IntersectRect?

I've searched this message board for a couple days and still don't get how the IntersectRect API works. I'm doing some simple rectangular collison detection and I don't understand the parameters of the API:

Declare Function IntersectRect Lib "user32" (lpDestRect As RECT, lpSrc1Rect As RECT, lpSrc2Rect As RECT) As Long

What does the Destination Rectangle do/look like?
I've defined RECT (TOP,BOTTOM,LEFT,RIGHT as long) as a type, is that right?

Here is all my object collision code:

Code:

---

Dim TempRect as RECT
If IntersectRect(TempRect, BLOCKS(i).POINTS, BALLS(j).POINTS) <> 0 And BLOCKS(i).HIT > 0 Then

---

TempRect is a dummy varible, it has no value unless IntersectRect gives it to it.
.POINTS are defined as RECT...

The ball just passes through the block, never "hitting" them.

Anyone know what's wrong?

Forget about that, use the good old VB function that NEVER gives you any problems ;)

VB Code:

If Obj1.Right>=Obj2.Left And Obj1.Left<=Obj2.Right And Obj1.Bottom>=Obj2.Top And Obj1.Top<=Obj2.Bottom Then
    'We've got a collision! :)
End If

API is faster, Jotaf. You can do anything in VB... its just a whole lot slower =).

If you remove the "And Blocks..." part, it might work. What is that for?

Also, a RECT is defined as:

Code:

---

Type RECT
    Left as Long
    Top as Long
    Right as Long
    Bottom as Long
End Type

---

This is actually very important. If you dont have it this way, change it, and it might solve your problem right there. Otherwise, your code looks fine.

Z.

Thank you. This is for a Breakout clone. I guess I have a problem somewhere else...

Oh yeah, I had it declared like you said. I was just to lazy to post it like that. :D

Thanks again for all your help!