summaryrefslogtreecommitdiffstats
path: root/src/Entities/Minecart.h
blob: feb700b711d7bc89b02c95ff09ed66b9bb6615c4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190

// 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 minecart to a rail's axis, resetting its speed */
	void SnapToRail(NIBBLETYPE a_RailMeta);
	/** Tests is 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);

} ;





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;
	bool IsFueled (void) const { return m_IsFueled; }

private:

	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);
} ;