8f33565 · terrain-lookdev

terrain-lookdev commits / 8f33565

lookdev: expose field_half_range, so the harness runs the map's parameters

erosion_render gains --set field_half_range; sweep_assumed_slope's MAP_PARAMS
and gate_dc_vs_lookdev's map parser both carry it. Without this the harness
would silently run the OLD slope normalisation while the engine ran the new one
— the same parameters-not-implementations mistake the gate itself was fixed for
in c7e41fb.

8f33565f70011ff3be350a2081423b001d299f34

by plankatron <fleeky@gmail.com> · 2026-09-02T14:59:06.000Z

Changed files (3) +8 -1

erosion_render.cpp +1 -0

…	…	@@ -353,6 +353,7 @@ static void set_param(ErosionWrapperParams& p, const char* k, const char* v) {
353	353	else if (!strcmp(k, "onset_ridge_oct")) p.onset_ridge_oct = f;
354	354	else if (!strcmp(k, "assumed_slope_mag")) p.assumed_slope_mag = f;
355	355	else if (!strcmp(k, "assumed_slope_mix")) p.assumed_slope_mix = f;
	356	else if (!strcmp(k, "field_half_range")) p.field_half_range = f;
356	357	else { fprintf(stderr, "unknown parameter '%s'\n", k); exit(2); }
357	358	}
358	359

gate_dc_vs_lookdev.py +3 -1

…	…	@@ -52,6 +52,7 @@ def map_params():
52	52	gully, depth = const("EROSION_GULLY_METRES"), const("EROSION_DEPTH_METRES")
53	53	k = const("EROSION_AMPLITUDE_K")
54	54	hs, gain = const("EROSION_HEIGHT_SCALE"), const("EROSION_GAIN")
	55	fhr = const("EROSION_FIELD_HALF_RANGE")
55	56	oct_ = const("EROSION_OCTAVES")
56	57	# The map's own two derivations, mirrored (map :602 and the erosion_scale line).
57	58	strength = depth * th * cell / (k * gully)
…	…	@@ -59,7 +60,8 @@ def map_params():
59	60	vals = [("floor_y", floor_y), ("ceiling_y", ceil_y), ("terrain_height", th),
60	61	("en_height_scale", hs), ("en_strength", strength),
61	62	("en_erosion_scale", escale), ("en_cell_scale", cell),
62		("en_octaves", int(oct_)), ("en_gain", gain)]
	63	("en_octaves", int(oct_)), ("en_gain", gain),
	64	("field_half_range", fhr)]
63	65	out = []
64	66	for kk, vv in vals:
65	67	out += ["--set", kk, str(vv)]

sweep_assumed_slope.py +4 -0

…	…	@@ -47,6 +47,9 @@ MIXES = [1.0, 0.75, 0.5, 0.25, 0.0]
47	47	FLOOR_Y, CEILING_Y, TERRAIN_HEIGHT = -10900.0, 10100.0, 60000.0
48	48	GULLY_METRES, DEPTH_METRES = 60.0, 30.0
49	49	CELL_SCALE, OCTAVES, GAIN, HEIGHT_SCALE = 0.7, 7, 0.5, 5.0
	50	# The FIELD's half-relief, the SLOPE's vertical unit. Measured over all 841
	51	# cached tiles: -4829..5110 m. NOT the playable y_range, which is 2.1x larger.
	52	FIELD_HALF_RANGE = 4970.0
50	53	EROSION_H = (CEILING_Y - FLOOR_Y) * 0.25 * 0.5 # map :313
51	54	MAP_PARAMS = [
52	55	("floor_y", FLOOR_Y),
…	…	@@ -58,6 +61,7 @@ MAP_PARAMS = [
58	61	("en_cell_scale", CELL_SCALE),
59	62	("en_octaves", OCTAVES),
60	63	("en_gain", GAIN),
	64	("field_half_range", FIELD_HALF_RANGE),
61	65	]
62	66
63	67