ref: e4b41fad4fd3787ca2e61adb5377ba8f68fca7ef
dir: /engine/battle/move_effects/sunny_day.asm/
BattleCommand_StartSun: ; 37c07 ; startsun ld a, WEATHER_SUN ld [wBattleWeather], a ld a, 5 ld [wWeatherCount], a call AnimateCurrentMove ld hl, SunGotBrightText jp StdBattleTextBox ; 37c1a