void cMonster::MoveToWayPoint(cChunk & a_Chunk)
{
if ((m_NextWayPointPosition - GetPosition()).SqrLength() < WAYPOINT_RADIUS * WAYPOINT_RADIUS)
{
return;
}
if (m_JumpCoolDown == 0)
{
if (DoesPosYRequireJump(FloorC(m_NextWayPointPosition.y)))
{
if (((IsOnGround()) && (GetSpeed().SqrLength() == 0.0f)) ||
(IsSwimming()))
{
m_bOnGround = false;
m_JumpCoolDown = 20;
// TODO: Change to AddSpeedY once collision detection is fixed - currently, mobs will go into blocks attempting to jump without a teleport
AddPosY(1.6); // Jump!!
SetSpeedX(3.2 * (m_NextWayPointPosition.x - GetPosition().x)); // Move forward in a preset speed.
SetSpeedZ(3.2 * (m_NextWayPointPosition.z - GetPosition().z)); // The numbers were picked based on trial and error and 1.6 and 3.2 are perfect.
}
}
}
else
{
--m_JumpCoolDown;
}
Vector3d Distance = m_NextWayPointPosition - GetPosition();
if ((Distance.x != 0.0f) || (Distance.z != 0.0f))
{
Distance.y = 0;
Distance.Normalize();
if (m_bOnGround)
{
Distance *= 2.5f;
}
else if (IsSwimming())
{
Distance *= 1.3f;
}
else
{
// Don't let the mob move too much if he's falling.
Distance *= 0.25f;
}
// Apply walk speed:
Distance *= m_RelativeWalkSpeed;
/* Reduced default speed.
Close to Vanilla, easier for mobs to follow m_NextWayPointPositions, hence
better pathfinding. */
Distance *= 0.5;
AddSpeedX(Distance.x);
AddSpeedZ(Distance.z);
}
}
bool cMinecart::TestEntityCollision(NIBBLETYPE a_RailMeta)
{
cMinecartCollisionCallback MinecartCollisionCallback(GetPosition(), GetHeight(), GetWidth(), GetUniqueID(), ((m_Attachee == NULL) ? -1 : m_Attachee->GetUniqueID()));
int ChunkX, ChunkZ;
cChunkDef::BlockToChunk(POSX_TOINT, POSZ_TOINT, ChunkX, ChunkZ);
m_World->ForEachEntityInChunk(ChunkX, ChunkZ, MinecartCollisionCallback);
if (!MinecartCollisionCallback.FoundIntersection())
{
return false;
}
switch (a_RailMeta)
{
case E_META_RAIL_ZM_ZP:
{
if (MinecartCollisionCallback.GetCollidedEntityPosition().z >= GetPosZ())
{
if ((-GetSpeedZ() * 0.4) < 0.01)
{
AddSpeedZ(-4);
}
else
{
SetSpeedZ(-GetSpeedZ() * 0.4);
}
}
else
{
if ((GetSpeedZ() * 0.4) < 0.01)
{
AddSpeedZ(4);
}
else
{
SetSpeedZ(GetSpeedZ() * 0.4);
}
}
return true;
}
case E_META_RAIL_XM_XP:
{
if (MinecartCollisionCallback.GetCollidedEntityPosition().x >= GetPosX())
{
if ((-GetSpeedX() * 0.4) < 0.01)
{
AddSpeedX(-4);
}
else
{
SetSpeedX(-GetSpeedX() * 0.4);
}
}
else
{
if ((GetSpeedX() * 0.4) < 0.01)
{
AddSpeedX(4);
}
else
{
SetSpeedX(GetSpeedX() * 0.4);
}
}
return true;
}
case E_META_RAIL_CURVED_ZM_XM:
case E_META_RAIL_CURVED_ZP_XP:
{
Vector3d Distance = MinecartCollisionCallback.GetCollidedEntityPosition() - Vector3d(GetPosX(), 0, GetPosZ());
// Prevent division by small numbers
if (abs(Distance.z) < 0.001)
{
Distance.z = 0.001;
}
/* Check to which side the minecart is to be pushed.
Let's consider a z-x-coordinate system where the minecart is the center (0/0).
The minecart moves along the line x = -z, the perpendicular line to this is x = z.
In order to decide to which side the minecart is to be pushed, it must be checked on what side of the perpendicular line the pushing entity is located. */
if (
((Distance.z > 0) && ((Distance.x / Distance.z) >= 1)) ||
((Distance.z < 0) && ((Distance.x / Distance.z) <= 1))
)
{
// Moving -X +Z
if ((-GetSpeedX() * 0.4 / sqrt(2.0)) < 0.01)
{
// ~ SpeedX >= 0 Immobile or not moving in the "right" direction. Give it a bump!
AddSpeedX(-4 / sqrt(2.0));
AddSpeedZ(4 / sqrt(2.0));
}
else
{
// ~ SpeedX < 0 Moving in the "right" direction. Only accelerate it a bit.
SetSpeedX(GetSpeedX() * 0.4 / sqrt(2.0));
SetSpeedZ(GetSpeedZ() * 0.4 / sqrt(2.0));
}
}
else if ((GetSpeedX() * 0.4 / sqrt(2.0)) < 0.01)
{
// Moving +X -Z
// ~ SpeedX <= 0 Immobile or not moving in the "right" direction
AddSpeedX(4 / sqrt(2.0));
AddSpeedZ(-4 / sqrt(2.0));
}
else
{
// ~ SpeedX > 0 Moving in the "right" direction
SetSpeedX(GetSpeedX() * 0.4 / sqrt(2.0));
SetSpeedZ(GetSpeedZ() * 0.4 / sqrt(2.0));
}
break;
}
case E_META_RAIL_CURVED_ZM_XP:
case E_META_RAIL_CURVED_ZP_XM:
{
Vector3d Distance = MinecartCollisionCallback.GetCollidedEntityPosition() - Vector3d(GetPosX(), 0, GetPosZ());
// Prevent division by small numbers
if (abs(Distance.z) < 0.001)
{
Distance.z = 0.001;
}
/* Check to which side the minecart is to be pushed.
Let's consider a z-x-coordinate system where the minecart is the center (0/0).
The minecart moves along the line x = z, the perpendicular line to this is x = -z.
In order to decide to which side the minecart is to be pushed, it must be checked on what side of the perpendicular line the pushing entity is located. */
if (
((Distance.z > 0) && ((Distance.x / Distance.z) <= -1)) ||
((Distance.z < 0) && ((Distance.x / Distance.z) >= -1))
)
{
// Moving +X +Z
if ((GetSpeedX() * 0.4) < 0.01)
{
// ~ SpeedX <= 0 Immobile or not moving in the "right" direction
AddSpeedX(4 / sqrt(2.0));
AddSpeedZ(4 / sqrt(2.0));
}
else
{
// ~ SpeedX > 0 Moving in the "right" direction
SetSpeedX(GetSpeedX() * 0.4 / sqrt(2.0));
SetSpeedZ(GetSpeedZ() * 0.4 / sqrt(2.0));
}
}
else if ((-GetSpeedX() * 0.4) < 0.01)
{
// Moving -X -Z
// ~ SpeedX >= 0 Immobile or not moving in the "right" direction
AddSpeedX(-4 / sqrt(2.0));
AddSpeedZ(-4 / sqrt(2.0));
}
else
{
// ~ SpeedX < 0 Moving in the "right" direction
SetSpeedX(GetSpeedX() * 0.4 / sqrt(2.0));
SetSpeedZ(GetSpeedZ() * 0.4 / sqrt(2.0));
}
break;
}
default:
break;
}
return false;
}
void cMinecart::HandlePoweredRailPhysics(NIBBLETYPE a_RailMeta)
{
// Initialise to 'slow down' values
int AccelDecelSpeed = -2;
int AccelDecelNegSpeed = 2;
if ((a_RailMeta & 0x8) == 0x8)
{
// Rail powered - set variables to 'speed up' values
AccelDecelSpeed = 1;
AccelDecelNegSpeed = -1;
}
switch (a_RailMeta & 0x07)
{
case E_META_RAIL_ZM_ZP: // NORTHSOUTH
{
SetYaw(270);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
SetSpeedX(0);
bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
if (EntCol || BlckCol) return;
if (GetSpeedZ() != 0)
{
if (GetSpeedZ() > 0)
{
AddSpeedZ(AccelDecelSpeed);
}
else
{
AddSpeedZ(AccelDecelNegSpeed);
}
}
break;
}
case E_META_RAIL_XM_XP: // EASTWEST
{
SetYaw(180);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
SetSpeedZ(0);
bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
if (EntCol || BlckCol) return;
if (GetSpeedX() != 0)
{
if (GetSpeedX() > 0)
{
AddSpeedX(AccelDecelSpeed);
}
else
{
AddSpeedX(AccelDecelNegSpeed);
}
}
break;
}
case E_META_RAIL_ASCEND_XM: // ASCEND EAST
{
SetYaw(180);
SetSpeedZ(0);
if (GetSpeedX() >= 0)
{
if (GetSpeedX() <= MAX_SPEED)
{
AddSpeedX(AccelDecelSpeed);
SetSpeedY(-GetSpeedX());
}
}
else
{
AddSpeedX(AccelDecelNegSpeed);
SetSpeedY(-GetSpeedX());
}
break;
}
case E_META_RAIL_ASCEND_XP: // ASCEND WEST
{
SetYaw(180);
SetSpeedZ(0);
if (GetSpeedX() > 0)
{
AddSpeedX(AccelDecelSpeed);
SetSpeedY(GetSpeedX());
}
else
{
if (GetSpeedX() >= MAX_SPEED_NEGATIVE)
{
AddSpeedX(AccelDecelNegSpeed);
SetSpeedY(GetSpeedX());
}
}
break;
}
case E_META_RAIL_ASCEND_ZM: // ASCEND NORTH
{
SetYaw(270);
SetSpeedX(0);
if (GetSpeedZ() >= 0)
{
if (GetSpeedZ() <= MAX_SPEED)
{
AddSpeedZ(AccelDecelSpeed);
SetSpeedY(-GetSpeedZ());
}
}
else
{
AddSpeedZ(AccelDecelNegSpeed);
SetSpeedY(-GetSpeedZ());
}
break;
}
case E_META_RAIL_ASCEND_ZP: // ASCEND SOUTH
{
SetYaw(270);
SetSpeedX(0);
if (GetSpeedZ() > 0)
{
AddSpeedZ(AccelDecelSpeed);
SetSpeedY(GetSpeedZ());
}
else
{
if (GetSpeedZ() >= MAX_SPEED_NEGATIVE)
{
AddSpeedZ(AccelDecelNegSpeed);
SetSpeedY(GetSpeedZ());
}
}
break;
}
default:
ASSERT(!"Unhandled powered rail metadata!");
break;
}
}
void cMinecart::HandleRailPhysics(NIBBLETYPE a_RailMeta, float a_Dt)
{
/*
NOTE: Please bear in mind that taking away from negatives make them even more negative,
adding to negatives make them positive, etc.
*/
switch (a_RailMeta)
{
case E_META_RAIL_ZM_ZP: // NORTHSOUTH
{
SetYaw(270);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0); // Don't move vertically as on ground
SetSpeedX(0); // Correct diagonal movement from curved rails
// Execute both the entity and block collision checks
bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
if (EntCol || BlckCol) return;
if (GetSpeedZ() != 0) // Don't do anything if cart is stationary
{
if (GetSpeedZ() > 0)
{
// Going SOUTH, slow down
AddSpeedZ(-0.1);
}
else
{
// Going NORTH, slow down
AddSpeedZ(0.1);
}
}
break;
}
case E_META_RAIL_XM_XP: // EASTWEST
{
SetYaw(180);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
SetSpeedZ(0);
bool BlckCol = TestBlockCollision(a_RailMeta), EntCol = TestEntityCollision(a_RailMeta);
if (EntCol || BlckCol) return;
if (GetSpeedX() != 0)
{
if (GetSpeedX() > 0)
{
AddSpeedX(-0.1);
}
else
{
AddSpeedX(0.1);
}
}
break;
}
case E_META_RAIL_ASCEND_ZM: // ASCEND NORTH
{
SetYaw(270);
SetSpeedX(0);
if (GetSpeedZ() >= 0)
{
// SpeedZ POSITIVE, going SOUTH
if (GetSpeedZ() <= MAX_SPEED) // Speed limit
{
AddSpeedZ(0.5); // Speed up
SetSpeedY(-GetSpeedZ()); // Downward movement is negative (0 minus positive numbers is negative)
}
}
else
{
// SpeedZ NEGATIVE, going NORTH
AddSpeedZ(1); // Slow down
SetSpeedY(-GetSpeedZ()); // Upward movement is positive (0 minus negative number is positive number)
}
break;
}
case E_META_RAIL_ASCEND_ZP: // ASCEND SOUTH
{
SetYaw(270);
SetSpeedX(0);
if (GetSpeedZ() > 0)
{
// SpeedZ POSITIVE, going SOUTH
AddSpeedZ(-1); // Slow down
SetSpeedY(GetSpeedZ()); // Upward movement positive
}
else
{
if (GetSpeedZ() >= MAX_SPEED_NEGATIVE) // Speed limit
{
// SpeedZ NEGATIVE, going NORTH
AddSpeedZ(-0.5); // Speed up
SetSpeedY(GetSpeedZ()); // Downward movement negative
}
}
break;
}
case E_META_RAIL_ASCEND_XM: // ASCEND EAST
{
SetYaw(180);
SetSpeedZ(0);
if (GetSpeedX() >= 0)
{
if (GetSpeedX() <= MAX_SPEED)
{
AddSpeedX(0.5);
SetSpeedY(-GetSpeedX());
}
}
else
{
AddSpeedX(1);
SetSpeedY(-GetSpeedX());
}
break;
}
case E_META_RAIL_ASCEND_XP: // ASCEND WEST
{
SetYaw(180);
SetSpeedZ(0);
if (GetSpeedX() > 0)
{
AddSpeedX(-1);
SetSpeedY(GetSpeedX());
}
else
{
if (GetSpeedX() >= MAX_SPEED_NEGATIVE)
{
AddSpeedX(-0.5);
SetSpeedY(GetSpeedX());
}
}
break;
}
case E_META_RAIL_CURVED_ZM_XM: // Ends pointing NORTH and WEST
{
SetYaw(315); // Set correct rotation server side
SetPosY(floor(GetPosY()) + 0.55); // Levitate dat cart
SetSpeedY(0);
TestBlockCollision(a_RailMeta);
TestEntityCollision(a_RailMeta);
// SnapToRail handles turning
break;
}
case E_META_RAIL_CURVED_ZM_XP: // Curved NORTH EAST
{
SetYaw(225);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
TestBlockCollision(a_RailMeta);
TestEntityCollision(a_RailMeta);
break;
}
case E_META_RAIL_CURVED_ZP_XM: // Curved SOUTH WEST
{
SetYaw(135);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
TestBlockCollision(a_RailMeta);
TestEntityCollision(a_RailMeta);
break;
}
case E_META_RAIL_CURVED_ZP_XP: // Curved SOUTH EAST
{
SetYaw(45);
SetPosY(floor(GetPosY()) + 0.55);
SetSpeedY(0);
TestBlockCollision(a_RailMeta);
TestEntityCollision(a_RailMeta);
break;
}
default:
{
ASSERT(!"Unhandled rail meta!"); // Dun dun DUN!
break;
}
}
}
void cMonster::Tick(float a_Dt, cChunk & a_Chunk)
{
super::Tick(a_Dt, a_Chunk);
if (m_Health <= 0)
{
// The mob is dead, but we're still animating the "puff" they leave when they die
m_DestroyTimer += a_Dt / 1000;
if (m_DestroyTimer > 1)
{
Destroy(true);
}
return;
}
if ((m_Target != NULL) && m_Target->IsDestroyed())
m_Target = NULL;
// Burning in daylight
HandleDaylightBurning(a_Chunk);
a_Dt /= 1000;
if (m_bMovingToDestination)
{
if (m_bOnGround)
{
if (DoesPosYRequireJump((int)floor(m_Destination.y)))
{
m_bOnGround = false;
// TODO: Change to AddSpeedY once collision detection is fixed - currently, mobs will go into blocks attempting to jump without a teleport
AddPosY(1.2); // Jump!!
}
}
Vector3d Distance = m_Destination - GetPosition();
if (!ReachedDestination() && !ReachedFinalDestination()) // If we haven't reached any sort of destination, move
{
Distance.y = 0;
Distance.Normalize();
if (m_bOnGround)
{
Distance *= 2.5f;
}
else if (IsSwimming())
{
Distance *= 1.3f;
}
else
{
// Don't let the mob move too much if he's falling.
Distance *= 0.25f;
}
// Apply walk speed:
Distance *= m_RelativeWalkSpeed;
AddSpeedX(Distance.x);
AddSpeedZ(Distance.z);
// It's too buggy!
/*
if (m_EMState == ESCAPING)
{
// Runs Faster when escaping :D otherwise they just walk away
SetSpeedX (GetSpeedX() * 2.f);
SetSpeedZ (GetSpeedZ() * 2.f);
}
*/
}
else
{
if (ReachedFinalDestination()) // If we have reached the ultimate, final destination, stop pathfinding and attack if appropriate
{
FinishPathFinding();
}
else
{
TickPathFinding(); // We have reached the next point in our path, calculate another point
}
}
}
SetPitchAndYawFromDestination();
HandleFalling();
switch (m_EMState)
{
case IDLE:
{
// If enemy passive we ignore checks for player visibility
InStateIdle(a_Dt);
break;
}
case CHASING:
{
// If we do not see a player anymore skip chasing action
InStateChasing(a_Dt);
break;
}
case ESCAPING:
{
InStateEscaping(a_Dt);
break;
}
case ATTACKING: break;
} // switch (m_EMState)
BroadcastMovementUpdate();
}
