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-rw-r--r--source/Entities/Entity.h6
-rw-r--r--source/Entities/Minecart.cpp197
2 files changed, 199 insertions, 4 deletions
diff --git a/source/Entities/Entity.h b/source/Entities/Entity.h
index 820405cb9..7ae70b8cf 100644
--- a/source/Entities/Entity.h
+++ b/source/Entities/Entity.h
@@ -351,6 +351,9 @@ protected:
bool m_bOnGround;
float m_Gravity;
+
+ // Measured in Kilograms (Kg)
+ double m_Mass;
// Last Position.
double m_LastPosX, m_LastPosY, m_LastPosZ;
@@ -399,9 +402,6 @@ private:
// Measured in meter / second
Vector3d m_WaterSpeed;
- // Measured in Kilograms (Kg)
- double m_Mass;
-
/// Width of the entity, in the XZ plane. Since entities are represented as cylinders, this is more of a diameter.
double m_Width;
diff --git a/source/Entities/Minecart.cpp b/source/Entities/Minecart.cpp
index 3e6069237..20811580a 100644
--- a/source/Entities/Minecart.cpp
+++ b/source/Entities/Minecart.cpp
@@ -2,6 +2,7 @@
// Minecart.cpp
// Implements the cMinecart class representing a minecart in the world
+// Indiana Jones!
#include "Globals.h"
#include "Minecart.h"
@@ -17,6 +18,7 @@ cMinecart::cMinecart(ePayload a_Payload, double a_X, double a_Y, double a_Z) :
super(etMinecart, a_X, a_Y, a_Z, 0.98, 0.7),
m_Payload(a_Payload)
{
+ m_Mass = 20.f;
}
@@ -59,9 +61,202 @@ void cMinecart::SpawnOn(cClientHandle & a_ClientHandle)
+enum ENUM_RAIL_DIRECTIONS
+{
+ E_RAIL_NORTH_SOUTH = 0,
+ E_RAIL_EAST_WEST = 1,
+ E_RAIL_ASCEND_EAST = 2,
+ E_RAIL_ASCEND_WEST = 3,
+ E_RAIL_ASCEND_NORTH = 4,
+ E_RAIL_ASCEND_SOUTH = 5,
+ E_RAIL_CURVED_SOUTH_EAST = 6,
+ E_RAIL_CURVED_SOUTH_WEST = 7,
+ E_RAIL_CURVED_NORTH_WEST = 8,
+ E_RAIL_CURVED_NORTH_EAST = 9,
+} ;
+
+
+
+
+
void cMinecart::Tick(float a_Dt, cChunk & a_Chunk)
{
- // TODO: the physics
+ /*
+ NOTE: Please bear in mind that taking away from negatives make them even more negative,
+ adding to negatives make them positive, etc. Also remember that - North is -Z, South +Z, West -X, and East +Z
+ */
+
+ super::Tick(a_Dt, a_Chunk);
+
+ BLOCKTYPE BelowType;
+ NIBBLETYPE BelowMeta;
+ double SpeedX = GetSpeedX(), SpeedY = GetSpeedY(), SpeedZ = GetSpeedZ(); // Get current speed
+
+ // Get block type & meta below the cart
+ GetWorld()->GetBlockTypeMeta(floor(GetPosX()), floor(GetPosY() -1 ), floor(GetPosZ()), BelowType, BelowMeta);
+
+ if ((BelowType == E_BLOCK_RAIL) || (BelowType == E_BLOCK_DETECTOR_RAIL) || (BelowType == E_BLOCK_ACTIVATOR_RAIL))
+ {
+ switch (BelowMeta)
+ {
+
+ case E_RAIL_NORTH_SOUTH:
+ {
+ SpeedY = 0; // Don't move vertically as on ground
+
+ // Set Y as current Y rounded up to bypass friction
+ // TODO: this causes positioning mismatches on the client, but Entity physics insists on friction!
+ SetPosY(ceil(GetPosY()) + 0.05);
+
+ if (SpeedZ != 0) // Don't do anything if cart is stationary
+ {
+ if (SpeedZ > 0)
+ {
+ // Going SOUTH, slow down
+ SpeedZ = SpeedZ - 0.05;
+ }
+ else
+ {
+ // Going NORTH, slow down
+ SpeedZ = SpeedZ + 0.05;
+ }
+ }
+ break;
+ }
+
+ case E_RAIL_EAST_WEST:
+ {
+ SpeedY = 0;
+ SetPosY(ceil(GetPosY()) + 0.05);
+
+ if (SpeedX != 0)
+ {
+ if (SpeedX > 0)
+ {
+ SpeedX = SpeedX - 0.05;
+ }
+ else
+ {
+ SpeedX = SpeedX + 0.05;
+ }
+ }
+ break;
+ }
+
+ case E_RAIL_ASCEND_NORTH:
+ {
+ if (SpeedZ >= 0)
+ {
+ // SpeedZ POSITIVE, going SOUTH
+ if (SpeedZ <= 6) // Speed limit of 6 SOUTH (m/s??)
+ {
+ SpeedZ = SpeedZ + 1; // Speed up
+ SpeedY = (0 - SpeedZ); // Downward movement is negative (0 minus positive numbers is negative)
+ }
+ else
+ {
+ SpeedZ = 6; // Enforce speed limit
+ SpeedY = (0 - SpeedZ);
+ }
+ }
+ else
+ {
+ // SpeedZ NEGATIVE, going NORTH
+ SpeedZ = SpeedZ + 0.1; // Slow down
+ SpeedY = (0 - SpeedZ); // Upward movement is positive (0 minus negative number is positive number)
+ }
+ break;
+ }
+
+ case E_RAIL_ASCEND_SOUTH:
+ {
+ if (SpeedX > 0)
+ {
+ // SpeedZ POSITIVE, going SOUTH
+ SpeedZ = SpeedZ - 0.1; // Slow down
+ SpeedY = SpeedZ; // Upward movement positive
+ }
+ else
+ {
+ if (SpeedZ >= -6) // Speed limit of 6 WEST (m/s??)
+ {
+ // SpeedZ NEGATIVE, going NORTH
+ SpeedZ = SpeedZ - 1; // Speed up
+ SpeedY = SpeedZ; // Downward movement negative
+ }
+ else
+ {
+ SpeedZ = 6; // Enforce speed limit
+ SpeedY = SpeedZ;
+ }
+ }
+ break;
+ }
+
+ case E_RAIL_ASCEND_WEST:
+ {
+ if (SpeedX >= 0)
+ {
+ if (SpeedX <= 6)
+ {
+ SpeedX = SpeedX + 1;
+ SpeedY = (0 - SpeedX);
+ }
+ else
+ {
+ SpeedX = 6;
+ SpeedY = (0 - SpeedX);
+ }
+ }
+ else
+ {
+ SpeedX = SpeedX + 0.1;
+ SpeedY = (0 - SpeedX);
+ }
+ break;
+ }
+
+ case E_RAIL_ASCEND_EAST:
+ {
+ if (SpeedX > 0)
+ {
+ SpeedX = SpeedX - 0.1;
+ SpeedY = SpeedX;
+ }
+ else
+ {
+ if (SpeedX >= -6)
+ {
+ SpeedX = SpeedX - 1;
+ SpeedY = SpeedX;
+ }
+ else
+ {
+ SpeedX = -6;
+ SpeedY = SpeedX;
+ }
+ }
+ break;
+ }
+
+ default:
+ {
+ ASSERT(!"Unhandled rail meta!");
+ break;
+ }
+
+ }
+ }
+
+ // Set speed to speed variables
+ SetSpeedX(SpeedX);
+ SetSpeedY(SpeedY);
+ SetSpeedZ(SpeedZ);
+
+ // Pass to physics handlers in Entity.cpp and broadcast position to client
+ HandlePhysics(a_Dt, a_Chunk);
+ BroadcastMovementUpdate();
+
}