541 lines
10 KiB
C++
541 lines
10 KiB
C++
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// Minecart.cpp
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// Implements the cMinecart class representing a minecart in the world
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// Indiana Jones!
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#include "Globals.h"
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#include "Minecart.h"
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#include "../World.h"
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#include "../ClientHandle.h"
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#include "../Chunk.h"
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#include "Player.h"
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cMinecart::cMinecart(ePayload a_Payload, double a_X, double a_Y, double a_Z) :
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super(etMinecart, a_X, a_Y, a_Z, 0.98, 0.7),
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m_Payload(a_Payload),
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m_LastDamage(0)
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{
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SetMass(20.f);
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SetMaxHealth(6);
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SetHealth(6);
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}
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void cMinecart::SpawnOn(cClientHandle & a_ClientHandle)
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{
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char SubType = 0;
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switch (m_Payload)
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{
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case mpNone: SubType = 0; break;
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case mpChest: SubType = 1; break;
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case mpFurnace: SubType = 2; break;
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case mpTNT: SubType = 3; break;
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case mpHopper: SubType = 5; break;
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default:
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{
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ASSERT(!"Unknown payload, cannot spawn on client");
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return;
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}
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}
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a_ClientHandle.SendSpawnVehicle(*this, 10, SubType); // 10 = Minecarts, SubType = What type of Minecart
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}
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void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
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{
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int PosY = (int)floor(GetPosY());
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if ((PosY <= 0) || (PosY >= cChunkDef::Height))
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{
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// Outside the world, just process normal falling physics
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super::HandlePhysics(a_Dt, a_Chunk);
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BroadcastMovementUpdate();
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return;
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}
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int RelPosX = (int)floor(GetPosX()) - a_Chunk.GetPosX() * cChunkDef::Width;
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int RelPosZ = (int)floor(GetPosZ()) - a_Chunk.GetPosZ() * cChunkDef::Width;
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cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);
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if (Chunk == NULL)
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{
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// Inside an unloaded chunk, bail out all processing
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return;
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}
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BLOCKTYPE BelowType = Chunk->GetBlock(RelPosX, PosY - 1, RelPosZ);
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BLOCKTYPE InsideType = Chunk->GetBlock(RelPosX, PosY, RelPosZ);
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if (IsBlockRail(BelowType))
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{
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HandleRailPhysics(a_Dt, *Chunk);
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}
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else
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{
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if (IsBlockRail(InsideType))
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{
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SetPosY(PosY + 1);
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HandleRailPhysics(a_Dt, *Chunk);
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}
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else
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{
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super::HandlePhysics(a_Dt, *Chunk);
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BroadcastMovementUpdate();
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}
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}
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}
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static const double MAX_SPEED = 8;
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static const double MAX_SPEED_NEGATIVE = (0 - MAX_SPEED);
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void cMinecart::HandleRailPhysics(float a_Dt, cChunk & a_Chunk)
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{
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super::HandlePhysics(a_Dt, a_Chunk); // Main physics handling
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/*
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NOTE: Please bear in mind that taking away from negatives make them even more negative,
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adding to negatives make them positive, etc.
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*/
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// Get block meta below the cart
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int RelPosX = (int)floor(GetPosX()) - a_Chunk.GetPosX() * cChunkDef::Width;
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int RelPosZ = (int)floor(GetPosZ()) - a_Chunk.GetPosZ() * cChunkDef::Width;
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NIBBLETYPE BelowMeta = a_Chunk.GetMeta(RelPosX, (int)floor(GetPosY() - 1), RelPosZ);
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double SpeedX = GetSpeedX(), SpeedY = GetSpeedY(), SpeedZ = GetSpeedZ(); // Get current speed
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switch (BelowMeta)
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{
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case E_META_RAIL_ZM_ZP: // NORTHSOUTH
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{
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SetRotation(270);
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SpeedY = 0; // Don't move vertically as on ground
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SpeedX = 0; // Correct diagonal movement from curved rails
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if (SpeedZ != 0) // Don't do anything if cart is stationary
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{
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if (SpeedZ > 0)
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{
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// Going SOUTH, slow down
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SpeedZ = SpeedZ - 0.1;
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}
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else
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{
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// Going NORTH, slow down
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SpeedZ = SpeedZ + 0.1;
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}
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}
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break;
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}
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case E_META_RAIL_XM_XP: // EASTWEST
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{
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SetRotation(180);
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SpeedY = 0;
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SpeedZ = 0;
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if (SpeedX != 0)
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{
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if (SpeedX > 0)
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{
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SpeedX = SpeedX - 0.1;
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}
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else
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{
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SpeedX = SpeedX + 0.1;
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}
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}
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break;
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}
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case E_META_RAIL_ASCEND_ZM: // ASCEND NORTH
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{
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SetRotation(270);
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SetPosY(floor(GetPosY()) + 0.2); // It seems it doesn't work without levitation :/
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SpeedX = 0;
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if (SpeedZ >= 0)
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{
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// SpeedZ POSITIVE, going SOUTH
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if (SpeedZ <= MAX_SPEED) // Speed limit
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{
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SpeedZ = SpeedZ + 0.5; // Speed up
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SpeedY = (0 - SpeedZ); // Downward movement is negative (0 minus positive numbers is negative)
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}
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else
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{
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SpeedZ = MAX_SPEED; // Enforce speed limit
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SpeedY = (0 - SpeedZ);
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}
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}
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else
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{
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// SpeedZ NEGATIVE, going NORTH
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SpeedZ = SpeedZ + 0.4; // Slow down
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SpeedY = (0 - SpeedZ); // Upward movement is positive (0 minus negative number is positive number)
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}
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break;
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}
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case E_META_RAIL_ASCEND_ZP: // ASCEND SOUTH
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{
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SetRotation(270);
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SetPosY(floor(GetPosY()) + 0.2);
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SpeedX = 0;
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if (SpeedZ > 0)
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{
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// SpeedZ POSITIVE, going SOUTH
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SpeedZ = SpeedZ - 0.4; // Slow down
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SpeedY = SpeedZ; // Upward movement positive
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}
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else
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{
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if (SpeedZ >= MAX_SPEED_NEGATIVE) // Speed limit
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{
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// SpeedZ NEGATIVE, going NORTH
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SpeedZ = SpeedZ - 0.5; // Speed up
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SpeedY = SpeedZ; // Downward movement negative
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}
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else
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{
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SpeedZ = MAX_SPEED_NEGATIVE; // Enforce speed limit
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SpeedY = SpeedZ;
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}
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}
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break;
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}
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case E_META_RAIL_ASCEND_XM: // ASCEND EAST
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{
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SetRotation(180);
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SetPosY(floor(GetPosY()) + 0.2);
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SpeedZ = 0;
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if (SpeedX >= 0)
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{
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if (SpeedX <= MAX_SPEED)
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{
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SpeedX = SpeedX + 0.5;
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SpeedY = (0 - SpeedX);
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}
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else
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{
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SpeedX = MAX_SPEED;
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SpeedY = (0 - SpeedX);
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}
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}
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else
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{
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SpeedX = SpeedX + 0.4;
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SpeedY = (0 - SpeedX);
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}
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break;
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}
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case E_META_RAIL_ASCEND_XP: // ASCEND WEST
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{
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SetRotation(180);
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SetPosY(floor(GetPosY()) + 0.2);
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SpeedZ = 0;
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if (SpeedX > 0)
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{
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SpeedX = SpeedX - 0.4;
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SpeedY = SpeedX;
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}
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else
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{
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if (SpeedX >= MAX_SPEED_NEGATIVE)
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{
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SpeedX = SpeedX - 0.5;
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SpeedY = SpeedX;
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}
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else
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{
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SpeedX = MAX_SPEED_NEGATIVE;
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SpeedY = SpeedX;
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}
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}
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break;
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}
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case E_META_RAIL_CURVED_ZM_XM: // Ends pointing NORTH and WEST
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{
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SetRotation(315); // Set correct rotation server side
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SetPosY(floor(GetPosY()) + 0.2); // Levitate dat cart
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if (SpeedZ > 0) // Cart moving south
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{
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SpeedX = (0 - SpeedZ); // Diagonally move southwest (which will make cart hit a southwest rail)
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}
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else if (SpeedX > 0) // Cart moving east
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{
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SpeedZ = (0 - SpeedX); // Diagonally move northeast
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}
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break;
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}
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case E_META_RAIL_CURVED_ZM_XP: // Curved NORTH EAST
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{
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SetRotation(225);
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SetPosY(floor(GetPosY()) + 0.2);
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if (SpeedZ > 0)
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{
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SpeedX = SpeedZ;
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}
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else if (SpeedX < 0)
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{
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SpeedZ = SpeedX;
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}
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break;
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}
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case E_META_RAIL_CURVED_ZP_XM: // Curved SOUTH WEST
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{
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SetRotation(135);
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SetPosY(floor(GetPosY()) + 0.2);
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if (SpeedZ < 0)
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{
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SpeedX = SpeedZ;
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}
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else if (SpeedX > 0)
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{
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SpeedZ = SpeedX;
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}
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break;
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}
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case E_META_RAIL_CURVED_ZP_XP: // Curved SOUTH EAST
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{
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SetRotation(45);
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SetPosY(floor(GetPosY()) + 0.2);
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if (SpeedZ < 0)
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{
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SpeedX = (0 - SpeedZ);
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}
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else if (SpeedX < 0)
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{
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SpeedZ = (0 - SpeedX);
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}
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break;
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}
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default:
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{
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ASSERT(!"Unhandled rail meta!"); // Dun dun DUN!
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break;
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}
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}
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// Set speed to speed variables
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SetSpeedX(SpeedX);
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SetSpeedY(SpeedY);
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SetSpeedZ(SpeedZ);
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// Broadcast position to client
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BroadcastMovementUpdate();
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}
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void cMinecart::DoTakeDamage(TakeDamageInfo & TDI)
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{
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m_LastDamage = TDI.FinalDamage;
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super::DoTakeDamage(TDI);
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m_World->BroadcastEntityMetadata(*this);
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if (GetHealth() <= 0)
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{
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Destroy(true);
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cItems Drops;
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switch (m_Payload)
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{
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case mpNone:
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{
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Drops.push_back(cItem(E_ITEM_MINECART, 1, 0));
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break;
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}
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case mpChest:
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{
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Drops.push_back(cItem(E_ITEM_CHEST_MINECART, 1, 0));
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break;
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}
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case mpFurnace:
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{
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Drops.push_back(cItem(E_ITEM_FURNACE_MINECART, 1, 0));
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break;
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}
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case mpTNT:
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{
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Drops.push_back(cItem(E_ITEM_MINECART_WITH_TNT, 1, 0));
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break;
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}
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case mpHopper:
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{
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Drops.push_back(cItem(E_ITEM_MINECART_WITH_HOPPER, 1, 0));
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break;
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}
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default:
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{
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ASSERT(!"Unhandled minecart type when spawning pickup!");
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return;
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}
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}
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m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ());
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cEmptyMinecart:
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cEmptyMinecart::cEmptyMinecart(double a_X, double a_Y, double a_Z) :
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super(mpNone, a_X, a_Y, a_Z)
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{
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}
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void cEmptyMinecart::OnRightClicked(cPlayer & a_Player)
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{
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if (m_Attachee != NULL)
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{
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if (m_Attachee->GetUniqueID() == a_Player.GetUniqueID())
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{
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// This player is already sitting in, they want out.
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a_Player.Detach();
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return;
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}
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if (m_Attachee->IsPlayer())
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{
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// Another player is already sitting in here, cannot attach
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return;
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}
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// Detach whatever is sitting in this minecart now:
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m_Attachee->Detach();
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}
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// Attach the player to this minecart
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a_Player.AttachTo(this);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cMinecartWithChest:
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cMinecartWithChest::cMinecartWithChest(double a_X, double a_Y, double a_Z) :
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super(mpChest, a_X, a_Y, a_Z)
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{
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}
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void cMinecartWithChest::SetSlot(int a_Idx, const cItem & a_Item)
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{
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ASSERT((a_Idx >= 0) && (a_Idx < ARRAYCOUNT(m_Items)));
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m_Items[a_Idx] = a_Item;
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}
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void cMinecartWithChest::OnRightClicked(cPlayer & a_Player)
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{
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// Show the chest UI window to the player
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// TODO
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cMinecartWithFurnace:
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cMinecartWithFurnace::cMinecartWithFurnace(double a_X, double a_Y, double a_Z) :
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super(mpFurnace, a_X, a_Y, a_Z),
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m_IsFueled(false)
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{
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}
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void cMinecartWithFurnace::OnRightClicked(cPlayer & a_Player)
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{
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if (a_Player.GetEquippedItem().m_ItemType == E_ITEM_COAL)
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{
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if (!a_Player.IsGameModeCreative())
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{
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a_Player.GetInventory().RemoveOneEquippedItem();
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}
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m_IsFueled = true;
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m_World->BroadcastEntityMetadata(*this);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cMinecartWithTNT:
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cMinecartWithTNT::cMinecartWithTNT(double a_X, double a_Y, double a_Z) :
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super(mpTNT, a_X, a_Y, a_Z)
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{
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}
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// TODO: Make it activate when passing over activator rail
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cMinecartWithHopper:
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cMinecartWithHopper::cMinecartWithHopper(double a_X, double a_Y, double a_Z) :
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super(mpHopper, a_X, a_Y, a_Z)
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{
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}
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// TODO: Make it suck up blocks and travel further than any other cart and physics and put and take blocks
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// AND AVARYTHING!!
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