Weapons built from traits, fashion, Hourglass, About tab, and Ithaca

- Every attack is now assembled from traits on its definition instead
  of per-weapon code: an anchor and path (thrusts, out-and-back, arcs),
  shared flight physics (gravity, drag, acceleration, homing, and one
  wall response: end, burst, stick, crawl, bounce, stop, pass, return,
  latch), and flags like bouncy, drifting, tethered, orbiting, instant
  and arming. Melee are projectiles too.
- Shots have a lifetime and a fade (when damage bottoms out). Range is
  speed times lifetime. Ricochets and the Vacuum wind lifetime back.
- The Vacuum pulls anyone's shots, and its airblast flips them out
  along the aim, claiming enemies' (fading into your colour).
- New trinket: Hourglass, longer projectile lifetime and range. Ropes
  and chains lengthen with it and the Accelerator.
- Fashion: 23 items worn on the head, face or torso, chosen in Profile.
- Flamethrower flames hit continuously, the whip coils and sweeps,
  bouncing shots roll over ramps, and Ricochet relights grenade fuses.
- Profile tab, colour tooltips, option hints on every setting, an
  About tab with credits and links, and the Ithaca font.
- Loadouts lock once readied, tomatoes clear with the match, and the
  round-over pause is 4 seconds.
- CC0 license. Tools and CLAUDE.md are no longer tracked, and the web
  shell moves to web/.

src/game.h

@@ -19,6 +19,14 @@
 
 constexpr float PVP_OFF_SHADE = 0.4f;
 
+// How a fighter's colour is asked for: as it shows in the world (darkened when PvP keeps it out of this screen's
+// fights), or plain, as the HUD shows it.
+enum Tint
+{
+    TINT_PVP,
+    TINT_PLAIN
+};
+
 // Every manager in one place, so systems can reach each other through a single reference.
 // Devices say which input plays each fighter on this screen (none for bots). Sim is the game being
 // played, saved in snapshots. Local is the fighter this screen
@@ -76,11 +84,11 @@ struct Game
     }
 
     // A fighter's colour: its match colour (handed out when the match starts), or in the sandbox this screen's own
-    // (picked in Customize, white while unassigned) until others join, when everyone
+    // (picked in Profile, white while unassigned) until others join, when everyone
     // gets one. With others in the sandbox, everything of another fighter is darkened on this screen unless it and this
     // screen's own both have PvP on (so they can hurt each other); this screen's own always shows in full. Asked for
-    // plain (as the HUD's tint is), it's never darkened.
-    Color color_get(int fighter, bool isPlain = false)
+    // plain (TINT_PLAIN, as the HUD's tint is), it's never darkened.
+    Color color_get(int fighter, Tint tint = TINT_PVP)
     {
         if (sim.match.state == MATCH_PRACTICE && sim.fighterCount == 1)
         {
@@ -89,9 +97,16 @@ struct Game
         }
         Color color = PALETTE[sim.match.colors[fighter]];
         bool isHostile = sim.fighters[fighter].isPvp && sim.fighters[local].isPvp;
-        bool isPeaceful = !isPlain && fighter != local && sim.match.state == MATCH_PRACTICE && !isHostile;
+        bool isPeaceful = tint == TINT_PVP && fighter != local && sim.match.state == MATCH_PRACTICE && !isHostile;
         return isPeaceful ? color_shade(color, PVP_OFF_SHADE) : color;
     }
+
+    // What a fighter wears: in the sandbox alone, what Profile has picked, otherwise what the match has them in.
+    int fashion_get(int fighter)
+    {
+        bool isAlone = sim.match.state == MATCH_PRACTICE && sim.fighterCount == 1;
+        return isAlone ? settings.fashion : sim.match.fashions[fighter];
+    }
 };
 
 void game_tick(Game& game);