報(bào)錯(cuò)了，錯(cuò)誤信息看不懂
[LUA-print] [string "src/app/Body.lua"]:27: attempt to index local 'node' (a number value)
stack traceback:
? ? ? ? [string "src/framework/functions.lua"]:336: in function 'new'
? ? ? ? [string "src/app/Snake.lua"]:28: in function 'Grow'
? ? ? ? [string "src/app/Snake.lua"]:12: in function 'ctor'
? ? ? ? [string "src/framework/functions.lua"]:336: in function 'new'
? ? ? ? [string "src/app/scenes/MainScene.lua"]:10: in function 'onEnter'
? ? ? ? [string "src/framework/cocos2dx/NodeEx.lua"]:143: in function 'listener_'? ? ??
????????[string "src/framework/cocos2dx/NodeEx.lua"]:428: in function 'EventDispatcher'
? ? ? ? [string "src/framework/cocos2dx/NodeEx.lua"]:271: in function <[string "src/framework/cocos2dx/NodeEx.lua"]:270>
2016-08-02
問題解決沒有，我也和你出現(xiàn)了差不多的錯(cuò)誤
2017-01-25
求問如何解決的。。跟著老師代碼一模一樣。但是沒有出現(xiàn)body
2016-05-07
其實(shí)我也是新手，但是我看了一下，它好像是說你的node給了一個(gè)數(shù)值，你可以去MainScene那看一下snake的創(chuàng)建是不是self.snake = Snake.new(self)，大概是這個(gè)原因吧
2016-05-07
local Snake = class("Snake")
local Body = require "app.Body"
local cInitLen = 3
function Snake:ctor( node )
self.BodyArray = {}
self.node = node
self.MoveDir = "left"
for i=1,cInitLen do
self:Grow(i ==1)
end
end
function Snake:GetTailGrid()
if #self.BodyArray == 0 then
return 0,0
end
local tail = self.BodyArray[#self.BodyArray]
return tail.X,tail.Y
end
function Snake:Grow( isHead )
local tailX,tailY = self:GetTailGrid()
local body = Body:new(self,tailX,tailY,self.node,isHead)
table.insert(self.BodyArray,body)
end
local function OffsetGridByDir( x,y,dir )
if dir == "left" then
return x-1,y
elseif dir == "right" then
return x+1,y
elseif dir == "up" then
return x,y-1
elseif dir == "down" then
return x,y+1
end
print("unknown dir",dir)
return x,y
end
function Snake:Update()
if #self.BodyArray == 0 then
return 0,0
end
for i = #self.BodyArray,1,-1 do
local body = self.BodyArray[i]
if i == 1 then
body.X,body.Y = OffsetGridByDir(body.X,body.Y,self.MoveDir)
else
local front = self.BodyArray[i-1]
body.X,body.Y = front.X,front.Y
end
body:Update()
end
end
return Snake
2016-05-07
local Body = class("Body")
local cGridSize = 33
local scaleRate = 1/display.contentScaleFactor
function Grid2Pos( x,y )
local visibleSize = cc.Director:getInstance():getVisibleSize()
local origin = cc.Director:getInstance():getVisibleOrigin()
local finalX = origin.x+visibleSize.width/2+x*cGridSize*scaleRate
local finalY = origin.y+visibleSize.height/2+y*cGridSize*scaleRate
return finalX,finalY
end
function Body:ctor( snake,x,y,node,isHead )
self.snake = snake
self.X = x
self.Y = y
if ishead then
self.sp = cc.Sprite:create("head_l.png")
else
self.sp = cc.Sprite:create("body.png")
end
node:addChild(self.sp)
self:Update()
end
function Body:Update()
local posx,posy = Grid2Pos(self.X,self.Y)
self.sp:setPosition(posx,posy)
end
return Body