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Add cvars to sprite shadows progressively according to thing <-> floor distance

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This also adds the `r_actorspriteshadowalpha` and `r_actorspriteshadowfadeheight`
cvars for greater control (only effective in hardware renderers).
These are set to 0.5 and 0 by default, which means this fading behavior
is disabled by default.

When enabled, this has two benefits:

- It becomes easier for the player to judge an entity's height since
  the shadow opacity now gives this information.
- Entities that are far high above the ground no longer cast a shadow,
  which looked strange.
This commit is contained in:
Hugo Locurcio 2021-05-23 21:42:14 +02:00 • committed by Rachael Alexanderson
commit ad49d52b1c
2 changed files with 22 additions and 2 deletions
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14
src/rendering/r_utility.cpp
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@ -121,6 +121,20 @@ CUSTOM_CVARD(Float, r_actorspriteshadowdist, 1500.0, CVAR_ARCHIVE | CVAR_GLOBALC
else if (self > 8192.f)
self = 8192.f;
}
CUSTOM_CVARD(Float, r_actorspriteshadowalpha, 0.5, CVAR_ARCHIVE | CVAR_GLOBALCONFIG, "maximum sprite shadow opacity, only effective with hardware renderers (0.0 = fully transparent, 1.0 = opaque)")
{
if (self < 0.f)
self = 0.f;
else if (self > 1.f)
self = 1.f;
}
CUSTOM_CVARD(Float, r_actorspriteshadowfadeheight, 0.0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG, "distance over which sprite shadows should fade, only effective with hardware renderers (0 = infinite)")
{
if (self < 0.f)
self = 0.f;
else if (self > 8192.f)
self = 8192.f;
}
int viewwindowx;
int viewwindowy;