summaryrefslogtreecommitdiffstats
path: root/src/Entities/ArrowEntity.cpp
blob: 249ff42d0027552de000ecd79038e28c8113c9e9 (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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules

#include "Player.h"
#include "ArrowEntity.h"
#include "../Chunk.h"





cArrowEntity::cArrowEntity(cEntity * a_Creator, Vector3d a_Pos, Vector3d a_Speed):
	super(pkArrow, a_Creator, a_Pos, 0.5, 0.5),
	m_PickupState(psNoPickup),
	m_DamageCoeff(2),
	m_IsCritical(false),
	m_Timer(0),
	m_HitGroundTimer(0),
	m_HasTeleported(false),
	m_bIsCollected(false),
	m_HitBlockPos(Vector3i(0, 0, 0))
{
	SetSpeed(a_Speed);
	SetMass(0.1);
	SetGravity(-20.0f);
	SetAirDrag(0.01f);
	SetYawFromSpeed();
	SetPitchFromSpeed();
	FLOGD("Created arrow {0} with speed {1:.02f} and rot {{{2:.02f}, {3:.02f}}}",
		m_UniqueID, GetSpeed(), GetYaw(), GetPitch()
	);
}





cArrowEntity::cArrowEntity(cPlayer & a_Player, double a_Force) :
	super(pkArrow, &a_Player, a_Player.GetThrowStartPos(), a_Player.GetThrowSpeed(a_Force * 1.5 * 20), 0.5, 0.5),
	m_PickupState(psInSurvivalOrCreative),
	m_DamageCoeff(2),
	m_IsCritical((a_Force >= 1)),
	m_Timer(0),
	m_HitGroundTimer(0),
	m_HasTeleported(false),
	m_bIsCollected(false),
	m_HitBlockPos(0, 0, 0)
{
	if (a_Player.IsGameModeCreative())
	{
		m_PickupState = psInCreative;
	}
	SetGravity(-20.0f);
	SetAirDrag(0.01f);
}





bool cArrowEntity::CanPickup(const cPlayer & a_Player) const
{
	switch (m_PickupState)
	{
		case psNoPickup:             return false;
		case psInSurvivalOrCreative: return (a_Player.IsGameModeSurvival() || a_Player.IsGameModeCreative());
		case psInCreative:           return a_Player.IsGameModeCreative();
	}
	UNREACHABLE("Unsupported arrow pickup state");
}





void cArrowEntity::OnHitSolidBlock(Vector3d a_HitPos, eBlockFace a_HitFace)
{
	Vector3d Hit = a_HitPos;
	Hit += GetSpeed().NormalizeCopy() / 100000;  // Make arrow sink into block a bit so it lodges (TODO: investigate how to stop them going so far so that they become black clientside)

	super::OnHitSolidBlock(Hit, a_HitFace);
	Vector3i BlockHit = Hit.Floor();

	int X = BlockHit.x, Y = BlockHit.y, Z = BlockHit.z;
	m_HitBlockPos = Vector3i(X, Y, Z);

	// Broadcast arrow hit sound
	m_World->BroadcastSoundEffect("entity.arrow.hit", BlockHit, 0.5f, static_cast<float>(0.75 + (static_cast<float>((GetUniqueID() * 23) % 32)) / 64));

	if ((m_World->GetBlock(Hit) == E_BLOCK_TNT) && IsOnFire())
	{
		m_World->SetBlock(X, Y, Z, E_BLOCK_AIR, 0);
		m_World->SpawnPrimedTNT(Vector3d(BlockHit));
	}

}





void cArrowEntity::OnHitEntity(cEntity & a_EntityHit, Vector3d a_HitPos)
{
	super::OnHitEntity(a_EntityHit, a_HitPos);

	int Damage = static_cast<int>(GetSpeed().Length() / 20 * m_DamageCoeff + 0.5);
	if (m_IsCritical)
	{
		Damage += m_World->GetTickRandomNumber(Damage / 2 + 2);
	}

	unsigned int PowerLevel = m_CreatorData.m_Enchantments.GetLevel(cEnchantments::enchPower);
	if (PowerLevel > 0)
	{
		int ExtraDamage = static_cast<int>(ceil(0.25 * (PowerLevel + 1)));
		Damage += ExtraDamage;
	}

	unsigned int PunchLevel = m_CreatorData.m_Enchantments.GetLevel(cEnchantments::enchPunch);
	double KnockbackAmount = 11 + 10 * PunchLevel;
	a_EntityHit.TakeDamage(dtRangedAttack, GetCreatorUniqueID(), Damage, KnockbackAmount);

	if (IsOnFire() && !a_EntityHit.IsInWater())
	{
		a_EntityHit.StartBurning(100);
	}

	// Broadcast successful hit sound
	GetWorld()->BroadcastSoundEffect("entity.arrow.hit", GetPosition(), 0.5, static_cast<float>(0.75 + (static_cast<float>((GetUniqueID() * 23) % 32)) / 64));

	Destroy();
}





void cArrowEntity::CollectedBy(cPlayer & a_Dest)
{
	if (m_IsInGround && !m_bIsCollected && CanPickup(a_Dest))
	{
		// Do not add the arrow to the inventory when the player is in creative:
		if (!a_Dest.IsGameModeCreative())
		{
			int NumAdded = a_Dest.GetInventory().AddItem(E_ITEM_ARROW);
			if (NumAdded == 0)
			{
				// No space in the inventory
				return;
			}
		}

		GetWorld()->BroadcastCollectEntity(*this, a_Dest, 1);
		GetWorld()->BroadcastSoundEffect("entity.item.pickup", GetPosition(), 0.5, static_cast<float>(0.75 + (static_cast<float>((GetUniqueID() * 23) % 32)) / 64));
		m_bIsCollected = true;
	}
}





void cArrowEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
	super::Tick(a_Dt, a_Chunk);
	if (!IsTicking())
	{
		// The base class tick destroyed us
		return;
	}
	m_Timer += a_Dt;

	if (m_bIsCollected)
	{
		if (m_Timer > std::chrono::milliseconds(500))
		{
			Destroy();
			return;
		}
	}
	else if (m_Timer > std::chrono::minutes(5))
	{
		Destroy();
		return;
	}

	if (m_IsInGround)
	{
		if (!m_HasTeleported)  // Sent a teleport already, don't do again
		{
			if (m_HitGroundTimer > std::chrono::milliseconds(500))
			{
				m_World->BroadcastTeleportEntity(*this);
				m_HasTeleported = true;
			}
			else
			{
				m_HitGroundTimer += a_Dt;
			}
		}

		auto relPos = a_Chunk.AbsoluteToRelative(m_HitBlockPos);
		auto chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(relPos);

		if (chunk == nullptr)
		{
			// Inside an unloaded chunk, abort
			return;
		}

		if (chunk->GetBlock(relPos) == E_BLOCK_AIR)  // Block attached to was destroyed?
		{
			m_IsInGround = false;  // Yes, begin simulating physics again
		}
	}
}