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Slattz/Weather.cpp

Last active February 24, 2020 08:35
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[ACNL] Weather Stuff
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Weather.cpp
/*
Weather Values:
0: Sky completely clear
1: Few Clouds, but clear weather
2: Dark sky/clouds to signify rain is coming, clear weather
3: Sky completely filled with grey clouds, Light Rain
4: Black clouds, Heavy Rain w/ Thunder+Lightning
5: Sky completely filled with light grey clouds, Light Snow
6: Black clouds, Heavy Snow, looks kinda 'foggy'
7+: Invalid, Music doesn't play and weather is always clear
Cherry Blossoms and Confetti have no weather ids
*/
static const u8 predetermined_weather[52][24] =
{
{0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,0,1,1,1,1},
{1,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1},
{1,1,1,1,1,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,1,1,1},
{1,1,1,1,1,1,1,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
{2,2,2,1,1,1,1,1,1,1,1,1,2,2,1,1,1,1,1,1,1,1,1,1},
{2,2,2,2,1,1,2,2,2,1,1,2,2,2,2,2,2,1,1,1,1,2,2,2},
{2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,1,1,1,1,2,2,2,2,2},
{2,2,3,3,3,2,2,2,3,3,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{3,2,2,1,2,3,3,3,3,3,3,2,2,2,3,3,3,2,2,2,2,3,3,3},
{3,3,3,2,2,3,3,2,2,2,3,3,3,3,3,2,2,2,2,3,3,3,3,3},
{3,3,3,3,3,2,3,3,3,2,3,3,3,3,3,3,3,3,2,2,3,3,3,3},
{3,3,3,4,4,3,3,4,4,4,4,3,3,3,3,3,2,2,3,3,3,3,3,3},
{3,4,4,4,4,4,4,4,4,3,3,4,4,4,4,4,4,3,3,3,4,4,4,3},
{4,4,4,4,4,4,4,4,4,4,4,4,4,4,3,3,3,2,2,3,3,3,4,4},
{2,2,2,2,2,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,3},
{1,1,1,1,1,1,1,1,1,2,2,3,3,2,2,2,2,2,2,2,2,2,2,2},
{0,0,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2},
{3,3,3,2,2,2,2,2,2,1,1,1,1,1,1,1,0,0,0,1,1,1,1,2},
{3,2,2,2,2,2,3,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{2,2,3,2,2,2,1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1,1,0},
{1,0,0,0,0,0,1,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{0,0,0,0,1,1,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,1,1,4,2,1,0,0,0,0,0,0,0,0,0,1,1,0},
{1,1,0,0,0,1,1,1,4,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{2,2,1,2,2,2,3,3,3,4,4,3,3,3,3,3,3,3,3,3,3,3,3,3},
{2,2,2,2,3,3,3,2,2,2,3,3,3,3,3,2,3,3,3,3,3,3,2,2},
{2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,3},
{3,3,2,2,2,3,3,2,2,2,1,1,2,2,2,2,2,2,2,2,2,2,2,2},
{3,3,3,3,3,3,3,3,3,2,2,2,2,2,2,2,1,1,2,2,2,2,2,2},
{4,4,3,3,3,2,2,3,2,2,2,2,2,2,2,2,2,2,1,1,2,2,2,2},
{0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,0,1,1,1,1},
{1,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1},
{2,2,2,2,1,1,2,2,2,1,1,2,2,2,2,2,2,1,1,1,1,2,2,2},
{2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,1,1,1,1,2,2,2,2,2},
{2,2,3,3,3,2,2,2,3,3,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{1,1,1,1,1,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,1,1,1},
{1,1,1,1,1,1,1,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,1,1,1,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,1,1,1},
{1,1,1,1,1,1,1,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1},
{2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
};
//off_CurrentTime: pointer for the game's current time. 0xAD56B0 (EUR 1.5)
u8 GetCurrentWeather(u32 off_CurrentTime) {
/* This is current weather used by the game in the going to/coming from island 'cutscenes'. Uses normal weather values. May be used for other things too. It is usually 0x7 except where it's used.*/
static const u32 off_WeatherForIslandCutscene = 0x95DFB0; //EUR 1.5
u8 weathervalue;
u8 savevalue;
u8 islandCutsceneWeather;
u8 room = GetRoomID();
if (room == 0x5D || room == 0x99 || room == 0x9B) { //if Train, GardenManualImport, or GardenPlusUpdate
return 0; //Clear weather
}
islandCutsceneWeather = *(u8 *)off_WeatherForIslandCutscene;
if (islandCutsceneWeather != 7) //If it's not the Invalid ID
return islandCutsceneWeather;
room = GetRoomID();
if(CheckRoomID(0x20000, room)) //Checks if room >= 0x67 && room <= 0x8D; All Island room ids
savevalue = GetIslandWeatherByte(); //Haven't checked what function does, just assumption. Not Re'd
else savevalue = GetWeatherByteFromSave(); //Gets weather from save (and other places too?). Not Re'd, has been step throuh
weathervalue = *(u8 *)off_WeatherForIslandCutscene;
if (weathervalue == 7)
{
u8 hour = *(u8 *)(off_CurrentTime+7); //Get hour from u64 time value
hour-=6;
if (hour<0) //Checks if current time is between 12am and 5am.
hour+=24; //If so, add 24 hrs
if (savevalue < 52 && hour < 24) { //Checks: 1) weathervalue won't cause read from OOB in array, 2) hour is actually an hour in the day
weathervalue = predetermined_weather[savevalue][hour];
}
}
room = GetRoomID();
if(CheckRoomID(0x20000, room)) //Checks if room >= 0x67 && room <= 0x8D; All Island room ids
return weathervalue;
/* This isn't a mistake, game checks twice ¯\_(ツ)_/¯ */
room = GetRoomID();
if(CheckRoomID(0x20000, room)) //Checks if room >= 0x67 && room <= 0x8D; All Island room ids
return weathervalue;
if (GetSeason(8) == 1) { //Checking if season is winter assumably. Not Re'd
if (weathervalue == 3)
weathervalue = 5; //Changes light rain to light snow
else if (weathervalue == 4)
weathervalue = 6; //Changes heavy rain to heavy snow
}
return weathervalue;
}
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