Need help with tile engine collisions

[deathsangel]

Can somebody tell me how to add collisions between my player and my layer?
My Code works something like this -

Code: Select all

render()
{
     for (int r = 0; r < rows; r++)
     {
           for (int c = 0; c < columns; c++)
           {
                  switch(myLayer.get_tile(r, c))
                  {
                         SDL_Rect rect;
                         rect.x = c;
                         rect.y = r;
                         rect.w = 50;
                         rect.h = 50;

                         case 0:
                         break;

                         case 1:
                                SDL_BlitSurface(tileImage, NULL, screen, &rect);
                         break;
                  }
           }
     }
}

And for my player, I just have it display on the screen like so

Code: Select all

SDL_Rect rect;
rect.x = myPlayer.get_x();
rect.y = myPlayer.get_y();
rect.w = 50;
rect.h = 50;

SDL_BlitSurface(playerImage, NULL, screen, &rect);

So how do I make it so that if the player hits the wall (index 1) he stops?

my update is roughly like this

Code: Select all

if (RIGHT)
myPlayer.add_x(1);
if (LEFT)
myPlayer.add_x(-1);

[MarauderIIC]

Unless you trim it down to the relevant pieces, you probably won't get any useful responses.
But, welcome to the forum!

[dandymcgee]

Call the layer's get_tile from camera class' add_x and add_y functions and check it against an array of known collision tiles. If it's a collision don't update the camera or player positions, otherwise proceed normally.

If you still have questions I highly recommend you do as Marauder suggested and post only relevant sections of code.

And again, welcome!

[deathsangel]

Thank you for the response, I got it to work

[dandymcgee]

Thank you for the response, I got it to work

Cool.

[deathsangel]

I rewrote my whole entire engine but now it supports collisions and many other things.
Now I'm working to get a scroll feature. As well as jumping
I'm making an maple story style rpg, if you guys have any ideas for what I should have inside my game just post them here!