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--- [[[ Zombie Zone Script ]]] ---

--- [[ Includes ]] ---


--- [[ Globals ]] --------

g_arena = nil		-- The global arena class, to avoid having to pass it around functions
g_bGameRunning = false	-- Is the game rnning?


--- [[ Other Functions ]] ---
function ChooseZombie(zombie)
	-- We want to randomly choose a zombie type to use
	local rand = math.random(1, 100)

	if (rand < 38) then
		zombie:setVehicle(100)	-- Normal Zombie
	elseif (rand < 60) then
		zombie:setVehicle(103)	-- Alien Zombie
	elseif (rand < 80) then
		zombie:setVehicle(102)	-- Flesh Zombie
	elseif (rand < 95) then
		zombie:setVehicle(101)	-- Assassin Zombie
	else
		-- Tell arena! Tough zombie
		g_arena:message(zombie.m_name .. " has spawned as a super-zombie!")
		zombie:setVehicle(104)	-- Tough Zombie
	end
		
end


--- [[ Event Functions ]] ---

function Item_OnPickUp(looter, loot, amounttopickup)
	if (amounttopickup > 50) then
		looter:message("You can't pick up more than 50 anything at a time!")
		return false
	end

	return true
end

function Arena_OnCreate(arena)
	-- Set our global value
	g_arena = arena

	-- Initialize random
	math.randomseed(os.time())
end

function Arena_OnGameStart()
	-- Ensure the player that the game has started
	g_arena:message("Game started, you cannot unspec until the game is finished.")

	-- Lock the arena
	g_arena:lock(true)
	g_bGameRunning = true

	-- Calculate the number of zombies we need
	local amount = g_arena:num() / 5
	
	-- Turn everyone into marines
	for x = 1, g_arena:num() do
		local marine = g_arena:get(x)

		-- Reset their zombie kills
		marine:setstat(0, 0)

		-- If they're not in spec
		if marine:spectator() == false then
			-- Make him a marine
			marine:team_change("Marines", "")
			marine:setVehicle(10)

			-- Warp all marines to the center
			marine:warp(2400, 2608, 80)
		end
	end

	-- Locate the player ids which we will turn to zombies
	local numplayers = g_arena:num()

	for x = 0, amount do
		local zombie = g_arena:get(math.random(1, numplayers))
		
		-- If he's not in spec and not already a zombie
		if (zombie:spectator() == false) and (zombie:getVehicle():vehicletypeid() < 100) then
			-- Turn him
			zombie:team_change("Zombies", "")
			ChooseZombie(zombie)

			-- Warp zombies anywhere
			zombie:warp(2400, 2608, 4800)
		else
			-- We'll have to try again
			x = x - 1
		end
	end
end	

function Arena_OnGameEnd()
	-- Unlock the arena
	g_arena:lock(false)
	g_arena:message("Game is about to start... enter the game now to play.")

	g_bGameRunning = false
end

function Player_OnDeath(killer, victim)
	-- If the game isn't running, we don't want to do any of the other dynamics
	if g_bGameRunning == false then
		return
	end

	-- Check if the victim is a marine	(isn't a zombie)
	if (victim:getVehicle():vehicletypeid() < 20) then
		-- We want to turn the player into a zombie
		victim:team_change("Zombies", "")
		ChooseZombie(victim)
	
		-- Give him his crown back
		victim:setcrown(true, 0)

		-- Are we down to one marine yet?
		local marineteam = team_fromname(g_arena, "Marines")
		
		if marineteam:exists() then
			-- Look to see how many players are actually left playing
			local nummarines = 0
			local winner

			for x = 1, marineteam:num() do
				if marineteam:get(x):spectator() == false then
					nummarines = nummarines + 1
					winner = marineteam:get(x)
				end
			end

			-- If there is only one surviving marine
			if nummarines == 1 then
				-- Break the news!
				g_arena:message(winner.m_name .. " was the last marine standing! Celebrate!")

				-- Let him celebrate :)
				winner:setVehicle(50)

				local zombieteam = team_fromname(g_arena, "Zombies")

				-- Take the crowns from all the zombies
				if zombieteam:exists() then
					for x = 1, zombieteam:num() do
						zombieteam:get(x):setcrown(false, 0)
					end
				end				
			end
		end
	-- If the victim is a zombie
	elseif (victim:getVehicle():vehicletypeid() >= 100) then
		-- Give him his crown back
		victim:setcrown(true, 0)

		-- Make him a random class
		ChooseZombie(victim)

		-- If the killer is a marine..
		if (killer:getVehicle():vehicletypeid() < 20) then
			-- Get his zombie kills
			local zombiekills = killer:getstat(0)
			zombiekills = zombiekills + 1

			-- Is he ready for an upgrade?
			if (zombiekills == 2) then
				killer:setVehicle(11)
			elseif (zombiekills == 4) then
				killer:setVehicle(12)
			elseif (zombiekills == 6) then
				killer:setVehicle(13)
			end

			killer:setstat(0, zombiekills)
		end
	end
end