Follow-up Comment #1, patch #2404 (project freeciv):
exemplary output for the experimental ruleset (tech cost style 1) with the
follwoing command:
# ./ser -d 4:techtools.c
[...]
(freeciv) rulesetdir experimmental
(freeciv) set minp 0
(freeciv) set aifill 1
4: [player 0] None (ID: 0) cost: 0 - reachable:
yes (now) / yes (ever)
4: [player 0] Advanced Flight (ID: 1) cost: 4303 - reachable:
no (now) / yes (ever)
4: [player 0] Alphabet (ID: 2) cost: 28 - reachable:
yes (now) / yes (ever)
4: [player 0] Amphibious Warfare(ID: 3) cost: 2342 - reachable:
no (now) / yes (ever)
4: [player 0] Astronomy (ID: 4) cost:185 - reachable:
no (now) / yes (ever)
4: [player 0] Atomic Theory (ID: 5) cost:828 - reachable:
no (now) / yes (ever)
4: [player 0] Automobile(ID: 6) cost: 3119 - reachable:
no (now) / yes (ever)
4: [player 0] Banking (ID: 7) cost:316 - reachable:
no (now) / yes (ever)
4: [player 0] Bridge Building (ID: 8) cost:226 - reachable:
no (now) / yes (ever)
4: [player 0] Bronze Working(ID: 9) cost: 28 - reachable:
yes (now) / yes (ever)
4: [player 0] Ceremonial Burial (ID: 10) cost: 28 - reachable:
yes (now) / yes (ever)
4: [player 0] Chemistry (ID: 11) cost:640 - reachable:
no (now) / yes (ever)
4: [player 0] Chivalry (ID: 12) cost:270 - reachable:
no (now) / yes (ever)
4: [player 0] Code of Laws (ID: 13) cost: 51 - reachable:
no (now) / yes (ever)
4: [player 0] Combined Arms (ID: 14) cost: 4647 - reachable:
no (now) / yes (ever)
4: [player 0] Combustion(ID: 15) cost: 2625 - reachable:
no (now) / yes (ever)
4: [player 0] Communism (ID: 16) cost: 1895 - reachable:
no (now) / yes (ever)
4: [player 0] Computers (ID: 17) cost: 4417 - reachable:
no (now) / yes (ever)
4: [player 0] Conscription (ID: 18) cost: 1402 - reachable:
no (now) / yes (ever)
4: [player 0] Construction (ID: 19) cost:111 - reachable:
no (now) / yes (ever)
4: [player 0] Currency (ID: 20) cost: 51 - reachable:
no (now) / yes (ever)
4: [player 0] Democracy (ID: 21) cost:700 - reachable:
no (now) / yes (ever)
4: [player 0] Economics (ID: 22) cost:700 - reachable:
no (now) / yes (ever)
4: [player 0] Electricity (ID: 23) cost: 1643 - reachable:
no (now) / yes (ever)
4: [player 0] Electronics (ID: 24) cost: 2529 - reachable:
no (now) / yes (ever)
4: [player 0] Engineering (ID: 25) cost:226 - reachable:
no (now) / yes (ever)
4: [player 0] Environmentalism (ID: 26) cost: 5361 - reachable:
no (now) / yes (ever)
4: [player 0] Espionage (ID: 27) cost: 2070 - reachable:
no (now) / yes (ever)
4: [player 0] Explosives(ID: 28) cost: 1250 - reachable:
no (now) / yes (ever)
4: [player 0] Feudalism (ID: 29) cost:185 - reachable:
no (now) / yes (ever)
4: [player 0] Flight(ID: 30) cost: 2819 - reachable:
no (now) / yes (ever)
4: [player 0] Fusion Power (ID: 31) cost: 4078 - reachable:
no (now) / yes (ever)
4: [player 0] Genetic Engineering (ID: 32) cost: 2250 - reachable:
no (now) / yes (ever)
4: [player 0] Guerilla Warfare (ID: 33) cost: 2918 - reachable:
no (now) / yes (ever)
4: [player 0] Gunpowder (ID: 34) cost:640 - reachable:
no (now) / yes (ever)
4: [player 0] Horseback Riding (ID: 35) cost: 28 - reachable:
yes (now) / yes (ever)
4: [player 0] Industrialization (ID: 36) cost: 1726 - reachable:
no (now) / yes (ever)
4: [player 0] Invention (ID: 37) cost:468 - reachable:
no (now) / yes (ever)
4: [player 0] Iron Working (ID: 38) cost: 80 - reachable:
no (now) / yes (ever)
4: [player 0] Labor Union (ID: 39) cost: 4303 - reachable:
no (now) / yes (ever)
4: [player 0] Laser (ID: 40) cost: 3858 - reachable:
no (now) / yes (ever)
4: [player 0] Leadership(ID: 41) cost:962 - reachable:
no (now) / yes (ever)
4: [player 0] Literacy (ID: 42) cost:111 - reachable:
no (now) / yes (ever)
4: [player 0] Machine Tools (ID: 43) cost: 3119 - reachable:
no (now) / yes (ever)
4: [player 0] Magnetism (ID: 44) cost:828 - reachable:
no (now) / yes (ever)
4: [player 0] Map Making(ID: 45) cost: 51 - reachable:
no (now) / yes (ever)
4: [player 0] Masonry (ID: 46) cost: 28 - reachable:
yes (now) / yes (ever)
4: [player 0] Mass Production (ID: 47) cost: 3222 - reachable:
no