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gamemodes/helix/plugins/thirdperson.lua

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+--[[
+| This file was obtained through the combined efforts
+| of Madbluntz & Plymouth Antiquarian Society.
+|
+| Credits: lifestorm, Gregory Wayne Rossel JR.,
+| 	Maloy, DrPepper10 @ RIP, Atle!
+|
+| Visit for more: https://plymouth.thetwilightzone.ru/
+--]]
+
+
+local PLUGIN = PLUGIN
+
+PLUGIN.name = "Third Person"
+PLUGIN.author = "Black Tea"
+PLUGIN.description = "Enables third person camera usage."
+
+ix.config.Add("thirdperson", false, "Allow Thirdperson in the server.", nil, {
+	category = "server"
+})
+
+if (CLIENT) then
+	local function isHidden()
+		return !ix.config.Get("thirdperson")
+	end
+
+	ix.option.Add("thirdpersonEnabled", ix.type.bool, false, {
+		category = "thirdperson",
+		hidden = isHidden,
+		OnChanged = function(oldValue, value)
+			hook.Run("ThirdPersonToggled", oldValue, value)
+		end
+	})
+
+	ix.option.Add("thirdpersonClassic", ix.type.bool, false, {
+		category = "thirdperson",
+		hidden = isHidden
+	})
+
+	ix.option.Add("thirdpersonVertical", ix.type.number, 0, {
+		category = "thirdperson", min = -10, max = 30,
+		hidden = isHidden
+	})
+
+	ix.option.Add("thirdpersonHorizontal", ix.type.number, 15, {
+		category = "thirdperson", min = -30, max = 30,
+		hidden = isHidden
+	})
+
+	ix.option.Add("thirdpersonDistance", ix.type.number, 40, {
+		category = "thirdperson", min = 0, max = 100,
+		hidden = isHidden
+	})
+
+
+	concommand.Add("ix_togglethirdperson", function()
+		local bEnabled = !ix.option.Get("thirdpersonEnabled", false)
+
+		ix.option.Set("thirdpersonEnabled", bEnabled)
+	end)
+
+	local function isAllowed()
+		return ix.config.Get("thirdperson") and ix.config.Get("thirdperson")
+	end
+
+	local playerMeta = FindMetaTable("Player")
+	local traceMin = Vector(-10, -10, -10)
+	local traceMax = Vector(10, 10, 10)
+
+	function playerMeta:CanOverrideView()
+		local entity = Entity(self:GetLocalVar("ragdoll", 0))
+
+		if (IsValid(ix.gui.characterMenu) and !ix.gui.characterMenu:IsClosing() and ix.gui.characterMenu:IsVisible()) then
+			return false
+		end
+
+		if (IsValid(ix.gui.menu) and ix.gui.menu:GetCharacterOverview()) then
+			return false
+		end
+
+		if (self:IsWepRaised()) then
+			return false
+		end
+
+		if (ix.option.Get("thirdpersonEnabled", false) and
+			!IsValid(self:GetVehicle()) and
+			isAllowed() and
+			IsValid(self) and
+			self:GetCharacter() and
+			!self:GetNetVar("actEnterAngle") and
+			!IsValid(entity) and
+			LocalPlayer():Alive()
+			) then
+			return true
+		end
+	end
+
+	local view, traceData, traceData2, aimOrigin, crouchFactor, ft, curAng, owner
+	local clmp = math.Clamp
+	crouchFactor = 0
+
+	function PLUGIN:CalcView(client, origin, angles, fov)
+		ft = FrameTime()
+
+		if (client:CanOverrideView() and LocalPlayer():GetViewEntity() == LocalPlayer()) then
+			local bNoclip = LocalPlayer():GetMoveType() == MOVETYPE_NOCLIP
+
+			if ((client:OnGround() and client:KeyDown(IN_DUCK)) or client:Crouching()) then
+				crouchFactor = Lerp(ft*5, crouchFactor, 1)
+			else
+				crouchFactor = Lerp(ft*5, crouchFactor, 0)
+			end
+
+			curAng = owner.camAng or angle_zero
+			view = {}
+			traceData = {}
+				traceData.start = 	client:GetPos() + client:GetViewOffset() +
+									curAng:Up() * ix.option.Get("thirdpersonVertical", 10) +
+									curAng:Right() * ix.option.Get("thirdpersonHorizontal", 0) -
+									client:GetViewOffsetDucked() * .5 * crouchFactor
+				traceData.endpos = traceData.start - curAng:Forward() * ix.option.Get("thirdpersonDistance", 50)
+				traceData.filter = client
+				traceData.ignoreworld = bNoclip
+				traceData.mins = traceMin
+				traceData.maxs = traceMax
+			view.origin = util.TraceHull(traceData).HitPos
+			aimOrigin = view.origin
+			view.angles = curAng + client:GetViewPunchAngles()
+
+			traceData2 = {}
+				traceData2.start = 	aimOrigin
+				traceData2.endpos = aimOrigin + curAng:Forward() * 65535
+				traceData2.filter = client
+				traceData2.ignoreworld = bNoclip
+
+			local bClassic = ix.option.Get("thirdpersonClassic", false)
+
+			if (bClassic or owner:IsWepRaised() or
+				(owner:KeyDown(bit.bor(IN_FORWARD, IN_BACK, IN_MOVELEFT, IN_MOVERIGHT)) and owner:GetVelocity():Length() >= 10)) then
+				client:SetEyeAngles((util.TraceLine(traceData2).HitPos - client:GetShootPos()):Angle())
+			else
+				local currentAngles = client:EyeAngles()
+				currentAngles.pitch = (util.TraceLine(traceData2).HitPos - client:GetShootPos()):Angle().pitch
+
+				client:SetEyeAngles(currentAngles)
+			end
+
+			return view
+		end
+	end
+
+	local diff, fm, sm
+	function PLUGIN:CreateMove(cmd)
+		owner = LocalPlayer()
+
+		if (owner:CanOverrideView() and owner:GetMoveType() != MOVETYPE_NOCLIP and
+			LocalPlayer():GetViewEntity() == LocalPlayer()) then
+			fm = cmd:GetForwardMove()
+			sm = cmd:GetSideMove()
+			diff = (owner:EyeAngles() - (owner.camAng or Angle(0, 0, 0)))[2] or 0
+			diff = diff / 90
+
+			cmd:SetForwardMove(fm + sm * diff)
+			cmd:SetSideMove(sm + fm * diff)
+			return false
+		end
+	end
+
+	function PLUGIN:InputMouseApply(cmd, x, y, ang)
+		owner = LocalPlayer()
+
+		-- Allows rotating entities with the physgun in thirdperson.
+		if (IsValid(owner:GetActiveWeapon())
+			and owner:GetActiveWeapon():GetClass() == "weapon_physgun"
+			and owner:KeyDown(IN_USE)) then
+			return false
+		end
+
+		-- Allows rotating entities with hands in thirdperson.
+		if (owner:GetLocalVar("bIsHoldingObject", false) and owner:KeyDown(IN_ATTACK2)) then
+			return false
+		end
+
+		if (!owner.camAng) then
+			owner.camAng = Angle(0, 0, 0)
+		end
+
+		owner.camAng.p = clmp(math.NormalizeAngle(owner.camAng.p + y / 50), -85, 85)
+		owner.camAng.y = math.NormalizeAngle(owner.camAng.y - x / 50)
+
+		if (owner:CanOverrideView() and LocalPlayer():GetViewEntity() == LocalPlayer()) then
+			return true
+		end
+	end
+
+	function PLUGIN:ShouldDrawLocalPlayer()
+		if (LocalPlayer():GetViewEntity() == LocalPlayer() and !IsValid(LocalPlayer():GetVehicle())) then
+			return LocalPlayer():CanOverrideView()
+		end
+	end
+end