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Lighting fixes (#1886)

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changes:

Fixes directional lights not obeying Face-Direction.
LIGHT_SEMI now works properly when a light is facing NORTH or SOUTH.
Fixes #1884
This commit is contained in:
Lohikar
2017-03-05 16:30:34 -06:00
committed by skull132
parent e2725ab4cb
commit 9cb32e0653
1 changed files with 13 additions and 7 deletions
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20
code/modules/lighting/lighting_source.dm
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@@ -252,6 +252,7 @@
#define POLAR_TO_CART_X(R,T) ((R) * cos(T))
#define POLAR_TO_CART_Y(R,T) ((R) * sin(T))
#define PSEUDO_WEDGE(A_X,A_Y,B_X,B_Y) ((A_X)*(B_Y) - (A_Y)*(B_X))
#define MINMAX(NUM) ((NUM) < 0 ? -round(-(NUM)) : round(NUM))
/datum/light_source/proc/update_angle()
var/turf/T = get_turf(top_atom)
@@ -268,10 +269,14 @@
test_x_offset = cached_origin_x
cached_origin_y = T.y
test_y_offset = cached_origin_y
old_direction = top_atom.dir
if (istype(top_atom, /mob) && top_atom:facing_dir)
old_direction = top_atom:facing_dir
else
old_direction = top_atom.dir
var/angle = light_angle / 2
switch (top_atom.dir)
switch (old_direction)
if (NORTH)
limit_a_t = angle + 90
limit_b_t = -(angle) + 90
@@ -298,9 +303,13 @@
// Convert our angle + range into a vector.
limit_a_x = POLAR_TO_CART_X(light_range + 10, limit_a_t)
limit_a_x = MINMAX(limit_a_x)
limit_a_y = POLAR_TO_CART_Y(light_range + 10, limit_a_t) // 10 is an arbitrary number, yes.
limit_a_y = MINMAX(limit_a_y)
limit_b_x = POLAR_TO_CART_X(light_range + 10, limit_b_t)
limit_b_x = MINMAX(limit_b_x)
limit_b_y = POLAR_TO_CART_Y(light_range + 10, limit_b_t)
limit_b_y = MINMAX(limit_b_y)
// This won't change unless the origin or dir changes, might as well do it here.
targ_sign = PSEUDO_WEDGE(limit_a_x, limit_a_y, limit_b_x, limit_b_y) > 0
@@ -314,15 +323,12 @@
var/tb = PSEUDO_WEDGE(test_x, test_y, limit_b_x, limit_b_y)
// if the signs of both at and tb are NOT the same, the point is NOT within the cone.
if ((at > 0) != targ_sign)
return TRUE
if ((tb > 0) != targ_sign)
return TRUE
return (((at > 0) != targ_sign) || ((tb > 0) != targ_sign))
#undef POLAR_TO_CART_X
#undef POLAR_TO_CART_Y
#undef PSEUDO_WEDGE
#undef MINMAX
// This is the define used to calculate falloff.
#define LUM_FALLOFF(C, T) (1 - CLAMP01(sqrt((C.x - T.x) ** 2 + (C.y - T.y) ** 2 + LIGHTING_HEIGHT) / max(1, light_range)))