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IntersectRect

Started by NightZero Jan 6, 2003 at 3:00 PM 2 replies 450+ views

Original Post

Jan 6, 2003 at 3:00 PM

Hi, Anyone kkows why I dont get IntersectRect to work? Using it for rough collision detection: bool Ghost::contains(RECT r, int xPos) { RECT now; SetRect(&now,x+xPos,y,x+xPos+30,y+30); if(IntersectRect(NULL, &r, &now)) return true; return false; } I printed a debugstring and the cordinates is ok! The method works fine if I pass a point instead and checks if it''s inside a rect... regards, Mattias

Prototype

402

Prototype

Jan 6, 2003 at 6:53 PM

Looks like you forgot an else statement.
Your function always returns false.

Colin Jeanne

163

Colin Jeanne

Jan 6, 2003 at 7:23 PM

quote:
Original post by Prototype
Looks like you forgot an else statement.
Your function always returns false.

No. If IntersectRects() returns true, the next statement - return true - will return from the function as true. No else necessary.

NightZero, the first parameter of IntersectRects() cannot be NULL which is why the function is failing.

The hackers must have gotten into the system through the hyperlink!!
Invader''s Realm

Prototype

402

Prototype

Jan 6, 2003 at 8:17 PM

Uh.. of course you are right.
Silly error.

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