MaxDistance = 512
Tool = script.Parent
TouchDamage = 99
DirectDamage = 99

function fireLaser(pos, target, obj)
	local part = Instance.new("Part")
	part.Anchored = true
	part.CanCollide = false
	part.formFactor = "Symmetric"
	part.TopSurface = 0
	part.BottomSurface = 0
	part.BrickColor = BrickColor.new("Institutional white")
	part.Transparency = 0.5
	part.Name = "Laser Shot"
	part.Locked = true
	part.Size = Vector3.new(1,1,(pos - obj.Position).magnitude)
	part.CFrame = CFrame.new(((obj.Position + pos)/2) + 1 * (pos - obj.Position).unit, pos)

	local mesh = Instance.new("BlockMesh")
	mesh.Scale = Vector3.new(3,3,1)
	mesh.Parent = part

	part.Parent = workspace
	--Optional:  Laser will damage others than the target.
	--part.Touched:connect(onTouch)
	local h = getHumanoid(target.Parent)
	local player = game.Players:findFirstChild(Tool.Parent.Name)
	if player ~= nil and h ~= nil and target.Parent ~= Tool.Parent then
		tagHumanoid(h, player)
		h:takeDamage(DirectDamage)
		wait(0.05)
		untagHumanoid(h)
	elseif player ~= nil and h==nil and target.Parent ~= Tool.Parent then
		if target:getMass() <= 216 then
			burn(target, part)
		end
	else
		getTarget(pos)
	end

	for v=1, 10 do
		part.Transparency = 0.1 * v
		wait(0.05)
	end


	part:remove()
end

function burn(obj, laser)
print 'damaged'
	end

function getTarget(pos)
	local child = workspace:getChildren()
	for i,v in pairs(child) do
		local h = getHumanoid(v)
		if h ~= nil and v ~= Tool.Parent then
			local torso = v:findFirstChild("Torso")
			if torso ~= nil then
				if (torso.Position - pos).magnitude <= 3 then
					local player = game.Players:findFirstChild(Tool.Parent.Name)
					if player ~= nil then
						tagHumanoid(h, player)
					end
					h:takeDamage(DirectDamage)
					wait(0.05)
					untagHumanoid(h)
				end
			end
		end
	end
end


function getHumanoid(obj)
	local child = obj:getChildren()
	for i=1, #child do
		if child[i].className == "Humanoid" then
			return child[i]
		end
	end
	return nil
end

db = false
function onTouch(hit)
	if db then return end
	db = true
	if hit.Parent ~= Tool.Parent then
		local h = getHumanoid(hit.Parent)
		if h ~= nil then
			local player = game.Players:findFirstChild(Tool.Parent.Name)
			if player ~= nil then
				tagHumanoid(h, player)
			end
			h:takeDamage(TouchDamage)
			wait(0.1)
			untagHumanoid(h)
		end
	end
	wait(0.9)
	db = false
end


function tagHumanoid(humanoid, player)
	local creator_tag = Instance.new("ObjectValue")
	creator_tag.Value = player
	creator_tag.Name = "creator"
	creator_tag.Parent = humanoid
end

function untagHumanoid(humanoid)
	if humanoid ~= nil then
		local tag = humanoid:findFirstChild("creator")
		if tag ~= nil then
			tag.Parent = nil
		end
	end
end

enabled = true
function onActivated(mouse)
	if not enabled or mouse.Target == nil then return end
	enabled = false
	local handle = Tool:findFirstChild("Particle")
	local human = Tool.Parent:findFirstChild("Humanoid")
	if handle ~= nil and human ~= nil then
		if (handle.Position - human.TargetPoint).magnitude <= MaxDistance then
script.Parent.Closed1.Transparency = 1
script.Parent.Closed2.Transparency = 1
script.Parent.Open1.Transparency = 0
script.Parent.Open2.Transparency = 0
script.Parent.Eye2.Transparency = 1
script.Parent.FirePart.Fire.Enabled = true
			script.Parent.Particle.ParticleEmitter.Enabled = true
				enabled = true
			wait(1)
			script.Parent.Eye2.Transparency = 0
script.Parent.FirePart.Fire.Enabled = false
			script.Parent.Closed1.Transparency = 0
script.Parent.Closed2.Transparency = 0
script.Parent.Open1.Transparency = 1
script.Parent.Open2.Transparency = 1
			script.Parent.Particle.ParticleEmitter.Enabled = false
			fireLaser(human.TargetPoint, mouse.Target, handle)
		end
	end
end

mouseabled = true
function onButton1Down(mouse)
	if not mouseabled or mouse.Target == nil then return end
	mouseabled = false
	mouse.Icon = "rbxasset://textures/GunWaitCursor.png"
	wait(0.5)
	mouseabled = true
	mouse.Icon = "rbxasset://textures/GunCursor.png"
end

zoom = false
function onKeyDown(key)
	key:lower()
	if key == "q" then
		if not zoom then
			zoom = true

			local obj = Instance.new("Part")
			obj.Parent = Tool.Parent
			obj.Size = Vector3.new(1,1,1)
			obj.Transparency = 1
			obj.CanCollide = false
			obj.Anchored = true
			obj.Name = "Zoom"
			obj.CFrame = CFrame.new(Tool.Parent.Humanoid.TargetPoint)

			cam = workspace.CurrentCamera:Clone()
			cam.Parent = workspace
			workspace.CurrentCamera.CameraSubject = obj
			workspace.CurrentCamera.CameraType = 4
		else
			zoom = false

			local check = Tool.Parent:findFirstChild("Zoom")
			if check ~= nil then
				check:remove()
			end

			workspace.CurrentCamera.CameraSubject = Tool.Parent.Humanoid
			workspace.CurrentCamera:Remove()
			workspace.CurrentCamera = cam
		end
	end
end

function onSelected(mouse)
	connection = script.Parent.Activated:connect(function() onActivated(mouse) end)
	mouse.KeyDown:connect(onKeyDown)
	mouse.Button1Down:connect(function() onButton1Down(mouse) end)

	mouse.Icon = "rbxasset://textures/GunCursor.png"
end

function onDeselected()
	connection:disconnect()
end

script.Parent.Equipped:connect(onSelected)
script.Parent.Unequipped:connect(onDeselected)