-- cod zombie points system recreated

UPGRADE_UPGRADE   = 0;
UPGRADE_APPLY     = 1;
UPGRADE_DOWNGRADE = 2;
UPGRADE_RESTORE   = 3;
player_list = {};

function MULT(value, activator, caller)
    local userid = activator:GetUserId();
	if (not activator or not player_list[userid]) then return; end

	cashmult = activator:GetAttributeValue("kill eater user 1");
    value = tonumber(value);
	local cashmults = player_list[userid].cashmult

    if (value == UPGRADE_UPGRADE) then
        cashmults = player_list[userid].cashmult + 1;

    elseif (value == UPGRADE_DOWNGRADE) then
        cashmults = player_list[userid].cashmult - 1;

    elseif (value == UPGRADE_RESTORE) then
        local upgradeval = activator:GetAttributeValue("kill eater user 1");
        if (not upgradeval) then
            cashmults = 0;
        end
    end
end

local function cashforhits(activator)
	local callbacks = {}

	local function removeCallbacks()
		for _, callbackId in pairs(callbacks) do
			activator:RemoveCallback(callbackId)
		end
	end

	callbacks.damagetype = activator:AddCallback(ON_DAMAGE_RECEIVED_PRE, function(_, damageInfo)
		-- PrintTable(damageInfo)

		local damage = damageInfo.Damage

		if damage <= 0 then
			return
		end

		local damageType = damageInfo.DamageType
		local hitter = damageInfo.Attacker
		local userid = hitter:GetUserId();

		if (damageType & TF_DMG_CUSTOM_BURNING) ~= 0 then
			return
		end

		local isCrit = (damageType & DMG_CRITICAL) ~= 0

		if isCrit then
			damage = damage * 3
		end

		local curHealth = activator.m_iHealth

		local isLethal = curHealth - (damage + 1) <= 0
		local mults = hitter(userid).cashmult + 1

		local function curr(amount)
			hitter:AddCurrency(amount * mults)
		end

		if not isLethal then
			curr(0)
			return
		end

		if (damageType & DMG_BLAST) ~= 0 then
			curr(20)
			
		elseif (damageType & DMG_MELEE) == 0 and (damageType & DMG_CRITICAL) ~= 0 then -- this is used for headshots, may overlap with Instakill
			curr(20)
			
		elseif (damageType & DMG_MELEE) ~= 0 then
			curr(20)
			
		elseif (damageType & DMG_BULLET) ~= 0 then
			curr(5)
			
		elseif (damageType & DMG_BULLET) and (damageType & DMG_CRITICAL) ~= 0 then
			curr(40)
        
		elseif (damageType & DMG_USE_HITLOCATIONS) ~= 0 then
            curr(10)
        
		elseif isLethal then
			curr(20)
			
		end
	end)

	callbacks.spawned = activator:AddCallback(1, function()
		removeCallbacks()
	end)

	callbacks.died = activator:AddCallback(9, function()
		removeCallbacks()
	end)
end

function OnWaveSpawnBot(bot)
	timer.Simple(1, function()
		cashforhits(bot)
	end)
end