local event = require 'utils.event' 
local game = require 'utils.game'
event.add(defines.events.on_entity_damaged, function(event)
	local entity = event.entity
	if not entity.valid then return end
	if event.entity.name ~= 'character' then return end
  	local player = game.get_player(event.entity.player)
	if not player.character then return end
	if player.character then
		if player.character.health == nil then return end
		local index = player.index
		local health = math.ceil(player.character.health)
		if global.player_health == nil then global.player_health = {} end
		if global.player_health[index] == nil then global.player_health[index] = health end
		if global.player_health[index] ~= health then
			if health < global.player_health[index] then
				local text = health..' (-'..math.floor(event.final_damage_amount)..')'
				if health > 200 then
					player.surface.create_entity{name="flying-text", color={b = 0.2, r= 0.1, g = 1, a = 0.8}, text=text, position= {player.position.x, player.position.y-2}}
				elseif health > 100 then
					player.surface.create_entity{name="flying-text", color={r = 1, g = 1, b = 0}, text=text, position= {player.position.x, player.position.y-2}}
				else
					player.surface.create_entity{name="flying-text", color={b = 0.1, r= 1, g = 0, a = 0.8}, text=text, position= {player.position.x, player.position.y-2}}
				end
			end
			global.player_health[index] = health
		end
    end
end)