check direction variable, move and repeat

dwane_dibbley · January 27, 2019, 10:40am

Please help. I’ve been scripting for a couple of months. I’m tring to move a object (man) in
transitions of 10 in the direction of the variable (direction). on completing its move, it checks the direction again
and repeats the process. the idea been that it can move correctly around a maze without hitting the walls…

For instance a player is moving the man up within the maze, they press move right…
after each transition a function checks all possible directions in can move in,
if it can’t move right it keeps moving up until it has the option to move right.

I hope this makes some sort of sense, i’m just stuck on the move, check direction, repeat,

I can then manipulate the direction variable accordingly

i’ve tried many ideas, this is the latest:-

local direction local newDirection local man = display.newImageRect( "images/man.png" ,10 ,10 ) man.x=100; man.y=100 local right = display.newImageRect( "images/button.png" ,20 ,20 ) right.x=250; right.y=440 right.id = "rightButton" local left = display.newImageRect( "images/button.png" ,20 ,20 ) left.x=200; left.y=440 left.id = "leftButton" local function checkDirection( event ) print (direction) if direction == 1 then newDirection = man.x newDirection = newDirection+10 transition.moveto( man, { x=newDirection, y=0, time=200 } ) end end -- direction 1 = right / direction 2 = left -- SET DIRECTION RIGHT function right:touch( event ) if event.phase == "began" then print( "You touched the right button!" ) direction = 1 return true end end -- SET DIRECTION LEFT function left:touch( event ) if event.phase == "began" then print( "You touched the left button!" ) direction = 2 return true end end right:addEventListener( "touch", right ) left:addEventListener( "touch", left ) Runtime:addEventListener( "enterFrame", checkDirection )

dwane_dibbley · January 27, 2019, 3:43pm

this script is a little closer

local direction local newDirection local man = display.newImageRect( "images/pill.png" ,10 ,10 ) man.x=100; man.y=100 local right = display.newImageRect( "images/wall.png" ,20 ,20 ) right.x=250; right.y=440 right.id = "rightButton" local left = display.newImageRect( "images/wall.png" ,20 ,20 ) left.x=200; left.y=440 left.id = "leftButton" local function move(direction) local function direct() print("direction:= "..direction) direction = direction move(direction) end if direction == 1 then newDirection = man.x newDirection = newDirection+10 print ("move right") transition.moveTo( man, { x=newDirection, y=y, time=300, onComplete=direct} ) elseif direction == 2 then newDirection = man.x newDirection = newDirection-10 print ("move left") transition.moveTo( man, { x=newDirection, y=y, time=300, onComplete=direct} ) end end -- direction 1 = right / direction 2 = left -- SET DIRECTION RIGHT function right:touch( event ) if event.phase == "began" then print( "You touched the right button!" ) direction = 1 return true end move(direction) end -- SET DIRECTION LEFT function left:touch( event ) if event.phase == "began" then print( "You touched the left button!" ) direction = 2 return true end move(direction) end right:addEventListener( "touch", right ) left:addEventListener( "touch", left )

XeduR · January 27, 2019, 5:55pm

Your code doesn’t provide much help without understanding how the maze itself has been created.

I’m presuming that we are talking about a simple grid where the player can either pass a cell or not. I wrapped up a brief code sample that shows the approach that I would take.

Simply put, I’d start by always checking if the cell the player is trying to move to exists. If it does, then can the player pass through it? The maze in the sample contains cells with values 1 or 0 for passable and impassable. If the cell is passable, then just move the player there. If you want to keep on moving, then just add an onComplete that will repeat the movement.

The sample below is simplified and you’d need to add in your rules for how long to repeat, etc. but this should get you going again.

local maze = { {1,0,1,1,1}, {1,0,1,0,0}, {1,1,1,0,0}, {1,0,0,0,0} } local tile = {} local tileStartX, tileStartY, tileSize = 60, 60, 60 for i = 1, #maze do tile[i] = {} for j = 1, #maze[i] do tile[i][j] = display.newRect( tileStartX+tileSize\*(j-1), tileStartY+tileSize\*(i-1), tileSize, tileSize ) if maze[i][j] == 1 then tile[i][j]:setFillColor(0,1,0) else tile[i][j]:setFillColor(1,0,0) end end end local locRow = 1 local locColumn = 1 local direction = "down" local charTransition local character = display.newCircle( tile[locRow][locColumn].x, tile[locRow][locColumn].y, 20 ) character:setFillColor(0,0,1) local checkPath local function moveTo(row,column) charTransition = transition.to( character, { time=500, x=tile[row][column].x, y=tile[row][column].y, onComplete=checkPath }) end function checkPath() local toRow, toColumn = locRow, locColumn -- adjust the toRow/toColumn according to the direction if direction == "left" then toColumn = toColumn-1 elseif direction == "right" then toColumn = toColumn+1 elseif direction == "up" then toRow = locRow-1 elseif direction == "down" then toRow = locRow+1 end -- check if the toRow exists if maze[toRow] then -- check if the toColumn exists on the toRow if maze[toRow][toColumn] then -- check if the cell is passable and update the location if maze[toRow][toColumn] == 1 then locRow, locColumn = toRow, toColumn moveTo(toRow,toColumn) end end end end checkPath()

dwane_dibbley · January 27, 2019, 3:43pm

this script is a little closer

local direction local newDirection local man = display.newImageRect( "images/pill.png" ,10 ,10 ) man.x=100; man.y=100 local right = display.newImageRect( "images/wall.png" ,20 ,20 ) right.x=250; right.y=440 right.id = "rightButton" local left = display.newImageRect( "images/wall.png" ,20 ,20 ) left.x=200; left.y=440 left.id = "leftButton" local function move(direction) local function direct() print("direction:= "..direction) direction = direction move(direction) end if direction == 1 then newDirection = man.x newDirection = newDirection+10 print ("move right") transition.moveTo( man, { x=newDirection, y=y, time=300, onComplete=direct} ) elseif direction == 2 then newDirection = man.x newDirection = newDirection-10 print ("move left") transition.moveTo( man, { x=newDirection, y=y, time=300, onComplete=direct} ) end end -- direction 1 = right / direction 2 = left -- SET DIRECTION RIGHT function right:touch( event ) if event.phase == "began" then print( "You touched the right button!" ) direction = 1 return true end move(direction) end -- SET DIRECTION LEFT function left:touch( event ) if event.phase == "began" then print( "You touched the left button!" ) direction = 2 return true end move(direction) end right:addEventListener( "touch", right ) left:addEventListener( "touch", left )

XeduR · January 27, 2019, 5:55pm

Your code doesn’t provide much help without understanding how the maze itself has been created.

I’m presuming that we are talking about a simple grid where the player can either pass a cell or not. I wrapped up a brief code sample that shows the approach that I would take.

Simply put, I’d start by always checking if the cell the player is trying to move to exists. If it does, then can the player pass through it? The maze in the sample contains cells with values 1 or 0 for passable and impassable. If the cell is passable, then just move the player there. If you want to keep on moving, then just add an onComplete that will repeat the movement.

The sample below is simplified and you’d need to add in your rules for how long to repeat, etc. but this should get you going again.

local maze = { {1,0,1,1,1}, {1,0,1,0,0}, {1,1,1,0,0}, {1,0,0,0,0} } local tile = {} local tileStartX, tileStartY, tileSize = 60, 60, 60 for i = 1, #maze do tile[i] = {} for j = 1, #maze[i] do tile[i][j] = display.newRect( tileStartX+tileSize\*(j-1), tileStartY+tileSize\*(i-1), tileSize, tileSize ) if maze[i][j] == 1 then tile[i][j]:setFillColor(0,1,0) else tile[i][j]:setFillColor(1,0,0) end end end local locRow = 1 local locColumn = 1 local direction = "down" local charTransition local character = display.newCircle( tile[locRow][locColumn].x, tile[locRow][locColumn].y, 20 ) character:setFillColor(0,0,1) local checkPath local function moveTo(row,column) charTransition = transition.to( character, { time=500, x=tile[row][column].x, y=tile[row][column].y, onComplete=checkPath }) end function checkPath() local toRow, toColumn = locRow, locColumn -- adjust the toRow/toColumn according to the direction if direction == "left" then toColumn = toColumn-1 elseif direction == "right" then toColumn = toColumn+1 elseif direction == "up" then toRow = locRow-1 elseif direction == "down" then toRow = locRow+1 end -- check if the toRow exists if maze[toRow] then -- check if the toColumn exists on the toRow if maze[toRow][toColumn] then -- check if the cell is passable and update the location if maze[toRow][toColumn] == 1 then locRow, locColumn = toRow, toColumn moveTo(toRow,toColumn) end end end end checkPath()