Merge pull request #305 from PikalaxALT/field_weather

Field weather

1 files changed, 105 insertions, 0 deletions

diff --git a/src/field_weather_util.c b/src/field_weather_util.c
new file mode 100644
index 000000000..459071736
--- /dev/null
+++ b/src/field_weather_util.c
@@ -0,0 +1,105 @@
+#include "global.h"
+#include "field_weather.h"
+#include "overworld.h"
+#include "constants/weather.h"
+
+static u8 TranslateWeatherNum(u8 weather);
+static void UpdateRainCounter(u8 newWeather, u8 oldWeather);
+
+void SetSav1Weather(u32 weather)
+{
+    u8 oldWeather = gSaveBlock1Ptr->weather;
+    gSaveBlock1Ptr->weather = TranslateWeatherNum(weather);
+    UpdateRainCounter(gSaveBlock1Ptr->weather, oldWeather);
+}
+
+u8 GetSav1Weather(void)
+{
+    return gSaveBlock1Ptr->weather;
+}
+
+void SetSav1WeatherFromCurrMapHeader(void)
+{
+    u8 oldWeather = gSaveBlock1Ptr->weather;
+    gSaveBlock1Ptr->weather = TranslateWeatherNum(gMapHeader.weather);
+    UpdateRainCounter(gSaveBlock1Ptr->weather, oldWeather);
+}
+
+void SetWeather(u32 weather)
+{
+    SetSav1Weather(weather);
+    SetNextWeather(GetSav1Weather());
+}
+
+void SetWeather_Unused(u32 weather)
+{
+    SetSav1Weather(weather);
+    SetCurrentAndNextWeather(GetSav1Weather());
+}
+
+void DoCurrentWeather(void)
+{
+    u8 weather = GetSav1Weather();
+
+    SetNextWeather(weather);
+}
+
+void ResumePausedWeather(void)
+{
+    u8 weather = GetSav1Weather();
+
+    SetCurrentAndNextWeather(weather);
+}
+
+static const u8 sWeatherCycleRoute119[] = {
+    WEATHER_SUNNY,
+    WEATHER_RAIN,
+    WEATHER_RAIN_THUNDERSTORM,
+    WEATHER_RAIN,
+};
+
+static const u8 sWeatherCycleRoute123[] = {
+    WEATHER_SUNNY,
+    WEATHER_SUNNY,
+    WEATHER_RAIN,
+    WEATHER_SUNNY,
+};
+
+static u8 TranslateWeatherNum(u8 weather)
+{
+    switch (weather)
+    {
+    case WEATHER_NONE:               return WEATHER_NONE;
+    case WEATHER_SUNNY_CLOUDS:       return WEATHER_SUNNY_CLOUDS;
+    case WEATHER_SUNNY:              return WEATHER_SUNNY;
+    case WEATHER_RAIN:               return WEATHER_RAIN;
+    case WEATHER_SNOW:               return WEATHER_SNOW;
+    case WEATHER_RAIN_THUNDERSTORM:  return WEATHER_RAIN_THUNDERSTORM;
+    case WEATHER_FOG_HORIZONTAL:     return WEATHER_FOG_HORIZONTAL;
+    case WEATHER_VOLCANIC_ASH:       return WEATHER_VOLCANIC_ASH;
+    case WEATHER_SANDSTORM:          return WEATHER_SANDSTORM;
+    case WEATHER_FOG_DIAGONAL:       return WEATHER_FOG_DIAGONAL;
+    case WEATHER_UNDERWATER:         return WEATHER_UNDERWATER;
+    case WEATHER_SHADE:              return WEATHER_SHADE;
+    case WEATHER_DROUGHT:            return WEATHER_DROUGHT;
+    case WEATHER_DOWNPOUR:           return WEATHER_DOWNPOUR;
+    case WEATHER_UNDERWATER_BUBBLES: return WEATHER_UNDERWATER_BUBBLES;
+    case WEATHER_ROUTE119_CYCLE:     return sWeatherCycleRoute119[gSaveBlock1Ptr->weatherCycleStage];
+    case WEATHER_ROUTE123_CYCLE:     return sWeatherCycleRoute123[gSaveBlock1Ptr->weatherCycleStage];
+    default:                         return WEATHER_NONE;
+    }
+}
+
+void UpdateWeatherPerDay(u16 increment)
+{
+    u16 weatherStage = gSaveBlock1Ptr->weatherCycleStage + increment;
+    weatherStage %= 4;
+    gSaveBlock1Ptr->weatherCycleStage = weatherStage;
+}
+
+static void UpdateRainCounter(u8 newWeather, u8 oldWeather)
+{
+    if (newWeather != oldWeather
+        && (newWeather == WEATHER_RAIN || newWeather == WEATHER_RAIN_THUNDERSTORM))
+        IncrementGameStat(GAME_STAT_GOT_RAINED_ON);
+}