Platformer

[iCon]

I'm working on a platform game, at the moment it's not much, just a portion of a level, 2 enemies and some water to swim in. On this thread I'll be posting any problems I can't solve.

When I try to spawn a platform as a sprite, it says 'types do not match', I've been using a similar method to spawn the 2 enemies but it won't work in simply setting the sprite's postion. problem solved

EDIT: I will post the most recent version in later posts.

[DJLinux]

You should upload the complete source code and images in a zip or rar archive.
if you post code with missing variables how we should compile it and point you to the primary problem ?

Joshy

[iCon]

New problem, after a set time, the program crashes. It has something to do with the horizontal collision detection function and the player's position.

The following attachment is in 7-zip format.

Attachments:

[shadow008]

The problem is your platforms.

These lines of code were how i figured it out:


'<<<<<<<<<
'Platforms
'>>>>>>>>>

'horizontal platforms
for lrloop = 1 to lramount
   if lrcollision (lrplatform (lrloop).x, lrplatform (lrloop).y, 0, 16) then
       lrplatform (lrloop).xdir# = -lrplatform (lrloop).xdir#
   endif

   lrplatform (lrloop).x = lrplatform (lrloop).x + lrplatform (lrloop).xdir#
next


The problem is that the platform x position is going outside the boundary of what the tiles allow.

When the x platform position reaches 1168, your equation ((xloc + widthhalf)/32) ends up being ((1168 + 16)/32) = 37.

Your tiles x array only goes to 36!!!! I'm not sure how experienced you are with programming, but you cant access data outside of the arrays boundary.

So, fix the platform x movement, heck, fix all objects x movement because the character can go outside those boundarys too.

I suggest you go through and restructure your code and make the following changes:

-Make all objects x&y positions be either all integers or all floats. Dont mix and match.
-Change your collision function to preemptively check for faults like accessing data outside array boundarys.
-Clamp your objects to the boundarys of the tile array. However you feel like doing so.

Hope that helps you with your problems ^_^

[iCon]

I've already found a different solution to the problem.

If you look at the enemy code, you'll see that I have an array for the sprites themselves and a structure (in an array) to update the sprites.

I only had the structure, not the seperate array, so the loop was updation non-existant platforms, that were located at 0,0 by default.

I'm going to attempt some OpenGL before I finish this.

Here is the new version (with a checkpoint):

Attachments: