Paper/src/main/java/net/minecraft/server/BlockTripwireHook.java

package net.minecraft.server;

import java.util.Random;

import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit

public class BlockTripwireHook extends Block {

    public BlockTripwireHook(int i) {
        super(i, 172, Material.ORIENTABLE);
        this.a(CreativeModeTab.d);
        this.b(true);
    }

    public AxisAlignedBB e(World world, int i, int j, int k) {
        return null;
    }

    public boolean d() {
        return false;
    }

    public boolean c() {
        return false;
    }

    public int b() {
        return 29;
    }

    public int p_() {
        return 10;
    }

    public boolean canPlace(World world, int i, int j, int k, int l) {
        return l == 2 && world.s(i, j, k + 1) ? true : (l == 3 && world.s(i, j, k - 1) ? true : (l == 4 && world.s(i + 1, j, k) ? true : l == 5 && world.s(i - 1, j, k)));
    }

    public boolean canPlace(World world, int i, int j, int k) {
        return world.s(i - 1, j, k) ? true : (world.s(i + 1, j, k) ? true : (world.s(i, j, k - 1) ? true : world.s(i, j, k + 1)));
    }

    public void postPlace(World world, int i, int j, int k, int l, float f, float f1, float f2) {
        byte b0 = 0;

        if (l == 2 && world.b(i, j, k + 1, true)) {
            b0 = 2;
        }

        if (l == 3 && world.b(i, j, k - 1, true)) {
            b0 = 0;
        }

        if (l == 4 && world.b(i + 1, j, k, true)) {
            b0 = 1;
        }

        if (l == 5 && world.b(i - 1, j, k, true)) {
            b0 = 3;
        }

        this.a(world, i, j, k, this.id, b0, false, -1, 0);
    }

    public void doPhysics(World world, int i, int j, int k, int l) {
        if (l != this.id) {
            if (this.l(world, i, j, k)) {
                int i1 = world.getData(i, j, k);
                int j1 = i1 & 3;
                boolean flag = false;

                if (!world.s(i - 1, j, k) && j1 == 3) {
                    flag = true;
                }

                if (!world.s(i + 1, j, k) && j1 == 1) {
                    flag = true;
                }

                if (!world.s(i, j, k - 1) && j1 == 0) {
                    flag = true;
                }

                if (!world.s(i, j, k + 1) && j1 == 2) {
                    flag = true;
                }

                if (flag) {
                    this.c(world, i, j, k, i1, 0);
                    world.setTypeId(i, j, k, 0);
                }
            }
        }
    }

    public void a(World world, int i, int j, int k, int l, int i1, boolean flag, int j1, int k1) {
        int l1 = i1 & 3;
        boolean flag1 = (i1 & 4) == 4;
        boolean flag2 = (i1 & 8) == 8;
        boolean flag3 = l == Block.TRIPWIRE_SOURCE.id;
        boolean flag4 = false;
        boolean flag5 = !world.t(i, j - 1, k);
        int i2 = Direction.a[l1];
        int j2 = Direction.b[l1];
        int k2 = 0;
        int[] aint = new int[42];

        int l2;
        int i3;
        int j3;
        int k3;
        int l3;

        for (i3 = 1; i3 < 42; ++i3) {
            l2 = i + i2 * i3;
            k3 = k + j2 * i3;
            j3 = world.getTypeId(l2, j, k3);
            if (j3 == Block.TRIPWIRE_SOURCE.id) {
                l3 = world.getData(l2, j, k3);
                if ((l3 & 3) == Direction.e[l1]) {
                    k2 = i3;
                }
                break;
            }

            if (j3 != Block.TRIPWIRE.id && i3 != j1) {
                aint[i3] = -1;
                flag3 = false;
            } else {
                l3 = i3 == j1 ? k1 : world.getData(l2, j, k3);
                boolean flag6 = (l3 & 8) != 8;
                boolean flag7 = (l3 & 1) == 1;
                boolean flag8 = (l3 & 2) == 2;

                flag3 &= flag8 == flag5;
                flag4 |= flag6 && flag7;
                aint[i3] = l3;
                if (i3 == j1) {
                    world.a(i, j, k, l, this.p_());
                    flag3 &= flag6;
                }
            }
        }

        flag3 &= k2 > 1;
        flag4 &= flag3;
        i3 = (flag3 ? 4 : 0) | (flag4 ? 8 : 0);
        i1 = l1 | i3;
        if (k2 > 0) {
            l2 = i + i2 * k2;
            k3 = k + j2 * k2;
            j3 = Direction.e[l1];
            world.setData(l2, j, k3, j3 | i3);
            this.e(world, l2, j, k3, j3);
            this.a(world, l2, j, k3, flag3, flag4, flag1, flag2);
        }

        // CraftBukkit start
        org.bukkit.block.Block block = world.getWorld().getBlockAt(i, j, k);

        BlockRedstoneEvent eventRedstone = new BlockRedstoneEvent(block, 1, 0);
        world.getServer().getPluginManager().callEvent(eventRedstone);

        if (eventRedstone.getNewCurrent() > 0) {
            return;
        }
        // CraftBukkit end

        this.a(world, i, j, k, flag3, flag4, flag1, flag2);
        if (l > 0) {
            world.setData(i, j, k, i1);
            if (flag) {
                this.e(world, i, j, k, l1);
            }
        }

        if (flag1 != flag3) {
            for (l2 = 1; l2 < k2; ++l2) {
                k3 = i + i2 * l2;
                j3 = k + j2 * l2;
                l3 = aint[l2];
                if (l3 >= 0) {
                    if (flag3) {
                        l3 |= 4;
                    } else {
                        l3 &= -5;
                    }

                    world.setData(k3, j, j3, l3);
                }
            }
        }
    }

    public void b(World world, int i, int j, int k, Random random) {
        this.a(world, i, j, k, this.id, world.getData(i, j, k), true, -1, 0);
    }

    private void a(World world, int i, int j, int k, boolean flag, boolean flag1, boolean flag2, boolean flag3) {
        if (flag1 && !flag3) {
            world.makeSound((double) i + 0.5D, (double) j + 0.1D, (double) k + 0.5D, "random.click", 0.4F, 0.6F);
        } else if (!flag1 && flag3) {
            world.makeSound((double) i + 0.5D, (double) j + 0.1D, (double) k + 0.5D, "random.click", 0.4F, 0.5F);
        } else if (flag && !flag2) {
            world.makeSound((double) i + 0.5D, (double) j + 0.1D, (double) k + 0.5D, "random.click", 0.4F, 0.7F);
        } else if (!flag && flag2) {
            world.makeSound((double) i + 0.5D, (double) j + 0.1D, (double) k + 0.5D, "random.bowhit", 0.4F, 1.2F / (world.random.nextFloat() * 0.2F + 0.9F));
        }
    }

    private void e(World world, int i, int j, int k, int l) {
        world.applyPhysics(i, j, k, this.id);
        if (l == 3) {
            world.applyPhysics(i - 1, j, k, this.id);
        } else if (l == 1) {
            world.applyPhysics(i + 1, j, k, this.id);
        } else if (l == 0) {
            world.applyPhysics(i, j, k - 1, this.id);
        } else if (l == 2) {
            world.applyPhysics(i, j, k + 1, this.id);
        }
    }

    private boolean l(World world, int i, int j, int k) {
        if (!this.canPlace(world, i, j, k)) {
            this.c(world, i, j, k, world.getData(i, j, k), 0);
            world.setTypeId(i, j, k, 0);
            return false;
        } else {
            return true;
        }
    }

    public void updateShape(IBlockAccess iblockaccess, int i, int j, int k) {
        int l = iblockaccess.getData(i, j, k) & 3;
        float f = 0.1875F;

        if (l == 3) {
            this.a(0.0F, 0.2F, 0.5F - f, f * 2.0F, 0.8F, 0.5F + f);
        } else if (l == 1) {
            this.a(1.0F - f * 2.0F, 0.2F, 0.5F - f, 1.0F, 0.8F, 0.5F + f);
        } else if (l == 0) {
            this.a(0.5F - f, 0.2F, 0.0F, 0.5F + f, 0.8F, f * 2.0F);
        } else if (l == 2) {
            this.a(0.5F - f, 0.2F, 1.0F - f * 2.0F, 0.5F + f, 0.8F, 1.0F);
        }
    }

    public void remove(World world, int i, int j, int k, int l, int i1) {
        boolean flag = (i1 & 4) == 4;
        boolean flag1 = (i1 & 8) == 8;

        if (flag || flag1) {
            this.a(world, i, j, k, 0, i1, false, -1, 0);
        }

        if (flag1) {
            world.applyPhysics(i, j, k, this.id);
            int j1 = i1 & 3;

            if (j1 == 3) {
                world.applyPhysics(i - 1, j, k, this.id);
            } else if (j1 == 1) {
                world.applyPhysics(i + 1, j, k, this.id);
            } else if (j1 == 0) {
                world.applyPhysics(i, j, k - 1, this.id);
            } else if (j1 == 2) {
                world.applyPhysics(i, j, k + 1, this.id);
            }
        }

        super.remove(world, i, j, k, l, i1);
    }

    public boolean a(IBlockAccess iblockaccess, int i, int j, int k, int l) {
        return (iblockaccess.getData(i, j, k) & 8) == 8;
    }

    public boolean c(World world, int i, int j, int k, int l) {
        int i1 = world.getData(i, j, k);

        if ((i1 & 8) != 8) {
            return false;
        } else {
            int j1 = i1 & 3;

            return j1 == 2 && l == 2 ? true : (j1 == 0 && l == 3 ? true : (j1 == 1 && l == 4 ? true : j1 == 3 && l == 5));
        }
    }

    public boolean isPowerSource() {
        return true;
    }
}