Splatter: invert the aim camera, and make the pull's angle actually matter

The aim camera now drops and pushes IN while you draw instead of lifting and
leaning back — you crouch into the shot. Both knobs just flip sign, so the old
behaviour is a sign change away in the T panel.

And the reason the pull's angle felt like it did nothing: aimCone 0.45 meant a
lane half-width of ±10 m at the far baseline, which is the entire court. Every
downward pull locked the same body, so the indicator's angle was decoration.
At 0.10 (±2.9 m out there, ±0.9 m at your feet) the angle picks a lane for
real — swept in 4° steps against three shamblers 18 m out, each one owns a
~12° window and past ±20° the ball flies into an empty lane. Thumb-sized, but
you have to point.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

config.js

@@ -26,7 +26,7 @@ export const TUNE = {
   changeoverT: 4.5, // s the changeover breather lasts (after odd games, as the rules demand)
   gameBeatT: 1.6,   // s the game-end beat lasts on even (non-changeover) games
   eatenR: 0.9,      // m a shambler must close to eat you — matches the visual sprite overlap
-  zSnap: 1.4,       // m free-aim magnetism: a zombie this close to your flick's landing point is the target
+  zSnap: 0.9,       // m of lateral slack at zero range — the aim cone's base width (fat-thumb forgiveness)
   killsPerPoint: 3, // splatter: zombie kills to score ONE tennis point (1 = every kill scores, old behavior)
   zSplatQ: 0.5,     // min shot quality to splatter; below = stagger pushback
   zPushback: 1.4,   // m a staggered zombie is knocked back
@@ -38,12 +38,17 @@ export const TUNE = {
   pullFull: 95,     // px of pull for a full-power shot. Keep this well inside one thumb's travel.
   pullQMin: 0.12,   // shot quality at pullMin, scaling to 1.0 (= PERFECT) at pullFull. Below
                     // zSplatQ it only staggers, so a lazy flick can't kill: THE anti-spam knob.
-  aimCone: 0.45,    // lane half-width per meter of range — the aim cone widens with distance
+  aimCone: 0.10,    // lane half-width added per meter of range. This is what makes the pull's ANGLE
+                    // mean something: at 0.45 the cone was ±10 m at the far baseline — the whole
+                    // court — so every downward pull picked the same body and the angle felt inert.
+                    // 0.10 gives ±2.9 m out there: you have to actually point at a lane.
   aimReach: 22,     // m the aim ray runs when no shambler stands in the lane
-  aimCamY: 1.2,     // m the camera rises while you're drawing — a steeper look, so the gap between
-  aimCamZ: 1.2,     // m it also leans back, so the lift doesn't push the near court off-screen.
-                    // Together: you can read the depth behind the net, which is exactly the shot
-                    // that used to be blind. Set both to 0 for the old fixed camera.
+  // How the camera moves while you're drawing the slingshot. NEGATIVE (the default) drops it and
+  // pushes in — you crouch into the shot. POSITIVE lifts it and leans back for a steeper, more
+  // top-down look, which reads the depth behind the net better but feels less like aiming.
+  // Both 0 = the old fixed camera.
+  aimCamY: -1.2,    // m of camera height change
+  aimCamZ: -1.2,    // m of camera dolly (negative = closer)
   backstopZ: -1.8,  // z of the far backstop — must sit IN FRONT of the -2 retire line, or balls die before they reach it
   backstopKeep: 0.55, // pace a ball keeps after the rebound — still lethal, slower
   backstopPop: 1.8,   // m/s of lift off the fence, so the rebound travels back instead of dying at the net posts