package mods.betterfoliage.mixin;

import mods.betterfoliage.Hooks;
import net.minecraft.block.AbstractBlock;
import net.minecraft.block.Block;
import net.minecraft.block.BlockState;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.BlockView;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;

/**
 * Mixin to override the result of {@link BlockState}.getAmbientOcclusionLightValue().
 *
 * Needed to avoid excessive darkening of Round Logs at the corners, now that they are not full blocks.
 */
@Mixin(AbstractBlock.AbstractBlockState.class)
@SuppressWarnings({"deprecation"})
public class MixinBlockState {
    private static final String callFrom = "Lnet/minecraft/block/AbstractBlock$AbstractBlockState;getAmbientOcclusionLightLevel(Lnet/minecraft/world/BlockView;Lnet/minecraft/util/math/BlockPos;)F";
    // why is the INVOKEVIRTUAL target class Block in the bytecode, not AbstractBlock?
    private static final String callTo = "Lnet/minecraft/block/Block;getAmbientOcclusionLightLevel(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/BlockView;Lnet/minecraft/util/math/BlockPos;)F";

    @Redirect(method = callFrom, at = @At(value = "INVOKE", target = callTo))
    float getAmbientOcclusionValue(Block block, BlockState state, BlockView reader, BlockPos pos) {
        return Hooks.getAmbientOcclusionLightValueOverride(block.getAmbientOcclusionLightLevel(state, reader, pos), state);
    }
}