flewkey/cuberite-2a
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Implemented basic physics for projectiles.

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This commit is contained in:
madmaxoft
2013-08-27 19:57:37 +02:00
parent f260e9211f
commit 6677a5e8ca
7 changed files with 157 additions and 36 deletions
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147
source/Entities/ProjectileEntity.cpp
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@@ -7,6 +7,57 @@
#include "ProjectileEntity.h"
#include "../ClientHandle.h"
#include "Player.h"
#include "../LineBlockTracer.h"
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cProjectileTracerCallback:
class cProjectileTracerCallback :
public cBlockTracer::cCallbacks
{
public:
cProjectileTracerCallback(cProjectileEntity * a_Projectile) :
m_Projectile(a_Projectile)
{
}
protected:
cProjectileEntity * m_Projectile;
virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, char a_EntryFace) override
{
if (g_BlockIsSolid[a_BlockType])
{
// The projectile hit a solid block
m_Projectile->OnHitSolidBlock(a_BlockX, a_BlockY, a_BlockZ, a_EntryFace);
return true;
}
// Convey some special effects from special blocks:
switch (a_BlockType)
{
case E_BLOCK_LAVA:
case E_BLOCK_STATIONARY_LAVA:
{
m_Projectile->StartBurning(30);
break;
}
case E_BLOCK_WATER:
case E_BLOCK_STATIONARY_WATER:
{
m_Projectile->StopBurning();
break;
}
} // switch (a_BlockType)
// Continue tracing
return false;
}
} ;
@@ -18,7 +69,8 @@
cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, double a_X, double a_Y, double a_Z, double a_Width, double a_Height) :
super(etProjectile, a_X, a_Y, a_Z, a_Width, a_Height),
m_ProjectileKind(a_Kind),
m_Creator(a_Creator)
m_Creator(a_Creator),
m_IsInGround(false)
{
}
@@ -29,7 +81,8 @@ cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, double a
cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, const Vector3d & a_Pos, const Vector3d & a_Speed, double a_Width, double a_Height) :
super(etProjectile, a_Pos.x, a_Pos.y, a_Pos.z, a_Width, a_Height),
m_ProjectileKind(a_Kind),
m_Creator(a_Creator)
m_Creator(a_Creator),
m_IsInGround(false)
{
SetSpeed(a_Speed);
}
@@ -60,6 +113,35 @@ cProjectileEntity * cProjectileEntity::Create(eKind a_Kind, cEntity * a_Creator,
void cProjectileEntity::OnHitSolidBlock(int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace)
{
// TODO: Set proper position based on what face was hit
switch (a_BlockFace)
{
case BLOCK_FACE_TOP: SetPosition(0.5 + a_BlockX, 1.0 + a_BlockY, 0.5 + a_BlockZ); break;
case BLOCK_FACE_BOTTOM: SetPosition(0.5 + a_BlockX, a_BlockY, 0.5 + a_BlockZ); break;
case BLOCK_FACE_EAST: SetPosition( a_BlockX, 0.5 + a_BlockY, 0.5 + a_BlockZ); break;
case BLOCK_FACE_WEST: SetPosition(1.0 + a_BlockX, 0.5 + a_BlockY, 0.5 + a_BlockZ); break;
case BLOCK_FACE_NORTH: SetPosition(0.5 + a_BlockX, 0.5 + a_BlockY, 1.0 + a_BlockZ); break;
case BLOCK_FACE_SOUTH: SetPosition(0.5 + a_BlockX, 0.5 + a_BlockY, a_BlockZ); break;
case BLOCK_FACE_NONE: SetPosition(0.5 + a_BlockX, 0.5 + a_BlockY, 0.5 + a_BlockZ); break;
}
SetSpeed(0, 0, 0);
// DEBUG:
LOGD("Projectile %d: pos {%.02f, %.02f, %.02f}, hit solid block at face %d",
m_UniqueID,
GetPosX(), GetPosY(), GetPosZ(),
a_BlockFace
);
m_IsInGround = true;
}
AString cProjectileEntity::GetMCAClassName(void) const
{
switch (m_ProjectileKind)
@@ -83,6 +165,51 @@ AString cProjectileEntity::GetMCAClassName(void) const
void cProjectileEntity::Tick(float a_Dt, cChunk & a_Chunk)
{
super::Tick(a_Dt, a_Chunk);
BroadcastMovementUpdate();
}
void cProjectileEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
{
if (m_IsInGround)
{
// Already-grounded projectiles don't move at all
return;
}
Vector3d PerTickSpeed = GetSpeed() / 20;
Vector3d Pos = GetPosition();
// Trace the tick's worth of movement as a line:
Vector3d NextPos = Pos + PerTickSpeed;
cProjectileTracerCallback TracerCallback(this);
if (cLineBlockTracer::Trace(*m_World, TracerCallback, Pos, NextPos))
{
// Nothing in the way, update the position
SetPosition(NextPos);
}
// Add gravity effect to the vertical speed component:
SetSpeedY(GetSpeedY() + m_Gravity / 20);
// DEBUG:
LOGD("Arrow %d: pos {%.02f, %.02f, %.02f}, speed {%.02f, %.02f, %.02f}",
m_UniqueID,
GetPosX(), GetPosY(), GetPosZ(),
GetSpeedX(), GetSpeedY(), GetSpeedZ()
);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cArrowEntity:
@@ -118,22 +245,6 @@ bool cArrowEntity::CanPickup(const cPlayer & a_Player) const
void cArrowEntity::Tick(float a_Dt, cChunk & a_Chunk)
{
super::Tick(a_Dt, a_Chunk);
// DEBUG:
LOGD("Arrow %d: pos {%.02f, %.02f, %.02f}, speed {%.02f, %.02f, %.02f}",
m_UniqueID,
GetPosX(), GetPosY(), GetPosZ(),
GetSpeedX(), GetSpeedY(), GetSpeedZ()
);
}
void cArrowEntity::SpawnOn(cClientHandle & a_Client)
{
a_Client.SendSpawnObject(*this, pkArrow, 0, 0, 0);