fix: mark song as unsaved when changing tempo

Affects the following instances:

- making tempo compatible with schematics/data packs via Compatibility window
- clicking 'OK' in the tempo tapper window
- selecting a tempo option from the tempo box context menu
- confirming a valid change typed to the tempo box

Fixes #433

Author: Bentroen

scripts/draw_window_minecraft/draw_window_minecraft.gml

@@ -147,10 +147,10 @@ function draw_window_minecraft() {
 		    else draw_text_dynamic(x1 + 45, yy + 16, "目前速度为每秒 " + string(tempo) + " 红石刻。")
 		    if (draw_button2(x1 + 45, yy + 34, 140, condstr(language != 1, "Fix tempo for schematic", "针对 Schematic 调整速度"), 0, 1)) {
 		        var otempo = tempo
-		        if (otempo > 10) tempo = 10
-		        if (otempo < 10) tempo = 10
-		        if (otempo < 7.5) tempo = 5
-		        if (otempo < 3.75) tempo = 2.5
+		        if (otempo > 10) tempo = 10 changed = 1
+		        if (otempo < 10) tempo = 10 changed = 1
+		        if (otempo < 7.5) tempo = 5 changed = 1
+		        if (otempo < 3.75) tempo = 2.5 changed = 1
 		    }
 		}
 		draw_theme_color()
@@ -315,16 +315,16 @@ function draw_window_minecraft() {
 			if (draw_button2(x1 + 45, yy + 50, 180, condstr(language != 1, "Optimize tempo for data pack", "针对数据包调整速度"), 0, 1)) {
 			    var otempo
 				otempo = tempo
-				if (otempo >= 15) tempo = 20
-		        if (otempo < 15) tempo = 10
-		        if (otempo < 7.5) tempo = 5
-		        if (otempo < 4.5) tempo = 4
-		        if (otempo < 3.25) tempo = 2.5
-				if (otempo < 2.25) tempo = 2
-				if (otempo < 1.625) tempo = 1.25
-				if (otempo < 1.125) tempo = 1
-				if (otempo < 0.75) tempo = 0.5
-				if (otempo < 0.375) tempo = 0.25
+				if (otempo >= 15) tempo = 20 changed = 1
+		        if (otempo < 15) tempo = 10 changed = 1
+		        if (otempo < 7.5) tempo = 5 changed = 1
+		        if (otempo < 4.5) tempo = 4 changed = 1
+		        if (otempo < 3.25) tempo = 2.5 changed = 1
+				if (otempo < 2.25) tempo = 2 changed = 1
+				if (otempo < 1.625) tempo = 1.25 changed = 1
+				if (otempo < 1.125) tempo = 1 changed = 1
+				if (otempo < 0.75) tempo = 0.5 changed = 1
+				if (otempo < 0.375) tempo = 0.25 changed = 1
 		    }
 		}
 		draw_theme_color()

scripts/draw_window_set_tempo/draw_window_set_tempo.gml

@@ -19,6 +19,8 @@ function draw_window_set_tempo() {
 		settempo = mouse_rectangle(xx, 57, w, 22)
 	}
 
+	var otempo = tempo;
+	
 	// Set tempo and close
 	if ((mouse_check_button_released(mb_left) && !settempo && !mouse_rectangle(xx, 57, w, 22)) || keyboard_check_pressed(vk_enter)) {
 		try {
@@ -33,6 +35,9 @@ function draw_window_set_tempo() {
 			}
 			tempo = median(0.25, tempo, 60)
 		}
+		if (tempo != otempo) {
+			changed = 1
+		}
 		settempo = 0
 		text_focus = -1
 		window = 0

scripts/draw_window_tempo_tapper/draw_window_tempo_tapper.gml

@@ -52,6 +52,7 @@ function draw_window_tempo_tapper() {
 	if (draw_button2(x1 + 10, y1 + 98, 60, condstr(language != 1, "OK", "确认")) && (windowopen = 1 || theme != 3)) {
 		try {
 			tempo = (ctempo * (1 + tapdouble)) / 15
+			changed = 1
 			taptempo = 0
 			tapping = 0
 			ltime = 0

scripts/menu_click/menu_click.gml

@@ -336,14 +336,14 @@ function menu_click(argument0) {
 		case "tempo": {
 			if (sel = 0) use_bpm = false
 			else if (sel = 1) use_bpm = true
-			else if (sel = 2) tempo = 10
-			else if (sel = 3) tempo = 12
-			else if (sel = 4) tempo = 14
-			else if (sel = 5) tempo = 16
-			else if (sel = 6) tempo = 18
-			else if (sel = 7) tempo = 20
-			else if (sel = 8) tempo = 30
-			else if (sel = 9) tempo = 60
+			else if (sel = 2) { tempo = 10 changed = 1 }
+			else if (sel = 3) { tempo = 12 changed = 1 }
+			else if (sel = 4) { tempo = 14 changed = 1 }
+			else if (sel = 5) { tempo = 16 changed = 1 }
+			else if (sel = 6) { tempo = 18 changed = 1 }
+			else if (sel = 7) { tempo = 20 changed = 1 }
+			else if (sel = 8) { tempo = 30 changed = 1 }
+			else if (sel = 9) { tempo = 60 changed = 1 }
 			else if (sel = 10) window = w_tempotapper
 			break
 		}