strafehud: refactor and document the minimum hud angle calculations triggered by...

diff --git a/qcsrc/client/hud/panel/strafehud/util.qc b/qcsrc/client/hud/panel/strafehud/util.qc
index 74704685ef7a173fbe071f238d838a3737258d94..189621c40ec5ca294f4e9c11b357d79337923fd4 100644 (file)
--- a/qcsrc/client/hud/panel/strafehud/util.qc
+++ b/qcsrc/client/hud/panel/strafehud/util.qc
@@ -218,13 +218,17 @@ float StrafeHUD_DetermineHudAngle(float wishangle)
                }
                else
                {
-                       // determine minimum required angle to display full strafe range
-                       float range_minangle = fabs(wishangle) % 90; // maximum range is 90 degree
-                       if(range_minangle > 45) range_minangle = 45 - fabs(wishangle) % 45; // minimum angle range is 45
-                       range_minangle = 90 - range_minangle; // calculate value which is never >90 or <45
-                       range_minangle *= 2; // multiply to accommodate for both sides of the hud
-
-                       hudangle = range_minangle; // use minimum angle required if dynamically setting hud angle
+                       // determine the minimal required HUD angle to contain the full strafing angle range
+                       // this is useful for the velocity centered mode where the zones do not follow the strafing angle
+                       // how it works:
+                       //   the angle where the most acceleration occurs moves relative to the player velocity
+                       //   from 0 - wishangle to 90 - wishangle
+                       //   the angle farther away from the center is the maximum the optimal strafing angle can
+                       //   diverge from the direction of velocity
+                       //   this angle has to be multiplied by two since the HUD extends in both directions which
+                       //   halves the amount it extends in a single direction
+                       float absolute_wishangle = fabs(wishangle);
+                       hudangle = max(absolute_wishangle, 90 - absolute_wishangle) * 2;
                }
        }
        else if(autocvar_hud_panel_strafehud_range < 0)