Tomatoes, match tabs, shared pings, and a round of fixes

- On the results, everyone but the winner splats tomatoes where they
  click (bots aim at the winner), with a new splat sound.
- During a match the menu has the item tabs (choosing when the
  countdown allows, and otherwise levelling the sandbox's levels for
  when you're back), Play (the game's rules) and Settings.
- Pings are shared through the server (protocol 4), so other players'
  connection bars show over their heads and on their windows.
- PvP comes into lobbies with your profile and is saved.
- The choice menu opens by itself however the countdown began.
- Knocked-out fighters keep their buttons current, so Ready on the
  results toggles once per press.
- The weapon wheel wraps both ways. Readying with empty slots plays
  the equip sound for your own fighter.
- Shock Absorber: up to 50% less weapon movement and 33% less
  knockback. Only the catalog previews the next level.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/effects.cpp

@@ -14,6 +14,12 @@ constexpr float FLASH_LIFE = 0.05f;
 constexpr float FLASH_WIDTH = 6;
 constexpr float RING_LIFE = 0.3f;
 constexpr int RING_WIDTH = 2;
+constexpr float SPLAT_CORE = 6;
+constexpr float SPLAT_FADE = 0.6f;
+constexpr float SPLAT_LIFE = 2;
+constexpr float SPLAT_REACH = 10;
+constexpr float SPLAT_SIZE_MAX = 3.5f;
+constexpr float SPLAT_SIZE_MIN = 1.5f;
 constexpr float AFTERIMAGE_LIFE = 0.12f;
 constexpr float NUMBER_GAP = 8;
 constexpr float POPUP_FADE = 0.4f;
@@ -127,6 +133,19 @@ void Effects::ring_spawn(Vec2 position, float radius, Color color)
     effect_add(rings, Ring{color, position, RING_LIFE, radius});
 }
 
+// A big blob where it landed, with smaller ones flung round it.
+void Effects::splat_spawn(Vec2 position, Color color)
+{
+    Splat splat = {.color = color, .position = position, .life = SPLAT_LIFE};
+    splat.sizes[0] = SPLAT_CORE;
+    for (int i = 1; i < SPLAT_BLOBS; i++)
+    {
+        splat.blobs[i] = vec2_polar(random_get(0, 2 * PI), random_get(SPLAT_CORE, SPLAT_REACH));
+        splat.sizes[i] = random_get(SPLAT_SIZE_MIN, SPLAT_SIZE_MAX);
+    }
+    effect_add(splats, splat);
+}
+
 void Effects::dps_record(int amount)
 {
     hits.push_back({ticks * TICK, amount});
@@ -168,6 +187,10 @@ void Effects::update()
         ring.life -= TICK;
     std::erase_if(rings, [](Ring& ring) { return ring.life <= 0; });
 
+    for (Splat& splat : splats)
+        splat.life -= TICK;
+    std::erase_if(splats, [](Splat& splat) { return splat.life <= 0; });
+
     for (Afterimage& afterimage : afterimages)
         afterimage.life -= TICK;
     std::erase_if(afterimages, [](Afterimage& afterimage) { return afterimage.life <= 0; });
@@ -209,6 +232,14 @@ void Effects::draw(Game& game)
         renderer.line_draw(flash.position - across, flash.position + across, width * FLASH_CROSS, flash.color);
     }
 
+    // Each splat holds, then fades out over its last moments.
+    for (Splat& splat : splats)
+    {
+        Color color = color_fade(splat.color, std::min(1.0f, splat.life / SPLAT_FADE));
+        for (int i = 0; i < SPLAT_BLOBS; i++)
+            renderer.circle_draw(splat.position + splat.blobs[i], splat.sizes[i], color);
+    }
+
     // Each ring eases out to its full radius as it fades.
     for (Ring& ring : rings)
     {
@@ -259,5 +290,6 @@ void Effects::clear()
     particles.clear();
     popups.clear();
     rings.clear();
+    splats.clear();
     shake = 0;
 }