local maxX, maxY = guiWidth * 2, guiHeight
-- Update wind velocity and calculate the wind vector for this frame.
local normalizedWindVelocity = zo_distance(0, 0, self.windVectorX, self.windVectorY) / ZO_BACKGROUND_WIND_MOUSE_VELOCITY_COEFFICIENT
local normalizedWindCoefficient = 1 + normalizedWindVelocity
-- Spawn new leaf particles; then update all leaf particle animations.
local maxBrightness = ZO_BACKGROUND_LEAF_BRIGHTNESS_MAX
local minBrightness = ZO_BACKGROUND_LEAF_BRIGHTNESS_MIN
local gravityX, gravityY = ZO_BACKGROUND_LEAF_GRAVITY_VECTOR_X, ZO_BACKGROUND_LEAF_GRAVITY_VECTOR_Y
local minForwardY = gravityY * -0.5
local textureReleaseQueue = nil
-- Calculate translated position and determine whether this leaf
-- has traveled out of bounds.
local releaseControl = false
local translationX, translationY
local positionX, positionY
translationY = (gravityY + (zo_max(minForwardY, control.forwardY) * normalizedWindCoefficient) + (windVectorY * windFactor)) * frameDeltaS
if positionY > maxY or positionY < minY then
releaseControl = true
else
translationX = (gravityX + (control.forwardX * normalizedWindCoefficient) + (windVectorX * windFactor)) * frameDeltaS
if positionX > maxX or positionX < minX then
releaseControl = true
end
end
if releaseControl then
-- This leaf has moved out of bounds; queue the control
-- for release from the pool.
if textureReleaseQueue then
else
end
else
-- Apply alpha.
-- Move this texture control to its new position.
control:SetAnchor(control.anchorPoint, control.anchorToControl, control.anchorPoint, self:GetScaledAnchorOffsets(control.positionX, control.positionY))
-- Apply forward vector rotation.
local forwardRotationAngle = zo_lerp(control.startForwardRotationAngle, control.endForwardRotationAngle, lifetimeInterpolant) * frameDeltaS
control.forwardX, control.forwardY = ZO_Rotate2D(forwardRotationAngle, control.forwardX, control.forwardY)
-- Apply rotation velocity.
local progressiveFrameDeltaS = frameDeltaS * (1 - (lifetimeInterpolant * 0.75))
local NO_ROTATION = 0
local normalizedScaleX, normalizedScaleY = ZO_RotateTexture3D(control, NO_ROTATION, control.rotationY, control.rotationZ)
-- Apply lighting.
local normalizedCameraFacing = ZO_GetNormalizedCameraFacingDirectionFromNormalizedAxisScales(normalizedScaleX, normalizedScaleY)
end
end
if textureReleaseQueue then
end
end
end
local hasMouseInput = mouseX1 and mouseY1
local hasControllerInput = controllerX ~= 0 or controllerY ~= 0
if forceWindVelocityUpdate or (not (hasMouseInput or hasControllerInput) and frameTimeS >= self.nextWindVelocityUpdateS) then
-- Update the wind velocity vector to point in a random direction with
-- a magnitude in the configured velocity range.
-- Generate wind angles between 70-90 and 270-290 degrees (positive Y-axis
-- pushes downward)
local velocityX = directionX * magnitude
local velocityY = directionY * magnitude
elseif hasControllerInput then
-- Override the wind velocity in relation to the magnitude of the
-- continuous direction of the controller left stick.
local magnitude = controllerDistance * ZO_BACKGROUND_WIND_MOUSE_VELOCITY_COEFFICIENT
self:SetWindVelocity(magnitude, velocityX, velocityY, -ZO_BACKGROUND_WIND_VELOCITY_OVERRIDE_TRANSITION_INTERVAL_SECONDS)
elseif hasMouseInput then
-- Override the wind velocity in relation to the distance that the mouse
-- has traveled since the button was first pressed.
local directionX, directionY = mouseX2 - mouseX1, mouseY2 - mouseY1
if directionX ~= 0 or directionY ~= 0 then
local magnitude = zo_clamp(cursorDistance / 150, 0, 1) * ZO_BACKGROUND_WIND_MOUSE_VELOCITY_COEFFICIENT
self:SetWindVelocity(magnitude, velocityX, velocityY, -ZO_BACKGROUND_WIND_VELOCITY_OVERRIDE_TRANSITION_INTERVAL_SECONDS)
end
end
end
-- Interpolate between the previous wind velocity and the current wind velocity
-- relative to the time elapsed since the last wind velocity change.
local normalizedTransitionIntervalElapsed = ZO_EaseOutQuintic(zo_clamp(transitionIntervalElapsedS / self.windVelocityTransitionIntervalS, 0, 0.9))
self.windVectorX = zo_lerp(self.previousWindVelocityX, self.windVelocityX, normalizedTransitionIntervalElapsed)
self.windVectorY = zo_lerp(self.previousWindVelocityY, self.windVelocityY, normalizedTransitionIntervalElapsed)
end |