X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fscene.cpp;h=090f95be917884a1044239bb4046fc4d6726d613;hb=f3aa15a52accbc8184fdd617a3e14126cb6a3a20;hp=6eb86ac91e6f85e1cf45120cc82910aceb3a0374;hpb=67bcd1fb516072bf48e4ac140b057f74a31edba0;p=nageru

diff --git a/nageru/scene.cpp b/nageru/scene.cpp
index 6eb86ac..090f95b 100644
--- a/nageru/scene.cpp
+++ b/nageru/scene.cpp
@@ -366,16 +366,16 @@ Scene::get_chain(Theme *theme, lua_State *L, unsigned num, const InputState &inp
 		if (!block->alternatives.empty()) {
 			EffectBlueprint *blueprint = block->alternatives[block->currently_chosen_alternative];
 			for (const auto &key_and_tuple : blueprint->int_parameters) {
-				int_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
+				int_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
 			}
 			for (const auto &key_and_tuple : blueprint->float_parameters) {
-				float_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
+				float_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
 			}
 			for (const auto &key_and_tuple : blueprint->vec3_parameters) {
-				vec3_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
+				vec3_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
 			}
 			for (const auto &key_and_tuple : blueprint->vec4_parameters) {
-				vec4_to_set.emplace(make_pair(effect, key_and_tuple.first), key_and_tuple.second);
+				vec4_to_set[make_pair(effect, key_and_tuple.first)] = key_and_tuple.second;
 			}
 		}
 	}
@@ -491,17 +491,32 @@ int Block_display(lua_State* L)
 	return 0;
 }
 
-int Block_choose_alternative(lua_State* L)
+int Block_choose(lua_State* L)
 {
 	assert(lua_gettop(L) == 2);
 	Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
-	int alternative_idx = luaL_checknumber(L, 2);
+	int alternative_idx = -1;
+	if (lua_isnumber(L, 2)) {
+		alternative_idx = luaL_checknumber(L, 2);
+	} else if (lua_istable(L, 2)) {
+		// See if it's an Effect metatable (e.g. foo:choose(ResampleEffect))
+		lua_getfield(L, 2, "__effect_type_id");
+		if (lua_isnumber(L, -1)) {
+			EffectType effect_type = EffectType(luaL_checknumber(L, -1));
+			alternative_idx = find_index_of(block, effect_type);
+		}
+		lua_pop(L, 1);
+	}
+
+	if (alternative_idx == -1) {
+		luaL_error(L, "choose() called with something that was not an index or an effect type (e.g. ResampleEffect) that was part of the alternatives");
+	}
 
 	assert(alternative_idx >= 0);
 	assert(size_t(alternative_idx) < block->alternatives.size());
 	block->currently_chosen_alternative = alternative_idx;
 
-	return 0;
+	return wrap_lua_existing_object_nonowned<EffectBlueprint>(L, "EffectBlueprint", block->alternatives[alternative_idx]);
 }
 
 int Block_enable(lua_State *L)
@@ -522,11 +537,10 @@ int Block_disable(lua_State *L)
 	assert(lua_gettop(L) == 1);
 	Block *block = *(Block **)luaL_checkudata(L, 1, "Block");
 
-	if (block->alternatives.size() != 2 ||
-	    block->alternatives[1]->effect_type != IDENTITY_EFFECT) {
-		luaL_error(L, "disable() called on something that wasn't added with add_optional_effect()");
-	}
 	block->currently_chosen_alternative = find_index_of(block, IDENTITY_EFFECT);
+	if (block->currently_chosen_alternative == -1) {
+		luaL_error(L, "disable() called on something that didn't have an IdentityEffect fallback (try add_optional_effect())");
+	}
 	assert(block->currently_chosen_alternative != -1);
 	return 0;
 }