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authorMattes D <github@xoft.cz>2014-12-25 00:31:56 +0100
committerMattes D <github@xoft.cz>2014-12-25 00:31:56 +0100
commit1d593134da55317e3ec09c56463d4a0a92128b81 (patch)
tree220066e191e85bb3fafd4bccbcfbe62ed737f2f6 /src/Items/ItemMobHead.h
parentByteBuffer: SingleThreadAccessChecker is request-only. (diff)
parentAPIDump: Updated the player block placement documentation. (diff)
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-rw-r--r--src/Items/ItemMobHead.h261
1 files changed, 261 insertions, 0 deletions
diff --git a/src/Items/ItemMobHead.h b/src/Items/ItemMobHead.h
index 4c36fe8d8..d962dabae 100644
--- a/src/Items/ItemMobHead.h
+++ b/src/Items/ItemMobHead.h
@@ -3,6 +3,7 @@
#include "ItemHandler.h"
#include "../World.h"
+#include "../BlockEntities/MobHeadEntity.h"
@@ -18,6 +19,266 @@ public:
}
+ virtual bool OnPlayerPlace(
+ cWorld & a_World, cPlayer & a_Player, const cItem & a_EquippedItem,
+ int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
+ int a_CursorX, int a_CursorY, int a_CursorZ
+ ) override
+ {
+ // Cannot place a head at "no face" and from the bottom:
+ if ((a_BlockFace == BLOCK_FACE_NONE) || (a_BlockFace == BLOCK_FACE_BOTTOM))
+ {
+ return true;
+ }
+ AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace);
+
+ // If the placed head is a wither, try to spawn the wither first:
+ if (a_EquippedItem.m_ItemDamage == E_META_HEAD_WITHER)
+ {
+ if (TrySpawnWitherAround(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ))
+ {
+ return true;
+ }
+ // Wither not created, proceed with regular head placement
+ }
+
+ return PlaceRegularHead(a_World, a_Player, a_EquippedItem, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace);
+ }
+
+
+ /** Places a regular head block with no mob spawning checking. */
+ bool PlaceRegularHead(
+ cWorld & a_World, cPlayer & a_Player, const cItem & a_EquippedItem,
+ int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace
+ )
+ {
+ // Place the block:
+ if (!a_Player.PlaceBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_HEAD, static_cast<NIBBLETYPE>(a_EquippedItem.m_ItemType)))
+ {
+ return false;
+ }
+
+ // Use a callback to set the properties of the mob head block entity:
+ class cCallback : public cBlockEntityCallback
+ {
+ cPlayer & m_Player;
+ eMobHeadType m_HeadType;
+ NIBBLETYPE m_BlockMeta;
+
+ virtual bool Item(cBlockEntity * a_BlockEntity)
+ {
+ if (a_BlockEntity->GetBlockType() != E_BLOCK_HEAD)
+ {
+ return false;
+ }
+ cMobHeadEntity * MobHeadEntity = static_cast<cMobHeadEntity *>(a_BlockEntity);
+
+ int Rotation = 0;
+ if (m_BlockMeta == 1)
+ {
+ Rotation = FloorC(m_Player.GetYaw() * 16.0f / 360.0f + 0.5f) & 0x0f;
+ }
+
+ MobHeadEntity->SetType(m_HeadType);
+ MobHeadEntity->SetRotation(static_cast<eMobHeadRotation>(Rotation));
+ MobHeadEntity->GetWorld()->BroadcastBlockEntity(MobHeadEntity->GetPosX(), MobHeadEntity->GetPosY(), MobHeadEntity->GetPosZ());
+ return false;
+ }
+
+ public:
+ cCallback (cPlayer & a_CBPlayer, eMobHeadType a_HeadType, NIBBLETYPE a_BlockMeta) :
+ m_Player(a_CBPlayer),
+ m_HeadType(a_HeadType),
+ m_BlockMeta(a_BlockMeta)
+ {}
+ };
+ cCallback Callback(a_Player, static_cast<eMobHeadType>(a_EquippedItem.m_ItemType), static_cast<NIBBLETYPE>(a_BlockFace));
+ a_World.DoWithBlockEntityAt(a_BlockX, a_BlockY, a_BlockZ, Callback);
+ return true;
+ }
+
+
+ /** Spawns a wither if the wither skull placed at the specified coords completes wither's spawning formula.
+ Returns true if the wither was created. */
+ bool TrySpawnWitherAround(
+ cWorld & a_World, cPlayer & a_Player,
+ int a_BlockX, int a_BlockY, int a_BlockZ
+ )
+ {
+ // No wither can be created at Y < 2 - not enough space for the formula:
+ if (a_BlockY < 2)
+ {
+ return false;
+ }
+
+ // Check for all relevant wither locations:
+ static const Vector3i RelCoords[] =
+ {
+ { 0, 0, 0},
+ { 1, 0, 0},
+ {-1, 0, 0},
+ { 0, 0, 1},
+ { 0, 0, -1},
+ };
+ for (size_t i = 0; i < ARRAYCOUNT(RelCoords); ++i)
+ {
+ if (TrySpawnWitherAt(
+ a_World, a_Player,
+ a_BlockX, a_BlockY, a_BlockZ,
+ RelCoords[i].x, RelCoords[i].z
+ ))
+ {
+ return true;
+ }
+ } // for i - Coords[]
+
+ return false;
+ }
+
+
+ /** Tries to spawn a wither at the specified offset from the placed head block.
+ PlacedHead coords are used to override the block query - at those coords the block is not queried from the world,
+ but assumed to be a head instead.
+ Offset is used to shift the image around the X and Z axis.
+ Returns true iff the wither was created successfully. */
+ bool TrySpawnWitherAt(
+ cWorld & a_World, cPlayer & a_Player,
+ int a_PlacedHeadX, int a_PlacedHeadY, int a_PlacedHeadZ,
+ int a_OffsetX, int a_OffsetZ
+ )
+ {
+ // Image for the wither at the X axis:
+ static const sSetBlock ImageWitherX[] =
+ {
+ {-1, 0, 0, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ { 0, 0, 0, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ { 1, 0, 0, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ {-1, -1, 0, E_BLOCK_SOULSAND, 0},
+ { 0, -1, 0, E_BLOCK_SOULSAND, 0},
+ { 1, -1, 0, E_BLOCK_SOULSAND, 0},
+ {-1, -2, 0, E_BLOCK_AIR, 0},
+ { 0, -2, 0, E_BLOCK_SOULSAND, 0},
+ { 1, -2, 0, E_BLOCK_AIR, 0},
+ };
+
+ // Image for the wither at the Z axis:
+ static const sSetBlock ImageWitherZ[] =
+ {
+ { 0, 0, -1, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ { 0, 0, 0, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ { 0, 0, 1, E_BLOCK_HEAD, E_META_HEAD_WITHER},
+ { 0, -1, -1, E_BLOCK_SOULSAND, 0},
+ { 0, -1, 0, E_BLOCK_SOULSAND, 0},
+ { 0, -1, 1, E_BLOCK_SOULSAND, 0},
+ { 0, -2, -1, E_BLOCK_AIR, 0},
+ { 0, -2, 0, E_BLOCK_SOULSAND, 0},
+ { 0, -2, 1, E_BLOCK_AIR, 0},
+ };
+
+ // Try to spawn the wither from each image:
+ return (
+ TrySpawnWitherFromImage(
+ a_World, a_Player, ImageWitherX, ARRAYCOUNT(ImageWitherX),
+ a_PlacedHeadX, a_PlacedHeadY, a_PlacedHeadZ,
+ a_OffsetX, a_OffsetZ
+ ) ||
+ TrySpawnWitherFromImage(
+ a_World, a_Player, ImageWitherZ, ARRAYCOUNT(ImageWitherZ),
+ a_PlacedHeadX, a_PlacedHeadY, a_PlacedHeadZ,
+ a_OffsetX, a_OffsetZ
+ )
+ );
+ }
+
+
+ /** Tries to spawn a wither from the specified image at the specified offset from the placed head block.
+ PlacedHead coords are used to override the block query - at those coords the block is not queried from the world,
+ but assumed to be a head instead.
+ Offset is used to shift the image around the X and Z axis.
+ Returns true iff the wither was created successfully. */
+ bool TrySpawnWitherFromImage(
+ cWorld & a_World, cPlayer & a_Player, const sSetBlock * a_Image, size_t a_ImageCount,
+ int a_PlacedHeadX, int a_PlacedHeadY, int a_PlacedHeadZ,
+ int a_OffsetX, int a_OffsetZ
+ )
+ {
+ // Check each block individually; simultaneously build the SetBlockVector for clearing the blocks:
+ sSetBlockVector AirBlocks;
+ AirBlocks.reserve(a_ImageCount);
+ for (size_t i = 0; i < a_ImageCount; i++)
+ {
+ // Get the absolute coords of the image:
+ int BlockX = a_PlacedHeadX + a_OffsetX + a_Image[i].m_RelX;
+ int BlockY = a_PlacedHeadY + a_Image[i].m_RelY;
+ int BlockZ = a_PlacedHeadZ + a_OffsetZ + a_Image[i].m_RelZ;
+
+ // If the query is for the placed head, short-circuit-evaluate it:
+ if ((BlockX == a_PlacedHeadX) && (BlockY == a_PlacedHeadY) && (BlockZ == a_PlacedHeadZ))
+ {
+ if ((a_Image[i].m_BlockType != E_BLOCK_HEAD) || (a_Image[i].m_BlockMeta != E_META_HEAD_WITHER))
+ {
+ return false; // Didn't match
+ }
+ continue; // Matched, continue checking the rest of the image
+ }
+
+ // Query the world block:
+ BLOCKTYPE BlockType;
+ NIBBLETYPE BlockMeta;
+ if (!a_World.GetBlockTypeMeta(BlockX, BlockY, BlockZ, BlockType, BlockMeta))
+ {
+ // Cannot query block, assume unloaded chunk, fail to spawn the wither
+ return false;
+ }
+
+ // Compare the world block:
+ if ((BlockType != a_Image[i].m_BlockType) || (BlockMeta != a_Image[i].m_BlockMeta))
+ {
+ return false; // Didn't match
+ }
+ // Matched, continue checking
+ } // for i - a_Image
+
+ // All image blocks matched, try place the wither:
+ if (!a_Player.PlaceBlocks(AirBlocks))
+ {
+ return false;
+ }
+
+ // Spawn the wither:
+ int BlockX = a_PlacedHeadX + a_OffsetX;
+ int BlockZ = a_PlacedHeadZ + a_OffsetZ;
+ a_World.SpawnMob(static_cast<double>(BlockX) + 0.5, a_PlacedHeadY - 2, static_cast<double>(BlockZ) + 0.5, mtWither);
+ AwardSpawnWitherAchievement(a_World, BlockX, a_PlacedHeadY - 2, BlockZ);
+ return true;
+ }
+
+
+ /** Awards the achievement to all players close to the specified point. */
+ void AwardSpawnWitherAchievement(cWorld & a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ class cPlayerCallback : public cPlayerListCallback
+ {
+ Vector3f m_Pos;
+
+ virtual bool Item(cPlayer * a_Player)
+ {
+ // If player is close, award achievement:
+ double Dist = (a_Player->GetPosition() - m_Pos).Length();
+ if (Dist < 50.0)
+ {
+ a_Player->AwardAchievement(achSpawnWither);
+ }
+ return false;
+ }
+
+ public:
+ cPlayerCallback(const Vector3f & a_Pos) : m_Pos(a_Pos) {}
+ } PlayerCallback(Vector3f(static_cast<float>(a_BlockX), static_cast<float>(a_BlockY), static_cast<float>(a_BlockZ)));
+ a_World.ForEachPlayer(PlayerCallback);
+ }
+
+
virtual bool IsPlaceable(void) override
{
return true;