Add flares

[bobprofisker]

Example WP script that implements flares, the magic is as follows

trigger.action.signalFlare(effectPoint, colour, heading)

illum bomb example

trigger.action.illuminationBomb(table vec3 , number power )

example script

-- Tracks only smoke rockets (HYDRA_70_M156) and triggers WP-style impact effect.
--assert(loadfile('C:\Users\hindsas\Saved Games\DCS.openbeta\Missions\Vietnam Islands\LUA\willie_pete_effect.lua'))()
if not _G.__williePeteRocketHandler then
_G.__williePeteRocketHandler = true
_G.__williePeteTrackedRockets = _G.__williePeteTrackedRockets or {}

local function wpSmokeEffect(heading, point)
	if not (point and point.x and point.z) then
		return
	end

	local effectPoint = {
		x = point.x,
		y = land.getHeight({ x = point.x, y = point.z }) + 1,
		z = point.z
	}

	trigger.action.explosion(effectPoint, 1)
	trigger.action.smoke(effectPoint, 2)
	for i = 1, math.random(0, 4) do
		local variation = math.rad(math.random(-90, 90))
		trigger.action.signalFlare(effectPoint, 2, (heading or 0) + variation)
	end
end

local function scheduleDelayedWPEffect(baseHeading, point)
	local p = { x = point.x, y = point.y, z = point.z }
	timer.scheduleFunction(function(args)
		local variation = math.rad(math.random(-10, 10))
		wpSmokeEffect((args.heading or 0) + variation, args.point)
		return nil
	end, { heading = baseHeading or 0, point = p }, timer.getTime() + 0.2)
end

local function checkTrackedRockets()
	for i = #_G.__williePeteTrackedRockets, 1, -1 do
		local tracked = _G.__williePeteTrackedRockets[i]
		local rocket = tracked and tracked.weapon

		if rocket and rocket:isExist() then
			local p = rocket:getPoint()
			if p then
				tracked.lastPos = { x = p.x, y = p.y, z = p.z }
			end
		else
			if tracked and tracked.lastPos then
				scheduleDelayedWPEffect(tracked.heading, tracked.lastPos)
			end
			table.remove(_G.__williePeteTrackedRockets, i)
		end
	end

	return timer.getTime() + 0.1
end

timer.scheduleFunction(checkTrackedRockets, nil, timer.getTime() + 0.1)

world.addEventHandler({
	onEvent = function(self, event)
		if not event or event.id ~= world.event.S_EVENT_SHOT or not event.weapon then
			return
		end

		local desc = event.weapon:getDesc()
		if not desc or desc.category ~= Weapon.Category.ROCKET then
			return
		end

		if desc.typeName ~= "weapons.nurs.HYDRA_70_M156" then
			return
		end

		local p = event.weapon:getPoint()
		local initialPos = nil
		if p then
			initialPos = { x = p.x, y = p.y, z = p.z }
		end

		local vel = event.weapon:getVelocity()
		local initHeading = 0
		if vel and (vel.x ~= 0 or vel.z ~= 0) then
			initHeading = math.atan2(vel.x, vel.z)
		end

		table.insert(_G.__williePeteTrackedRockets, {
			weapon = event.weapon,
			heading = initHeading,
			lastPos = initialPos
		})
	end
})

end