新BGM：empty（用于节日主题，by ERM）

Zframework/theme.lua

@@ -31,13 +31,12 @@ function THEME.calculate(Y,M,D)
 		M=="04"and D=="01"and
 		"fool"or
 
-		--Z day (1) (Feb./Mar./Apr. 26)
-		math.abs(M-3)<=1 and D=="26"and
-		"zday1"or
-
-		--Z day (2) (May./June 26)
-		math.abs(M-5.5)<=1 and D=="26"and
-		"zday2"or
+		--Z day (Feb./Mar./Apr./May./June. 26)
+		D=="26"and(
+			M=="1"or M=="2"and"zday1"or
+			M=="3"or M=="4"and"zday2"or
+			M=="5"or M=="6"and"zday3"
+		)or
 
 		"classic"
 end
@@ -60,8 +59,11 @@ function THEME.set(theme)
 		LOG.print(" ★☆☆★",COLOR.red)
 	elseif theme=="zday1"then
 		BG.setDefault("lanterns")
-		BGM.setDefault("overzero")
+		BGM.setDefault("empty")
 	elseif theme=="zday2"then
+		BG.setDefault("lanterns")
+		BGM.setDefault("overzero")
+	elseif theme=="zday3"then
 		BG.setDefault("lanterns")
 		BGM.setDefault("vacuum")
 	elseif theme=="fool"then

parts/language/lang_en.lua

@@ -185,7 +185,7 @@ return{
 		"",
 		"Program: MrZ, Particle_G, [FinnTenzor]",
 		"Art: MrZ, ScF, [Gnyar, 旋律星萤, T0722]",
-		"Music: MrZ, [T0722]",
+		"Music: MrZ, ERM, [T0722]",
 		"Voice & Sound: Miya, Naki, MrZ",
 		"Performance: 模电, HBM",
 		"Translate: User670, MattMayuga, Mizu, Mr.Faq, ScF",

parts/language/lang_fr.lua

@@ -162,7 +162,7 @@ return{
 		"",
 		"Programme : MrZ, Particle_G, [FinnTenzor]",
 		"Art : MrZ, ScF, [Gnyar, 旋律星萤, T0722]",
-		"Musique : MrZ, [T0722]",
+		"Musique : MrZ, ERM, [T0722]",
 		"Voix & Sons: Miya, Naki, MrZ  Performance: 模电, HBM",
 		"Performance: 模电, HBM",
 		"Traduction: User670, MattMayuga, Mizu, Mr.Faq, ScF",

parts/language/lang_pt.lua

@@ -185,7 +185,7 @@ return{
 		"",
 		"Programa: MrZ, Particle_G, [FinnTenzor]",
 		"Art: MrZ, ScF, [Gnyar, 旋律星萤, T0722]",
-		"Music: MrZ, [T0722]",
+		"Music: MrZ, ERM, [T0722]",
 		"Voice & Sound: Miya, Naki, MrZ",
 		"Performance: 模电, HBM",
 		"Traduzir: User670, MattMayuga, Mizu, Mr.Faq, ScF",

parts/language/lang_sp.lua

@@ -163,7 +163,7 @@ return{
 		"",
 		"Programación: MrZ, Particle_G, [FinnTenzor]",
 		"Artistas: MrZ, ScF, [Gnyar, 旋律星萤, T0722]",
-		"Música: MrZ, [T0722]",
+		"Música: MrZ, ERM, [T0722]",
 		"Voces/Sonidos: Miya, Naki, MrZ  Performance: 模电, HBM",
 		"Performance: 模电, HBM",
 		"Traducción: User670, MattMayuga, Mizu, Mr.Faq, ScF",

parts/language/lang_zh.lua

@@ -185,7 +185,7 @@ return{
 		"",
 		"程序: MrZ, Particle_G, [FinnTenzor]",
 		"美术: MrZ, ScF, [Gnyar, 旋律星萤, T0722]",
-		"音乐: MrZ, [T0722]",
+		"音乐: MrZ, ERM, [T0722]",
 		"音效/语音: Miya, Naki, MrZ",
 		"演出: 模电, HBM",
 		"翻译: User670, MattMayuga, Mizu, Mr.Faq, ScF",

parts/scenes/app_cmd.lua

@@ -196,7 +196,7 @@ do--commands.help(arg)
 			details={
 				"Set background.",
 				"",
-				"Usage: setbg <classic|xmas|sprfes|zday1|zday2>",
+				"Usage: setbg <classic|xmas|sprfes|zday1/2/3>",
 			},
 		},
 		theme={
@@ -204,7 +204,7 @@ do--commands.help(arg)
 			details={
 				"Load a theme.",
 				"",
-				"Usage: theme <classic|xmas|sprfes|zday1|zday2>",
+				"Usage: theme <classic|xmas|sprfes|zday1/2/3>",
 			},
 		},
 		demo={