local INDICATOR_SIZE = 0.32
local INDICATOR_COLOR = { 255, 100, 10, 255 }
local INDICATOR_FADE_MS = 150
local INDICATOR_SWITCH_TIMES = { 300, 400 }
local INDICATOR_AUTOSWITCH_OFF_THRESHOLD = 62
local root = getRootElement()
local localPlayer = getLocalPlayer()
local vehiclesWithIndicator = {}
INDICATOR_AUTOSWITCH_OFF_THRESHOLD = INDICATOR_AUTOSWITCH_OFF_THRESHOLD / 90
local function vectorLength ( vector )
return math.sqrt ( vector[1]*vector[1] + vector[2]*vector[2] + vector[3]*vector[3] )
end
local function normalizeVector ( vector )
local length = vectorLength ( vector )
if length > 0 then
local normalizedVector = {}
normalizedVector[1] = vector[1] / length
normalizedVector[2] = vector[2] / length
normalizedVector[3] = vector[3] / length
return normalizedVector, length
else
return nil, length
end
end
local function crossProduct ( v, w )
local result = {}
result[1] = v[2]*w[3] - v[3]*w[2]
result[2] = w[1]*v[3] - w[3]*v[1]
result[3] = v[1]*w[2] - v[2]*w[1]
return result
end
local function getFakeVelocity ( vehicle )
local _, _, angle = getElementRotation ( vehicle )
local velocity = { 0, 0, 0 }
velocity[1] = -math.sin ( angle )
velocity[2] = math.cos ( angle )
return velocity
end
local function createIndicator ()
local x, y, z = getElementPosition(localPlayer)
local indicator = createMarker ( x, y, z+4, 'corona',
INDICATOR_SIZE,
INDICATOR_COLOR[1],
INDICATOR_COLOR[2],
INDICATOR_COLOR[3],
0
)
setElementStreamable ( indicator, false )
return indicator
end
local function createIndicatorState ( vehicle, indicatorLeft, indicatorRight )
local t = { vehicle = vehicle,
left = indicatorLeft,
right = indicatorRight,
coronaLeft = nil,
coronaRight = nil,
nextChange = 0,
timeElapsed = 0,
currentState = false,
activationDir = nil,
}
return t
end
local function updateIndicatorState ( state )
if not state then return end
local numberOfIndicators = 0
local xmin, ymin, zmin, xmax, ymax, zmax = getElementBoundingBox ( state.vehicle )
xmin = xmin + 0.2
xmax = xmax - 0.2
ymin = ymin + 0.2
ymax = ymax - 0.2
zmin = zmin + 0.6
if state.left then
if not state.coronaLeft then
state.coronaLeft = { createIndicator (), createIndicator () }
attachElements ( state.coronaLeft[1], state.vehicle, xmin, ymax, zmin )
attachElements ( state.coronaLeft[2], state.vehicle, xmin, -ymax, zmin )
end
numberOfIndicators = numberOfIndicators + 1
elseif state.coronaLeft then
destroyElement ( state.coronaLeft[1] )
destroyElement ( state.coronaLeft[2] )
state.coronaLeft = nil
end
if state.right then
if not state.coronaRight then
state.coronaRight = { createIndicator (), createIndicator () }
attachElements ( state.coronaRight[1], state.vehicle, -xmin, ymax, zmin )
attachElements ( state.coronaRight[2], state.vehicle, -xmin, -ymax, zmin )
end
numberOfIndicators = numberOfIndicators + 1
elseif state.coronaRight then
destroyElement ( state.coronaRight[1] )
destroyElement ( state.coronaRight[2] )
state.coronaRight = nil
end
if numberOfIndicators == 1 and getVehicleOccupant ( state.vehicle, 0 ) == localPlayer then
state.activationDir = normalizeVector ( { getElementVelocity ( state.vehicle ) } )
if not state.activationDir then
state.activationDir = getFakeVelocity ( state.vehicle )
end
else
state.activationDir = nil
end
end
local function destroyIndicatorState ( state )
if not state then return end
if state.coronaLeft then
destroyElement ( state.coronaLeft[1] )
destroyElement ( state.coronaLeft[2] )
state.coronaLeft = nil
end
if state.coronaRight then
destroyElement ( state.coronaRight[1] )
destroyElement ( state.coronaRight[2] )
state.coronaRight = nil
end
if getVehicleOccupant ( state.vehicle ) == localPlayer then
setElementData ( state.vehicle, 'i:left', false, true )
setElementData ( state.vehicle, 'i:right', false, true )
end
end
local function performIndicatorChecks ( vehicle )
local indicatorLeft = getElementData(vehicle, 'i:left')
local indicatorRight = getElementData(vehicle, 'i:right')
local anyIndicator = indicatorLeft or indicatorRight
local currentState = vehiclesWithIndicator [ vehicle ]
if anyIndicator then
if currentState then
currentState.left = indicatorLeft
currentState.right = indicatorRight
else
currentState = createIndicatorState ( vehicle, indicatorLeft, indicatorRight )
vehiclesWithIndicator [ vehicle ] = currentState
end
updateIndicatorState ( currentState )
elseif currentState then
destroyIndicatorState ( currentState )
vehiclesWithIndicator [ vehicle ] = nil
end
end
local function setIndicatorsAlpha ( state, alpha )
if state.coronaLeft then
setMarkerColor ( state.coronaLeft[1], INDICATOR_COLOR[1],
INDICATOR_COLOR[2],
INDICATOR_COLOR[3],
alpha )
setMarkerColor ( state.coronaLeft[2], INDICATOR_COLOR[1],
INDICATOR_COLOR[2],
INDICATOR_COLOR[3],
alpha )
end
if state.coronaRight then
setMarkerColor ( state.coronaRight[1], INDICATOR_COLOR[1],
INDICATOR_COLOR[2],
INDICATOR_COLOR[3],
alpha )
setMarkerColor ( state.coronaRight[2], INDICATOR_COLOR[1],
INDICATOR_COLOR[2],
INDICATOR_COLOR[3],
alpha )
end
end
local function processIndicators ( state )
if getElementHealth ( state.vehicle ) == 0 then
destroyIndicatorState ( state )
vehiclesWithIndicator [ state.vehicle ] = nil
return
end
if state.activationDir then
local currentVelocity = normalizeVector ( { getElementVelocity ( state.vehicle ) } )
if not currentVelocity then
currentVelocity = getFakeVelocity ( state.vehicle )
end
local cross = crossProduct ( state.activationDir, currentVelocity )
local length = vectorLength ( cross )
if length > INDICATOR_AUTOSWITCH_OFF_THRESHOLD then
destroyIndicatorState ( state )
vehiclesWithIndicator [ state.vehicle ] = nil
return
end
end
if state.nextChange <= state.timeElapsed then
setIndicatorsAlpha ( state, INDICATOR_COLOR[4] )
state.currentState = not state.currentState
local playerVehicle = getPedOccupiedVehicle ( localPlayer )
state.timeElapsed = 0
if state.currentState then
state.nextChange = INDICATOR_SWITCH_TIMES[1]
else
state.nextChange = INDICATOR_SWITCH_TIMES[2]
end
elseif state.currentState == false then
if state.timeElapsed >= INDICATOR_FADE_MS then
setIndicatorsAlpha ( state, 0 )
else
setIndicatorsAlpha ( state, (1 - (state.timeElapsed / INDICATOR_FADE_MS)) * INDICATOR_COLOR[4] )
end
end
end
addEventHandler('onClientElementDataChange', root, function ( dataName, oldValue )
if getElementType(source) == 'vehicle' and ( dataName == 'i:left' or dataName == 'i:right' ) then
if isElementStreamedIn(source) then
performIndicatorChecks ( source )
end
end
end)
addEventHandler('onClientElementStreamIn', root, function ()
if getElementType(source) == 'vehicle' then
performIndicatorChecks ( source )
end
end)
addEventHandler('onClientElementStreamOut', root, function ()
if getElementType(source) == 'vehicle' then
local currentState = vehiclesWithIndicator [ source ]
if currentState then
destroyIndicatorState ( currentState )
vehiclesWithIndicator [ source ] = nil
end
end
end)
local function switchIndicatorState ( indicator )
local v = getPedOccupiedVehicle(localPlayer)
if v then
if getVehicleType(v) == "Automobile" or getVehicleType(v) == "Bike" or getVehicleType(v) == "Quad" then
if getVehicleOccupant(v, 0) == localPlayer then
local dataName = 'i:' .. indicator
local currentValue = getElementData(v, dataName) or false
setElementData(v, dataName, not currentValue, true)
end
end
end
end
addCommandHandler('indicator_left', function () switchIndicatorState('left') end, false)
addCommandHandler('indicator_right', function () switchIndicatorState('right') end, false)
addEventHandler('onClientPreRender', root, function ( timeSlice )
for vehicle, state in pairs(vehiclesWithIndicator) do
state.timeElapsed = state.timeElapsed + timeSlice
processIndicators ( state, state.lastChange )
end
end)
function handleKeyBind( keyPressed, keyState )
if (keyPressed == "[") then
switchIndicatorState('left')
elseif (keyPressed == "]") then
switchIndicatorState('right')
end
end
addEventHandler('onClientResourceStart', getResourceRootElement(getThisResource()), function ()
local vehicles = getElementsByType ( 'vehicle' )
for k, vehicle in ipairs(vehicles) do
if isElementStreamedIn ( vehicle ) then
local indicatorLeft = getElementData ( vehicle, 'i:left' )
local indicatorRight = getElementData ( vehicle, 'i:right' )
if indicatorLeft or indicatorRight then
performIndicatorChecks ( vehicle )
end
end
end
bindKey ( "[", "down", handleKeyBind )
bindKey ( "]", "down", handleKeyBind )
end, false)
addEventHandler('onClientVehicleRespawn', root, function ()
if isElementStreamedIn ( source ) then
performIndicatorChecks ( source )
end
end)
addEventHandler('onClientElementDestroy', root, function ()
if getElementType ( source ) == 'vehicle' then
local currentState = vehiclesWithIndicator [ source ]
if currentState then
destroyIndicatorState ( currentState )
vehiclesWithIndicator [ source ] = nil
end
end
end)
Piwa: 15
