Detecting Mouse Escape Attempts

1#include <SDL.h>
2#include <iostream>
3
4struct Boundary {
5  int Left, Right, Top, Bottom;
6};
7
8bool IsAtBoundary(
9  int X, int Y, const Boundary& Bounds
10) {
11  return X <= Bounds.Left || X >= Bounds.Right ||
12         Y <= Bounds.Top || Y >= Bounds.Bottom;
13}
14
15void HandleMouseMotion(
16  const SDL_MouseMotionEvent& E,
17  const Boundary& Bounds
18) {
19  static int EscapeAttempts{0};
20
21  if (IsAtBoundary(E.x, E.y, Bounds)) {
22    EscapeAttempts++;
23    std::cout << "Escape attempt #"
24      << EscapeAttempts << " detected at ("
25      << E.x << ", " << E.y << ")\n";
26  }
27}
28
29int main(int argc, char** argv) {
30  SDL_Init(SDL_INIT_VIDEO);
31  SDL_Window* Window{SDL_CreateWindow(
32    "Escape Detection",
33    100, 100, 800, 600,
34    SDL_WINDOW_MOUSE_GRABBED
35  )};
36
37  // Define window boundaries
38  Boundary Bounds{10, 790, 10, 590};// 10px border
39
40  bool quit{false};
41  SDL_Event E;
42
43  while (!quit) {
44    while (SDL_PollEvent(&E)) {
45      if (E.type == SDL_QUIT) {
46        quit = true;
47      } else if (E.type == SDL_MOUSEMOTION) {
48        HandleMouseMotion(E.motion, Bounds);
49      }
50    }
51  }
52
53  SDL_DestroyWindow(Window);
54  SDL_Quit();
55  return 0;
56}

1#include <SDL.h>
2#include <iostream>
3#include <cmath>
4#include "Boundary.h"
5
6struct EscapeDetector {
7  int AttemptsCount{0};
8  Uint32 LastAttemptTime{0};
9  double TotalForce{0.0};
10
11  void Update(
12    int X, int Y,
13    int DeltaX, int DeltaY,
14    const Boundary& Bounds
15  ) {
16    if (!IsAtBoundary(X, Y, Bounds)) {
17      return;
18    }
19
20    // Calculate force based on mouse velocity
21    double Velocity{
22      std::sqrt(DeltaX * DeltaX + DeltaY * DeltaY)
23    };
24
25    // Add to total force
26    TotalForce += Velocity;
27
28    // Check if this is a new
29    // attempt (> 500ms since last)
30    Uint32 CurrentTime{SDL_GetTicks()};
31    if (CurrentTime - LastAttemptTime > 500) {
32      AttemptsCount++;
33      std::cout << "Escape attempt #"
34        << AttemptsCount << " with force: "
35        << TotalForce << "\n";
36
37      // Reset force for next attempt
38      TotalForce = 0;
39    }
40
41    LastAttemptTime = CurrentTime;
42  }
43};