我是电晕的新手，开始使用示例应用程序学习，在这里我遇到了一个问题，需要一些建议，我将一个对象拖到一个空位置，它位于当前对象之后或之前或上或下 2 个位置，但是当我拖动一个对象时，网格中的最后一个元素（不是空的）变得与拖动的对象相同，这是一个奇怪的错误，我不知道如何解决它。我在这里粘贴代码，请告诉我解决方案。提前致谢
模块（...，package.seeall）函数新（）
local localGroup = display.newGroup()
local gamebg=display.newImageRect("gameBG.png",_W,_H)
gamebg:setReferencePoint(display.centerReferencePoint)
gamebg.x=_W/2
gamebg.y=_H/2
swapButton = {} --A 2D Array
local instance = {}
require "sprite"
level={ 1,0,1,1,0,1,0,
1,1,0,1,1,0,1,
0,1,1,0,0,1,1,
1,0,1,1,0,1,0,
1,1,0,1,1,0,1,
0,1,1,0,0,1,1,
1,1,0,1,0,0,0}
print(level[2])
local tempX=130
local tempY=60
local temp=1;
for i = 0, 6, 1 do
swapButton[i]={}
instance[i]={}
for j=0,6,1 do
print(level[temp+1])
if level[temp]== 1 then
print("true")
instance[i][j]=sprite.newSprite(sprite.newSpriteSet(sprite.newSpriteSheet("fireBall.png",36,36),1,40))
instance[i][j].x=tempX
instance[i][j].y=tempY
instance[i][j].id=math.random ( 49 )
instance[i][j].blendMode="add"
instance[i][j]:prepare()
instance[i][j]:play()
--print (math.random (1,49))
function myTouchListener(event)
local t = event.target
if event.phase == "began" then
display.getCurrentStage():setFocus( t )
--print(display.getCurrentStage( ))
print("************* Began*********")
print(i,j)
t.isFocus = true
-- Store initial position
-- t.x0 = event.x - t.x
-- t.y0 = event.y - t.y
t.x0 = instance[i][j].x
t.y0 = instance[i][j].y
t.x1 = t.x
t.y1 = t.y
print(t.x0)
print(t.y0)
print("t.x1=",t.x1)
print("t.y1=",t.y1)
elseif event.phase=="moved" then
print(instance[i][j].x)
print(instance[i][j].y)
instance[i][j].x=event.x
instance[i][j].y=event.y
t.x=instance[i][j].x
t.y=instance[i][j].y
elseif event.phase == "ended" then
print(instance[i][j].x)
print(instance[i][j].y)
print(i,j)
--nearMe(t)
getFireBall(t,i,j)
print("Here the 2d array after swap")
for l=0,6,1 do
for m=0,6,1 do
print(instance[l][m])
end
end
display.getCurrentStage( ):setFocus( nil );
t.isFocus = false
end
end
function getFireBall(t2,setX,setY)
print(i,j)
print(setX,setY)
print(math.abs(t2.x-t2.x0))
print(math.abs(t2.y-t2.y0))
if (math.abs(t2.x-t2.x0) > 70 and math.abs(t2.x-t2.x0)<90) or (math.abs(t2.y-t2.y0)>70 and math.abs(t2.y-t2.y0)<90)then
if t2.x>t2.x0 and math.abs(t2.y-t2.y0) <= math.abs(t2.x-t2.x0) then
print("Forward")
print("it fixes here")
for p=0, 6 , 1 do
for q=0, 6, 1 do
if instance[setX][setY]~=nil then
if (swapButton[p][q].x==instance[setX][setY].x or (swapButton[p][q].x>=instance[setX][setY].x-10 and swapButton[p][q].x<=instance[setX][setY].x+10))
and (swapButton[p][q].y==instance[setX][setY].y or (swapButton[p][q].y>=instance[setX][setY].y-10 and swapButton[p][q].y<=instance[setX][setY].y+10))then
if instance[p][q]==nil then
print ("placeHere")
print(i,j)
-- instance[p][q+2]=instance[setX][setY]
print(p,q)
print(swapButton[p][q].x,swapButton[p][q].y)
print(setX,setY)
instance[p][q]=sprite.newSprite(sprite.newSpriteSet(sprite.newSpriteSheet("fireBall.png",36,36),1,40))
instance[p][q].x=swapButton[p][q].x
instance[p][q].y=swapButton[p][q].y
instance[p][q].blendMode="add"
instance[p][q]:prepare()
instance[p][q]:play()
instance[p][q]:addEventListener("touch",myTouchListener)
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
print(setX,setY)
display.remove(instance[setX][setY])
instance[setX][setY]=nil
display.remove( instance[p][q-1] )
instance[p][q-1]=nil
print(i,j)
print(p,q)
i=p;
j=q;
print(i,j)
print(instance[i][j])
-- instance[i][j]=nil
else
print("fireBall is Exists")
instance[i][j].x=t2.x0
instance[i][j].y=t2.y0
end
end
end
end
end
elseif t2.x<t2.x0 and math.abs(t2.y-t2.y0) <= math.abs(t2.x-t2.x0) then
print("Backward")
local backward=false
for p=0, 6 , 1 do
for q=0, 6, 1 do
print(swapButton[p][q].x)
print(swapButton[p][q].y)
print(p,q)
print(setX,setY)
print(setX,setY-2)
if instance[setX][setY]~=nil then
if (swapButton[p][q].x==instance[setX][setY].x or (swapButton[p][q].x>=instance[setX][setY].x-10 and swapButton[p][q].x<=instance[setX][setY].x+10))
and (swapButton[p][q].y==instance[setX][setY].y or (swapButton[p][q].y>=instance[setX][setY].y-10 and swapButton[p][q].y<=instance[setX][setY].y+10))
and backward==false then
print(p,q)
if instance[p][q]==nil then
print ("placeHere")
-- instance[p][q+2]=instance[setX][setY]
print(p,q)
print(swapButton[p][q].x,swapButton[p][q].y)
print(setX,setY)
instance[p][q]=sprite.newSprite(sprite.newSpriteSet(sprite.newSpriteSheet("fireBall.png",36,36),1,40))
instance[p][q].x=swapButton[p][q].x
instance[p][q].y=swapButton[p][q].y
instance[p][q].blendMode="add"
instance[p][q]:prepare()
instance[p][q]:play()
instance[p][q]:addEventListener("touch",myTouchListener)
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
backward=true
print(setX,setY)
print(p,q)
instance[setX][setY]=nil
display.remove(instance[setX][setY])
instance[p][q+1]=nil
display.remove( instance[p][q+1] )
-- print(i,j)
i=p;
j=q;
print(i,j)
else
print("Already Exists")
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
end
end
end
end
end
elseif t2.y>t2.y0 and math.abs(t2.x-t2.x0)<= math.abs(t2.y-t2.y0)then
print("Downward")
local downward=false
for p=0, 6 , 1 do
for q=0, 6, 1 do
print(swapButton[p][q].x)
print(swapButton[p][q].y)
if instance[setX][setY]~=nil then
if (swapButton[p][q].x==instance[setX][setY].x or (swapButton[p][q].x>=instance[setX][setY].x-10 and swapButton[p][q].x<=instance[setX][setY].x+10))
and (swapButton[p][q].y==instance[setX][setY].y or (swapButton[p][q].y>=instance[setX][setY].y-10 and swapButton[p][q].y<=instance[setX][setY].y+10))
and downward==false then
print(p,q)
if instance[p][q]==nil then
print ("placeHere")
-- instance[p][q+2]=instance[setX][setY]
print(p,q)
print(swapButton[p][q].x,swapButton[p][q].y)
print(setX,setY)
instance[p][q]=sprite.newSprite(sprite.newSpriteSet(sprite.newSpriteSheet("fireBall.png",36,36),1,40))
instance[p][q].x=swapButton[p][q].x
instance[p][q].y=swapButton[p][q].y
instance[p][q].blendMode="add"
instance[p][q]:prepare()
instance[p][q]:play()
instance[p][q]:addEventListener("touch",myTouchListener)
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
downward=true
print(setX,setY)
instance[setX][setY]=nil
display.remove(instance[setX][setY])
instance[p-1][q]=nil
display.remove( instance[p-1][q])
print(i,j)
i=p;
j=q;
print( i,j )
-- instance[i][j]=nil
else
print("fireBall is Exists")
print(p,q)
instance[i][j].x=t2.x0
instance[i][j].y=t2.y0
end
end
end
end
end
elseif t2.y<t2.y0 and math.abs(t2.x-t2.x0)<= math.abs(t2.y-t2.y0)then
print("Upward")
local backward=false
for p=0, 6 , 1 do
for q=0, 6, 1 do
print(swapButton[p][q].x)
print(swapButton[p][q].y)
if instance[setX][setY]~=nil then
if (swapButton[p][q].x==instance[setX][setY].x or (swapButton[p][q].x>=instance[setX][setY].x-10 and swapButton[p][q].x<=instance[setX][setY].x+10))
and (swapButton[p][q].y==instance[setX][setY].y or (swapButton[p][q].y>=instance[setX][setY].y-10 and swapButton[p][q].y<=instance[setX][setY].y+10))
and backward==false then
print(p,q)
if instance[p][q]==nil then
print ("placeHere")
-- instance[p][q+2]=instance[setX][setY]
print(p,q)
print(swapButton[p][q].x,swapButton[p][q].y)
print(setX,setY)
instance[p][q]=sprite.newSprite(sprite.newSpriteSet(sprite.newSpriteSheet("fireBall.png",36,36),1,40))
instance[p][q].x=swapButton[p][q].x
instance[p][q].y=swapButton[p][q].y
instance[p][q].blendMode="add"
instance[p][q]:prepare()
instance[p][q]:play()
instance[p][q]:addEventListener("touch",myTouchListener)
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
backward=true
print(setX,setY)
instance[setX][setY]=nil
display.remove(instance[setX][setY])
instance[p+1][q]=nil
display.remove( instance[p+1][q] )
print(i,j)
i=p;
j=q;
print(i,j)
-- instance[i][j]=nil
else
print("fireBall is Exists")
print(p,q)
instance[i][j].x=t2.x0
instance[i][j].y=t2.y0
end
end
end
end
end
end
else
instance[setX][setY].x=t2.x0
instance[setX][setY].y=t2.y0
end
end
instance[i][j]:addEventListener("touch",myTouchListener)
else
print(instance[i][j])
print(tempX)
print(tempY)
--instance[i][j].x=tempX
--instance[i][j].y=tempY
end
swapButton[i][j]= display.newImage("circle.png",40,40)
swapButton[i][j].x=tempX
swapButton[i][j].y=tempY
tempX=tempX+40
temp=temp+1;
print(temp)
print ("swapButtn at"..swapButton[i][j].x)
end
tempX=130
tempY=tempY+40
end
localGroup:insert(gamebg)
return localGroup
结尾