ref: a1e711b80dbd652cdf3b89811f7539d93782b0b5
dir: /engine/battle/move_effects/sunny_day.asm/
BattleCommand_StartSun: ld a, WEATHER_SUN ld [wBattleWeather], a ld a, 5 ld [wWeatherCount], a call AnimateCurrentMove ld hl, SunGotBrightText jp StdBattleTextbox