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The "constrained" property for a mouse mode now actually constrains

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the mouse rather than wrapping it.  Wrapping around to the other side
of the screen has very bad consequences when using the mouse for
flying or viewing -- it can result in sudden jumps in the controls or
the viewpoint when the mouse jumps to another side of the screen.

Right now, the mouse is constrained to stay between 25% and 75% of the
screen on both the X and Y axis -- whenever it hits an edge, it jumps
back to the centre of the screen again (which causes no control or
view jump).
This commit is contained in:
david 2006-02-16 01:30:28 +00:00
parent 2aedb080d7
commit 85707f1e49
1 changed files with 4 additions and 10 deletions
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14
src/Input/input.cxx
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@ -387,19 +387,13 @@ FGInput::doMouseMotion (int x, int y)
// Constrain the mouse if requested // Constrain the mouse if requested
if (mode.constrained) { if (mode.constrained) {
bool need_warp = false; bool need_warp = false;
if (x <= 0) { if (x <= (xsize * .25) || x >= (xsize * .75)) {
x = xsize - 2; x = int(xsize * .5);
need_warp = true;
} else if (x >= (xsize-1)) {
x = 1;
need_warp = true; need_warp = true;
} }
if (y <= 0) { if (y <= (ysize * .25) || y >= (ysize * .75)) {
y = ysize - 2; y = int(ysize * .5);
need_warp = true;
} else if (y >= (ysize-1)) {
y = 1;
need_warp = true; need_warp = true;
} }