The keyboard isn't affecting it at all

gistfile1.lua

function love.load() 
	kevin = {}
	kevin.hearts = 3
	kevin.attack = "nothing"
	kevin.charge = 1
	kevin.decided = false
	enemy = {}
	enemy.hearts = 3
	enemy.attack = "nothing"
	enemy.attack_phase = 1
	enemy.charge = 1
	phase = "decide"
	attacks = {"apply", "block", "charge", "strike"}
	keyboardcs = {"a","b","c","space"}
	dtotal = 0
end

function love.keypressed(key, unicode)
	-- Kevin logic for decision 
	if phase == "decide" and decided == false then
		for i = 1, 4 do
			if key ==  keyboardcs[i] then
				kevin.attack = attacks[i]
				kevin.decided = true
			end
		end
	end
end

function love.update(dt)
	dtotal = dtotal + dt
	-- decision phase.
	if phase == "decide" then
		--enemy logic
		for i = 1, 4 do
			if enemy.attack_phase == i then
				enemy.attack = attacks[i]
			end
		end
		--phase logic for decision
		if dtotal > 3 then
			dtotal = 0
			phase = "fight"
		end			
	end
	-- fighting phase.
	if phase == "fight" then
		if dtotal > 3 then
			dtotal = 0
			phase = "decide"
			kevin.attack = "nothing"
			kevin.decided = false
			enemy.attack = "nothing"
			enemy.attack_phase = enemy.attack_phase + 1
		end	
	end
	--enemy logic
	if enemy.attack_phase > 3 then
		enemy.attack_phase = 1
	end
end

function love.draw()
	love.graphics.print(phase,100,100)
	love.graphics.print(kevin.attack,100,150)
	love.graphics.print(enemy.attack,100,200)
end