local tool = script.Parent
local player = game:GetService("Players").LocalPlayer
local char = player.Character
local hum = char:WaitForChild("Humanoid")
local cam = workspace.CurrentCamera
local mouse = player:GetMouse()
local coreEvents =game.ReplicatedStorage.CoreEvents
local clEvents = game.ReplicatedStorage.ClientEvents
local ignore = {char, workspace.Map.Nodes, workspace.Map.Lights, workspace.Map.Sounds, workspace.Map.Spawns, workspace.Decals, workspace.Map.Clip, workspace.Map.NavClip}

local Orakel = require(game.ReplicatedStorage.Orakel.Main)
local mathLib = Orakel.LoadModule("MathLib")
local assetLib = Orakel.LoadModule("AssetLib")
local sndLib = Orakel.LoadModule("SoundLib")
local damage = 35
local hsDamage = 38
local moving = false
local jumping = false


local AccuracyCooldown = 0

local baseSpread = 0
local wpnSpread = {
	spreadMin = 	 2;   --initial shot spread
	spreadMax = 	 12;  --maximum spread
	spreadInc = 	 0.5; --spread increase per shot
	spreadMoveModf = 2.5;   --spread modifier when moving
	cooldownRate   = 0.5;  --spread decrease per frame
}



local wpnAccuracy = {
	accMax = math.atan((wpnSpread.spreadMax / 2) / 100);
	accMin = math.atan((wpnSpread.spreadMin / 2) / 100);
}

function spreadUpdate()
	if not m1down then
		AccuracyCooldown = AccuracyCooldown - wpnSpread.cooldownRate
		if AccuracyCooldown < wpnSpread.spreadMin then
			AccuracyCooldown = wpnSpread.spreadMin
		end
	end
	local baseSpreadTemp = AccuracyCooldown

	if moving or jumping then
		baseSpreadTemp = baseSpreadTemp * wpnSpread.spreadMoveModf
	end
	baseSpread = baseSpreadTemp
end


--Entities not to ignore when raycasting bullets
local ignoreExceptions = {
	"func_breakable";
	"func_breakable_glass";
	"func_door";
}

local function isIgnoreException(ent)
	for _, e in pairs(ignoreExceptions) do
		if e == ent.Name then
			return true
		end
	end
	return false
end


for _, ent in pairs(workspace.Map.Entities:GetChildren()) do
	if not isIgnoreException(ent) then
		ignore[#ignore + 1] = ent
	end
end


hum.Running:connect(function(spd)
	if spd > 0 then
		moving = true
	else
		moving = false
	end
end)


hum.Jumping:connect(function(isJumping)
	if isJumping then
		jumping = true
	else
		jumping = false
	end
end)



function Fire()
	coreEvents.PlaySoundOtherClients:FireServer("3d", "WEAPON", tool.Handle.Fire.SoundId, 0.2, 1, false, 2, tool.Handle)
	tool.Handle.ShellEmitter:Emit(1)
	local snd = tool.Handle.Fire:clone()
	snd.Parent = tool.Handle
	snd:Play()
	AccuracyCooldown = AccuracyCooldown + wpnSpread.spreadInc
	if AccuracyCooldown > wpnSpread.spreadMax then
		AccuracyCooldown = wpnSpread.spreadMax
	end
	local direction = mathLib.RandomUnitVector(baseSpread, (mouse.Hit.p - cam.CoordinateFrame.p).unit)
	local ray = Ray.new(cam.CoordinateFrame.p, direction * 512)
	--local ray = Ray.new(cam.CoordinateFrame.p, (target - cam.CoordinateFrame.p).unit * 512)
	local part, position, norm, material = workspace:FindPartOnRayWithIgnoreList(ray, ignore)
	if part then
		local humanoid = part.Parent:FindFirstChild("Humanoid")
		local hpVal = part.Parent:FindFirstChild("Health")
		local hhpVal = part.Parent:FindFirstChild("HeadHealth")

		if humanoid and hpVal and hhpVal then
			if hpVal.Value > 0 and hhpVal.Value > 0 then
				if part.Name == "Head" then
					game.ReplicatedStorage.MapEvents.DamageEnemy:FireServer(humanoid, hsDamage, true)
				else
					game.ReplicatedStorage.MapEvents.DamageEnemy:FireServer(humanoid, damage, false)
				end
			end
		else
			if part.Name == "func_breakable_glass" then
				local hp = Orakel.GetKeyValue(part, "Health")
				if hp > 0 then
					Orakel.FireInput(part, "Damage", damage)
				end
			end

			local rmat = assetLib.RealMaterial:Get(part)
			local decs = assetLib.Decals[rmat]
			local decal = game.ReplicatedStorage.ClientEvents.CreateDecal:Invoke(
				CFrame.new(position, position + norm),
				Vector3.new(0.5 ,0.5, 0.2),
				decs[math.random(1, #decs)],
				"Front",
				false
			)
			game.ReplicatedStorage.ClientEvents.CreateHitParticle:Fire(decal, "Front", rmat, part.BrickColor.Color)
			sndLib.PlaySoundClient("3d", "BULLET", assetLib.Sounds.Impact[rmat], 0.2, 1, false, 2, decal)
			coreEvents.CreateBulletEffect:FireServer(decal.CFrame, rmat, part.BrickColor.Color)
		end
	end
end


--Render tasks
game:GetService("RunService").RenderStepped:connect(function()
	spreadUpdate()
end)


tool.Equipped:connect(function(mouse)
	mouse.Button1Down:connect(function()
		m1down = true
		coreEvents.MuzzleflashOtherClients:FireServer(tool.Muzzle)
		tool.Muzzle.PointLight.Enabled = true
		tool.Muzzle.Transparency = 0
		while true do
			if not m1down then
				break
			end
			Fire()
			wait(0.109)
		end
	end)
	mouse.Button1Up:connect(function()
		m1down = false
		coreEvents.MuzzleflashOtherClients:FireServer(tool.Muzzle)
		tool.Muzzle.PointLight.Enabled = false
		tool.Muzzle.Transparency = 1
	end)
end)