Add health rating value to health advisor

- Also add "Disease surveillance" subtitle to make clearer that city_health (which is global) and sickness_level (which fetches the house with the higher sickness value in the city) are somewhat independent under some circumstances.
- Thanks to Awatibala/dvincent56 for the proofreading.

src/translation/english.c

@@ -789,6 +789,8 @@ static translation_string all_strings[] = {
     {TR_BUILDING_HOUSE_DISEASE_DESC, "Pestilence has struck! Without adequate healthcare, residents dwelling here have died. This house is in quarantine while a doctor or surgeon decontaminates the area."},
     {TR_BUILDING_FUMIGATION_DESC, "The building is being cleansed of disease. The fumigation should last a few days."},
     {TR_OVERLAY_SICKNESS, "Sickness"},
+    {TR_ADVISOR_HEALTH_RATING, "Rating:"},
+    {TR_ADVISOR_HEALTH_SURVEILLANCE, "Disease surveillance:"},
     {TR_ADVISOR_SICKNESS_LEVEL_LOW, "Disease is a rare occurrence in the city. The high standard of healthcare provided to the vast majority of residents effectively prevents epidemics spreading here."},
     {TR_ADVISOR_SICKNESS_LEVEL_MEDIUM, "Some infectious diseases have appeared in areas of the city with a lacking hygiene, but the situation is under control. A sufficiently high level of healthcare will mitigate the impact of epidemics in the city."},
     {TR_ADVISOR_SICKNESS_LEVEL_HIGH, "Infectious diseases spread in areas of the city having a poor level of hygiene. If the situation is not remedied soon, some buildings may be quarantined. Greater access to healthcare would effectively prevent epidemics from breaking out."},

src/translation/translation.h

@@ -784,6 +784,8 @@ typedef enum {
     TR_BUILDING_HOUSE_DISEASE_DESC,
     TR_BUILDING_FUMIGATION_DESC,
     TR_OVERLAY_SICKNESS,
+    TR_ADVISOR_HEALTH_RATING,
+    TR_ADVISOR_HEALTH_SURVEILLANCE,
     TR_ADVISOR_SICKNESS_LEVEL_LOW,
     TR_ADVISOR_SICKNESS_LEVEL_MEDIUM,
     TR_ADVISOR_SICKNESS_LEVEL_HIGH,

src/window/advisor/health.c

@@ -62,6 +62,11 @@ static int draw_background(void)
     int sickness_level = city_health_get_global_sickness_level();
 
     lang_text_draw(56, 0, 60, 12, FONT_LARGE_BLACK);
+
+    int x_offset = lang_text_get_width(56, 0, FONT_LARGE_BLACK);    
+    x_offset += lang_text_draw(CUSTOM_TRANSLATION, TR_ADVISOR_HEALTH_RATING, 60 + x_offset, 25, FONT_NORMAL_BLACK);
+    text_draw_number(city_health(), 0, "", 60 + x_offset, 25, FONT_NORMAL_BLACK, 0);
+
     if (city_population() >= 200) {
         lang_text_draw_multiline(56, city_health() / 10 + 16, 60, 46, 512, FONT_NORMAL_BLACK);
     } else {
@@ -89,6 +94,8 @@ static int draw_background(void)
 
     int text_height = lang_text_draw_multiline(56, 7 + get_health_advice(), 60, 210, 512, FONT_NORMAL_BLACK);
 
+    lang_text_draw(CUSTOM_TRANSLATION, TR_ADVISOR_HEALTH_SURVEILLANCE, 60, 230 + text_height, FONT_NORMAL_BLACK);
+    text_height += 17;
     text_draw_multiline(translation_for(TR_ADVISOR_SICKNESS_LEVEL_LOW + sickness_level),
         60, 230 + text_height, 512, FONT_NORMAL_BLACK, 0);