Flock of Birds (boids) With Class and operation overloading takes too
much mem
lazarus / 70-OpenGL

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Dzandaa · 2023-12-04 11:39

Hi

This is a demonstration showing a Flock of Birds based on Boids
artificial life program created by Craig Reynolds.

Using OpenGL, work on Linux and Windows.

https://en.wikipedia.org/wiki/Boids

Have fun.

B->

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Dzandaa · 2023-12-04 15:56

Hi again,

I realize that I Didn't manage well operator overloading with a Class
(memory eating!!!)

This version is just using records.

B->

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cdbc · 2023-12-04 16:08

Hi
Memory eating... You think 
The first version just "bricked" my lappy 
Regards Benny

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Dzandaa · 2023-12-04 16:30

Hi,
@cbdc

I'm very sorry for that!!!

I didn't find any example with operator overloading in a class.

Just overloading of Records.

The problem come with vector2u.

If anybody have an example with overloading operators in classes, I'm
interested (Form based application)

Example:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i operator +
(const V1: Vector2; Val: Single): Vector2;begin//      result.X :=
V1.X + Val; // <-- Solution one crashes because result is not
initialized.//      result.Y := V1.Y + Val; exit(Vector2.Create(V1.X +
Val, V1.Y + Val)); // Solution 2 works but didn't free the memoryend; 
B->

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MarkMLl · 2023-12-05 13:08

"Bricked"? Rendered indistinguishable from a boat anchor? Surely
not... :-)

@Dzandaa You should have put "boids" in the subject line: I'm sure I'm
not the only person around here who'd understand the allusion. I
remember when this was first discussed in the late 80s, and always
find myself thinking of it when I see something like the Rutan Ares.

MarkMLl