peterwolf’s Splinecart

Splinecart

Splinecart adds smooth, realistically curved railway tracks (composite curves / splines) to Minecraft. Minecarts travel on them without jerking, with full banking and speed physics.

Main elements and mechanics

1. Track Ties

• Wooden (Wood Track Ties), Steel (Steel Track Ties), and Classic:
• Can be placed on blocks and in mid-air.
• Automatic alignment to look direction: floor (down), wall (forward), ceiling (up).
• Empty-hand click rotates the tie.
• Regular ties act as detector rails (emit Redstone signal 15 while a minecart passes).
• Steel ties generate a third powered rail plus support pillars; wooden ties create wooden beams and posts.

2. Connecting tracks and variants

• The Track item joins two ties into a smooth path.
• Regular Track: standard smooth riding and corner smoothing.
• Chain Drive Track: pulls the minecart at constant speed uphill (ideal for roller coasters).
• Magnetic Track: when powered by Redstone it accelerates sharply; when unpowered it brakes the minecart to a stop even on steep slopes.
• Seamless transition with vanilla tracks: a minecart smoothly enters from splines onto regular rails and vice versa without losing momentum or camera rotation.

3. Turnouts / Switches

• Two tracks can leave or enter a single tie at the same time.
• The tie automatically becomes a Redstone-controlled switch:
• State 0 (no signal): minecart follows the main track (1st exit).
• State > 0 (Redstone powered): minecart immediately turns onto the alternate track (2nd exit).
• Detector-rail function is disabled on a switch — lever/dust state changes take effect instantly, even with a whole train of minecarts following one another.

Commands (/splinecart)

| Command | Effect |
|—|—|
| /splinecart banking <on \| off \| toggle> | Enables/disables track and minecart banking on curves. |
| /splinecart supports <none \| wood \| metal \| steel \| auto> | Sets the style of supports and pillars built under new tracks. |
| /splinecart build line <x1 y1 z1> <x2 y2 z2> [type] [supports] [banking] | Automatically places and connects a straight track segment between coordinates. |
| /splinecart build path <pos1> <pos2> ... [type] [supports] [banking] | Builds a continuous multi-point route through the given coordinates. |
| /splinecart connect <x1 y1 z1> <x2 y2 z2> [type] [supports] [banking] | Connects two existing ties with the specified track type. |

(Available types in commands: default, chain_drive, magnetic)

All four player-obtainable items have shaped crafting recipes in Survival. The Track Follower is a hidden entity spawned by tracks and is not crafted.

Track Ties
Description: Interact to rotate when placed.

Unlocks when you pick up a Stick or any Wooden Slab.

Crafting (makes 8):
[Wooden Slab] [Wooden Slab]
[Wooden Slab] [Stick] [Wooden Slab]
[Wooden Slab] [Wooden Slab]

Any wooden slab works in every slot marked Wooden Slab.

Track
Description: Links two Track Ties blocks together.

Unlocks when you pick up a Rail or Iron Block.

Crafting (makes 4):
[Iron Block]
[Rail]
[Iron Block]

Chain Drive Track
Description: Track variant that pulls minecarts.

Unlocks when you pick up an Activator Rail, Chain, or Iron Block.

Crafting (makes 4):
[Iron Block]
[Chain] [Activator Rail] [Chain]
[Iron Block]

Magnetic Track
Description: Track variant that accelerates or slows minecarts.

Unlocks when you pick up a Powered Rail, Iron Block, or Copper Block.

Crafting (makes 4):
[Iron Block]
[Copper Block] [Powered Rail] [Copper Block]
[Iron Block]

The magnetic track’s strength follows the redstone signal powering its Track Ties block.