love2d-tank/Game/UpdateGame.lua

function UpdateGame(dt)
	--WindField
	World:update(dt)

	local max = math.max

	KeyPressTime1 = max(0, KeyPressTime1 - dt)
	if KeyPressTime1 <= 0 then
		EnableKeyPress1 = true
	end

	KeyPressTime2 = max(0, KeyPressTime2 - dt)
	if KeyPressTime2 <= 0 then
		EnableKeyPress2 = true
	end
	for i, v in ipairs(Bullets1) do
		v:update(dt)
		if v.y < 0 then --top of screen
			table.remove(Bullets1, i)
			v.collider:destroy()
		elseif v.y > love.graphics.getHeight() then --bottom of screen
			table.remove(Bullets1, i)
			v.collider:destroy()
		end
		if v.collider:enter("Player2") then
			print("Player1 hit Player2!")
			table.remove(Bullets1, i)
			v.collider:destroy()
			if UserPlayer1.health > 0 then
				UserPlayer1.health = UserPlayer1.health - 1
			end
		end

		if v.collider:enter("Player1") then
			print("Player 1 hit themselves!")
			table.remove(Bullets1, i)
			v.collider:destroy()
			if UserPlayer1.health > 0 then
				UserPlayer1.health = UserPlayer1.health - 1
			end
		end
	end

	for i, v in ipairs(Bullets2) do
		v:update(dt)
		if v.y < 0 then --top of screen
			table.remove(Bullets2, i)
			v.collider:destroy()
		elseif v.y > love.graphics.getHeight() then --bottom of screen
			table.remove(Bullets2, i)
			v.collider:destroy()
		end

		if v.collider:enter("Player1") then
			print("Player2 hit Player1!")
			table.remove(Bullets2, i)
			v.collider:destroy()
			if UserPlayer2.health > 0 then
				UserPlayer2.health = UserPlayer2.health - 1
			end
		end
		if v.collider:enter("Player2") then
			print("Player 2 hit themselves!")
			table.remove(Bullets2, i)
			v.collider:destroy()

			if UserPlayer2.health > 0 then
				UserPlayer2.health = UserPlayer2.health - 1
			end
		end
	end

	UserPlayer1:update(dt)
	UserPlayer2:update(dt)
end