-- Hedgewars Grenade Training

-- Scripting Example

-- Lines such as this one are comments - they are ignored

-- by the game, no matter what kind of text is in there.

-- It's also possible to place a comment after some real

-- instruction as you see below. In short, everything

-- following "--" is ignored.

---------------------------------------------------------------

-- At first we implement the localization library using loadfile.

-- This allows us to localize strings without needing to think

-- about translations.

-- We can use the function loc(text) to localize a string.

loadfile(GetDataPath() .. "Scripts/Locale.lua")()

-- This variable will hold the number of destroyed targets.

local score = 0

-- This variable represents the number of targets to destroy.

local score_goal = 5

-- This variable controls how many milliseconds/ticks we'd

-- like to wait before we end the round once all targets

-- have been destroyed.

local end_timer = 4000 -- 5000 ms = 5 s

-- This variable is set to true if the game is lost (i.e.

-- time runs out).

local game_lost = false

-- This variable ensures that the death function isn't called

-- repeatedly when game is over.

local team_death = false

-- This variable will point to the hog's gear

local player = nil

-- This variable will grab the time left at the end of the round

local time_goal = 0

-- This is a custom function to make it easier to

-- spawn more targets with just one line of code

-- You may define as many custom functions as you

-- like.

function spawnTarget()

	-- add a new target gear

	gear = AddGear(0, 0, gtTarget, 0, 0, 0, 0)

	-- move it to a random position within 0 and

	-- LAND_WIDTH - the width of the map

	-- move the target to a higher vertical position

	-- to ensure it's not somewhere down below

	x, y = GetGearPosition(gear)

end

-- This function is called before the game loads its

-- resources.

-- It's one of the predefined function names that will

-- be called by the game. They give you entry points

-- where you're able to call your own code using either

-- provided instructions or custom functions.

function onGameInit()

	-- At first we have to overwrite/set some global variables

	-- that define the map, the game has to load, as well as

	-- other things such as the game rules to use, etc.

	-- Things we don't modify here will use their default values.

	-- The base number for the random number generator

	Seed = 1

	-- Game settings and rules

	GameFlags = gfInfAttack + gfOneClanMode 

	-- The time the player has to move each round (in ms)

	TurnTime = 60000

	-- The frequency of crate drops

	CaseFreq = 0

	-- The number of mines being placed

	MinesNum = 0

	-- The number of explosives being placed

	Explosives = 0

	-- The delay between each round

	Delay = 1

	-- The map to be played

	Map = "Battlefield"

	-- The theme to be used

	Theme = "Castle"

	-- Create the player team

	AddTeam(loc("Grenadiers"), 14483456, "Simple", "Island", "Default")

	-- And add a hog to it

	player = AddHog(loc("Nade Boy"), 0, 1, "war_grenadier1")

end

-- This function is called when the round starts

-- it spawns the first target that has to be destroyed.

-- In addition it shows the scenario goal(s).

function onGameStart()

	-- Spawn the first target.

	spawnTarget()

	-- Show some nice mission goals.

	-- Parameters are: caption, sub caption, description,

	-- extra text, icon and time to show.

	-- A negative icon parameter (-n) represents the n-th weapon icon

	-- A positive icon paramter (n) represents the (n+1)-th mission icon

	-- A timeframe of 0 is replaced with the default time to show.

	ShowMission(loc("Grenade Training"), loc("Aiming Practice"), loc("Eliminate all targets before your time runs out.|You have unlimited ammo for this mission."), -amGrenade, 0)

end

function onNewTurn()

	ParseCommand("setweap " .. string.char(amGrenade))

end

-- This function is called every game tick.

-- Note that there are 1000 ticks within one second.

-- You shouldn't try to calculate too complicated

-- code here as this might slow down your game.

function onGameTick20()

	-- If time's up, set the game to be lost.

	-- We actually check the time to be "1 ms" as it

	-- will be at "0 ms" right at the start of the game.

	if TurnTimeLeft < 40 and TurnTimeLeft > 0 and score < score_goal then

		game_lost = true

		-- ... and show a short message.

		ShowMission(loc("Grenade Training"), loc("Aiming Practice"), loc("Oh no! Time's up! Just try again."), -amSkip, 0)

		-- How about killing our poor hog due to his poor performance?

		SetHealth(player, 0)

		-- Just to be sure set the goal time to 1 ms

		time_goal = 1

	end

	-- If the goal is reached or we've lost ...

	if score == score_goal or game_lost then

		-- ... check to see if the time we'd like to

		-- wait has passed and then ...

		if end_timer == 0 then

			-- Override the 'Draw' message with the appropriate message.

			if game_lost then

				AddCaption("Mission lost!", 0xffba00ff,capgrpGameState)

			else

				AddCaption("Mission won!", 0xffba00ff,capgrpGameState)

			end

			-- Remove the team to end the game. Only do this once.

			if team_death == false then

				team_death = true

				ParseCommand("teamgone " .. "Grenadiers")

			end

		else

			-- ... or just lower the timer by 1.

			end_timer = end_timer - 20

			-- Reset the time left to stop the timer

			TurnTimeLeft = time_goal

		end

	end

end

-- This function is called when the game is initialized

-- to request the available ammo and probabilities

function onAmmoStoreInit()

	-- add an unlimited supply of bazooka ammo

	SetAmmo(amGrenade, 9, 0, 0, 0)

end

-- This function is called when a new gear is added.

-- We don't need it for this training, so we can

-- keep it empty.

-- function onGearAdd(gear)

-- end

-- This function is called before a gear is destroyed.

-- We use it to count the number of targets destroyed.

function onGearDelete(gear)

	-- We're only interested in target gears.

	if GetGearType(gear) == gtTarget then

		-- Add one point to our score/counter

		score = score + 1

		-- If we haven't reached the goal ...

		if score < score_goal then

			-- ... spawn another target.

			spawnTarget()

		else

			if not game_lost then

			-- Otherwise show that the goal was accomplished

			ShowMission(loc("Grenade Training"), loc("Aiming Practice"), loc("Congratulations! You've eliminated all targets|within the allowed time frame."), 0, 0)

			-- Also let the hogs shout "victory!"

			PlaySound(sndVictory)

			-- Save the time left so we may keep it.

			time_goal = TurnTimeLeft

			end

		end

	end

end