eventListener don't work with a module

espace3d · January 18, 2016, 1:09pm

hi,

i don’t understand why my eventlistener don’t work in this case. I have several file from the same structure and in this case with the event that don’t work… what i’m doing wrong ?

thanks for your help.

--viseur.lua local viseur={} local viseur\_mt = { \_\_index = viseur } --set metatable -------------------------------------------------------------------------------- -- public function -------------------------------------------------------------------------------- function viseur.draw( group,posx,posy,x,y ) &nbsp;&nbsp; &nbsp;local e={} --e for viseurlua &nbsp;&nbsp; &nbsp;e.body=display.newRect(group,posx,posy,x,y) &nbsp;&nbsp; &nbsp;e.body:setFillColor(1,0,0) &nbsp;&nbsp; &nbsp;e.body.isVisible=false &nbsp;&nbsp; &nbsp;return setmetatable ( e,viseur\_mt ) end function viseur:follow(ev) --ev for event &nbsp;&nbsp; &nbsp;if ev.phase == "began" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;self.body.isVisible=true &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;self.body.x,self.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase == "moved" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;self.body.x,self.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase =="ended" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;self.body.isVisible=false &nbsp;&nbsp; &nbsp;end end return viseur

--main.lua local viseur=require("viseur") local viseurs local backgrounds =.... local backgroundGroup = display.newGroup() local function drawViseur() &nbsp;&nbsp; &nbsp;viseurs=viseur.draw(backgroundGroup,100,100,50,50) end drawViseur() backgrounds.body:addEventListener( "touch",function() viseurs:follow(event) end) --backgrounds.body works - i don't put the example file in the code not to confuse

espace3d · January 19, 2016, 7:43am

I do not understand is that the above example does not work while it yes … it is nevertheless the same principle

--viseur.lua local viseur={} local viseur\_mt = { \_\_index = viseur } --set metatable -------------------------------------------------------------------------------- -- public function -------------------------------------------------------------------------------- function viseur.draw( group,posx,posy,x,y ) &nbsp;&nbsp; &nbsp;local e={} --e for viseurlua &nbsp;&nbsp; &nbsp;e.body=display.newRect(group,posx,posy,x,y) &nbsp;&nbsp; &nbsp;e.body:setFillColor(1,0,0) &nbsp;&nbsp; &nbsp;e.body.isVisible=false e.follow=function(ev) &nbsp;if ev.phase == "began" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.isVisible=true &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.x,e.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase == "moved" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.x,e.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase =="ended" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.isVisible=false &nbsp;&nbsp; &nbsp;end end &nbsp;&nbsp; &nbsp;return setmetatable ( e,viseur\_mt ) end return viseur ----------------------------------------------------------------------------------- --main.lua local viseur=require("viseur") local viseurs local backgrounds =.... local backgroundGroup = display.newGroup() local function drawViseur() &nbsp;&nbsp; &nbsp;viseurs=viseur.draw(backgroundGroup,100,100,50,50) end drawViseur() backgrounds.body:addEventListener( "touch",viseurs.follow) --backgrounds.body works - i don't put the example file in the code not to confuse

Alan_PlantPot · January 19, 2016, 1:21pm

try

backgrounds.body:addEventListener( "touch",viseurs:follow)

instead of

backgrounds.body:addEventListener( "touch",viseurs.follow) &nbsp;

(there is a : instead of a . when calling viseurs:follow

espace3d · January 20, 2016, 8:01am

hi Alan Quiz Tix,

thanks for your response but i have tried yet before and i have this error : function argument exepected near “(”

…

espace3d · January 19, 2016, 7:43am

I do not understand is that the above example does not work while it yes … it is nevertheless the same principle

--viseur.lua local viseur={} local viseur\_mt = { \_\_index = viseur } --set metatable -------------------------------------------------------------------------------- -- public function -------------------------------------------------------------------------------- function viseur.draw( group,posx,posy,x,y ) &nbsp;&nbsp; &nbsp;local e={} --e for viseurlua &nbsp;&nbsp; &nbsp;e.body=display.newRect(group,posx,posy,x,y) &nbsp;&nbsp; &nbsp;e.body:setFillColor(1,0,0) &nbsp;&nbsp; &nbsp;e.body.isVisible=false e.follow=function(ev) &nbsp;if ev.phase == "began" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.isVisible=true &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.x,e.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase == "moved" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.x,e.body.y=ev.x,ev.y &nbsp;&nbsp; &nbsp;elseif ev.phase =="ended" then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;e.body.isVisible=false &nbsp;&nbsp; &nbsp;end end &nbsp;&nbsp; &nbsp;return setmetatable ( e,viseur\_mt ) end return viseur ----------------------------------------------------------------------------------- --main.lua local viseur=require("viseur") local viseurs local backgrounds =.... local backgroundGroup = display.newGroup() local function drawViseur() &nbsp;&nbsp; &nbsp;viseurs=viseur.draw(backgroundGroup,100,100,50,50) end drawViseur() backgrounds.body:addEventListener( "touch",viseurs.follow) --backgrounds.body works - i don't put the example file in the code not to confuse

Alan_PlantPot · January 19, 2016, 1:21pm

try

backgrounds.body:addEventListener( "touch",viseurs:follow)

instead of

backgrounds.body:addEventListener( "touch",viseurs.follow) &nbsp;

(there is a : instead of a . when calling viseurs:follow

espace3d · January 20, 2016, 8:01am

hi Alan Quiz Tix,

thanks for your response but i have tried yet before and i have this error : function argument exepected near “(”

…