Limited spread

Three questions for the mechanic

• Are the outer limits truthful?

  Calculate both cone edges from the same emitter and axis used for every released direction. Lock the axis at commitment, and clamp each angle to plus or minus 0.2 radians. A decorative narrow warning over a wider random distribution would break the promise.

• Does variation change the decision?

  Release three single projectiles at 1.85, 2.4, and 2.95 seconds with distinct offsets inside the sector. Show their origins and travel; unlike a simultaneous fan, the exact interior lanes vary from shot to shot, while walking around the whole envelope remains reliable.

• Can the whole player clear it in time?

  At Tavi's starting depth, the right edge is about 348 units from the left wall. Add the 18-unit projectile radius and Tavi's 24-unit radius: her center must get beyond about x=390. She reaches x=465 by 2.28 seconds, before the first shot reaches that depth.

Design mistakes

• A random shot escapes the signal

  If the projectile offset is sampled after drawing a smaller cone, the player can be hit while apparently outside danger. Derive rendering, sampling bounds, and collision from one spread specification.

• The last projectile vanishes too early

  Ending danger when the boss lowers its arm, instead of after the final flight, creates a false recovery cue. Keep the last shot live through its full 1.3-second flight.

Tune the attack

• Bound the variation

  The demonstration uses offsets of -0.15, +0.12, and -0.04 radians around a downward axis. All three sit inside plus or minus 0.2 radians. A seeded sequence makes scrubbing deterministic; a production random sampler must obey the same bound.

• Measure the edge at the player

  The emitter is at (280, 332), Tavi starts at (280, 660), and the right edge at y=660 is about x=347. At that depth, add both collision radii (18 + 24) before declaring an outside route safe.

• Preserve a reachable response

  Tavi walks 185 units laterally in 0.68 seconds after commitment. She crosses the conservative outer clearance before the first projectile's 1.3-second flight can reach her original depth; no invulnerability window is assumed.

• Let every shot finish

  The release spacing is 0.55 seconds and the third projectile expires at 4.25 seconds. Recover only after the complete barrage, so the visible final threat and safe label agree.

Arena

• Use two runes as the rangefinder

  Kern's cracked palm gathers three pebbles while two floor-bound rune rays frame their possible paths. The stones break away one by one; none can slip outside the runes' fixed boundary.

Player upgrades

• Keep a walking route outside the wedge

  Leave enough lateral arena space for the player and projectile radii beyond at least one edge. Faster dodges may cross between individual shots, but the baseline response should work with ordinary movement.

Do not confuse this with

• Distinguish bounded scatter from a fan

  Projectile fan announces several fixed rays at once. Burst fire repeats shots along one ray. Limited spread allows successive shots to take different directions inside one committed sector; splitting projectile instead changes one projectile into several after launch.