diff options
Diffstat (limited to 'src/StardewModdingAPI/Utilities/SDate.cs')
| -rw-r--r-- | src/StardewModdingAPI/Utilities/SDate.cs | 180 |
1 files changed, 56 insertions, 124 deletions
diff --git a/src/StardewModdingAPI/Utilities/SDate.cs b/src/StardewModdingAPI/Utilities/SDate.cs index fdeffe80..5f7ff030 100644 --- a/src/StardewModdingAPI/Utilities/SDate.cs +++ b/src/StardewModdingAPI/Utilities/SDate.cs @@ -13,6 +13,9 @@ namespace StardewModdingAPI.Utilities /// <summary>The internal season names in order.</summary> private readonly string[] Seasons = { "spring", "summer", "fall", "winter" }; + /// <summary>The number of seasons in a year.</summary> + private int SeasonsInYear => this.Seasons.Length; + /// <summary>The number of days in a season.</summary> private readonly int DaysInSeason = 28; @@ -77,10 +80,8 @@ namespace StardewModdingAPI.Utilities // handle season transition if (day > this.DaysInSeason || day < 1) { - // get current season index - int curSeasonIndex = Array.IndexOf(this.Seasons, this.Season); - if (curSeasonIndex == -1) - throw new InvalidOperationException($"The current season '{this.Season}' wasn't recognised."); + // get season index + int curSeasonIndex = this.GetSeasonIndex(); // get season offset int seasonOffset = day / this.DaysInSeason; @@ -94,7 +95,7 @@ namespace StardewModdingAPI.Utilities } // validate - if(year < 1) + if (year < 1) throw new ArithmeticException($"Adding {offset} days to {this} would result in invalid date {day:00} {season} {year}."); // return new date @@ -116,157 +117,88 @@ namespace StardewModdingAPI.Utilities /********* ** Operator methods *********/ - - /// <summary> - /// Equality operator. Tests the date being equal to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> + /// <summary>Get whether one date is equal to another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> /// <returns>The equality of the dates</returns> - public static bool operator ==(SDate s1, SDate s2) + public static bool operator ==(SDate date, SDate other) { - if (s1.Day == s2.Day && s1.Year == s2.Year && s1.Season == s2.Season) - return true; - else - return false; + return date?.GetHashCode() == other?.GetHashCode(); } - /// <summary> - /// Inequality operator. Tests the date being not equal to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> - /// <returns>The inequality of the dates</returns> - public static bool operator !=(SDate s1, SDate s2) + /// <summary>Get whether one date is not equal to another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> + public static bool operator !=(SDate date, SDate other) { - if (s1.Day == s2.Day && s1.Year == s2.Year && s1.Season == s2.Season) - return false; - else - return true; + return date?.GetHashCode() != other?.GetHashCode(); } - /// <summary> - /// Less than operator. Tests the date being less than to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> - /// <returns>If the dates are less than</returns> - public static bool operator >(SDate s1, SDate s2) + /// <summary>Get whether one date is more than another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> + public static bool operator >(SDate date, SDate other) { - if (s1.Year > s2.Year) - return true; - else if (s1.Year == s2.Year) - { - if (s1.Season == "winter" && s2.Season != "winter") - return true; - else if (s1.Season == s2.Season && s1.Day > s2.Day) - return true; - if (s1.Season == "fall" && (s2.Season == "summer" || s2.Season == "spring")) - return true; - if (s1.Season == "summer" && s2.Season == "spring") - return true; - } - - return false; + return date?.GetHashCode() > other?.GetHashCode(); } - /// <summary> - /// Less or equal than operator. Tests the date being less than or equal to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> - /// <returns>If the dates are less than or equal than</returns> - public static bool operator >=(SDate s1, SDate s2) + /// <summary>Get whether one date is more than or equal to another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> + public static bool operator >=(SDate date, SDate other) { - if (s1.Year > s2.Year) - return true; - else if (s1.Year == s2.Year) - { - if (s1.Season == "winter" && s2.Season != "winter") - return true; - else if (s1.Season == s2.Season && s1.Day >= s2.Day) - return true; - if (s1.Season == "fall" && (s2.Season == "summer" || s2.Season == "spring")) - return true; - if (s1.Season == "summer" && s2.Season == "spring") - return true; - } - - return false; + return date?.GetHashCode() >= other?.GetHashCode(); } - /// <summary> - /// Greater or equal than operator. Tests the date being greater than or equal to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> - /// <returns>If the dates are greater than or equal than</returns> - public static bool operator <=(SDate s1, SDate s2) + /// <summary>Get whether one date is less than or equal to another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> + public static bool operator <=(SDate date, SDate other) { - if (s1.Year < s2.Year) - return true; - else if (s1.Year == s2.Year) - { - if (s1.Season == s2.Season && s1.Day <= s2.Day) - return true; - else if (s1.Season == "spring" && s2.Season != "spring") - return true; - if (s1.Season == "summer" && (s2.Season == "fall" || s2.Season == "winter")) - return true; - if (s1.Season == "fall" && s2.Season == "winter") - return true; - } - - return false; + return date?.GetHashCode() <= other?.GetHashCode(); } - /// <summary> - /// Greater than operator. Tests the date being greater than to each other - /// </summary> - /// <param name="s1">The first date being compared</param> - /// <param name="s2">The second date being compared</param> - /// <returns>If the dates are greater than</returns> - public static bool operator <(SDate s1, SDate s2) + /// <summary>Get whether one date is less than another.</summary> + /// <param name="date">The base date to compare.</param> + /// <param name="other">The other date to compare.</param> + public static bool operator <(SDate date, SDate other) { - if (s1.Year < s2.Year) - return true; - else if (s1.Year == s2.Year) - { - if (s1.Season == s2.Season && s1.Day < s2.Day) - return true; - else if (s1.Season == "spring" && s2.Season != "spring") - return true; - if (s1.Season == "summer" && (s2.Season == "fall" || s2.Season == "winter")) - return true; - if (s1.Season == "fall" && s2.Season == "winter") - return true; - } - - return false; + return date?.GetHashCode() < other?.GetHashCode(); } - /// <summary> - /// Overrides the equals function. - /// </summary> + /// <summary>Overrides the equals function.</summary> /// <param name="obj">Object being compared.</param> /// <returns>The equalaity of the object.</returns> public override bool Equals(object obj) { - return base.Equals(obj); + return obj is SDate other && this == other; } - /// <summary> - /// This returns the hashcode of the object - /// </summary> - /// <returns>The hashcode of the object.</returns> + /// <summary>Get a hash code which uniquely identifies a date.</summary> public override int GetHashCode() { - return base.GetHashCode(); + // return the number of days since 01 spring Y1 + int yearIndex = this.Year - 1; + return + yearIndex * this.DaysInSeason * this.SeasonsInYear + + this.GetSeasonIndex() * this.DaysInSeason + + this.Day; } + /********* ** Private methods *********/ + /// <summary>Get the current season index.</summary> + /// <exception cref="InvalidOperationException">The current season wasn't recognised.</exception> + private int GetSeasonIndex() + { + int index = Array.IndexOf(this.Seasons, this.Season); + if (index == -1) + throw new InvalidOperationException($"The current season '{this.Season}' wasn't recognised."); + return index; + } + /// <summary>Get the real index in an array which should be treated as a two-way loop.</summary> /// <param name="index">The index in the looped array.</param> /// <param name="length">The number of elements in the array.</param> |