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authorAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
committerAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
commit675b4aa878f16291ce33fced48a2bc7425f635ae (patch)
tree409914df27a98f65adf866da669429c4de141b6f /src/Blocks/BlockHandler.h
parentLineBlockTracer: Using the coord-based block faces. (diff)
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Diffstat (limited to 'src/Blocks/BlockHandler.h')
-rw-r--r--src/Blocks/BlockHandler.h152
1 files changed, 152 insertions, 0 deletions
diff --git a/src/Blocks/BlockHandler.h b/src/Blocks/BlockHandler.h
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+++ b/src/Blocks/BlockHandler.h
@@ -0,0 +1,152 @@
+
+#pragma once
+
+#include "../Defines.h"
+#include "../Item.h"
+#include "../Chunk.h"
+
+
+
+
+
+// fwd:
+class cWorld;
+class cPlayer;
+
+
+
+
+
+class cBlockHandler
+{
+public:
+ cBlockHandler(BLOCKTYPE a_BlockType);
+
+ /// Called when the block gets ticked either by a random tick or by a queued tick
+ virtual void OnUpdate(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /** Called before a block is placed into a world.
+ The handler should return true to allow placement, false to refuse.
+ Also, the handler should set a_BlockType and a_BlockMeta to correct values for the newly placed block.
+ Called by cItemHandler::GetPlacementBlockTypeMeta() if the item is a block
+ */
+ virtual bool GetPlacementBlockTypeMeta(
+ cWorld * a_World, cPlayer * a_Player,
+ int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace,
+ int a_CursorX, int a_CursorY, int a_CursorZ,
+ BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
+ );
+
+ /// Called by cWorld::SetBlock() after the block has been set
+ virtual void OnPlaced(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
+
+ /// Called by cClientHandle::HandlePlaceBlock() after the player has placed a new block. Called after OnPlaced().
+ virtual void OnPlacedByPlayer(
+ cWorld * a_World, cPlayer * a_Player,
+ int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace,
+ int a_CursorX, int a_CursorY, int a_CursorZ,
+ BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
+ );
+
+ /// Called before the player has destroyed a block
+ virtual void OnDestroyedByPlayer(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Called before a block gets destroyed / replaced with air
+ virtual void OnDestroyed(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Called when a direct neighbor of this block has been changed (The position is the own position, not the neighbor position)
+ virtual void OnNeighborChanged(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Notifies all neighbors of the given block about a change
+ static void NeighborChanged(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Called while the player diggs the block.
+ virtual void OnDigging(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Called if the user right clicks the block and the block is useable
+ virtual void OnUse(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ);
+
+ /// Called when the item is mined to convert it into pickups. Pickups may specify multiple items. Appends items to a_Pickups, preserves its original contents
+ virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta);
+
+ /// Handles the dropping of a block based on what ConvertToDrops() returns. This will not destroy the block. a_Digger is the entity causing the drop; it may be NULL
+ virtual void DropBlock(cWorld * a_World, cEntity * a_Digger, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+ /// Returns step sound name of block
+ virtual const char * GetStepSound(void);
+
+ /// Checks if the block can stay at the specified relative coords in the chunk
+ virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk);
+
+ /** Checks if the block can be placed at this point.
+ Default: CanBeAt(...)
+ NOTE: This call doesn't actually place the block
+ */
+ // virtual bool CanBePlacedAt(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Dir);
+
+ /// Called to check whether this block supports a rclk action. If it returns true, OnUse() is called
+ virtual bool IsUseable(void);
+
+ /** Indicates whether the client will click through this block.
+ For example digging a fire will hit the block below the fire so fire is clicked through
+ */
+ virtual bool IsClickedThrough(void);
+
+ /** Checks if the player can build "inside" this block.
+ For example blocks placed "on" snow will be placed at the same position. So: Snow ignores Build collision
+ */
+ virtual bool DoesIgnoreBuildCollision(void);
+
+ /// Does this block drop if it gets destroyed by an unsuitable situation? Default: true
+ virtual bool DoesDropOnUnsuitable(void);
+
+ /** Called when one of the neighbors gets set; equivalent to MC block update.
+ By default drops if position no more suitable (CanBeAt(), DoesDropOnUnsuitable(), Drop()),
+ and wakes up all simulators on the block.
+ */
+ virtual void Check(int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk);
+
+ /// Returns the meta for a block after rotating it counter-clockwise from the specified meta. Default: no change
+ virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) { return a_Meta; }
+
+ /// Returns the meta for a block after rotating it clockwise from the specified meta. Default: no change
+ virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) { return a_Meta; }
+
+ /// Returns the meta for a block after mirroring it around the XY plane. Default: no change
+ virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) { return a_Meta; }
+
+ /// Returns the meta for a block after mirroring it around the XZ plane. Default: no change
+ virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) { return a_Meta; }
+
+ /// Returns the meta for a block after mirroring it around the YZ plane. Default: no change
+ virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) { return a_Meta; }
+
+
+ /// Get the blockhandler for a specific block id
+ static cBlockHandler * GetBlockHandler(BLOCKTYPE a_BlockType);
+
+ /// Deletes all initialised block handlers
+ static void Deinit();
+
+protected:
+ BLOCKTYPE m_BlockType;
+
+ // Creates a new blockhandler for the given block type. For internal use only, use ::GetBlockHandler() instead.
+ static cBlockHandler *CreateBlockHandler(BLOCKTYPE a_BlockType);
+ static cBlockHandler *m_BlockHandler[256];
+ static bool m_HandlerInitialized; //used to detect if the blockhandlers are initialized
+};
+
+
+
+
+
+// Shortcut to get the blockhandler for a specific block
+inline cBlockHandler * BlockHandler(BLOCKTYPE a_BlockType)
+{
+ return cBlockHandler::GetBlockHandler(a_BlockType);
+}
+
+
+
+