--[[---------------------------------------------------------
    Get the real frame time, instead of the 
	 host_timescale linked frametime. This is for things
	 like GUI effects. NOT FOR REAL IN GAME STUFF(!!!)
-----------------------------------------------------------]]
local FrameTime = 0
local LastQuery = 0

function RealFrameTime() return FrameTime end

local function RealFrameTimeThink()

	FrameTime = math.Clamp( SysTime() - LastQuery, 0, 0.1 )
	LastQuery = SysTime()

end

hook.Add( "Think", "RealFrameTime", RealFrameTimeThink ) -- Think is called after ever frame on the client.

local function RenderSpawnIcon_Prop( model, pos, middle, size )

	if ( size < 900 ) then
		size = size * (1 - ( size / 900 ))
	else
		size = size * (1 - ( size / 4096 ))
	end
	
	size = math.Clamp( size, 5, 1000 )

	local ViewAngle = Angle( 25, 40, 0 )
	local ViewPos = pos + ViewAngle:Forward() * size * -15
	local view = {}
	
	view.fov		= 4 + size * 0.04
	view.origin 	= ViewPos + middle
	view.znear		= 1
	view.zfar		= ViewPos:Distance( pos ) + size * 2
	view.angles		= ViewAngle

	return view
	
end

local function RenderSpawnIcon_Ragdoll( model, pos, middle, size )

	local at = model:GetAttachment( model:LookupAttachment( "eyes" ) )

	local ViewAngle = at.Ang + Angle( -10, 160, 0 )
	local ViewPos = at.Pos + ViewAngle:Forward() * -60 + ViewAngle:Up() * -2
	local view = {}
	
	view.fov		= 10
	view.origin 	= ViewPos
	view.znear		= 0.1
	view.zfar		= 100
	view.angles		= ViewAngle

	return view
	
end

--
-- For some TF2 ragdolls which do not have "eye" attachments
--
local function RenderSpawnIcon_Ragdoll_Head( model, pos, middle, size )

	local at = model:GetAttachment( model:LookupAttachment( "head" ) )

	local ViewAngle = at.Ang + Angle( -10, 160, 0 )
	local ViewPos = at.Pos + ViewAngle:Forward() * -67 + ViewAngle:Up() * -7 + ViewAngle:Right() * 1.5
	local view = {}
	
	view.fov		= 10
	view.origin 	= ViewPos
	view.znear		= 0.1
	view.zfar		= 100
	view.angles		= ViewAngle

	return view
	
end

local function RenderSpawnIcon_DOD( model, pos, middle, size )

	local ViewAngle = Angle( 15, -40, 0 )
	local ViewPos = pos + ViewAngle:Forward() * -100 + ViewAngle:Up() * 20
	local view = {}
	
	view.fov		= 20
	view.origin 	= ViewPos + middle
	view.znear		= 1
	view.zfar		= ViewPos:Distance( pos ) + size * 2
	view.angles		= ViewAngle

	return view
	
end

local function RenderSpawnIcon_CS( model, pos, middle, size )

	local ViewAngle = Angle( 15, -40, 0 )
	local ViewPos = pos + ViewAngle:Forward() * -50 + ViewAngle:Up() * 30 + ViewAngle:Right() * 2
	local view = {}
	
	view.fov		= 20
	view.origin 	= ViewPos + middle
	view.znear		= 1
	view.zfar		= ViewPos:Distance( pos ) + size * 2
	view.angles		= ViewAngle

	return view
	
end

local function RenderSpawnIcon_Special( model, pos, middle, size, x, y, z )

	local ViewAngle = Angle( 15, -40, 0 )
	local ViewPos = pos + ViewAngle:Forward() * x + ViewAngle:Up() * y + ViewAngle:Right() * z
	local view = {}
	
	view.fov		= 20
	view.origin 	= ViewPos + middle
	view.znear		= 1
	view.zfar		= ViewPos:Distance( pos ) + size * 2
	view.angles		= ViewAngle

	return view
	
end

SpawniconGenFunctions = {}

function PositionSpawnIcon( model, pos )

	local mn, mx = model:GetRenderBounds()
	local middle = (mn + mx) * 0.5
	local size = 0
	size = math.max( size, math.abs(mn.x) + math.abs(mx.x) );
	size = math.max( size, math.abs(mn.y) + math.abs(mx.y) );
	size = math.max( size, math.abs(mn.z) + math.abs(mx.z) );
	
	model:SetPos( pos )
	model:SetAngles( Angle( 0, 180, 0 ) )
	
	local ModelName = model:GetModel()
	ModelName = string.Replace( ModelName, "--", "/" )
	ModelName = string.Replace( ModelName, "\\", "/" )
	
	local fnc = SpawniconGenFunctions[ ModelName ]
	if ( fnc ) then return fnc( model, pos, middle, size ) end
	
	if ( model:LookupAttachment( "eyes" ) > 0 ) then
		return RenderSpawnIcon_Ragdoll( model, pos, middle, size )
	end
	
	if ( model:LookupAttachment( "head" ) > 0 ) then
		return RenderSpawnIcon_Ragdoll_Head( model, pos, middle, size )
	end

	return RenderSpawnIcon_Prop( model, pos, middle, size )

end

-- DOD Player Models
SpawniconGenFunctions[ "models/player/american_assault.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/american_mg.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/american_rifleman.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/american_rocket.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/american_sniper.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/american_support.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_assault.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_mg.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_rifleman.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_rocket.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_sniper.mdl" ] = RenderSpawnIcon_DOD
SpawniconGenFunctions[ "models/player/german_support.mdl" ] = RenderSpawnIcon_DOD

-- CS Player Models
SpawniconGenFunctions[ "models/player/ct_gign.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/ct_sas.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/ct_urban.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/ct_gsg9.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/t_leet.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/t_phoenix.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/t_arctic.mdl" ] = RenderSpawnIcon_CS
SpawniconGenFunctions[ "models/player/t_guerilla.mdl" ] = RenderSpawnIcon_CS

-- L4D Models
SpawniconGenFunctions[ "models/infected/witch.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -40, 25, 2 ) end
SpawniconGenFunctions[ "models/infected/smoker.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -60, 33, 5 ) end
SpawniconGenFunctions[ "models/infected/hunter.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -50, 26, 2 ) end
SpawniconGenFunctions[ "models/infected/hulk.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -70, 30, 11 ) end
SpawniconGenFunctions[ "models/infected/boomer.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -50, 27, 4 ) end


SpawniconGenFunctions[ "models/infected/common_female01.mdl" ] = 
function ( model, pos, middle, size )

	local at = model:GetAttachment( model:LookupAttachment( "forward" ) )
	local ViewAngle = at.Ang + Angle( 180, 180, 0 ) + Angle( 0, -45, -45 )
	local ViewPos = at.Pos + ViewAngle:Forward() * -90 + ViewAngle:Up() * -4 + ViewAngle:Right() * 1.5
	return { fov = 10, origin = ViewPos, znear = 0.1, zfar = 200, angles = ViewAngle }
	
end

SpawniconGenFunctions[ "models/infected/common_female_nurse01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_female01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_female_rural01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_female01.mdl" ]

SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]  = 
function ( model, pos, middle, size )

	local at = model:GetAttachment( model:LookupAttachment( "forward" ) )
	local ViewAngle = at.Ang + Angle( 0, 155, 0 ) + Angle( 0, 0, 0 )
	local ViewPos = at.Pos + ViewAngle:Forward() * -90 + ViewAngle:Up() * -4 + ViewAngle:Right() * 1.5
	return { fov = 10, origin = ViewPos, znear = 0.1, zfar = 200, angles = ViewAngle }
	
end

SpawniconGenFunctions[ "models/infected/common_male_baggagehandler_01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_male_pilot.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_male_rural01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_male_suit.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_military_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_police_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_patient_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_surgeon_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_tsaagent_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]
SpawniconGenFunctions[ "models/infected/common_worker_male01.mdl" ] = SpawniconGenFunctions[ "models/infected/common_male01.mdl" ]

-- ZPS Zombies
SpawniconGenFunctions[ "models/zombies/zombie0/zombie0.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end
SpawniconGenFunctions[ "models/zombies/zombie1/zombie1.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end
SpawniconGenFunctions[ "models/zombies/zombie2/zombie2.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end
SpawniconGenFunctions[ "models/zombies/zombie3/zombie3.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end
SpawniconGenFunctions[ "models/zombies/zombie4/zombie4.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end
SpawniconGenFunctions[ "models/zombies/zombie5/zombie5.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -100, 17, 10 ) end

-- L4D2
SpawniconGenFunctions[ "models/infected/boomette.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -50, 28, 3 ) end
SpawniconGenFunctions[ "models/infected/charger.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -70, 14, 20 ) end
SpawniconGenFunctions[ "models/infected/jockey.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -50, -5, 18 ) end
SpawniconGenFunctions[ "models/infected/spitter.mdl" ] = function( a, b, c, d ) return RenderSpawnIcon_Special( a, b, c, d, -1, 0, -70 ) end

