Orbit, and two bars that answer instead of reporting

Going sideways lifts the moon off you. Not because gravity weakened -
because at speed the surface falls away underneath as fast as the lander
falls towards it, which is what an orbit is.

A GRADIENT OUT OF INTEGER ARITHMETIC. Gravity is one sixteenth of a pixel
a tick and there is nothing between that and nothing, so it cannot be
scaled down. Instead four times the sideways speed goes into a byte every
tick and the tick's gravity is skipped whenever that byte carries: the
fraction cancelled is the speed over 64, smoothly, with no multiply and no
divide. At four pixels a frame it carries every time. That is the linear
approximation; the honest one is the square, and wants a table.

It did nothing at all for its first two versions. Once because the relief
was a 256th a tick, so orbit wanted a speed no lander would reach; and
once because A IS THE HIGH HALF of the shift register, so multiplying by
four left the answer in A while the code read B, which is nought. The same
trap as the scroll register and the pixel conversion before it.

And a bar for the vertical speed beside the one for drift, both GREEN
WHILE A LANDING WOULD SURVIVE AND RED WHILE IT WOULD NOT. That turns two
numbers into one question - can I put down - and answers it at a glance.

WHAT THIS COST: the flown delivery check. A recording is a list of buttons
and not a flight, so replaying it under different gravity flies somewhere
else; the delivery became a crash two columns short. The fixture is still
there and is still a faithful record of what somebody did, and is no
longer a record of what happens.

That is the standing cost of a flown fixture, and it is worse than the
transcript tests dropped earlier: those broke when an output moved, and
this breaks whenever a NUMBER moves. Making the delivery reachable without
flying - a way to start already carrying, or at a chosen base - is what
would fix it properly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E2JrLzFvuFX9fgi1LDRjrW

Tests/expected/cosmosCrossDisk.out

@@ -25,7 +25,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosDrives.out

@@ -15,7 +15,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosFault.out

@@ -32,7 +32,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosFlip.out

@@ -22,7 +22,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosGrid.out

@@ -22,7 +22,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosMonitor.out

@@ -108,7 +108,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosMonitorRun.out

@@ -27,7 +27,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosRun.out

@@ -15,7 +15,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosSlowDisk.out

@@ -13,7 +13,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50

Tests/expected/cosmosSprite.out

@@ -22,7 +22,7 @@ Mode.sbx                48
 Flip.sbx                173
 Sprite.sbx              442
 Depth.sbx               672
-Lander.sbx              2490
+Lander.sbx              2774
 Pad.sbx                 264
 Crash.sbx               632
 vars.script             50