If you don't post any code or tell us what you're doing that isn't working and what you want it to do then we can't help you. :/

Sorry, I meant to post the code, but completely forgot it

@Arthur Kalliokoski, there is no need to be rude, it could simply be a mistake which it turned out to be.

The code is quite ugly, I know that. But again I am just learning.
I will tend to use classes, when I learn more about it.

Main.cpp: http://pastebin.com/UvpWWzW5
Objects.h: http://pastebin.com/5QHi3uQp

Refresher: I am stuck on making Collision Detection with Mappy. You can see how I tried to do it in the code..

Arthur, I already know this. I have been on "Hackforums" many times, back when I wanted to become a "Hacker", though this has nothing to do with the subject, but in my opinion it is rude.

Please do not reply if you cannot help me, instead of coming with rude comments.

Does anyone else besides Arthur have any suggestions, as he obviously does not intend to help me?

Here's his collision detection function,

int collided(int x, int y)
{
                BLKSTR *blockdata;
                blockdata = MapGetBlock(x/mapblockwidth, y/mapblockheight);
                return (blockdata->tl || blockdata->tr || blockdata->bl || blockdata->br);
}

and here's the movement code,

I think it should be closer to something like this for example :
if (!collided(player.x + player.w + player.speed , player.y)) {/* move... */}

But really, you need to test each leading corner, not just one of them. Ie... if you're moving right you need to check the top right through bottom right side where it would be when it moved in the future. Right now you are checking when the right side is already on the block, and only then can you move, which means you can't move at all? Is that what is happening?

Get a min and max tile x and y of the position where your character would be if you moved it and nothing was there. Then loop over that area and see if any of the BLKSTR's at those spots are impassable.

He DID help you Asking smart questions increases the chance of anyone helping you. You could have refined your question in the way that Edgar basically did for you, by posting only code snippets that is relevant to the problem you are having.

In other words, welcome to allegro.cc

Your English seems perfectly fine to me, it's just that an answer to your question could fill a book.

{"name":"607505","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/3\/b\/3b2637cef9ec106e33a0e231506fc6d2.png","w":376,"h":225,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/3\/b\/3b2637cef9ec106e33a0e231506fc6d2"}

Hello,
Going in steps:

A map is made up of tiles, quite probably you are using 32x32 pixels per tile.

Each tile is also called a block.

To work in blocks, e.g. to get tile at 5,5 it is 5,5. To get a pixel version it is 5*BLOCK_WIDTH, 5*BLOCK_WITDH, e.g. in this case 160,x160

A screen might only show 800x600 so can fit 25x16 tiles at a time.

Your player sprite will be working most likely in pixels, so if it's at 160,160 then it is also at tile location 5,5 with a 32 pixel tile.

Mappy provides functions to get blocks and find blocks using pixels and tile locations (but as above it's easy enough to figure out).

When you are drawing your map to the screen you first work out what part of the map to display, i.e. if you are at pixel location 2000,2000 then you will need to offset the starting point (MapDraw functions) to the players position minus whatever calculation you have made for displaying the player (e.g. centred on screen) you might end up working out to display from tile location 50,50

Now for collision, you know where the player is, e.g. 160,160 so get the block at this position (either using the pixel or block mapgetblock functions).

This block is a struct. Use the data you've provided for each block to work out whether it's a collision block or not, e.g. I use tl to indicate is a collision, etc.

Any clearer?

Alright, let's see. I made my map this is what it looks like in mappy
{"name":"RcSktSP.png","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/3\/f\/3ffb8a17b22c28e1d2cf9e45313f67a2.png","w":960,"h":512,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/3\/f\/3ffb8a17b22c28e1d2cf9e45313f67a2"}

This is what I did step for step in Mappy:
1. I opened Mappy.
2. I imported a tileset which I made.
3. I painted the map with the tiles.
4. I saved it as myMap.fmp.
5. I put it in my projects folder.

I ran the code posted above, and it runs perfectly. The map works and all, but the collision doesn't work. I can walk into the ground if I wanted to.

:O Solid blocks, where in mappy can I use that?
I just thought u mapped the map, then C++ checks if use touches a pixel

Yeah, but I mean how do I make different blocks in mappy?
I imported my tileset and painted something, but I never edited any blocks?
And I don't know how to :O

:O I'm having problems again
The collision is not working anymore somehow?

Code:

Note: I set the user1 to 0 for the walkable tile & to 1 for the non-walkable tile.

Oh, I see. You know, I've been learning Allegro for about a week now, and I still don't know why I couldn't figure it out :O. But now it makes sense -.-.
Thanks!