rayCast Error!

Getting Started Newbie Questions
#1

Help me… where is the error!!

error: main.lua:42:attempt to index local ‘hits’ (a nil value)

display.setStatusBar( display.HiddenStatusBar ) W= display.contentWidth H= display.contentHeight     local physics = require ("physics") physics.start()   local sX = 284 local sY = 1024   local eX = 484 local eY = 1024     local bg = display.newImage("bg.png") bg:scale( 1.4,1.4 )   local circle = display.newCircle(W/2,H/2-500,100) circle:setFillColor(0,0,0) physics.addBody(circle,{bounce = 0.5,radius= 100})   local ground = display.newRect(0,1024,284,10) ground:setFillColor(0,0,0) physics.addBody(ground,"static",{})   local ground1 = display.newRect(484,1024,284,10) ground1:setFillColor(0,0,0) physics.addBody(ground1,"static",{})     local function checkForHit(object, from\_x, from\_y, to\_x, to\_y) local hits = physics.rayCast( from\_x, from\_y, to\_x, to\_y )  if hits[1].object == circle then print ("hit")       end end   Runtime:addEventListener( "enterFrame", function() checkForHit(circle, sX, sY, eX, eY )end  )  
#2

I assume this is line #42 in your actual code?

[lua]

if hits[1].object == circle then

[/lua]

You should probably conditionally check if there are any hits, as so:

[lua]

if ( hits and #hits > 0 and hits[1].object == circle ) then

[/lua]

Please try this and see if it solves the issue.

Brent

#3

I assume this is line #42 in your actual code?

[lua]

if hits[1].object == circle then

[/lua]

You should probably conditionally check if there are any hits, as so:

[lua]

if ( hits and #hits > 0 and hits[1].object == circle ) then

[/lua]

Please try this and see if it solves the issue.

Brent