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// Minecart.h
// Declares the cMinecart class representing a minecart in the world
#pragma once
#include "Entity.h"
inline bool IsBlockRail(BLOCKTYPE a_BlockType)
{
return (
(a_BlockType == E_BLOCK_RAIL) ||
(a_BlockType == E_BLOCK_ACTIVATOR_RAIL) ||
(a_BlockType == E_BLOCK_DETECTOR_RAIL) ||
(a_BlockType == E_BLOCK_POWERED_RAIL)
) ;
}
class cMinecart :
public cEntity
{
typedef cEntity super;
public:
CLASS_PROTODEF(cMinecart);
enum ePayload
{
mpNone, // Empty minecart, ridable by player or mobs
mpChest, // Minecart-with-chest, can store a grid of 3*8 items
mpFurnace, // Minecart-with-furnace, can be powered
mpTNT, // Minecart-with-TNT, can be blown up with activator rail
mpHopper, // Minecart-with-hopper, can be hopper
// TODO: Spawner minecarts, (and possibly any block in a minecart with NBT editing)
} ;
// cEntity overrides:
virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk) override;
virtual void DoTakeDamage(TakeDamageInfo & TDI) override;
virtual void Destroyed() override;
int LastDamage(void) const { return m_LastDamage; }
ePayload GetPayload(void) const { return m_Payload; }
protected:
ePayload m_Payload;
int m_LastDamage;
Vector3i m_DetectorRailPosition;
bool m_bIsOnDetectorRail;
cMinecart(ePayload a_Payload, double a_X, double a_Y, double a_Z);
/** Handles physics on normal rails
For each tick, slow down on flat rails, speed up or slow down on ascending/descending rails (depending on direction), and turn on curved rails
*/
void HandleRailPhysics(NIBBLETYPE a_RailMeta, float a_Dt);
/** Handles powered rail physics
Each tick, speed up or slow down cart, depending on metadata of rail (powered or not)
*/
void HandlePoweredRailPhysics(NIBBLETYPE a_RailMeta);
/** Handles detector rail activation
Activates detector rails when a minecart is on them. Calls HandleRailPhysics() for physics simulations
*/
void HandleDetectorRailPhysics(NIBBLETYPE a_RailMeta, float a_Dt);
/** Snaps a mincecart to a rail's axis, resetting its speed
For curved rails, it changes the cart's direction as well as snapping it to axis */
void SnapToRail(NIBBLETYPE a_RailMeta);
/** Tests if a solid block is in front of a cart, and stops the cart (and returns true) if so; returns false if no obstruction */
bool TestBlockCollision(NIBBLETYPE a_RailMeta);
/** Tests if this mincecart's bounding box is intersecting another entity's bounding box (collision) and pushes mincecart away */
bool TestEntityCollision(NIBBLETYPE a_RailMeta);
} ;
class cEmptyMinecart :
public cMinecart
{
typedef cMinecart super;
public:
CLASS_PROTODEF(cEmptyMinecart);
cEmptyMinecart(double a_X, double a_Y, double a_Z);
// cEntity overrides:
virtual void OnRightClicked(cPlayer & a_Player) override;
} ;
class cMinecartWithChest :
public cMinecart
{
typedef cMinecart super;
public:
CLASS_PROTODEF(cMinecartWithChest);
/// Number of item slots in the chest
static const int NumSlots = 9 * 3;
cMinecartWithChest(double a_X, double a_Y, double a_Z);
const cItem & GetSlot(int a_Idx) const { return m_Items[a_Idx]; }
cItem & GetSlot(int a_Idx) { return m_Items[a_Idx]; }
void SetSlot(int a_Idx, const cItem & a_Item);
protected:
/// The chest contents:
cItem m_Items[NumSlots];
// cEntity overrides:
virtual void OnRightClicked(cPlayer & a_Player) override;
} ;
class cMinecartWithFurnace :
public cMinecart
{
typedef cMinecart super;
public:
CLASS_PROTODEF(cMinecartWithFurnace);
cMinecartWithFurnace(double a_X, double a_Y, double a_Z);
// cEntity overrides:
virtual void OnRightClicked(cPlayer & a_Player) override;
virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
// Set functions.
void SetIsFueled(bool a_IsFueled, int a_FueledTimeLeft = -1) {m_IsFueled = a_IsFueled; m_FueledTimeLeft = a_FueledTimeLeft;}
// Get functions.
int GetFueledTimeLeft(void) const {return m_FueledTimeLeft; }
bool IsFueled (void) const {return m_IsFueled;}
private:
int m_FueledTimeLeft;
bool m_IsFueled;
} ;
class cMinecartWithTNT :
public cMinecart
{
typedef cMinecart super;
public:
CLASS_PROTODEF(cMinecartWithTNT);
cMinecartWithTNT(double a_X, double a_Y, double a_Z);
} ;
class cMinecartWithHopper :
public cMinecart
{
typedef cMinecart super;
public:
CLASS_PROTODEF(cMinecartWithHopper);
cMinecartWithHopper(double a_X, double a_Y, double a_Z);
} ;
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