From 1f26781b6a79135159205231f580beb06e789d4d Mon Sep 17 00:00:00 2001
From: orwell96 <orwell@bleipb.de>
Date: Sun, 7 Jan 2018 20:41:48 +0100
Subject: Change controls for trains (again)

---
 advtrains/trainhud.lua | 74 ++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 65 insertions(+), 9 deletions(-)

(limited to 'advtrains/trainhud.lua')

diff --git a/advtrains/trainhud.lua b/advtrains/trainhud.lua
index 78c7624..9b7b9e8 100644
--- a/advtrains/trainhud.lua
+++ b/advtrains/trainhud.lua
@@ -1,9 +1,11 @@
 --trainhud.lua: holds all the code for train controlling
 
 advtrains.hud = {}
+advtrains.hhud = {}
 
 minetest.register_on_leaveplayer(function(player)
 advtrains.hud[player:get_player_name()] = nil
+advtrains.hhud[player:get_player_name()] = nil
 end)
 
 local mletter={[1]="F", [-1]="R", [0]="N"}
@@ -40,12 +42,23 @@ function advtrains.on_control_change(pc, train, flip)
 		end
 		--shift+use:see wagons.lua
 	else
+		local act=false
 		if pc.up then
-		   train.tarvelocity = math.min(train.tarvelocity + 1, maxspeed)
+		   train.lever=4
+		   act=true
+		end
+		if pc.jump then
+			train.lever = 1
+			act=true
 		end
 		if pc.down then
 			if train.velocity>0 then
-				train.tarvelocity = math.max(train.tarvelocity - 1, 0)
+				if pc.jump then
+					train.lever = 0
+				else
+					train.lever = 2
+				end
+				act=true
 			else
 				train.movedir = -train.movedir
 			end
@@ -64,12 +77,7 @@ function advtrains.on_control_change(pc, train, flip)
 				train.door_open = train.movedir
 			end
 		end
-		if train.brake_hold_state~=2 then
-			train.brake = false
-		end
-		if pc.jump then
-			train.brake = true
-		end
+		train.active_control = act
 		if pc.aux1 then
 			--horn
 		end
@@ -109,6 +117,44 @@ function advtrains.set_trainhud(name, text)
 		hud.oldText=text
 	end
 end
+function advtrains.set_help_hud(name, text)
+	local hud = advtrains.hhud[name]
+	local player=minetest.get_player_by_name(name)
+	if not player then
+	   return
+	end
+	if not hud then
+		hud = {}
+		advtrains.hhud[name] = hud
+		hud.id = player:hud_add({
+			hud_elem_type = "text",
+			name = "ADVTRAINS_HELP",
+			number = 0xFFFFFF,
+			position = {x=1, y=0.3},
+			offset = {x=0, y=0},
+			text = text,
+			scale = {x=200, y=60},
+			alignment = {x=1, y=0},
+		})
+		hud.oldText=text
+		return
+	elseif hud.oldText ~= text then
+		player:hud_change(hud.id, "text", text)
+		hud.oldText=text
+	end
+end
+
+--train.lever:
+--Speed control lever in train, for new train control system.
+--[[
+Value	Disp	Control	Meaning
+0		BB		S+Space	Emergency Brake
+1		B		Space	Normal Brake
+2		-		S		Roll
+3		o		<none>	Stay at speed
+4		+		W		Accelerate
+]]
+
 function advtrains.hud_train_format(train, flip)
 	local fct=flip and -1 or 1
 	if not train then return "" end
@@ -118,9 +164,19 @@ function advtrains.hud_train_format(train, flip)
 	local tvel=advtrains.abs_ceil(train.tarvelocity)
 	local vel_kmh=advtrains.abs_ceil(advtrains.ms_to_kmh(train.velocity))
 	local tvel_kmh=advtrains.abs_ceil(advtrains.ms_to_kmh(train.tarvelocity))
+	
+	local levers = "B - o +"
+	local tlev=train.lever
+	if train.velocity==0 and not train.active_control then tlev=1 end
+	if tlev == 0 then levers = ">BB< - o +" end
+	if tlev == 1 then levers = ">B< - o +" end
+	if tlev == 2 then levers = "B >-< o +" end
+	if tlev == 3 then levers = "B - >o< +" end
+	if tlev == 4 then levers = "B - o >+<" end
+	
 	local topLine, firstLine, secondLine
 	
-	topLine="  ["..mletter[fct*train.movedir].."]  "..doorstr[(train.door_open or 0) * train.movedir].."  "..(train.brake and "="..( train.brake_hold_state==2 and "^" or "" ).."B=" or "")
+	topLine="  ["..mletter[fct*train.movedir].."]  {"..levers.."} "..doorstr[(train.door_open or 0) * train.movedir]
 	firstLine=attrans("Speed:").." |"..string.rep("+", vel)..string.rep("_", max-vel).."> "..vel_kmh.." km/h"
 	secondLine=attrans("Target:").." |"..string.rep("+", tvel)..string.rep("_", max-tvel).."> "..tvel_kmh.." km/h"
 	
-- 
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