Post by: kucalc on January 31, 2007, 01:39:00 pm
* My levels are drawn using tiles (8x8 pixels) and the screen resolution is 128x64. The levels are stored within matrices, ex: mat_a[y]
- .
* Since level data are stored within a matrix, how would I keep track of the player's position? Also, how do I "scroll" along a level? Would it be if the player's character reaches halfway across the screen would I increment the x-position?
* Last, how would I draw the level, which is stored using matrices, when scrolling? This is really complicated for me, as I want to scroll pixel-by-pixel instead of block-by-block.
Post by: trevmeister66 on January 31, 2007, 01:44:00 pm
Post by: kucalc on January 31, 2007, 02:05:00 pm
Post by: Floodkiller on February 01, 2007, 05:34:00 am
(position of character in matrix)-((position of character on screen)+(offset of variable according to matrix; this is only to simplify variable counting)) stored into your scrolling variable.
The above is for a block scrolling, however, so you may have to adjust it to a pixel by pixel.
Post by: kucalc on February 03, 2007, 06:49:00 am
Post by: kucalc on February 22, 2007, 07:10:00 pm
I have been successfully able to use the source code in my game and the scrolling works perfectly. Now, what I want to do is give my tiles attributes, like if my character is on top of the ground tile, Y-coordinate of the player stays the same. How do I do this? Can someone give show my an example source code? Thanks in advance and I appreciate it.
Post by: tifreak on February 23, 2007, 02:33:00 am
I am sorry that we were unable to help, but it seems our C guys have not been on omnimaga for a few days.
Post by: bfr on February 23, 2007, 12:14:00 pm
if(map_base[(unsigned int)(y+48)/16][(unsigned int)(x+64)/16]==22){
//...code...
}
While that code might not even be "proper" and my weird integer conversion thing might not even be supposed to work, it works, and it works well. I have it so that the character is always in the middle of the screen, and the tiles are 16x16, so that's what the numbers are for. map_base is the matrix/2-D array that contains the data for the map. 22 is the number/ID for the tile I'm testing for. I have 48 and 64 are the coordinates for the initial starting position of the character, since x and y start as 0, even when the character is on the tile located at (64,48).
Although maybe I could have explained it better, I hope it helps. :)
Post by: kucalc on February 23, 2007, 03:53:00 pm
