--DESCRIPTION: [TEXT$="Hello"]
--DESCRIPTION: [XPOS=50]
--DESCRIPTION: [YPOS=50]
--DESCRIPTION: [RANGE=1000]
--DESCRIPTION: [SIZE=3(1,5)]
--DESCRIPTION: [RED=255(0,255)]
--DESCRIPTION: [GREEN=255(0,255)]
--DESCRIPTION: [BLUE=255(0,255)]

function local_prompt_properties(e, text, xpos,ypos, range, size, red,green,blue)
	local lp = g_local_prompt[e]
	lp.text = text 
	lp.xpos = xpos
	lp.ypos = ypos
	lp.range = range
	lp.size = size 
	lp.red = red 
	lp.green = green
	lp.blue = blue
end 

g_local_prompt = {}
function local_prompt_init(e)
	g_local_prompt[e] = {}
	local_prompt_properties(e, "hello", 50,50, 1000, 3, 255,255,255)
end 

function local_prompt_main(e)
	local lp = g_local_prompt[e]
	PromptLocalPosition(e, lp.text, lp.xpos, lp.ypos, lp.range, lp.size, lp.red,lp.green,lp.blue)
end

function PromptLocalPosition(e, txt, ox,oy, rng, size, r,g,b)
	local function PointAtPlayer(i)
		local x = g_PlayerPosX - g_Entity[i]['x']
		local z = g_PlayerPosZ - g_Entity[i]['z']
		local angle = math.atan2( z , x )
		angle = angle + (-90.0*0.0174533)
		return angle
	end
	
	local dist = GetPlayerDistance(e)
	if dist < rng then 	
		-- work out the angle of the player facing vs the angle to the object
		local angle = PointAtPlayer(e) + math.rad(g_PlayerAngY)
		local anglex = g_PlayerAngY - GetAngleFromPointToPoint(g_PlayerPosX,g_PlayerPosZ, g_Entity[e]['x'],g_Entity[e]['z'])	
		-- if the object is to the left we need to go negative in x
		if anglex > 180 then 
			anglex = anglex - 360
		elseif anglex < -180 then 
			anglex = anglex + 360
		end
		-- take the distance into account so closer objects get less effected
		local distx = dist / rng * 0.01	
		local ex,ey = g_Entity[e].x, g_Entity[e].y
		local textx = (distx + anglex) * -1		
		textx = textx + ox
		local texty = oy + (g_PlayerPosY - ey) * 0.125
		-- need to take player x angle into account
		local pax = g_PlayerAngX
		-- looking up
		if pax >= 280 then 
			texty = texty + ((360 - g_PlayerAngX) * 2)
		-- looking down
		else 
			texty = texty + (g_PlayerAngX * -1.2)
		end
		--Prompt("textx = "..textx.." , texty = "..texty.." pax = "..g_PlayerAngX)
		-- check if the text will be on screen
		if textx >= 0 and textx <= 100 then
			if texty >= 0 and texty <= 100 then 
				--TextCenterOnXColor(x,y,size,txt,r,g,b)
				TextCenterOnXColor(textx,texty,	size, txt, r,g,b)
			end
		end
	end
end

function GetAngleFromPointToPoint(x1,z1, x2,z2)
	local destx = x2 - x1
	local destz = z2 - z1
	local angle = math.atan2(destx,destz)
	angle = angle * (180.0 / math.pi)
	if angle < 0 then
		angle = 360 + angle
	elseif angle > 360 then
		angle = angle - 360
	end
	return angle
end