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-rw-r--r--src/Items/ItemPumpkin.h156
1 files changed, 156 insertions, 0 deletions
diff --git a/src/Items/ItemPumpkin.h b/src/Items/ItemPumpkin.h
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+
+// ItemPumpkin.h
+
+// Declares the cItemPumpkinHandler class representing the pumpkin block in its item form
+
+
+
+
+
+#pragma once
+
+#include "ItemHandler.h"
+
+
+
+
+
+class cItemPumpkinHandler:
+ public cItemHandler
+{
+ typedef cItemHandler super;
+
+public:
+ cItemPumpkinHandler(void):
+ super(E_BLOCK_PUMPKIN)
+ {
+ }
+
+
+ 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
+ {
+ // First try spawning a snow golem or an iron golem:
+ int PlacedBlockX = a_BlockX;
+ int PlacedBlockY = a_BlockY;
+ int PlacedBlockZ = a_BlockZ;
+ AddFaceDirection(PlacedBlockX, PlacedBlockY, PlacedBlockZ, a_BlockFace);
+ if (TrySpawnGolem(a_World, a_Player, PlacedBlockX, PlacedBlockY, PlacedBlockZ))
+ {
+ // The client thinks that they placed the pumpkin, let them know it's been replaced:
+ a_Player.SendBlocksAround(PlacedBlockX, PlacedBlockY, PlacedBlockZ);
+ return true;
+ }
+
+ // No golem at these coords, place the block normally:
+ return super::OnPlayerPlace(a_World, a_Player, a_EquippedItem, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
+ }
+
+
+ /** Spawns a snow / iron golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+ Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched. */
+ bool TrySpawnGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ // A golem can't form with a pumpkin below level 2 or above level 255
+ if ((a_BlockY < 2) || (a_BlockY >= cChunkDef::Height))
+ {
+ return false;
+ }
+
+ // Decide which golem to try spawning based on the block below the placed pumpkin:
+ switch (a_World.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ))
+ {
+ case E_BLOCK_SNOW_BLOCK: return TrySpawnSnowGolem(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ);
+ case E_BLOCK_IRON_BLOCK: return TrySpawnIronGolem(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ);
+ default:
+ {
+ // No golem here
+ return false;
+ }
+ }
+ }
+
+
+ /** Spawns a snow golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+ Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched.
+ Assumes that the block below the specified block has already been checked and is a snow block. */
+ bool TrySpawnSnowGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ // Need one more snow block 2 blocks below the pumpkin:
+ if (a_World.GetBlock(a_BlockX, a_BlockY - 2, a_BlockZ) != E_BLOCK_SNOW_BLOCK)
+ {
+ return false;
+ }
+
+ // Try to place air blocks where the original recipe blocks were:
+ sSetBlockVector AirBlocks;
+ AirBlocks.emplace_back(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0); // Head
+ AirBlocks.emplace_back(a_BlockX, a_BlockY - 1, a_BlockZ, E_BLOCK_AIR, 0); // Torso
+ AirBlocks.emplace_back(a_BlockX, a_BlockY - 2, a_BlockZ, E_BLOCK_AIR, 0); // Legs
+ if (!a_Player.PlaceBlocks(AirBlocks))
+ {
+ return false;
+ }
+
+ // Spawn the golem:
+ a_World.SpawnMob(static_cast<double>(a_BlockX) + 0.5, a_BlockY - 2, static_cast<double>(a_BlockZ) + 0.5, mtSnowGolem);
+ return true;
+ }
+
+
+ /** Spawns an iron golem if the shape matches the recipe, supposing that the block placed at the specified coords is a pumpkin.
+ Returns true if the golem blocks are removed (for spawning), false if the recipe is not matched.
+ Assumes that the block below the specified block has already been checked and is an iron block. */
+ bool TrySpawnIronGolem(cWorld & a_World, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ // Need one more iron block 2 blocks below the pumpkin:
+ if (a_World.GetBlock(a_BlockX, a_BlockY - 2, a_BlockZ) != E_BLOCK_IRON_BLOCK)
+ {
+ return false;
+ }
+
+ // Check the two arm directions (X, Z) using a loop over two sets of offset vectors:
+ static const Vector3i ArmOffsets[] =
+ {
+ {1, 0, 0},
+ {0, 0, 1},
+ };
+ for (size_t i = 0; i < ARRAYCOUNT(ArmOffsets); i++)
+ {
+ // If the arm blocks don't match, bail out of this loop repetition:
+ if (
+ (a_World.GetBlock(a_BlockX + ArmOffsets[i].x, a_BlockY - 1, a_BlockZ + ArmOffsets[i].z) != E_BLOCK_IRON_BLOCK) ||
+ (a_World.GetBlock(a_BlockX - ArmOffsets[i].x, a_BlockY - 1, a_BlockZ - ArmOffsets[i].z) != E_BLOCK_IRON_BLOCK)
+ )
+ {
+ continue;
+ }
+
+ // Try to place air blocks where the original recipe blocks were:
+ sSetBlockVector AirBlocks;
+ AirBlocks.emplace_back(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_AIR, 0); // Head
+ AirBlocks.emplace_back(a_BlockX, a_BlockY - 1, a_BlockZ, E_BLOCK_AIR, 0); // Torso
+ AirBlocks.emplace_back(a_BlockX, a_BlockY - 2, a_BlockZ, E_BLOCK_AIR, 0); // Legs
+ AirBlocks.emplace_back(a_BlockX + ArmOffsets[i].x, a_BlockY - 1, a_BlockZ + ArmOffsets[i].z, E_BLOCK_AIR, 0); // Arm
+ AirBlocks.emplace_back(a_BlockX - ArmOffsets[i].x, a_BlockY - 1, a_BlockZ - ArmOffsets[i].z, E_BLOCK_AIR, 0); // Arm
+ if (!a_Player.PlaceBlocks(AirBlocks))
+ {
+ return false;
+ }
+
+ // Spawn the golem:
+ a_World.SpawnMob(static_cast<double>(a_BlockX) + 0.5, a_BlockY - 2, static_cast<double>(a_BlockZ) + 0.5, mtIronGolem);
+ return true;
+ } // for i - ArmOffsets[]
+
+ // Neither arm offset matched, this thing is not a complete golem
+ return false;
+ }
+};
+
+
+
+