Contents  Introduction  Stepping to the  plate...  Mr. Structure  The New Shape  Maker  Update takes a few  practice swings  Let's Get Moving!  Time to Clear the  Bases?  The Final Batters  The Loop and His  Team  Until Next Time...  Printable version     The Series  Part 1  Part 2  Part 3  Part 4  Part 5  Part 6

Time to Clear the Bases?

When it comes time to clear the grid we call upon Line_Test. This will function will return TRUE if it clears a line. It will return false if it doesn't have a valid line on the grid.

Here is the code for it:

The code loops through every line in our grid memory and test for blocks. If it finds that a grid location is empty then it continues with the next line. If every location has a valid block inside of it, then the function moves all of the memory above it to the row that had the line. It does this by calling the Win32 API function RTLMoveMemory().

We have it return after every valid line it finds, and eliminates, because when we want to keep score it will be easier to track how many lines they earn. It is always a good thing to keep future expansion in mind while programming.

Next : The Final Batters