Hi everyone
I am using transition to move the snake in snake’s game. I use an array to manage parts of the snake. When the snake moving, the postion of part is updated by previous part. But i can’t make the snake go through wall . You can view code to understand more trouble.
P/s: you chose “not wall” at game type in Settings .
[import]uid: 116872 topic_id: 21441 reply_id: 321441[/import]
hix…Sr.
http://www.mediafire.com/?1su38meybqpam5e
[import]uid: 116872 topic_id: 21441 reply_id: 84871[/import]
who can help me? please [import]uid: 116872 topic_id: 21441 reply_id: 85487[/import]
Isn’t the wall supposed to block the snake? Why do you want to have the snake go through a wall? [import]uid: 10389 topic_id: 21441 reply_id: 85678[/import]
Is the issue that you don’t want a wall created if “No Wall” is selected? Or that you want the wall still displayed but the snake goes through it?
If you want it displayed but the snake can go through it, I changed this:
[lua]for i= 1,#blockpoint_x do
count = count + 1
blockpoint[count] = display.newImage(“image/wall.png”,blockpoint_x[i],blockpoint_y[i])
blockpoint[count].name = “wall”
if (checkWall ==1) then physics.addBody( blockpoint[count],“static”) end
backGroundGroup:insert(blockpoint[count] )
end[/lua] [import]uid: 10389 topic_id: 21441 reply_id: 85683[/import]
Thanks. But this is not my issue. In game, when “Not Wall” is selected, all chicks will be disappeared if the snake move up to edges. it is not right. I want to make each of chick disappeared at this edge and appeareared at opposite edge. [import]uid: 116872 topic_id: 21441 reply_id: 85705[/import]
I just tested it again and walked off the left and the chicks all disappeared then appeared on the right following the hen.
Then I went off the bottom. They disappeared and reappeared at the top following the hen again.
Am I missing something still? [import]uid: 10389 topic_id: 21441 reply_id: 85708[/import]
Or is the issue that they ALL disappear instead of one by one? [import]uid: 10389 topic_id: 21441 reply_id: 85709[/import]
yes. Can you make it dissapeared and reappeared one by one? [import]uid: 116872 topic_id: 21441 reply_id: 85710[/import]
I’m working on it. It looks like from the code that this pseudo logic is happening:
If hen reaches bottom of the screen, move it to the top and place all chicks above the hen so they will follow down the screen.
Instead of:
If hen reaches the bottom of the screen, move it to the top. If each chick reaches the bottom of the screen, move them one by one to the top only if their .y value >320.
Do you understand what I mean?
I will look at what code can be changed for this.
The problem is they are ALL being moved to the top of the screen when the hen reaches the bottom, rather than checking the .y value of the hen then each of the chicks and only moving the hen OR chicks which reach the bottom. [import]uid: 10389 topic_id: 21441 reply_id: 85711[/import]
I replaced this:
[lua] if(self.part[1].direction == “down”) then
for j = 1,#self.part do
if (self.part[j].y > 320) then
self.part[j].y = 0
function actionDown(partI)
self.part[partI]:removeSelf()
self.part[partI] = newPart(“tail”)
self.part[partI].x = self.part[1].x
self.part[partI].y = 0 - partI * space
snake.part[partI].direction = snake.part[partI - 1].predirection
snake.part[partI].predirection = “”
end
–for i=2,#self.part do
local timeDelay = timer.performWithDelay(snake.speed, actionDown(j),1)
end
end
end[/lua]
with this:
[lua] if(self.part[1].direction == “down”) then
for j = 1,#self.part do
if (self.part[j].y > 320) then
self.part[j].y = 0
end
end
end
[/lua]
and it works for the most part.
The only issue is, using transitions for movement.
When the chick hits the bottom and it’s y value changes to 0, it will zoom up the screen and start coming down again. You will have to find a way to make it invisible as it does the transition. Also, it will collide with the hen walking down the screen so that will have to be taken into account… [import]uid: 10389 topic_id: 21441 reply_id: 85712[/import]
Also, the logic here will depend on if self.part[1].direction continues to be “down”. If you change direction once the hen appears at the top, then this may not execute properly. [import]uid: 10389 topic_id: 21441 reply_id: 85713[/import]
But part.y is updated by the previous part. So when hens reaches the bottom of the screen,I set the head.y = 0,chicks will be transition immediately from bottom to top because i moving the chick to the previous chicks. this issue is the transition. it need the target to MOVE. [import]uid: 116872 topic_id: 21441 reply_id: 85715[/import]
Hi BilBy
do you have another way to solve this problem?.. [import]uid: 116872 topic_id: 21441 reply_id: 85966[/import]
Maybe comments will help.
You are only checking to see if the hen goes off the screen, then move everything (including hen and all chicks) to the other side of the screen.
[lua]if(self.part[1].direction == “right”) then – if the hen is heading right then
if(self.part[1].x > 480 ) then – if the hen has reached the right hand side then
self.part[1].x = 0 – hen moves x to 0
function actionRight(partI) – start function
self.part[partI]:removeSelf() – remove chick
self.part[partI] = newPart(“tail”) – create tail at this spot
self.part[partI].x = 0 - partI * space – move chick behind hen
self.part[partI].y = self.part[1].y – set y of chick to y of hen
snake.part[partI].direction = snake.part[1].predirection – set direction the same as hen’s predirection
snake.part[partI].predirection = “” – set predirection for chick to nothing
end
for i=2,#self.part do – for each chick
local timeDelay = timer.performWithDelay(snake.speed, actionRight(i),1) – call function for each chick
end
end
end[/lua] [import]uid: 10389 topic_id: 21441 reply_id: 85971[/import]
So if I understand the logic correctly, it says:
If hen reaches right-hand side (480) then move it to the left and after a short delay, move all chicks behind the hen at the left.
Perhaps it would be better to test if each self.part[] hits 480 and move each then to 0. [import]uid: 10389 topic_id: 21441 reply_id: 85972[/import]
Right. Problem is it. I can’t make the part move one by one when it reach the egde. I was apply your advice, but it dont’t work directly.Can you edit code and if it work, please send me all project.
My email : trungnq@ftl.vn
Many thanks. [import]uid: 116872 topic_id: 21441 reply_id: 85986[/import]