54 lines
1.9 KiB
C#
54 lines
1.9 KiB
C#
using System;
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using System.Linq.Expressions;
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using System.Reflection;
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using Vintagestory.API.Common;
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namespace OrekiWoofsBees.Common;
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public static class CompatibilityUtil
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{
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private const string fruiting_bush_behavior_name = "BEBehaviorFruitingBush";
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private const string b_state_field_name = "BState";
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private const string growthstate_property_name = "Growthstate";
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private const int flowering_growth_state_value = 2;
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private static System.Func<BlockEntityBehavior, bool>? is_fruiting_bush_flowering_check;
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public static bool IsFruitingBushFlowering(this BlockEntityBehavior behavior)
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{
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var behaviorType = behavior.GetType();
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if (!IsFruitingBushBehaviorType(behaviorType))
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return false;
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var check = is_fruiting_bush_flowering_check ??= BuildIsFruitingBushFloweringCheck(behaviorType);
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return check(behavior);
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}
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private static bool IsFruitingBushBehaviorType(Type behaviorType)
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{
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for (var type = behaviorType; type is not null; type = type.BaseType)
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{
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if (type.Name == fruiting_bush_behavior_name)
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return true;
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}
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return false;
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}
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private static System.Func<BlockEntityBehavior, bool> BuildIsFruitingBushFloweringCheck(Type behaviorType)
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{
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var bStateField = behaviorType.GetField(b_state_field_name, BindingFlags.Instance | BindingFlags.Public)!;
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var growthStateProperty = bStateField.FieldType.GetProperty(growthstate_property_name, BindingFlags.Instance | BindingFlags.Public)!;
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var behaviorParameter = Expression.Parameter(typeof(BlockEntityBehavior), "behavior");
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var typedBehavior = Expression.Convert(behaviorParameter, behaviorType);
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var bState = Expression.Field(typedBehavior, bStateField);
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var growthState = Expression.Property(bState, growthStateProperty);
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var comparison = Expression.Equal(
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Expression.Convert(growthState, typeof(int)),
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Expression.Constant(flowering_growth_state_value));
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return Expression.Lambda<System.Func<BlockEntityBehavior, bool>>(comparison, behaviorParameter).Compile();
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}
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} |