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Rework use_texture_alpha to provide three opaque/clip/blend modes

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The change that turns nodeboxes and meshes opaque when possible is kept,
as is the compatibility code that warns modders to adjust their nodedefs.
This commit is contained in:
sfan5 2021-01-17 01:56:50 +01:00
parent edd8c3c664
commit 83229921e5
8 changed files with 164 additions and 66 deletions
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32
src/script/common/c_content.cpp
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@ -618,25 +618,39 @@ void read_content_features(lua_State *L, ContentFeatures &f, int index)
}
lua_pop(L, 1);
/* alpha & use_texture_alpha */
// This is a bit complicated due to compatibility
f.setDefaultAlphaMode();
warn_if_field_exists(L, index, "alpha",
"Obsolete, only limited compatibility provided");
"Obsolete, only limited compatibility provided; "
"replaced by \"use_texture_alpha\"");
if (getintfield_default(L, index, "alpha", 255) != 255)
f.alpha = 0;
f.alpha = ALPHAMODE_BLEND;
bool usealpha = getboolfield_default(L, index,
"use_texture_alpha", false);
if (usealpha)
f.alpha = 0;
lua_getfield(L, index, "use_texture_alpha");
if (lua_isboolean(L, -1)) {
warn_if_field_exists(L, index, "use_texture_alpha",
"Boolean values are deprecated; use the new choices");
if (lua_toboolean(L, -1))
f.alpha = (f.drawtype == NDT_NORMAL) ? ALPHAMODE_CLIP : ALPHAMODE_BLEND;
} else if (check_field_or_nil(L, -1, LUA_TSTRING, "use_texture_alpha")) {
int result = f.alpha;
string_to_enum(ScriptApiNode::es_TextureAlphaMode, result,
std::string(lua_tostring(L, -1)));
f.alpha = static_cast<enum AlphaMode>(result);
}
lua_pop(L, 1);
/* Other stuff */
// Read node color.
lua_getfield(L, index, "color");
read_color(L, -1, &f.color);
lua_pop(L, 1);
getstringfield(L, index, "palette", f.palette_name);
/* Other stuff */
lua_getfield(L, index, "post_effect_color");
read_color(L, -1, &f.post_effect_color);
lua_pop(L, 1);