sneak
e595b87718
Instrumented the C game on modern-rogue with a DUMP mode (patch in
testdata/c_seedcompat.patch) that forces the RNG seed and prints the
per-seed item appearance tables — potion colors, scroll names, ring
stones, wand/staff materials — in the normal init order, before initscr
so no terminal is needed. Captured its output for four seeds as
testdata/item_tables.golden.
TestSeedCompatItemTables regenerates the same tables from the Go port
via New(Params{Seed, Wizard: true}) and checks they match the golden
byte for byte. They do, for all four seeds — proving the LCG and its
consumption order through the whole init sequence (init_probs →
init_player → init_names → init_colors → init_stones → init_materials,
including init_player's arrow rnd(8)+rnd(15)) agree with C exactly.
testdata/README.md documents how to regenerate the golden.
38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
--- a/main.c 2026-07-24 03:02:38
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+++ b/main.c 2026-07-24 02:48:31
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@@ -63,6 +63,34 @@
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#endif
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dnum = lowtime + md_getpid();
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seed = dnum;
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+
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+ /* SEEDCOMPAT: dump the per-game item appearance tables for a fixed
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+ * seed and exit, without initscr. The init sequence and everything
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+ * it consumes from rnd() mirror the normal startup (main.c), so the
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+ * tables are exactly what a real game with SEED would show. */
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+ if (getenv("DUMP") != NULL)
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+ {
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+ int di;
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+ char *sv = getenv("SEED");
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+ if (sv != NULL)
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+ seed = atoi(sv);
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+ printf("SEED %d\n", seed);
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+ init_probs();
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+ init_player();
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+ init_names();
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+ init_colors();
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+ init_stones();
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+ init_materials();
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+ printf("POTIONS\n");
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+ for (di = 0; di < MAXPOTIONS; di++) printf("%s\n", p_colors[di]);
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+ printf("SCROLLS\n");
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+ for (di = 0; di < MAXSCROLLS; di++) printf("%s\n", s_names[di]);
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+ printf("RINGS\n");
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+ for (di = 0; di < MAXRINGS; di++) printf("%s\n", r_stones[di]);
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+ printf("STICKS\n");
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+ for (di = 0; di < MAXSTICKS; di++) printf("%s %s\n", ws_type[di], ws_made[di]);
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+ exit(0);
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+ }
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open_score();
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