CLASS.Name = "Shadow Walker"
CLASS.TranslationName = "class_shadow_walker"
CLASS.Description = "description_shadow_walker"
CLASS.Help = "controls_shadow_lurker"

CLASS.BetterVersion = "Frigid Revenant"

CLASS.Model = Model("models/player/corpse1.mdl")
CLASS.OverrideModel = Model("models/player/skeleton.mdl")

CLASS.CanTaunt = true

CLASS.SWEP = "weapon_zs_shadowwalker"

CLASS.Wave = 2 / 6

CLASS.Health = 220
CLASS.Speed = 180

CLASS.Points = CLASS.Health/GM.HumanoidZombiePointRatio

CLASS.VoicePitch = 0.55

CLASS.CanFeignDeath = true

CLASS.NoHideMainModel = true

CLASS.Skeletal = true

local math_random = math.random
local math_min = math.min
local math_max = math.max
local DMG_BULLET = DMG_BULLET
local ACT_HL2MP_ZOMBIE_SLUMP_RISE = ACT_HL2MP_ZOMBIE_SLUMP_RISE
local ACT_HL2MP_SWIM_PISTOL = ACT_HL2MP_SWIM_PISTOL
local ACT_HL2MP_IDLE_CROUCH_FIST = ACT_HL2MP_IDLE_CROUCH_FIST
local ACT_HL2MP_IDLE_KNIFE = ACT_HL2MP_IDLE_KNIFE
local ACT_HL2MP_WALK_CROUCH_KNIFE = ACT_HL2MP_WALK_CROUCH_KNIFE
local ACT_HL2MP_RUN_KNIFE = ACT_HL2MP_RUN_KNIFE

function CLASS:KnockedDown(pl, status, exists)
	pl:AnimResetGestureSlot(GESTURE_SLOT_ATTACK_AND_RELOAD)
end

function CLASS:PlayerFootstep(pl, vFootPos, iFoot, strSoundName, fVolume, pFilter)
	if math_random(2) == 1 then
		pl:EmitSound("npc/barnacle/neck_snap1.wav", 65, math_random(135, 150), 0.27)
	else
		pl:EmitSound("npc/barnacle/neck_snap2.wav", 65, math_random(135, 150), 0.27)
	end

	return true
end

function CLASS:CalcMainActivity(pl, velocity)
	if velocity:Length2DSqr() <= 1 then
		return ACT_IDLE, -1
	end

	return ACT_WALK, -1
end

function CLASS:PlayPainSound(pl)
	pl:EmitSound("npc/antlion/pain2.wav", 70, math_random(190, 200))
	pl.NextPainSound = CurTime() + 0.5

	return true
end

function CLASS:PlayDeathSound(pl)
	pl:EmitSound("npc/antlion/pain"..math_random(2)..".wav", 70, math_random(190, 200))

	return true
end


function CLASS:CalcMainActivity(pl, velocity)
	local feign = pl.FeignDeath
	if feign and feign:IsValid() then
		if feign:GetDirection() == DIR_BACK then
			return 1, pl:LookupSequence("zombie_slump_rise_02_fast")
		end

		return ACT_HL2MP_ZOMBIE_SLUMP_RISE, -1
	end

	if pl:WaterLevel() >= 3 then
		return ACT_HL2MP_SWIM_PISTOL, -1
	end

	if velocity:Length2DSqr() <= 1 then
		if pl:Crouching() and pl:OnGround() then
			return ACT_HL2MP_IDLE_CROUCH_FIST, -1
		end

		return ACT_HL2MP_IDLE_KNIFE, -1
	end

	if pl:Crouching() and pl:OnGround() then
		return ACT_HL2MP_WALK_CROUCH_KNIFE, -1
	end

	return ACT_HL2MP_RUN_KNIFE, -1
end

function CLASS:UpdateAnimation(pl, velocity, maxseqgroundspeed)
	local feign = pl.FeignDeath
	if feign and feign:IsValid() then
		if feign:GetState() == 1 then
			pl:SetCycle(1 - math_max(feign:GetStateEndTime() - CurTime(), 0) * 0.666)
		else
			pl:SetCycle(math_max(feign:GetStateEndTime() - CurTime(), 0) * 0.666)
		end
		pl:SetPlaybackRate(0)
		return true
	end

	local len = velocity:Length()
	if len > 1 then
		--pl:SetPlaybackRate(math_min(len / maxseqgroundspeed * 0.666, 3))
		pl:SetPlaybackRate(math_min(len / maxseqgroundspeed, 3))
	else
		pl:SetPlaybackRate(1)
	end

	return true
end

function CLASS:DoAnimationEvent(pl, event, data)
	if event == PLAYERANIMEVENT_ATTACK_PRIMARY then
		pl:DoZombieAttackAnim(data)
		return ACT_INVALID
	elseif event == PLAYERANIMEVENT_RELOAD then
		pl:AnimRestartGesture(GESTURE_SLOT_ATTACK_AND_RELOAD, ACT_GMOD_GESTURE_TAUNT_ZOMBIE, true)
		return ACT_INVALID
	end
end

function CLASS:DoesntGiveFear(pl)
	return pl.FeignDeath and pl.FeignDeath:IsValid()
end

if SERVER then
function CLASS:AltUse(pl)
	pl:StartFeignDeath()
end

function CLASS:ProcessDamage(pl, dmginfo)
	if dmginfo:GetInflictor().IsMelee then
		dmginfo:SetDamage(dmginfo:GetDamage() / 2)
	end
end
end

if not CLIENT then return end

CLASS.Icon = "zombiesurvival/killicons/skeletal_walker"
CLASS.IconColor = Color(50, 50, 50)

local render_SetBlend = render.SetBlend
local render_SetColorModulation = render.SetColorModulation
local render_SetMaterial = render.SetMaterial
local render_DrawSprite = render.DrawSprite
local render_ModelMaterialOverride = render.ModelMaterialOverride
local angle_zero = angle_zero
local LocalToWorld = LocalToWorld

local colGlow = Color(255, 0, 0)
local matGlow = Material("sprites/glow04_noz")
local matBlack = CreateMaterial("shadowlurkersheet", "UnlitGeneric", {["$basetexture"] = "Tools/toolsblack", ["$model"] = 1})
local vecEyeLeft = Vector(5, -3.5, -1)
local vecEyeRight = Vector(5, -3.5, 1)

function CLASS:PrePlayerDraw(pl)
	render_SetBlend(0.45)
	render_SetColorModulation(0.2, 0.2, 0.2)
end

function CLASS:PostPlayerDraw(pl)
	render_SetBlend(1)
	render_SetColorModulation(1, 1, 1)
end

function CLASS:PrePlayerDrawOverrideModel(pl)
	render_ModelMaterialOverride(matBlack)
end

function CLASS:PostPlayerDrawOverrideModel(pl)
	render_ModelMaterialOverride(nil)

	if pl == MySelf and not pl:ShouldDrawLocalPlayer() or pl.SpawnProtection then return end

	local pos, ang = pl:GetBonePositionMatrixed(6)
	if pos then
		render_SetMaterial(matGlow)
		render_DrawSprite(LocalToWorld(vecEyeLeft, angle_zero, pos, ang), 4, 4, colGlow)
		render_DrawSprite(LocalToWorld(vecEyeRight, angle_zero, pos, ang), 4, 4, colGlow)
	end
end