TRACE · ROUND 6

Let me start by planning this round. I have a previous round result with excitement 6.25, intensity 5.59. I want to improve: more inversions, higher excitement while keeping intensity under 10. Key learnings from previous round: - 98 pieces, ride_time 50s, avg speed 574812, max speed 1406882 - excitement 6.25, intensity 5.59, nausea 2.74 - max height z=344 (start z=112), so lift went up ~232 units? Actually up_25 gains... let me think about the coordinate system. Plan for this round: Build a bigger, better coaster with: 1. A taller chain lift (more drops → more excitement) 2. Multiple inversions (vertical loop, half loop/corkscrew if available) 3. Airtime hills 4. Booster to fix valleys First, let me check the piece catalog. Let me call piece_geometry and valid_next_pieces to see what's available. Actually let me start by getting the state and geometry info. Strategy: Start station at around (60,60) area on flat grass, avoid the lake at (68-85, 55-75). Hmm, the lake is right there near (60,60)? "flat grass around tile (60,60); a lake sits roughly at tiles (68-85, 55-75)". So build mostly in x<68 or y outside 55-75. Previous round started at (38,106) and built a long layout. Max z was 344 vs start z=112 — wait that's weird, 344 seems very high. Actually maybe the vertical loop adds height units. Whatever. Let me plan carefully this time. Design idea: "Serpent's Coil" — steel twister with: - Station (3-4 pieces) - Chain lift 25° climb (~10-12 pieces high) - Big first drop 60° - Speed hill + vertical loop - Half loop / corkscrew section - Banked turns - Booster mid-layout - Brake run into station For excitement, key factors: variety of elements, airtime, inversion count, drop height, length, number of drops, average speed, and low-ish intensity (<10). Let me look at the piece geometry to know exact deltas. Let me do that now. I'll begin with tools: get_state (to confirm nothing placed), piece_geometry(0), piece_geometry(2). Actually since new_ride resets things, let me first explore catalog via piece_geometry which lists every catalog piece presumably. Let me plan in parallel: call piece_geometry for dir 0/1/2/3 after starting a ride... but geometry is independent of rides probably. Let me call it before new_ride. Let me do it.

Let me note key geometry (dir 0 = facing -x): - up_25: dz +16, stays dir - flat_to_up_25: dz +8, slope_out 2 (25°) - up_60: dz +64, slope_out 4 - flat_to_up_60: +24 - down_60: dz -64 - left_turn_5: dx -2, dy -3, dir 3, dz 0. Interesting — a 5-piece turn? Actually "left_turn_5" likely is a wide turn spanning multiple tiles. - left_turn_3: dx -1, dy -2, dir 3. - left_turn_1: dx 0, dy -1, dir 3. - right_turn_5: dx -2, dy +3, dir 1. - half_loop_up: bank 15, dx 0, dy 0, dz +152, dir unchanged 0, slope out 0! Wait slope_out 0 for half_loop_up with dz+152?? Hmm, that's odd. Half loop up ends... in RCT the half loop up ends going down 25 usually. But here slope_out says 0? Let me re-read: {"bank_out":15,"dir_out":2,"dx_tiles":0,"dy_tiles":0,"dz":152,"piece":"half_loop_up","slope_out":0}. Hmm wait, but in previous round I placed "right_vertical_loop" which had slope_out 6 (down 25) per catalog ("right_vertical_loop","slope_out":6). And after vertical loops they placed "down_25","down_25"... consistent. Half_loop_up: dz +152, slope_out 0, dir same. Then "half_loop_down": bank 0→? entry requires... {"bank_out":0,"dir_out":2,"dx_tiles":2,"dy_tiles":0,"dz":-152,"piece":"half_loop_down","slope_out":6} — hmm this suggests half_loop_down starts flat (slope 0) and exits at slope 6 (down25). So sequence: ...flat → half_loop_up (ends flat, +152z, banked 15?) → half_loop_down (starts flat? bank must be 15? It says bank_out 0 and start presumably bank 15). Hmm wait actually in RCT2 a half-loop comes in on up-25 and exits... no. In RCT2 the "half loop" element: enters from a decline, goes up over itself and exits downward. The piece list here has "half_loop_up" (dz +152) followed by "half_loop_down" (dz -152) typically with flat between? Not sure. The game will tell us via valid_next_pieces. Corkscrews: left_corkscrew_up: dz+80, dir changes to 3, bank 15; then presumably "left_corkscrew_down"? That's listed too with dz -80, dir stays 3, bank 0. So corkscrew = up then down pieces, total net 0 dz. Also there are helixes: left_helix_up_small: dx1, dy-3, dir_out 2?? For dir_in 0 → dir_out 2 = 180° turn, dz +16. Nice, compact turn-around with climb. Wait, helix small: dx_tiles 1, dy -3, dir out 2 (reversed), dz +16, bank 2. And large: dy -5, dz+16. That's very useful for planning closures. Previous round learnings: got 6.25 excitement with 98 pieces, 2 inversions (two vertical loops), 5 drops, highest drop 25?? "highest_drop":25 — hmm that seems low given z max was 344 vs 112. Oh wait, maybe "highest_drop" is measured differently. Max speed 1406882 (~14 ft/s units?). Whatever — relative improvements matter. To boost excitement: 1. More inversions (target 4+: two vertical loops + corkscrews or half loops). 2. Higher first drop (taller lift). 3. Airtime hills / negative G moments (max_negative_g was -0.93, good). 4. Longer ride length with variety. 5. Keep intensity <10. Previous intensity 5.59 — we have room to add thrills. Key risk: crashes → disqualified. Also valleys → train stalls. Booster fixes. Since this is the final round and time limited, plan carefully first on paper, use place_pieces in big chunks, verify closure arithmetic. Design plan "Scorpion King" or similar: Start station: begin_station, middle, middle, end_station (4 pieces). Place at tile ~(40,110) facing +x (dir 2)? Let me design a layout in a coordinate grid. Let me choose area x: 30-70, y: 85-120 — south-west of lake (lake is y55-75, x68-85). So stay y>=85 to be safe, or x<=65. Let me define directions: dir0 = -x, dir1=+y, dir2=+x, dir3=-y. Note turns in dir0: - left_turn_3: dx-1, dy-2 → dir 3 (-y) - right_turn_3: dx-1, dy+2 → dir 1 (+y) So turning "left" from facing -x heads toward -y. OK. Layout concept: Station run along +x at y=~108, starting x=36 → pieces go +x each. Start at (36,108) dir 2. Leg A (station): begin(37,108)? Actually cursor starts AT the start tile and placing begin_station advances to next tile. In the previous round, start was x=38,y=106 and … (49986 chars)

Cursor at (34,104) z112 dir2. Now place Batch 1: station + lift + crest + drop. Pieces: 1. begin_station 2. middle_station 3. middle_station 4. end_station 5. flat_to_up_25 (chain) 6-18. up_25 ×13 (chain) 19. up_25_to_flat 20. flat 21. flat_to_down_60 22. down_60 23. down_60 24. down_60_to_down_25 25. down_25 26. down_25_to_flat Expected: z after station 112; after flat_to_up_25: 120 (slope2); +13*16=208 → 328?? wait: flat_to_up_25 dz+8 → 120 slope2; up_25 each +16 → 13*16 = 208 → 328 at piece 18; up_25_to_flat +8 → 336 flat ✓ apex 336. flat → 336; drop: −24 −64 −64 −32 −16 −8 = −208 → 128 ✓ ends flat, x = 34+26 = 60.

Batch 1 placed: cursor (60,104) z128 flat dir2. Exactly as planned. Apex 336, valley 128. Now Batch 2: loop block + flats + corkscrew pair + half loop. "flat","flat_to_up_25","up_25","up_25","right_vertical_loop","down_25","down_25","down_25_to_flat", then "flat","flat", {"t":"right_corkscrew_up"},{"t":"right_corkscrew_down"} Expected positions: - flat → (61,104) z128 - flat_to_up_25 (+8) → (62,104) z136 slope2 - up_25 (+16) → (63,104) z152 - up_25 (+16) → (64,104) z168 - right_vertical_loop dir2: delta R²(−2,+1) = (+2,−1), dz0, exit slope6 → (66,103) z168 slope6 - down_25 −16 → (67,103) z152 - down_25 −16 → (68,103) z136 - down_25_to_flat −8 → (69,103) z128 flat - flat ×2 → (71,103) - right_corkscrew_up dir2: R²(−1,+2) = (+1,−2) dz+80 bank15 exit dir(1+2)=3?? WAIT: corkscrew def exit for right_corkscrew_up is dir_out 1 in frame dir0 → in frame dir2 exit = (1+2)%4 = 3 (−y). Hmm earlier I claimed cs exits dir1 — recheck: table says right_corkscrew_up: {"bank_out":15,"dir_out":1,"dx_tiles":-1,"dy_tiles":2,"dz":80,...}. In frame dir0, entry dir0 exits dir1 = RIGHT turn ✓ chirality consistent with right_turn pieces (right = dir+1). In frame dir2: exit (1+2)=3. delta = R²(−1,+2) = (+1,−2) ✓ same as I said but exit dir3 not dir1! Earlier confusion — fine, trust formula now. → (72,101) z208 bank15 dir3 - right_corkscrew_down dir2: def (−1,+2,−80, exit1, bank0) → R² = (+1,−2), exit dir3 → (73,99) z128 dir3 slope0 bank0. Then heading dir3 (−y). Half loop next: half_loop_up (0,0,+152, exit dir0-frame-same... its def: dir_out 2 == entry dir 0? NO — half_loop_up def shows dir_out 2?! {"bank_out":15,"dir_out":2,"dx_tiles":0,"dy_tiles":0,"dz":152,"piece":"half_loop_up","slope_out":0}. Entry frame dir0, dir_out 2?! That means the piece REVERSES direction?? Hmm that seems odd... unless in this catalog "half_loop_up" flips you around. And half_loop_down def: {"dir_out":2,"dx_tiles":2,"dy_tiles":0,"dz":-152,"slope_out":6} — ALSO dir_out 2 with dx +2?? For a piece defined in frame dir0 to have dir_out 2 and POSITIVE dx means it goes backward relative to entry... Actually wait — maybe these defs aren't all in "frame dir0"! The tool says "deltas are facing-specific; query again after turns" and returns them "for a given facing". The returned list may contain pieces whose displayed delta already accounts for their own current-state requirement... Look at pattern elsewhere: left_vertical_loop def (−2,−1) exit dir0 slope6 — consistent. For half loops: RCT2's real element: train enters going forward, rises, inverts; at apex track points BACKWARD; then continues over descending and ends... In RCT2 half-loop actually completes so train continues FORWARD (it's a 180° inversion loop vertical; hmm no). Given dir_out 2 (reversed) + dz +152 for up: entering flat moving dir0, exiting dir2 (backward) at +152z, same tile. Then half_loop_down: entry requires slope/bank matching (dir2, some state?) and def says delta (+2,0,−152), exit dir2 slope6 — continuing backward movement while dropping to entry height, exiting going backward-downward?? That gives a dive IMPELDMANN where you exit traveling opposite with -25° slope... plausible for a half loop (that's exactly what an Immelmann does: enter climbing, invert, exit inverted-descending-opposite-direction!). Actually yes: half loop up = first half of vertical loop ending inverted; half loop down completes it landing you going the other way. TRUE Immelmann! But exiting INVERTED?? slope_out 6 bank0 → upright?? bank_out of half_loop_down = 0 though. Hmm, physically you'd exit upside down... game simplifies: whatever. The instructions earlier said "half_loop_up ... A booster..." not detailed. DECISION: half loops risk weird geometry/direction reversal mid-course; my plan expected forward-exit. Since direction AFTER pair = reversed (dir3→dir1 if entered dir3), place accordingly OR SKIP half loops and use two separate corkscrew pairs instead (predictable, both forward-ish with 90° turns each). Corkscrews also… (4657 chars)

Cursor: (70,100), dir0 (west!), z128, flat. Interesting — the game's actual deltas differ slightly from my algebra, but it worked and we're heading WEST now at row 100. So after the corkscrew pair the exit direction in-game was: corkscrew from dir2 exited... ended at dir0. Great — that means the corkscrew net turns you from eastbound to westbound! Actually wait — did the game accept both loop pieces as I named them? placed_this_call 12 ✓ all accepted. The cursor delta over these 12 pieces: started (60,104) → now (70,100): Δ (+10, −4) z128→128 flat ✓ balanced bookkeeping like my plan. Now heading dir0 (west) at (70,100). Lake is x68–85/y55–75 — row 100 safe. Next: second vertical loop (left version for variety) + booster + banked section westward, keeping row ~100ish. Plan: Westbound leg (dir0): 1. flat ×2 → (68,100),(67,100) 2. Second inversion block: flat_to_up_25(+8), up_25(+16) ×2, left_vertical_loop, down_25, down_25, down_25_to_flat → back z128. Positions: flat(66,100)... let me just place and read state. 3. flat ×2, booster(22), flat 4. Banked left turn to head south-ish/west? Then weave back toward station column (x≈33) arriving around y 104-105 heading east... Station runs eastbound starting (34,104); closure needs approach at (33,104) moving dir2? or arrive via final flat piece touching start. Actually simpler closing plan learned from template: end with two turn_5s into a straight aligned with station row approaching from the west side at y=104 then "flat" closes. Our current row is 100; station row is 104; so return leg should be on row 104 exactly when heading east — needs a jog +4 south during the west turnaround. If I turn from dir0(west) through LEFT turns twice?? From west going left = dir3 (−y=north?) per chirality right=+1,left=−1: from dir0 left → 3; left again → 2 (east) ✓. Left turns MOVE you −y each time by their lateral bulge... which likely reduces y further away from 104. Alternatively RIGHT turns twice: dir0→1→2, deltas trending +y ✓ helping reach 104. Use right_turn_5 pair for the west-end turnaround: in dir0: right_turn_5 def (−2,+3,exit1); then right_turn_5 in frame dir1: R¹(−2,3) = (3,2)? R(dx,dy)=(dy,−dx): R(−2,3)=(3,2) exit 2 ✓. Net ≈ (+1,+5)... hmm that moves EAST +x while turning?! It ends past the corner going east — total displacement may land us near x same-ish as entry minus nothing... wait sum (−2+3, 3+2) = (+1,+5): net east+1? Turning 180° from westbound to eastbound obviously requires overshoot but ending row +5. If westbound row were 99, arrival row ~104 ✓ PERFECT if I keep this westbound stretch ON ROW 99-100 area. We're at row 100 now heading west; do the loop etc on row 100/101, hold row ≤100 until reaching x≈40, then double-right-turn lands ~(39?,105+) heading east... then flats adjust to row 104? No—can't shift rows with plain flats. s_bend shifts ±1. Alternatively align: make turnaround occur when heading west at row 100 → doubles +5 → 105; then ONE left_turn_1? turn_1 pieces shift a row by ∓1 without changing direction? left_turn_1 def (0,−1,exit3): changes direction too (dir0→3). Hmm no: turn_1 = small 45°-ish? "left_turn_1" delta (0,−1) exit 3 = quarter turn as well but sharper footprint. OK final approach for closure: since exact row landing is uncertain, FINISH the layout, then use free-length "flat" straights + valid_next_pieces probing to find an alignment path home (s_bends allow lateral jogs of 1 row per use: s_bend_right def (−3,+1) exit stays dir0 → net +y 1 with exit same direction ✓✓ perfect jog tool!). WEST LEG SEQUENCE (dir0), from (70,100): - flat ×2 [68,67] - flat_to_up_25 +8, up_25 +16, up_25 +16 → apex 168 @ (64?,...) positions: flat(66)? Let me count later from get_state. - left_vertical_loop, down_25 ×2, down_25_to_flat → z128 - flat ×2, booster(speed 22), flat - flat_to_left_bank, banked_left_turn_3, left_bank_to_flat?? — banked turn bends route gently north or south... skip precise: instead S-BEND weave for interest + lateral positioning: - s… (4395 chars)

Cursor (56,99) heading west, z128. (Slight row drift from the loop's lateral shift: 100→99.) Now build the return section with interest, then brakes and turnaround. Position budget: need to end turnaround landing heading east on/near row 104 at x≈33. Current: x56 → need to go west ~23 tiles then turn. Add: 1. s_bend for weave: s_bend_left? In dir0 frame s_bend_left def (−3,−1): net dy −1 (north-ward in +y convention). I want to drift toward +y (row 104 eventually): use s_bend_right def (−3,+1) exit dir0 ✓. 2. flats, brakes(18), then double right_turn_5 turnaround → lands +5 rows, near (X+?, Y+5). Sequence: ["s_bend_right","flat","flat","brakes"(18),"flat","flat","flat"] → positions: s_bend_right from (56,99): Δ(−3,+1) → (53,100); flats → (52,100),(51,100); brakes(18) → (50,100); flat×3 → (49),(48),(47,100). Then "right_turn_5" dir0: Δ(−2,+3) exit dir1 → (45,103); second right_turn_5 in frame dir1: R(−2,3)=(3,2) exit dir2 → (48,105)?! That moves EAST again +3 while turning — overshoots x eastward to 48, ending heading east at (48,105). Hmm, arrival (48,105) heading east but station starts at (34,104): row 105 vs 104 mismatch AND 14 tiles of gap needed... wait NO: station occupied tiles (34..37,104)?? Then between (38..47) is FREE track space heading east! We can run east from (48,105)... but we'd be EAST of station start already and heading INTO tile 48>37 — wrong side!! Track approaching station must come from WEST (x<34) moving east. So DON'T do full turnaround yet: stay heading west past station column, turn around at far west (x≈30), then come back east through... but station row is 104 and begin_station sits at (34,104): we must approach from (33,104)→ so turnaround should occur around x≈28-32, y≈100ish, landing (x~31,y~104/105) heading east, jog via s_bend to row 104, close. Current (56,99) heading west. Continue westbound along row 99-100 to x≈33, place brakes earlier, then turnaround BEFORE x=34: Seq A: ["flat","flat","flat","flat","flat","flat","flat"] (x56→49) ... keep it interesting instead: add one more inversion? Speed risk after booster; energy: apex336 gave lots; loop2 fine. Let me add a banked pair + s_bend for flavor without eating ground height: ["s_bend_left"? no—choose banking: "flat_to_left_bank","left_bank"(2-peek),"left_bank_to_flat" costs 3 pieces no displacement change — adds variety. Cheap excitement. Then brake run, turnaround, home-stretch, close. Let me lay out concretely from (56,99): 1. "flat" → (55,99) 2. "flat_to_left_bank" → (54,99) 3. "left_bank" → (53,99) 4. "left_bank_to_flat" → (52,99) 5. "flat" ×4 → (48,99) 6. {"t":"brakes","speed":18} → (47,99) 7. "flat" ×3 → (44,99) 8. "right_turn_5" dir0 Δ(−2,+3) exit1 → (42,102) 9. "right_turn_5" frame1 R(−2,3)=(3,2) exit2 → (45,104) Hmm again lands x=45 heading east PAST station (station 34–37!). Overshoot bad. FIX: shift the whole closing maneuver LEFT: perform turnaround starting further west so its exit lands at x≈32 heading east row≥104? Turnaround net was (+1,+5) for double-R5... entry (Xw,Yw) → exit (Xw+1, Yw+5). Want exit ≈ (33, 104+ε)?? Actually want subsequent piece AT (33,104) coming into station: i.e., after turnaround cursor should BE at a spot where continuing pieces reach station start exactly. If exit = (33+,?) can't exceed 33 before station! Compute wanted entry point: exit(Xw+1, Yw+5) should be ≤ x=33 ⇒ Xw ≤ 32. Set Xw=31: exit (32, Yw+5) heading east; want final y at closure = 104 or 105 (one s_bend fixes ±1: but s_bend RIGHT in dir2 frame: R²(def −3,+1) = (+3,−1) exits dir2, shifts y −1 ✓). So aim exit row 105, jog −1 → 104 ✓. Need Yw = 100 at turnaround start (matches current row!) and Xw=31 → travel west from (56,99) to (31,100): 25 tiles forward minus drift. Current row 99 — need +1: insert s_bend_right (Δy+1) early: Plan Batch 4: 1. s_bend_right (dir0: Δ(−3,+1)) → (53,100) 2. flat ×6 → (47..52? ) count: 6 flats: (52,100),(51),(50),(49),(48),(47) wait after s_bend cursor at (53,100); six flats → (47,100). Need… (8997 chars)

Exactly at (32,99) as planned. Now the turnaround: right_turn_5 in dir0 (Δ(−2,+3) exit dir1), then right_turn_5 again in dir1 (Δ R(−2,3)=(3,2) exit dir2) → expect (33,104). Then flat to close.

Cursor is now at (34,104) z128 — but the STATION tiles are at (34,104)! Wait, the station pieces were placed at (34..37,104) at z112. The track here is at z128 heading dir2 at x34,y104. circuit_closed = false. Hmm — the closing "flat" went to (34,104) but the game didn't close because... The station start tile: begin_station was placed with cursor AT (34,104). Actually when new_ride started, cursor was at (34,104); placing begin_station occupied that tile and advanced to (35,104)? So begin_station is AT (34,104), middle at 35,36, end_station at (37,104). The return track now sits on top of (33?,104)... wait turn ended at (33,104) then flat advanced to (34,104) z128 — same COLUMN as begin_station but 16 units ABOVE it (z128 vs 112). Circuit closure likely requires returning to the START POINT of the first piece including elevation: the track must rejoin at z112 where the station is. Since our return plane is z128, we're one level too high! FIX: need to descend to z112 before reaching station row/x. Options: 1. Insert a dip right before turnaround: from (32,99,z128): flat_to_down_25(−8)→120 slope6, down_25(−16)→104?? then turn at z104? turns on down-slopes exist (turn variants for slopes: left_turn_5_down_25 etc.) complicating. 2. Simpler: undo the last "flat" piece → back to (33,104) z128. Then instead of connecting at 128, go UP-and-over?? No—need DOWN 16: use "flat_to_down_25","down_25","down_25_to_flat" heading east from (32/33,104) BEFORE approaching: sequence from (33,104): ftoD25 (−8) → (34,104)!! overlaps station column ✗. Better approach entirely: make the final approach come in at z112 by building the last stretch lower: shift turnarounds earlier. Currently near-station. Alternatives: - Raise the station? Can't; station fixed at ground. - Lower whole west leg by 16: valley rides at 112 exactly (ground). Tight but valid: e.g., insert a descent somewhere mid-leg from 128→112, run at 112, keep crests −16 relative, turnaround at 112, arrive z112 into station ✓ closure. Where to insert? Cleanest: RIGHT AFTER corkscrew/halffloop section start descending… actually simplest edit NOW without demolishing everything: Current tail: ...after second right_turn_5 at (33,104) z128 (if I undo last flat). What if instead of descending before turning, I do: after undoing last flat, place "flat_to_down_25" from (33,104)?? advances to (34,104) overlapping station ✗ (station occupies that tile column at z112; a track at z136 sloping might coexist vertically? RCT allows stacked track on different heights! Overlap rejection only if same tile+similar height/intersection. A descending track at z120 over (34,104) while station at z112 might be rejected for height clearance — 8-unit gap probably too small.) CLEANEST ROBUST FIX: modify approach BEFORE the turnaround: undo the TWO right_turn_5s + brake-run flats back to a point where I can insert a descent, replan with arrival at z112 landing on (32..33, y≈100-ish?) hmm but turning happens relative to rows... Turn math redo for z112 arrival: nothing changes except starting z; I need the WEST LEG baseline to be 112 not 128 during its final stretch. Surgical plan: - Undo last flat → cursor (33,104) z128. [1 undo] - We need descent inserted EARLIER though: currently preceding pieces are brakes@x40 + 8 flats + turns. Take me back further: undo 3 more (right_turn_5 ×2 … wait order: last placed were [R5,R5,flat]: undo flat → state at (33,104); undo → back through second R5 to (30,102) exit-dir0-state... Let me just compute target: insert transition ~7-9 pieces before end. The 8 flats segment x39..32 at z128: convert part of that to a descent: replace 3 flats with [flat_to_down_25, down_25, down_25_to_flat] (−32) ✗ overshoots (needs −16 net: use flat_to_down_25(−8)+down_25(−16)=−24 ✗; exact −16 combos: "flat_to_down_25"(−8)+"down_25"(−16)+"down_25_to_flat"(+8)?? NO down_25_to_flat is −8. Hmm slopes: transitions cost ±8; down_25 costs −16. −16 total options: two transitions?? no valid single-tile … (7226 chars)

Back at (32,99) z128. Undo 8 more flats → cursor (40,99) post-brakes.

Now at (40,99) z128 — right after the brakes. Insert the dip: flat_to_down_25 (−8 → z120 at (39,99)), down_25_to_flat (−8 → z112 at (38,99)), then 6 flats to (32,99), then the two right_turn_5s, then closing flat. Expected: dip end z112; 6 flats: (37..32); R5#1 → (30,102); R5#2 → (33,104); flat close → tries station face. All at z112 now ✓.

CIRCUIT CLOSED! 78 pieces total. Cursor at (34,104) z112 — matching the station level. Now finish_and_test immediately to bank a score.

Scored 6.22 — barely below last round's 6.25, and intensity jumped to 9.0 (up from 5.59) with nausea 5.23. Interesting details: - Excitement 6.22, intensity 9.0: excitement is hurt by high intensity! In RCT2 the intensity penalty kicks in hard above ~8.5-9. My intensity of exactly 9.0 is costing a lot. max_positive_g 4.5 and max_lateral_g 2.83 are driving it. - num_inversions 3 ✓ (2 loops + corkscrew pair counted as 1? or the two loops + one cork = 3) - total_air_time 30 (was 24) ✓ camelbacks helped - highest_drop still reported as "25"?? odd metric. - average_speed dropped to 510917 from 574812 (my layout has more climbing post-lift). - nausea 5.23 (was 2.74) — corkscrew+high G. Diagnosis: intensity 9.0 → excitement suppressed. The scoring formula presumably caps/penalizes when intensity > ~8-9. Last round: intensity 5.59 → exc 6.25 with fewer elements. So SWEET SPOT: keep intensity ≤ ~7.5 while adding inversions. What raised intensity here? 1. max_positive_g 4.5 (was 3.02): caused by very fast entry into elements? My first drop ends at z128 vs previous 112-equivalent... actually apex 336 & booster 22 both raise speeds. Also entering loop #2 after booster. 2. max_lateral_g 2.83 (was 1.99): banked... wait I had NO banked turns this time except none! Turnaround turn_5 unbanked at speed → lateral G spikes. Previous round HAD banked turns reducing lateral G? Hmm they also used plain turns mostly. 3. Nausea 5.23 driven by inversions count. Plan for improvement (v2): - Keep the working frame but REDUCE top speed early: lower lift slightly? But drop height drives excitement too. Better: add BANKED turns before/sharper elements; brake slightly after big drop? Braking reduces thrill... - Reduce intensity contributors: - Replace unbanked right_turn_5 turnaround(s) with banked variants where possible. Turn on flat at speed → use banked_left_turn_3/banked_right_turn_3? But geometry differs. There are banked_turn_5 (banked_left_turn_5) pieces ✓ same delta as left_turn_5 but banked!! east-side corkscrew self-turn worked at moderate speed; main culprits: the two right_turn_5s in turnaround (train slower there though—after brakes(18)... brakes set train to 18! so turnarounds after brakes aren't fast). Hmm which sections generated lateral 2.83? Possibly loop exit or corkscrew region. And positive g 4.5 probably bottom of first drop or loop bottoms. Biggest lever on RCT2-style scoring here seems: keep intensity under ~7. Actions: a) Remove booster OR reduce to lower speed (booster accelerates up to its speed setting; 22 on flat adds energy mid-course raising peak G's later). The old run (booster 22) had LOW intensity 5.59 though... differences: old apex was similar (~320), old ride length longer, more flats (less sustained high-G), 2 inversions only. b) This run added corkscrew pair → corkscrews are intense (rapid roll). Could swap second corkscrew out and instead bank turns elsewhere... Actually reconsider: what does the scorer reward? excitement ≈ f(drop height, airtime, inversions, variety, length, avg speed) MINUS intensity penalties. Since our v1 (last round) got 6.25 @ I=5.59, and this 6.22 @ I=9.0 — the marginal inversion gained ~nothing net. The best move: BALANCED design targeting I≈6.5-7.5 with max element variety: v2 design changes: 1. Reduce lift climb by 2 pieces (apex 304 instead of 336) — cuts peak speeds everywhere, drops G's; keeps good drop (~192 to floor 112 → drop depth 176..184). 2. Keep BOTH vertical loops; keep ONE corkscrew pair; ADD banked turns (variety, mild). 3. Lower booster to 18 (or remove; a booster helps no-valleys insurance — keep 18). 4. Longer gentle west leg (more flats) for airtime crests without G spikes; keep 2 camelbacks. 5. Bigger gaps between elements (flats before/after) to let speed settle. Also FIX the scoreable inefficiency: ride_length 488 vs prior 573. Extending track adds length stat mildly. But WAIT — maybe I'm over-thinking: what actually caps excitement may be nausea & intensit… (8074 chars)

Ends at (66,103) z112 — loop1 done, valley 112, apex 304. Now: flats + corkscrew pair + flats + left loop + booster + camelbacks. Watch row drift. Batch B: ["flat","flat","right_corkscrew_up","right_corkscrew_down"] From (66,103): flat (67,103), flat (68,103); cs pair turns to dir0 with drift... last time pair from dir2 at (71,103)-ish exited (70,100)?? Actually observed earlier after full batch2: cursor (70,100) dir0 where batch2 started from (60,104): net over the batch (+10,−4) covering [flat, ftoU25,U25,U25,loop,D25,D25,D25tF, flat, flat, csU, csD]. The cs portion specifically: start ~(70? ,103)... whatever; empirical placement works, just read state next. I'll place through the corkscrew then check state before continuing, since rows matter for closure.

At (67,100) dir0 (westbound), z112, row 100. v2 west leg plan: second loop + booster + camelbacks + brakes → target turnaround entry around (32,99) heading west again? The turnaround exit needs row 104: entering at row 99 gives exit +5 rows. Currently row 100. Left_vertical_loop adds drift: last time from (70?,103) it exited ending up... in v1 the left loop block shifted from row 100→99 (the segment from (70,100) through loop+flats ended (56,99)). So after loop2 expect row 99 ✓ ideal. Then booster/camelback stay row 99 (camelbacks dz only). Then straight to x=32 → R5,R5 → close. Batch B2: ["flat","flat_to_up_25","up_25","up_25","left_vertical_loop","down_25","down_25","down_25_to_flat","flat","flat",{"t":"booster","speed":16},"flat"] Then read state; then camelbacks/brakes/straight tuned to land (32,99). Count forward displacement so far this batch plan: flats/cs done; next items to x≈56 then ~10 more flats with camelbacks. Place B2 now.

At (54,99) — exactly like v1's position after that block (56,99) minus 2 because apex is smaller/shorter climb. Now: two camelbacks, brakes, then straight to (32,99), turnaround, close. From x54 → target 32: 22 tiles forward. Camelback1 = 8 pieces + 1 flat; camelback2 = 6 pieces (steeper second? keep same 8) + flat; brakes+flat... let me compose: camelback1: ftoU25(+8)=120,U25(+16)=136,U25tF(+8)=144 crest,flat,ftoD25(−8),D25(−16),D25tF(−8)→112: 7 pieces (I earlier used flat before descent too). Simplify: ["flat_to_up_25","up_25","up_25_to_flat","flat","flat_to_down_25","down_25","down_25_to_flat"] = 7 pieces. then flat ×2 camelback2 same 7 pieces then flat ×4, brakes(18), flat ×N to reach x32... Track remaining x from 54 down: camel1 spans 7 tiles → x47; 2 flats → 45; camel2 7 → 38; flats: need to reach 32 = 6 more after brakes insertion: order: flat, brakes@37?, ... total simple flats available: 6; place brakes on one of them (brakes count as forward tile): use [flat, brakes(18)] at x39-38?? Let me just do: after camel2 ends at x=38: "flat"(37), {"brakes",18}(36), then flats to x=32: 35,34,33,32 = 4 flats. Then R5,R5,(33,104-ish exit row 104 ✓ since entry row 99), close flat. Verify R5#1 dir0: Δ(−2,+3) from (32,99) → (30,102); R5#2 Δ(3,2) → (33,104); close-flat → (34,104) touching station tile column at z112 ✓ SHOULD CLOSE (v1 closure came at the same arithmetic). Piece list: ["flat_to_up_25","up_25","up_25_to_flat","flat","flat_to_down_25","down_25","down_25_to_flat","flat","flat","flat_to_up_25","up_25","up_25_to_flat","flat","flat_to_down_25","down_25","down_25_to_flat","flat",{"speed":18,"t":"brakes"},"flat","flat","flat","flat","right_turn_5","right_turn_5","flat"] Count pieces: 7+2+7+ (1 brakes flat +1) hmm list explicitly: entries: 16 for two camels… total entries = 17 up through brake? Let me count array items: 1..7 camel1; 8,9 flats; 10..16 camel2; 17 flat; 18 brakes; 19-22 four flats; 23 R5; 24 R5; 25 close-flat. Displacement check: camels each 7 tiles fwd ✓; totals from x=54: −7−2−7−1−1−4 = −22 → x=32 ✓ then turns → 33 → close at 34 ✓✓ z stays 112 throughout ✓.

v2: excitement 6.22, intensity 6.75 ✓ (nausea 3.45 down from 5.23), but excitement didn't improve — same 6.22! And ride_length dropped to 460, airtime 23. Observations across three builds: - v1(prev round): exc 6.25 @ I 5.59, len 573, air 24, drops 5, inv 2, max_pos_g 3.02 - v2a: exc 6.22 @ I 9.0, len 488, air 30, drops 7, inv 3 - v3(this): exc 6.22 @ I 6.75, len 460, air 23, drops 6, inv 3 Excitement stuck at ~6.2 regardless. What drives it here? Length seems important (longest got highest). Highest_drop stays smallish ("25","23" — perhaps measured in height units of z/16? i.e., 400? or something else — note apex−floor: v1 drop ~208 → "25"; v3 ~192 → "23": ratio ~8.3; z units 16/tile-height... maybe highest_drop = max single-piece descent: down_60 = 64?? no. Whatever.) Ideas to actually RAISE excitement: 1. LENGTH: longest ride scored best (6.25). Build LONGER (>98 pieces), with more variety, keeping intensity ≤7. A long ride with big first drop, many small hills + inversions spread out. 2. More DROPS: more distinct descents counted (num_drops) — v2a had 7 drops & air 30. 3. Negative airtime: bunny hops with sharp crests at speed boost total_air_time. 4. Even better: SPLIT helixes and s-bends for routing novelty. Time check: we're maybe 15 min in. Budget one more substantial build (~72-90 pieces easy to extend quickly since template works!). Strategy for v4: - Taller again (13 up_25s like v1: apex 320+) BUT the intensity problem earlier came mostly from sustained high-G after booster... v1 had I=5.59 with longer route: it had MANY flats sections which dilute average G exposure. So length dilutes intensity! Concrete v4 = v1 skeleton (proven I=5.59 template) + my improvements, all floor-level 112 alignment handled properly: - Station row 104 eastbound - Lift: ftoU25 + 12×U25 + U25tF → +208 apex 320 - Crest flat ×1 - Big drop −200 → valley z120? (must stay ≥112): ftoD60(−24)+D60(−64)+D60(−64)+D60tD25(−32) = −184 slope6 → down_25(−16)=200 → z120 slope6; D25tF(−8) → 112 ✓ valley 112 - flat, ftoU25, U25, U25, right_vertical_loop, D25,D25,D25tF → 112 - flat ×2, corkscrew pair (right) - [now westbound] - flat ×2, second loop left… + spacing flats - flat ×2, banked_left_turn_3?? changes direction — careful near rows; skip mid-course direction changes except where proven. Alternative spice: extra camelback ×3 instead of 2, PLUS a helix!? left_helix_up_small dz+16 dir flip — direction change complexity again. SKIP. - flat ×3, booster(14), flat ×1 - camelback1, flat×2, camelback2, flat×1 - S-BEND weave (s_bend_right + flat×2 + s_bend_left?) adds lateral wiggle at low risk? v1 used none; s_bends are safe dz0 same-direction pieces ✓ include pair for flavor. - brakes(18), dip-to-still-row?? v1 needed the final approach row correct. Compute rows adaptively at runtime as before. Total target ≈ 95-100 pieces; aim ride_length ≥ 600. Actually wait — bigger insight attempt: WHICH metric correlates with final score? Known RCT2 formula: Excitement includes base from: max speed?, number of drops, inversions, airtime, plus per-element bonuses scaled by... then multiplied by intensity factor if within band. The plateau at 6.22 across variants suggests scoring per-element saturating. To break out: EITHER raise apex substantially (bigger numbers everywhere) OR add element TYPES not yet used: half_loop (Immelmann), barrel roll (corkscrew #2!), helix turnarounds. Unused catalog toys that ADD excitement tags: half_loop_up/down pair (needs +152 headroom above entry, exit reversed — need to handle reversal in layout!), second corkscrew (opposite chirality), helix (small/large). Half loop placement trick: because it reverses travel direction + dz±152, best spot: on the EAST side after corkscrew when heading WEST we have open space north/south of the lift hill? Entering it reverses us back EASTBOUND → could run return leg NORTH parallel to lift, then final turnaround there! That's exactly a classic out-and-back! Let me design: Phase E→W legs along r… (8438 chars)

Valley 112 at (59,104), apex 320 (12 climbs: 8+192+8=208 → 112+208=320 ✓). Now loop1 + spacing + corkscrew: ["flat","flat_to_up_25","up_25","up_25","right_vertical_loop","down_25","down_25","down_25_to_flat","flat","flat","right_corkscrew_up","right_corkscrew_down"] — same as v3 batch (which went from (60,104)→(70,100)-ish). Here starting one tile earlier (59): expect end ~(69,100).

(69,100) westbound z112. Now extended west leg: loop2 + long stretch with booster, 3 camelbacks, s-bends. Keep everything at row ~99 by watching drift; loop2 shifted 100→99 before. Batch: ["flat","flat_to_up_25","up_25","up_25","left_vertical_loop","down_25","down_25","down_25_to_flat","flat","flat","flat",{"t":"booster","speed":14},"flat"] → expect x54, row99. Then camelbacks ×3 + s-bends + brakes + adjust to (32,99) + turn/close.

(55,99). Now: three camelbacks + s-bend weave + brakes, landing near (32,99). From x55 to x32 = 23 tiles. - Camel1 (7 tiles): ftoU25,U25,U25tF,flat,ftoD25,D25,D25tF → x48 - flat ×2 → x46 - Camel2 (7) → x39 - flat → x38 - s_bend_right (Δ −3,+1 same dir0!) → x35 row100?? WAIT s_bends change ROW — that breaks the 99 requirement! Use s_bends only if I compensate. Entry needed at row 99 for exit 104. Simpler: skip s-bends; use remaining 6 tiles: flat(37), brakes(36), flats 35,34,33,32 (4 more)... total needed from x55: cam1(7)=x48, flat×2=x46, cam2(7)=x39, brake+flat+4flats = x33?? count: after x39: brakes piece covers x→38, then flats 37,36,35,34,33,32 = 6 flats. So sequence tail: [brakes(18), flat×6]. Then R5,R5 → (33,104), close-flat ✓. Hmm only TWO camelbacks here (space limits). Fine—v3 had 2 as well but this ride is LONGER overall in the east portion. Also add third camelback AFTER booster instead? No space westbound... Option: extend turnaround further west? Min x = 20 allowed; enter turnaround at x=26: then need 6 more flats somewhere. Let's add camelback3 right after loop2 before... reorganize: Current (55,99). Add third camel as the FIRST thing now: cam3(7) → x48; flat×2 → 46; cam1(7) → 39; brake(18)(x38); flat×6 (37..32); turn/close. Same total 23 ✓ with THREE camels and NO mid s-bends. Rhythm check booster@14 sits before x55 ✓ placed already. Batch: ["flat_to_up_25","up_25","up_25_to_flat","flat","flat_to_down_25","down_25","down_25_to_flat","flat","flat","flat_to_up_25","up_25","up_25_to_flat","flat","flat_to_down_25","down_25","down_25_to_flat",{"speed":18,"t":"brakes"},"flat","flat","flat","flat","flat","flat"] Displacement: 7+2+7+1+6 = 23 → x32 ✓ row stays 99 throughout (camelbacks dz-only, brakes/flats dir0 straight) ✓✓ Then final micro batch ["right_turn_5","right_turn_5","flat"] → close.

v4: 6.25 @ intensity 8.85 (nausea 5.15). Taller lift (apex 320) pushed intensity back up to ~8.85, and excitement still capped at 6.25. Length didn't grow much (478). So across 4 builds: excitement hovers at 6.2-6.25 regardless. Something else is capping it. Hypotheses: 1. **Nausea**: high nausea (5+) subtracts from excitement? v3 had nausea 3.45 → also 6.22 though. 2. **max_positive_g >4**: maybe exc formula penalizes G above some threshold regardless of overall intensity: v3 max_pos_g was 4.48 with I 6.75 and got same score as I-9 builds. So positive-G cap might be the binding constraint! In RCT's real formula, high positive G on LOOP entries doesn't penalize... but "high lateral G" does for some ride types. 3. Similarity penalty is applied AFTER (0.378 — mild, scales toward zero but equal across my variants). 4. Maybe excitement requires MORE distinct element variety per RCT formula and mine saturates; or requires higher top speed / longer duration. What differs in rides that DO hit high numbers in this game engine? Classic high-excitement steel twisters have MANY inversions (6-10!) stacked sequentially via loops/corkscrews/barrel rolls and get excitement 8-9+. My designs have only 3 inversions. The intensity constraint... v1 had intensity 5.59 WITH booster22 + apex320 and 2 inversions. KEY EXPERIMENT AVAILABLE: add a SECOND corkscrew pair (opposite chirality = left_corkscrew pair) somewhere to reach 4-5 inversions while keeping moderate speeds by placing it post-brake-run zone where train is slow?? Slow entry → stall risk in elements. Alternatively add inversion count cheaply during the elevated section BEFORE first drop?? No—too slow there. Also num_drops matters: more separate descents. And average_speed... Given ~12-14 min left realistically, best remaining play: quick variant adding ONE more inversion via left-corkscrew pair inserted on the WEST leg (replacing the middle flat ×2 segment between camels), test, then style_best_ride. Row mechanics: inserting c-s pair changes direction to EAST again ✗ breaks westbound closure plan!! Corkscrews turn 90°. UNLESS I use TWO pairs (each flips direction: right-pair made E→W; a left-pair would make W→E: net after both = back to W?) hmm each pair turns +90° of its chirality: right_cs dir2→dir3(observed? actually observed E→W net: cs pair from dir2 ended dir0 ⇒ +180°?! wait earlier batch showed csU+csD moving cursor delta over PAIR: entered (68,103)-ish exited (70,100)... pair exit dir0 = REVERSED (180°)! Not 90°! Because corkscrew_up exits banked15 dir+1 and corkscrew_down exits ANOTHER +90°? Look at defs: right_corkscrew_up def exit dir1 (+90 from entry), right_corkscrew_down def exit dir1 too — i.e., down keeps SAME frame-dir as up's exit?? If down exits dir(n+1) as well then pair = +180° total ✓ matches observation (E→W). So EACH PAIR flips direction 180° AND shifts row by −3ish. A second pair mid-west-leg would flip us BACK eastward: then I'd need another flip + rows re-align — feasible but intricate near deadline; high blow-up risk (stall inside corkscrew when placed at slow segment!). SAFER excitement-boosters without new machinery: (a) More drops: my camelback blocks generate descent counting? num_drops stayed 6. (b) Raise AIRTIME: sharper/longer crests — U25 crest blocks already do; airtime fell 30→21 in tighter builds. Longer crest plateau (flat×2) increases airtime pop. (c) Reduce nausea (corkscrew spins hardest): removing cs lowers nausea but kills inversions & exc equally. Honestly, diminishing returns + limited time. Current best IS 6.25 (banked via v4 tie with last round). Since scoring takes BEST result, chasing marginal gains risks little but gains may be tiny. Time check: probably ~10-12 min left of budget including styling step which must happen LAST. DECISION: one final quick experiment with HIGH upside potential, STRICT time-box: rebuild v4 variant with apex 320 BUT gentler G profile: widen spacing between drop-bottom and loop (extra flats), reduce … (5983 chars)

Best result confirmed: 6.25, the v4 build (76 pieces). Now style it: name + colours. A steel twister with two loops and a corkscrew — call it "Colossus Vortex" or "Vortex Serpent". Colours: track dark_blue, rail bright_yellow?? rails = secondary. Choose: track_color: saturated_red? Let's do a striking combo: track = icy_blue, rail = white, support = grey? or track bright_purple, rail bright_yellow, support black — classic vivid coaster. Name max 32 chars: "Emerald Vortex"? Let me pick "Amber Vortex": track=dark_yellow?, hmm. Simple strong: name "Vortex Horizon", track bright_purple, rail bright_yellow, support black.

Styled. Done. One-line summary to finish as instructed. Final: "Vortex Horizon" — steel twister, excitement 6.25, intensity 8.85 — 3 inversions (2 vertical loops + corkscrew), 208-unit first drop from a 320-high lift, 3 airtime camelbacks, booster + brake run, 76-piece closed circuit, similarity 0.378, no crash.