Better Bum Friend

local Mod = RegisterMod("betterbumfriend", 1)
local game = Game()

function Mod:onInit()
	local player = Isaac.GetPlayer(0);
	if game:GetFrameCount() == 1 then--
		-- spawn in if you want to
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_BLOODY_PENNY, Vector(350, 200), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_ROTTEN_PENNY, Vector(300, 250), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_BUTT_PENNY, Vector(350, 150), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_FLAT_PENNY, Vector(250, 200), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_COUNTERFEIT_PENNY, Vector(350, 250), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_TRINKET, TrinketType.TRINKET_BURNT_PENNY, Vector(250, 250), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_COLLECTIBLE, CollectibleType.COLLECTIBLE_BUM_FRIEND, Vector(300, 200), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_COLLECTIBLE, CollectibleType.COLLECTIBLE_PAGEANT_BOY, Vector(550, 400), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_COLLECTIBLE, CollectibleType.COLLECTIBLE_PAGEANT_BOY, Vector(550, 500), Vector(0,0), player)
		-- Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_COLLECTIBLE, CollectibleType.COLLECTIBLE_PAGEANT_BOY, Vector(550, 600), Vector(0,0), player)
	end
end
Mod:AddCallback(ModCallbacks.MC_POST_PEFFECT_UPDATE, Mod.onInit)



function Mod:onPickup(Bum)
	local player = Isaac.GetPlayer(0)
	local entities = Isaac.GetRoomEntities()
    	local rng = player:GetCollectibleRNG(CollectibleType.COLLECTIBLE_BUM_FRIEND)
    	local roll = rng:RandomInt(100)


    	if player:HasCollectible(CollectibleType.COLLECTIBLE_BUM_FRIEND) then
        	-- we check all entities in the room
        	for j = 1, #entities do
            	-- collision detection
            		if entities[j].Type == EntityType.ENTITY_PICKUP
            		and (Bum.Position - entities[j].Position):Length() < Bum.Size + entities[j].Size
            		then
                		if entities[j]:GetSprite():IsPlaying("Collect")
                		and entities[j]:GetData().Picked == nil then
                    			entities[j]:GetData().Picked = true
                   	 		-- pickup specific action
                    			if entities[j].Variant == PickupVariant.PICKUP_COIN then
                        			if entities[j].SubType == CoinSubType.COIN_PENNY then
                            				-- Penny Trinkets synergies
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BLOODY_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BLOODY_PENNY then
                                				if roll < 50 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_HEART, HeartSubType.HEART_HALF, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BURNT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BURNT_PENNY then
                                				if roll < 50 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_BOMB, BombSubType.BOMB_NORMAL, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_FLAT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_FLAT_PENNY then
                                				if roll < 50 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_KEY, KeySubType.KEY_NORMAL, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BUTT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BUTT_PENNY then
                                				if roll < 50 then
                                    					Isaac.GridSpawn(GridEntityType.GRID_POOP, 0, entities[j].Position, true)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_ROTTEN_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_ROTTEN_PENNY then
                                				if roll < 50 then
                                    					Isaac.Spawn(EntityType.ENTITY_FAMILIAR, FamiliarVariant.BLUE_FLY, 0, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_COUNTERFEIT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_COUNTERFEIT_PENNY then
                                				if roll < 50 then
                                    					player:AddCoins(1)
                                				end
                            				end
                        			end
                        			if entities[j].SubType == CoinSubType.COIN_NICKEL then
                           				-- Penny Trinkets synergies
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BLOODY_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BLOODY_PENNY then
                                				if roll < 75 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_HEART, HeartSubType.HEART_HALF, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BURNT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BURNT_PENNY then
                                				if roll < 75 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_BOMB, BombSubType.BOMB_NORMAL, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_FLAT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_FLAT_PENNY then
                                				if roll < 75 then
                                    					Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_KEY, KeySubType.KEY_NORMAL, entities[j].Position, Vector(0,0), Bum)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BUTT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BUTT_PENNY then
                                				if roll < 75 then
                                    					Isaac.GridSpawn(GridEntityType.GRID_POOP, 0, entities[j].Position, true)
                                				end
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_ROTTEN_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_ROTTEN_PENNY then
                                    				Isaac.Spawn(EntityType.ENTITY_FAMILIAR, FamiliarVariant.BLUE_FLY, 0, entities[j].Position, Vector(0,0), Bum)
                              				end
                        			end
                        			if entities[j].SubType == CoinSubType.COIN_DIME then
                            				-- Penny Trinkets synergies
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BLOODY_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BLOODY_PENNY then
                                    				Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_HEART, HeartSubType.HEART_HALF, entities[j].Position, Vector(0,0), Bum)
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BURNT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BURNT_PENNY then
                                    				Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_BOMB, BombSubType.BOMB_NORMAL, entities[j].Position, Vector(0,0), Bum)
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_FLAT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_FLAT_PENNY then
                                    				Isaac.Spawn(EntityType.ENTITY_PICKUP, PickupVariant.PICKUP_KEY, KeySubType.KEY_NORMAL, entities[j].Position, Vector(0,0), Bum)
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_BUTT_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_BUTT_PENNY then
                                    				Isaac.GridSpawn(GridEntityType.GRID_POOP, 0, entities[j].Position, true)
                            				end
                            				if player:GetTrinket(0) == TrinketType.TRINKET_ROTTEN_PENNY
                            				or player:GetTrinket(1) == TrinketType.TRINKET_ROTTEN_PENNY then
                                    				Isaac.Spawn(EntityType.ENTITY_FAMILIAR, FamiliarVariant.BLUE_FLY, 0, entities[j].Position, Vector(0,0), Bum)
                            				end
                        			end
                        			if entities[j].SubType == CoinSubType.COIN_LUCKYPENNY then
                            				player.Luck = player.Luck + 1
                        			end
                    			end
                		end
            		end
        	end
	end
end
Mod:AddCallback(ModCallbacks.MC_FAMILIAR_UPDATE, Mod.onPickup, FamiliarVariant.BUM_FRIEND)