Box2d 1 dimensional wall

Comments

• HubertRonald Member

  November 2014 edited November 2014

  Hi @Zizanyman
  
  @H4ch1 gave us a "doodle jump clone" and although there are not a random walls if there are random floors.
  
  You can take some ideas of this script
  http://giderosmobile.com/forum/discussion/473/let039s-jump-d#Item_10
  
  I hope this script can help you

  Likes: Zizanyman

  
  [-] Liasoft

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• ar2rsawseen Maintainer

  November 2014

  @Zizanyman for the wall, you don't need to randomly generate coordinates.
  You only need to randomly generate 1 center coordinate, and then dimensions (width and height) and rotation, so that way you can always have a flat random wall

  Likes: Zizanyman

  http://appcodingeasy.com/Gideros-Mobile

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• Zizanyman Member

  November 2014 edited November 2014

  Thanks @ar2rsawseen! That worked to make it flat, but it generates the same coordinates every time. On the init function, this is my code to put it in a random spot.
  
  self:wall(realx,realy) -- realx and realy are the random coordinates
  
  And my code when I am creating the wall object:
  
  wall:beginPath()
  wall:moveTo(-screenW/2,-screenH/2)
  wall:lineTo(screenW/2, -screenH/2)
  wall:closePath()
  wall:endPath()
  wall:setPosition(x,y)

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• ar2rsawseen Maintainer

  November 2014

  @Zizanyman do you mean it gets same coordinates all the time, or only on app start?

  http://appcodingeasy.com/Gideros-Mobile

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• Zizanyman Member

  November 2014 edited November 2014

  The wall is in the same place every time.

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• ar2rsawseen Maintainer

  November 2014

  @Zizanyman can you post the full self:wall function

  http://appcodingeasy.com/Gideros-Mobile

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• Zizanyman Member

  November 2014 edited November 2014

  @ar2rsawseen This is the self:wall function (I am basing my code after the box2d accelerometer post on app coding easy if this looks familiar):
  
  function scene:wall(x, y, width, height)
  local wall = Shape.new()
  wall:beginPath()
  
  wall:moveTo(-screenW/2,-screenH/2)
  wall:lineTo(screenW/2, -screenH/2)
  wall:closePath()
  wall:endPath()
  wall:setPosition(x,y)
  
  local body = self.world:createBody{type = b2.STATIC_BODY}
  body:setPosition(wall:getX(), wall:getY())
  body:setAngle(wall:getRotation() * math.pi/180)
  local poly = b2.PolygonShape.new()
  poly:setAsBox(wall:getWidth()/2, wall:getHeight()/2)
  local fixture = body:createFixture{shape = poly, density = 1.0,
  friction = 10, restitution = 0.2}
  wall.body = body
  wall.body.type = "wall"
  self.isVisible = false
  
  self:addChild(wall)
  
  return wall
  end
  
  And then as I said earlier I used self:wall(realx, realy) in the init function to set the random coordinates (realx and realy are random values).
  
  My complete code so far is attached if you want to take a look( I know your really busy, though)

  lua

  lua

  main.lua

  5K

  zip

  zip

  Box2D_accelerometer.zip

  13K

  main.lua 5.3K

  Box2D_accelerometer.zip 12.9K

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• ar2rsawseen Maintainer

  November 2014

  From your project I see that you generate realx and realy only once, you should rengenerate them, before creating new wall, so it would be in different position.
  Placing them inside function scene:init() will help achieving new position on each scene change

  http://appcodingeasy.com/Gideros-Mobile

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• Zizanyman Member

  November 2014 edited November 2014

  @ar2sawseen I tried doing this, and it still made the same coordinates the same time. I know it is just the random values (realx and realy) that are causing my troubles because I put print(realx) and print(realy) into my code, and it prints out the same numbers every time, 92 and 647. I am going to start a new discussion (question called random values not working) instead of continuing on this one, because now I know what the problem is, and a new discussion will point out this problem.

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