-- LUA Script - precede every function and global member with lowercase name of script + '_main'
local U = require "scriptbank\\utillib"

local rad  = math.rad
local sub  = string.sub
local find = string.find

local pad = {}

local function GetArgs( str, sep )
    local sep = sep or ','
    local pos = 1
    local list = {}
    local length = #str
      
    while pos < length + 1 do
        local nextPos = find( str, sep, pos + 1 ) or length
        if nextPos < length then
            list[ #list + 1 ] = sub( str, pos, nextPos - 1 )
        else
            list[ #list + 1 ] = sub( str, pos, nextPos )
            break
        end
        pos = nextPos + 1
    end
    return list
end

function jump_pad_init_name( e, name )
	Include( "utillib.lua" )
	
	pad[ e ] = { state = 'idle', name = name }
end

local lastTime = 0
local tDiff    = 0
local controlEnt = nil
local gravity = -0.1

function jump_pad_main(e)
	if controlEnt == nil then controlEnt = e end
	
	local timeNow = g_Time
	
	if controlEnt == e then
		if timeNow > lastTime + 20 then
			tDiff = ( timeNow - lastTime ) / 20
			lastTime = timeNow
		end
	end

	local thisPad = pad[ e ]
	
	if thisPad == nil then return end
	
	if thisPad.args == nil then 
		thisPad.args = GetArgs( thisPad.name )
		
		thisPad.yc = tonumber( thisPad.args[ 2 ] ) or 10
		thisPad.zc = tonumber( thisPad.args[ 3 ] ) or 10
		thisPad.tp = tonumber( thisPad.args[ 4 ] ) or 1500
	end
	
	if U.PlayerCloserThan( e, 80 ) and thisPad.state == 'idle' then
		thisPad.state = 'active'
		local xa, ya, za = rad( g_PlayerAngX ), rad( g_PlayerAngY ), rad( g_PlayerAngZ )

		thisPad.vx, thisPad.vy, thisPad.vz = U.Rotate3D( 0, thisPad.yc, thisPad.zc, xa, ya, za )
		thisPad.timer = timeNow + thisPad.tp 
		SetGamePlayerControlGravityActive( 0 )
	end
	
	if thisPad.state == 'active' then
		if timeNow < thisPad.timer then
		
			local px, py, pz = g_PlayerPosX, g_PlayerPosY, g_PlayerPosZ
			local nx, ny, nz = px + thisPad.vx * tDiff, 
			                   py + thisPad.vy * tDiff,
							   pz + thisPad.vz * tDiff
			-- check for collision
			if RayTerrain( px, py, pz, nx, ny, nz ) ~= 0 or
			   IntersectAll( px, py, pz, nx, ny, nz, 0 ) ~= 0 then 
				thisPad.state = 'idle'
				SetGamePlayerControlGravityActive( 1 )
			end

			SetFreezePosition( nx, ny, nz )
			TransportToFreezePositionOnly()
			-- fake gravity
			thisPad.vy = thisPad.vy + gravity
		else
			thisPad.state = 'idle'
			SetGamePlayerControlGravityActive( 1 )
		end
	end
end