Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>if you calculate the position of the pacman to correspond to the landTitle array by dividing the pacmanPosX and pacmanPosY with the size of each square (32) and then cast it to an int. then you could simply check if the position in front of you is set to 1 or 0 in the landTile and in that way you can get a very simple and fast collision.</p> <p>Tell me if you get into any hindrance</p> <p><strong>EDIT</strong></p> <p>What I mean is that you an array that explains where all the walls should be in your map. Because of that you don't have to do any sprite collision, instead you can do a simple collision check based on where you are supposed to be in the array. Lets consider the case where you are supposed to move up on the map:</p> <pre><code>int colPosX = pacmanPosX / 32; int colPosY = (pacmanPosY-1) / 32; bool collision = (bool)landTitle[colPosX][colPosY]; </code></pre> <p>if <em>collision</em> is true then you have a collision one pixel upwards from your position, thats what the <em>-1</em> in the calculation of <em>colPosY</em> is for.</p> <p><strong>Edit 2</strong></p> <p>If i should edit your code then I would do it more like this</p> <pre><code>int blockSize = 32; int pacmanPosX = blockSize * 1; int pacmanPosY = blockSize * 1; Sprite pacman (new Surface( "assets/tiles/pacman.png"), 1); Surface* tileSet[2]; int landTile[14][16] = {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,}, {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,}, {1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1,}, {1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1,}, {1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1,}, {1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1,}, {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,}, {1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1,}, {1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1,}, {1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1,}, {1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1,}, {1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1,}, {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,}}; void Game::Init() { // put your initialization code here; will be executed once tileSet[0] = new Surface( "assets/tiles/void.bmp" ); // Sets up data for tileSet tileSet[1] = new Surface( "assets/tiles/wall.bmp" ); } void Game::Tick( float a_DT ) { m_Screen-&gt;Clear( 0 ); for (int indexX = 0; indexX &lt;= 14; indexX++) { for (int indexY = 0; indexY &lt;= 16; indexY++) { int tile = landTile[indexY][indexX]; tileSet[tile]-&gt;CopyTo( m_Screen, indexX * blockSize, indexY * blockSize ); } } if (GetAsyncKeyState( VK_UP ) &amp;&amp; CheckCollision(0,-1)) pacmanPosY -=2; if (GetAsyncKeyState( VK_DOWN ) &amp;&amp; CheckCollision(0, 1)) pacmanPosY += 2; if (GetAsyncKeyState( VK_RIGHT ) &amp;&amp; CheckCollision(1, 0)) pacmanPosX += 2; if (GetAsyncKeyState( VK_LEFT ) &amp;&amp; CheckCollision(-1,0)) pacmanPosX -= 2; Sleep( 10 ); } bool Game::CheckCollision(int dirX, int dirY){ return (bool)landTile[(pacmanPosX+dirX)/blockSize][(pacmanPosY+dirY)/blockSize]; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POSimple collision with .bmp's in an 2 dimensional array?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USUdrian
    1. USUdrian
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POSimple collision with .bmp's in an 2 dimensional array?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COSorry, I don't understand. The only thing I can get out of that is the following: bool collision = false; int pacmanposition = (pacmanPosX/32) + (pacmanPosX /32); if(pacmanposition = landTile[1]) //That's the tile that should be solid. { collision = true; } I won't even try that. I just don't really know what I'm doing here, it is too abstract to me, somehow. I never expected this to be more difficult than pointers and classes and all that to me.
      singulars
      1. PO
      1. USTurbosheep
    2. COI'll make an edit in the answer to explain further
      singulars
      1. PO
      1. USUdrian
    3. COSorry if I come off dense, but why the divide by 32 part? And I don't get the last ...=(bool)landtitle[colPosx][colPosY] line. I've never seen a bool used in braces before an array like that. This pretty frustrating now, this shouldn't be so difficult. I still don't get any of this. Oh, check my the end of my question... there seems to be a logical error in your code.
      singulars
      1. PO
      1. USTurbosheep
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload