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Fix Below the Surface - Camera jitter when walking into walls #248

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Fix Below the Surface - Camera jitter when walking into walls #248

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26 changes: 22 additions & 4 deletions games/BelowTheSurface/camera.h
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ class Camera
double y_border_top = 0;
double x_border_right;
double y_border_bottom;
bool first_update = true;
vector<shared_ptr<Player>> players;

public:
Expand Down Expand Up @@ -48,11 +49,28 @@ class Camera

point_2d mid_player = {mid_player_x, mid_player_y};

double sc_x = mid_player.x + - (screen_width() / 2);
double sc_y = mid_player.y + - (screen_height() / 2);

move_camera_to(sc_x, sc_y);
// Target position (Where the camera should be)
double sc_x = mid_player.x - (screen_width() / 2);
double sc_y = mid_player.y - (screen_height() / 2);

if (first_update)
{
move_camera_to(sc_x, sc_y);
first_update = false;
}
else
{
// Current position
double cam_x = camera_x();
double cam_y = camera_y();

// Next eased position
double smooth = 0.05;
cam_x += (sc_x - cam_x) * smooth;
cam_y += (sc_y - cam_y) * smooth;

move_camera_to(cam_x, cam_y);
}

if(camera_x() < x_border_left)
set_camera_x(x_border_left);
Expand Down