addHook("PlayerThink", function(player) -- runs once per player each frame
	if player.shouldairwalk == nil then
		player.shouldairwalk = false
	end 
	
	if player.airwalk == nil then
		player.airwalk = 0*TICRATE
	end
	
	if player.airwalked == nil then
		player.airwalked = false
	end
	
	if player.willtakedamage == nil then
		player.willtakedamage = false
	end
	
	if player.shouldntairwalk == nil then
		player.shouldntairwalk = false
	end
	
	if player.falling == nil then
		player.falling = false
	end
	
	if player.secondchance == nil then
		player.secondchance = 0*TICRATE
	end
	
	if player.stopaction == nil then
		player.stopaction = false
	end
	
	if (player.mo.eflags & MFE_UNDERWATER)
	or (player.mo.eflags & MFE_SPRUNG)
	or player.mo.state == S_PLAY_ROLL
	or player.mo.state == S_PLAY_PAIN
	or (player.pflags & PF_THOKKED)
	or (player.playerstate == PST_DEAD) then
	player.falling = false
	player.willtakedamage = false
	player.shouldntairwalk = true
	end
	
	if (P_IsObjectOnGround(player.mo) == false)
	and player.shouldairwalk == true
	and not (player.pflags & PF_JUMPED) then
	player.airwalk = 1*TICRATE
	player.shouldairwalk = false
	end
	
	if (P_IsObjectOnGround(player.mo) == true) then
	player.shouldairwalk = true
	player.airwalk = 0*TICRATE
	player.airwalked = false
	player.shouldntairwalk = false
	player.falling = false
	player.secondchance = 0*TICRATE
	player.stopaction = false
	end
	
	if (P_IsObjectOnGround(player.mo) == false)
	and player.airwalk > -1 then
	player.airwalk = $ - 1
	end
	
	if not P_IsObjectOnGround(player.mo)
	and player.secondchance > -1 then
	player.secondchance = $ - 1
	end
	
	if player.airwalk > 0
	and player.mo.z/FRACUNIT - player.mo.floorz/FRACUNIT > 128
	and not (player.pflags & PF_JUMPED)
	and not (player.pflags & PF_THOKKED)
	and player.shouldntairwalk == false then
	player.airwalked = true
	player.mo.state = S_PLAY_RUN
	player.mo.momz = 0
	end
	
	if player.airwalk > 0
	and player.stopaction == false
	and player.mo.z/FRACUNIT - player.mo.floorz/FRACUNIT < 128
	and not (player.pflags & PF_JUMPED)
	and not (player.pflags & PF_THOKKED)
	and player.airwalked == false
	and (P_IsObjectOnGround(player.mo) == false) then
	player.secondchance = 2
	player.stopaction = true
	end
	
	if player.secondchance > 0 
	and player.mo.z/FRACUNIT - player.mo.floorz/FRACUNIT > 128
	and not (player.pflags & PF_JUMPED)
	and not (player.pflags & PF_THOKKED)
	and player.shouldntairwalk == false then
	player.airwalk = 1*TICRATE
	end
	
	if player.airwalk < 0
	and not (player.pflags & PF_JUMPED)
	and not (player.pflags & PF_THOKKED)
	and player.shouldntairwalk == false
	and player.mo.z/FRACUNIT - player.mo.floorz/FRACUNIT > 128
	and player.falling == false then
	player.mo.momz = 10*FRACUNIT
	player.falling = true
	player.mo.state = S_PLAY_DEAD
	S_StartSound(player.mo, sfx_s3k51)
	end
	
	if player.airwalk > 0
	and player.airwalk <= 7
	and (player.cmd.buttons & BT_JUMP)
	and player.shouldntairwalk == false then
	player.shouldntairwalk = true
	player.mo.momz = 10*FRACUNIT
	player.pflags = $|PF_JUMPED|PF_THOKKED
	player.mo.state = S_PLAY_JUMP
	S_StartSound(player.mo, sfx_jump)
	end
	
	if player.falling == true
	and player.mo.momz > -25*FRACUNIT then
	player.mo.momz = $ - 1*FRACUNIT/2
	end
	
	if player.falling == true
	and player.mo.momz < -25*FRACUNIT then
	player.willtakedamage = true
	end
	
	if player.willtakedamage == true
	and player.mo.momz > 0 then
	player.willtakedamage = false
	player.falling = false
	player.shouldntairwalk = true
	end
	
	if player.willtakedamage == true
	and (P_IsObjectOnGround(player.mo) == true) then
	P_DamageMobj(player.mo)
	S_StartSound(player.mo, sfx_doord2)
	player.willtakedamage = false
	player.mo.momz = -1*FRACUNIT
	end
end)