--Freezing by pressing key E
-- by NikkoSin
--
-- mods and rems by J_C
-- these changes are to give learning options..ideas..

-- to use-  can only attach to one entity..
-- attach to rock or wall piller any static entity
-- AI System
-- Main = freeze.lua
--
-- then change it to non-static in the properties tab in the editor
-- Static Mode = No
-- and make sure the physics always active is set to yes..
-- Always Active = Yes
-- don't forget Press the [Apply Changes] buton at bottom of dialog...

-- I have split the code into 2 options or states
-- AI has 2 states
AI_UNFROZEN = 0;
AI_FROZEN = 1;
-- at start
AI_state = AI_UNFROZEN;

-- key press reset - needed or we could get repeated key press
local pressed = 0

-- 1000 ticks = 1 second
-- 4000 ticks = 4 seconds
local waitTm = 4000

-- this function is called only once at very start 
-- used to initialize variables 
function freeze_init(e)

end

-- this function is called every FPS from main GG loop
function freeze_main(e)
    
	-- check our states
    if AI_state == AI_UNFROZEN then
	    do_unfrozen(e);
	elseif AI_state == AI_FROZEN then
	    do_frozen(e)
	end
	
	-- reset key press
	if g_KeyPressE == 0 then
		pressed = 0
	end
	
end

function do_unfrozen(e)

	if g_KeyPressE == 1 and pressed == 0 then
	    -- reset the timer to zero
		StartTimer(e) 
		-- freeze the AI
		FreezeAI()
		-- change state to frozen
		AI_state = AI_FROZEN;
	end
    Prompt("AI unfrozen")
end

function do_frozen(e)
    -- check timer
	timer = GetTimer(e)
	-- when checking time never do only == as you could miss the time
	-- always use >=   greater then or = to 
	if timer >= waitTm then
	    -- ok our time has past 
		-- so unfreeze the AI
		UnFreezeAI()
		-- and set our state to unfrozen
		AI_state = AI_UNFROZEN;
	end
    Prompt("AI Frozen "..timer)	
end