world: implement Manager::isRaining (#214)

* world: implement Manager::isRaining

Implement the position-based rain check for Rain, HeavyRain, ThunderRain,
and BlueskyRain. Declare the climate weather lookup dependency and name
both functions in the function table.

The rain check matches the original function at 0x71010f33a4.

* world: keep rainfall queries const

Restore const on Manager::isRaining and make its climate weather helper
const. Both queries only read Manager state. Update their function-table
symbols; the rain check still matches the original.

data/uking_functions.csv

@@ -90131,13 +90131,13 @@ Address,Quality,Size,Name
 0x00000071010f2f24,O,000008,_ZNK4ksys5world7Manager17getCurrentClimateEv
 0x00000071010f2f2c,O,000008,_ZNK4ksys5world7Manager14getPrevClimateEv
 0x00000071010f2f34,O,000008,_ZNK4ksys5world7Manager28getClimateTransitionProgressEv
-0x00000071010f2f3c,U,000972,WorldMgr::someWeatherStuff_0
+0x00000071010f2f3c,U,000972,_ZNK4ksys5world7Manager14getWeatherTypeENS0_7ClimateE
 0x00000071010f3308,U,000044,WorldMgr::x_14
 0x00000071010f3334,O,000032,_ZNK4ksys5world7Manager16isDayLockBlueSkyENS0_7ClimateE
 0x00000071010f3354,O,000032,_ZNK4ksys5world7Manager18isNightLockBlueSkyENS0_7ClimateE
 0x00000071010f3374,U,000008,WorldMgr::__auto13
 0x00000071010f337c,U,000040,_ZN4ksys5world7Manager14sub_71010F337CERKN4sead7Vector3IfEE
-0x00000071010f33a4,U,000084,WorldMgr::isRaining
+0x00000071010f33a4,O,000084,_ZNK4ksys5world7Manager9isRainingERKN4sead7Vector3IfEE
 0x00000071010f33f8,O,000452,_ZNK4ksys5world7Manager11calcTempDayEf
 0x00000071010f35bc,O,000452,_ZNK4ksys5world7Manager13calcTempNightEf
 0x00000071010f3780,O,000068,_ZNK4ksys5world7Manager14getMoistureMaxEv

src/KingSystem/World/worldManager.cpp

@@ -136,6 +136,19 @@ bool Manager::isNightLockBlueSky(Climate climate) const {
     return mWorldInfo.mClimates[int(climate)].NightLockBlueSky.ref();
 }
 
+bool Manager::isRaining(const sead::Vector3f& pos) const {
+    const Climate climate = getClimate(pos);
+    switch (getWeatherType(climate)) {
+    case WeatherType::Rain:
+    case WeatherType::HeavyRain:
+    case WeatherType::ThunderRain:
+    case WeatherType::BlueskyRain:
+        return true;
+    default:
+        return false;
+    }
+}
+
 float Manager::calcTempDay(float height) const {
     float normal_temp = 23.0f;
 

src/KingSystem/World/worldManager.h

@@ -221,6 +221,8 @@ private:
         Unloaded,
     };
 
+    WeatherType getWeatherType(Climate climate) const;
+
     void overrideWindSpeed(float* wind_speed) const;
 
     void calcManagers(sead::WorkerMgr* worker_mgr);