BloodMagic/src/main/java/WayofTime/bloodmagic/altar/BloodAltar.java

package WayofTime.bloodmagic.altar;

import WayofTime.bloodmagic.api.BlockStack;
import WayofTime.bloodmagic.api.altar.*;
import WayofTime.bloodmagic.block.BlockBloodRune;
import WayofTime.bloodmagic.block.BlockBloodStoneBrick;
import WayofTime.bloodmagic.block.BlockCrystal;
import WayofTime.bloodmagic.registry.ModBlocks;
import net.minecraft.block.BlockBeacon;
import net.minecraft.block.BlockGlowstone;
import net.minecraft.init.Blocks;
import net.minecraft.util.BlockPos;
import net.minecraft.world.World;

import java.util.List;

public class BloodAltar {

    static {
        EnumAltarTier.ONE.buildComponents();
        EnumAltarTier.TWO.buildComponents();
        EnumAltarTier.THREE.buildComponents();
        EnumAltarTier.FOUR.buildComponents();
        EnumAltarTier.FIVE.buildComponents();
        EnumAltarTier.SIX.buildComponents();
    }

    public static EnumAltarTier getAltarTier(World world, BlockPos pos) {
        for (int i = EnumAltarTier.MAXTIERS - 1; i >= 1; i--) {
            if (checkAltarIsValid(world, pos, i)) {
                return EnumAltarTier.values()[i];
            }
        }

        return EnumAltarTier.ONE;
    }

    public static boolean checkAltarIsValid(World world, BlockPos worldPos, int altarTier) {

        for (AltarComponent altarComponent : EnumAltarTier.values()[altarTier].getAltarComponents()) {

            BlockPos componentPos = worldPos.add(altarComponent.getOffset());
            BlockStack worldBlock = new BlockStack(world.getBlockState(componentPos).getBlock(), world.getBlockState(componentPos).getBlock().getMetaFromState(world.getBlockState(componentPos)));

            if (altarComponent.isBloodRune()) {
                if (!checkRune(altarComponent, worldBlock)) {
                    return false;
                }
            } else if (!altarComponent.isBloodRune()) {
                if (world.isAirBlock(componentPos)) return false;
                if (((altarComponent.getBlockStack().getBlock() != worldBlock.getBlock()) || (altarComponent.getBlockStack().getMeta() != worldBlock.getMeta()))) {
                    if (!checkSpecials(altarComponent, worldBlock)) {
                        return false;
                    }
                }
            }
        }

        return true;
    }

    public static AltarUpgrade getUpgrades(World world, BlockPos pos, EnumAltarTier altarTier) {
        if (world.isRemote) {
            return null;
        }

        AltarUpgrade upgrades = new AltarUpgrade();
        List<AltarComponent> list = altarTier.getAltarComponents();

        for (AltarComponent altarComponent : list) {
            BlockPos componentPos = pos.add(altarComponent.getOffset());

            if (altarComponent.isUpgradeSlot()) {
                BlockStack worldBlock = new BlockStack(world.getBlockState(componentPos).getBlock(), world.getBlockState(componentPos).getBlock().getMetaFromState(world.getBlockState(componentPos)));

                if (worldBlock.getBlock() instanceof BlockBloodRune) {
                    switch (((BlockBloodRune) worldBlock.getBlock()).getRuneEffect(worldBlock.getMeta())) {
                        case 1:
                            upgrades.addSpeed();
                            break;

                        case 2:
                            upgrades.addEfficiency();
                            break;

                        case 3:
                            upgrades.addSacrifice();
                            break;

                        case 4:
                            upgrades.addSelfSacrifice();
                            break;

                        case 5:
                            upgrades.addDisplacement();
                            break;

                        case 6:
                            upgrades.addCapacity();
                            break;

                        case 7:
                            upgrades.addBetterCapacity();
                            break;

                        case 8:
                            upgrades.addOrbCapacity();
                            break;

                        case 9:
                            upgrades.addAcceleration();
                            break;
                    }
                }
            }
        }

        return upgrades;
    }

    private static boolean checkRune(AltarComponent altarComponent, BlockStack blockStack) {
        if (altarComponent.getBlockStack().getBlock() == ModBlocks.bloodRune) {
            if (blockStack.getBlock() instanceof BlockBloodRune || (blockStack.getBlock() instanceof IAltarComponent && (((IAltarComponent) blockStack.getBlock()).getType(blockStack.getMeta()) == EnumAltarComponent.BLOODRUNE))) {
                return true;
            }
        }
        return false;
    }

    private static boolean checkSpecials(AltarComponent altarComponent, BlockStack blockStack) {
        if (altarComponent.getBlockStack().getBlock() == ModBlocks.bloodStoneBrick)
            if (blockStack.getBlock() instanceof BlockBloodStoneBrick || (blockStack.getBlock() instanceof IAltarComponent && (((IAltarComponent) blockStack.getBlock()).getType(blockStack.getMeta()) == EnumAltarComponent.BLOODSTONE)))
                return true;

        if (altarComponent.getBlockStack().getBlock() == ModBlocks.crystal)
            if (blockStack.getBlock() instanceof BlockCrystal || (blockStack.getBlock() instanceof IAltarComponent && (((IAltarComponent) blockStack.getBlock()).getType(blockStack.getMeta()) == EnumAltarComponent.CRYSTAL)))
                return true;

        if (altarComponent.getBlockStack().getBlock() == Blocks.glowstone)
            if (blockStack.getBlock() instanceof BlockGlowstone || (blockStack.getBlock() instanceof IAltarComponent && (((IAltarComponent) blockStack.getBlock()).getType(blockStack.getMeta()) == EnumAltarComponent.GLOWSTONE)))
                return true;

        if (altarComponent.getBlockStack().getBlock() == Blocks.beacon)
            if (blockStack.getBlock() instanceof BlockBeacon || (blockStack.getBlock() instanceof IAltarComponent && (((IAltarComponent) blockStack.getBlock()).getType(blockStack.getMeta()) == EnumAltarComponent.BEACON)))
                return true;

        if (altarComponent.getBlockStack().getBlock() == Blocks.air)
            if (blockStack.getBlock() != Blocks.air)
                return true;

        return false;
    }
}