notif.lua

-- --------------------------------------------
-- Settings
-- --------------------------------------------

local body = {
	-- Text
	scale = 0.3,
	offsetLine = 0.02,
	-- Warp
	offsetX = 0.005,
	offsetY = 0.004,
	-- Sprite
	dict = 'commonmenu',
	sprite = 'gradient_bgd',
	width = 0.14,
	height = 0.012,
	heading = -90.0,
	-- Betwenn != notifications
	gap = 0.002,
}

local defaultText = '~r~~h~ERROR : ~h~~s~The text of the notification is nil.'
local defaultType = 'topRight'
local defaultTimeout = 6000

RequestStreamedTextureDict(body.dict) -- Load the sprite dict. properly

-- --------------------------------------------
-- Calculus functions
-- --------------------------------------------

local function goDown(v, id) -- Notifications will go under the previous notifications
	for i = 1, #v do
		if v[i].draw and i ~= id then
			v[i].y = v[i].y + (body.height + (v[id].lines*2 + 1)*body.offsetLine)/2 + body.gap
		end
	end
end

local function goUp(v, id) -- Notifications will go above the previous notifications
	for i = 1, #v do
		if v[i].draw and i ~= id then
			v[i].y = v[i].y - (body.height + (v[id].lines*2 + 1)*body.offsetLine)/2 - body.gap
		end
	end
end

local function centeredDown(v, id) -- Notification will stay centered from the default position and new notification will go at the bottom
	for i = 1, #v do
		if v[i].draw and i ~= id then
			v[i].y = v[i].y - (body.height + (v[id].lines*2 + 1)*body.offsetLine)/4 - body.gap/2
			v[id].y = v[i].y + (body.height + (v[id].lines*2 + 1)*body.offsetLine)/2 + body.gap
		end
	end
end

local function centeredUp(v, id) -- Notification will stay centered from the default position and new notification will go at the top
	for i = 1, #v do
		if v[i].draw and i ~= id then
			v[i].y = v[i].y + (body.height + (v[id].lines*2 + 1)*body.offsetLine)/4 + body.gap/2
			v[id].y = v[i].y - (body.height + (v[id].lines*2 + 1)*body.offsetLine)/2 - body.gap
		end
	end
end

local function CountLines(v, text)
	BeginTextCommandLineCount("STRING")
    SetTextScale(body.scale, body.scale)
    SetTextWrap(v.x, v.x + body.width - body.offsetX)
	AddTextComponentSubstringPlayerName(text)
	local nbrLines = GetTextScreenLineCount(v.x + body.offsetX, v.y + body.offsetY)
	return nbrLines
end

local function DrawText(v, text)
	SetTextScale(body.scale, body.scale)
    SetTextWrap(v.x, v.x + body.width - body.offsetX)

    BeginTextCommandDisplayText("STRING")
    AddTextComponentSubstringPlayerName(text)
    EndTextCommandDisplayText(v.x + body.offsetX, v.y + body.offsetY)
end

local function DrawBackground(v)
	DrawSprite(body.dict, body.sprite, v.x + body.width/2, v.y + (body.height + v.lines*body.offsetLine)/2, body.width, body.height + v.lines*body.offsetLine, body.heading, 255, 255, 255, 255)
end

-- --------------------------------------------
-- Different options
-- --------------------------------------------

local positions = {
	['centerRight'] = { x = 0.85, y = 0.5, notif = {}, offset = centeredUp },
	['centerLeft'] = { x = 0.01, y = 0.5, notif = {}, offset = centeredUp },
	['topRight'] = { x = 0.85, y = 0.015, notif = {}, offset = goDown },
	['topLeft'] = { x = 0.01, y = 0.015, notif = {}, offset = goDown },
	['bottomRight'] = { x = 0.85, y = 0.955, notif = {}, offset = goUp },
	['bottomLeft'] = { x = 0.015, y = 0.75, notif = {}, offset = goUp },
	-- ['position name'] = { starting x, starting y, notif = {} (nothing toput here it's juste the handle), offset = the way multiple notifications will stack up}
}

-- --------------------------------------------
-- Main
-- --------------------------------------------

function SendNotification(options)
	local text = options.text or defaultText
	local type = options.type or defaultType
	local timeout = options.timeout or defaultTimeout

	local p = positions[type]
	local id = #p.notif + 1
	local nbrLines = CountLines(p, text)

	p.notif[id] = {
		x = p.x,
		y = p.y,
		lines = nbrLines, 
		draw = true,
	}

	if id > 1 then
		p.offset(p.notif, id)
	end

	Citizen.CreateThread(function()
		Wait(timeout)
		p.notif[id].draw = false
	end)

	Citizen.CreateThread(function()
		while p.notif[id].draw do
			Wait(0)
			DrawBackground(p.notif[id])
			DrawText(p.notif[id], text)
		end
	end)
end