code

local Mod = RegisterMod("Courage or Cowardice", 1)

------------
-- Global --
------------

-- Global Variables --
local game = Game()
local currentRoom = game:GetRoom()

-- Global Functions --
-- Global Callbacks --

-----------
-- Items --
-----------
local ItemScript = {}
	-- Item Variables --
	local ItemId = {
		-- Passive Items --
		RESILIENCE = Isaac.GetItemIdByName("Resilience"),
		-- Active Items --
		-- Trinkets --
		ADRENALINERUSH = Isaac.GetTrinketIdByName("Adrenaline Rush")
	}
	local ItemCostume = {
		-- Passive Items --
		RESILIENCE = Isaac.GetCostumeIdByPath("gfx/characters/Resilience.anm2")
		-- Active Items --
		-- Trinkets --
	}
	local ItemBonus = {
		-- Passive Items --
		RESILIENCE_DAMAGE = 0.5,
		RESILIENCE_MOVE = 0.1,
		RESILIENCE_RANGE = 1,
		-- Active Items --
		-- Trinkets --
		ADRENALINE_DAMAGE = 1.2, -- Multiplier: +20% damage
		ADRENALINE_MOVE = 1.4 -- Multiplier: +40% speed
	}
	local HasItem = {
		-- Passive Items --
		Resilience = false,
		-- Active Items --
		-- Trinkets --
		AdrenalineRush = false
	}
	local ResilienceProc = false
	local ResilienceStacks = 0

	-- Item Functions --
	function UpdateItems(player) -- Sets HasItem booleans for each item to whether the player has the item
		-- Passive Items --
		HasItem.Resilience = player:HasCollectible(ItemId.RESILIENCE)
		-- Active Items --
		-- Trinkets --
		HasItem.AdrenalineRush = player:HasTrinket(ItemId.ADRENALINERUSH)
	end

	function ItemScript:onPlayerInit(player) -- When player is created (game start or continue)
		UpdateItems(player)
	end

	function ItemScript:onPefUpdate(player)
		-- Beginning of run initialization
		if game:GetFrameCount() == 1 then
			if player:HasCollectible(ItemId.RESILIENCE) and not HasItem.Resilience then
				player:AddNullCostume(ItemCostume.RESILIENCE)
				UpdateItems(player)
			end
		end

		if currentRoom:GetFrameCount() == 1 then -- On entry of a room
			player:AddCacheFlags(CacheFlag.CACHE_DAMAGE) -- Set fire delay cache flag for evaluation
			player:AddCacheFlags(CacheFlag.CACHE_SPEED) -- Set speed cache flag for evaluation
			player:AddCacheFlags(CacheFlag.CACHE_RANGE) -- Set range cache flag for evaluation
			player:EvaluateItems() -- Evaluate player items
			ResilienceStacks = 0 -- Set Resilience stacks to 0
		end
		if currentRoom:GetFrameCount() == 180 then -- 180 frames after entry of room
			if HasItem.AdrenalineRush and not HasItem.Resilience then
				player:AddCacheFlags(CacheFlag.CACHE_DAMAGE) -- Set fire delay cache flag for evaluation
				player:AddCacheFlags(CacheFlag.CACHE_SPEED) -- Set speed cache flag for evaluation
				player:EvaluateItems() -- Evaluate player items
			end
		end

		-- Add resilience costume on acquire
		if player:HasCollectible(ItemId.RESILIENCE) and not HasItem.Resilience then
			player:AddNullCostume(ItemCostume.RESILIENCE)
		end

		UpdateItems(player)
	end

	function ItemScript:onDmg(target, dmg, flags, source, countdown)
		for playerNum = 0, game:GetNumPlayers() do
			local player = game:GetPlayer(playerNum)

			if HasItem.Resilience then
				ResilienceProc = true
				ResilienceStacks = ResilienceStacks + 1
				player:AddCacheFlags(CacheFlag.CACHE_DAMAGE)
				player:AddCacheFlags(CacheFlag.CACHE_RANGE)
				player:AddCacheFlags(CacheFlag.CACHE_SPEED)
				player:EvaluateItems()
				ResilienceProc = false
			end
		end
	end

	function ItemScript:onCache(player, cacheFlag) -- When cache is updated
		local defaultDamage = player.Damage -- Set default damage (to damage when cache is evaluated)
		local defaultMove = player.MoveSpeed -- Set default move speed (to tear rate when cache is evaluated)

		if cacheFlag == CacheFlag.CACHE_DAMAGE then -- If cache is fire delay
			if HasItem.AdrenalineRush then -- If player has Blood Rush trinket
				if currentRoom:GetFrameCount() == 1 then -- If current room has only just been entered
					player.Damage = defaultDamage * ItemBonus.ADRENALINE_DAMAGE -- Increase damage by Adrenaline Rush damage (multiplier)
				end
				if currentRoom:GetFrameCount() == 180 and player.MaxFireDelay > defaultDamage then -- If been in room for 180 frames and damage is more than default damage
					player.Damage = defaultDamage -- Set tear rate to default damage
				end
			end
			if HasItem.Resilience then
				if ResilienceProc then
					player.Damage = player.Damage + (ItemBonus.RESILIENCE_DAMAGE * ResilienceStacks)
				end
				if currentRoom:GetFrameCount() == 1 and ResilienceStacks > 0 then
					player.Damage = player.Damage - (ItemBonus.RESILIENCE_DAMAGE * ResilienceStacks)
				end
			end
		end

		if cacheFlag == CacheFlag.CACHE_RANGE then -- If cache is range
			if HasItem.Resilience then
				if ResilienceProc then
					player.TearHeight = player.TearHeight + (ItemBonus.RESILIENCE_RANGE * ResilienceStacks)
					player.TearFallingSpeed = player.TearFallingSpeed + (ItemBonus.RESILIENCE_RANGE * ResilienceStacks)
				end
				if currentRoom:GetFrameCount() == 1 and ResilienceStacks > 0 then
					player.TearHeight = player.TearHeight - (ItemBonus.RESILIENCE_RANGE * ResilienceStacks)
					player.TearFallingSpeed = player.TearFallingSpeed - (ItemBonus.RESILIENCE_RANGE * ResilienceStacks)
				end
			end
		end

		if cacheFlag == CacheFlag.CACHE_SPEED then -- If cache is speed
			if HasItem.AdrenalineRush then -- If player has Blood Rush trinket
				if currentRoom:GetFrameCount() == 1 then -- If current room has only just been entered
					player.MoveSpeed = defaultMove * ItemBonus.ADRENALINE_MOVE -- Increase movement speed by Blood Rush move speed (multiplier)
				end
				if currentRoom:GetFrameCount() == 180 and player.MoveSpeed > defaultMove then -- If been in room for 180 frames and max move speed is higher than default move speed
					player.MoveSpeed = defaultMove -- Set move speed to default move speed
				end
			end
			if HasItem.Resilience then
				if ResilienceProc then
					player.MoveSpeed = player.MoveSpeed + (ItemBonus.RESILIENCE_MOVE * ResilienceStacks)
				end
				if currentRoom:GetFrameCount() == 1 and ResilienceStacks > 0 then
					player.MoveSpeed = player.MoveSpeed - (ItemBonus.RESILIENCE_MOVE * ResilienceStacks)
				end
			end
		end
	end
-- Item Callbacks --
Mod:AddCallback(ModCallbacks.MC_POST_PLAYER_INIT, ItemScript.onPlayerInit)
Mod:AddCallback(ModCallbacks.MC_POST_PEFFECT_UPDATE, ItemScript.onPefUpdate)
Mod:AddCallback(ModCallbacks.MC_ENTITY_TAKE_DMG, ItemScript.onDmg, EntityType.ENTITY_PLAYER)
Mod:AddCallback(ModCallbacks.MC_EVALUATE_CACHE, ItemScript.onCache)