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	Advtrains mod for minetest.	orwell

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path: root/advtrains_signals_ks/textures/advtrains_signals_ks_ltm_shuntd.png

	Commit message (Expand)	Author	Age
*	Shunt signals (not exactly Ks), along with fixes in other components that tho...	orwell96	2018-12-08

generated by cgit v1.2.3 (git 2.39.1) at 2025-01-03 16:06:43 +0000

-- occupation.lua
--[[
Collects and manages positions where trains occupy and/or reserve/require space
THIS SECTION ABOVE IS OUTDATED, look below

Zone diagram of a train:
              |___| |___| --> Direction of travel
              oo oo+oo oo
=|=======|===|===========|===|=======|===================|========|===
 |SafetyB|CpB|   Train   |CpF|SafetyF|        Brake      |Aware   |
[1]     [2] [3]         [4] [5]     [6]                 [7]      [8]

ID|Name   |Desc
 0 Free    Zone that was occupied before, which has now been left
 1 Train   Zone where the train actually is.
 2 SafetyB Safety zone behind the train. extends 4m
 3 SafetyF Safety zone in front of the train. extends 4m
			If a train is about to enter this zone, immediately brake it down to 2
 4 CpB     Backside coupling zone. If the coupling zones of 2 trains overlap, they can be coupled
 5 CpF     Frontside coupling zone
 6 Brake   Brake distance of the train. Extends to the point ~5 nodes in front
			of the point where the train would stop if it would regularily brake now.
 7 Aware   Awareness zone. Extends 10-20 nodes beyond the Brake zone
			Whenever any of the non-aware zones of other trains are detected here, the train will start to brake.
			
Table format:
occ[y][x][z] = {
	[1] = train 1 id
	[2] = train 1 ZoneID
//	[3] = entry seqnum*
	...
	[2n-1] = train n id
	[2n  ] = train n ZoneID
//	[3n-2] = train n id
//	[3n-1] = train n ZoneID
//	[3n  ] = entry seqnum*
}
occ_chg[n] = {
	pos = vector,
	train_id,