1 files changed, 126 insertions, 0 deletions
diff --git a/advtrains/trainhud.lua b/advtrains/trainhud.lua
new file mode 100644
index 0000000..591881a
--- /dev/null
+++ b/advtrains/trainhud.lua
@@ -0,0 +1,126 @@
+--trainhud.lua: holds all the code for train controlling
+
+advtrains.hud = {}
+
+minetest.register_on_leaveplayer(function(player)
+advtrains.hud[player:get_player_name()] = nil
+end)
+
+local mletter={[1]="F", [-1]="R", [0]="N"}
+local doorstr={[-1]="|<>| >|<", [0]=">|< >|<", [1]=">|< |<>|"}
+
+function advtrains.on_control_change(pc, train, flip)
+   	local maxspeed = train.max_speed or 10
+	if pc.sneak then
+		if pc.up then
+			train.tarvelocity = maxspeed
+		end
+		if pc.down then
+			train.tarvelocity = 0
+		end
+		if pc.left then
+			train.tarvelocity = 4
+		end
+		if pc.right then
+			train.tarvelocity = 8
+		end
+		if pc.jump then
+			train.brake = true
+			--0: released, 1: brake and pressed, 2: released and brake, 3: pressed and brake
+			if not train.brake_hold_state or train.brake_hold_state==0 then
+				train.brake_hold_state = 1
+			elseif train.brake_hold_state==2 then
+				train.brake_hold_state = 3
+			end
+		elseif train.brake_hold_state==1 then
+			train.brake_hold_state = 2
+		elseif train.brake_hold_state==3 then
+			train.brake = false
+			train.brake_hold_state = 0
+		end
+		--shift+use:see wagons.lua
+	else
+		if pc.up then
+		   train.tarvelocity = math.min(train.tarvelocity + 1, maxspeed)
+		end
+		if pc.down then
+			if train.velocity>0 then
+				train.tarvelocity = math.max(train.tarvelocity - 1, 0)
+			else
+				train.movedir = -train.movedir
+			end
+		end
+		if pc.left then
+			if train.door_open ~= 0 then
+				train.door_open = 0
+			else
+				train.door_open = -train.movedir
+			end
+		end
+		if pc.right then
+			if train.door_open ~= 0 then
+				train.door_open = 0
+			else
+				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
+		if pc.aux1 then
+			--horn
+		end
+	end
+end
+function advtrains.update_driver_hud(pname, train, flip)
+	local inside=train.text_inside or ""
+	advtrains.set_trainhud(pname, inside.."\n"..advtrains.hud_train_format(train, flip))
+end
+function advtrains.clear_driver_hud(pname)
+	advtrains.set_trainhud(pname, "")
+end
+
+function advtrains.set_trainhud(name, text)
+	local hud = advtrains.hud[name]
+	local player=minetest.get_player_by_name(name)
+	if not player then
+	   return
+	end
+	if not hud then
+		hud = {}
+		advtrains.hud[name] = hud
+		hud.id = player:hud_add({
+			hud_elem_type = "text",
+			name = "ADVTRAINS",
+			number = 0xFFFFFF,
+			position = {x=0.5, y=0.7},
+			offset = {x=0, y=0},
+			text = text,
+			scale = {x=200, y=60},
+			alignment = {x=0, y=0},
+		})
+		hud.oldText=text
+		return
+	elseif hud.oldText ~= text then
+		player:hud_change(hud.id, "text", text)
+		hud.oldText=text
+	end
+end
+function advtrains.hud_train_format(train, flip)
+	local fct=flip and -1 or 1
+	if not train then return "" end
+	
+	local max=train.max_speed or 10
+	local vel=advtrains.abs_ceil(train.velocity)
+	local tvel=advtrains.abs_ceil(train.tarvelocity)
+	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 "")
+	firstLine=attrans("Speed:").." |"..string.rep("+", vel)..string.rep("_", max-vel)..">"
+	secondLine=attrans("Target:").." |"..string.rep("+", tvel)..string.rep("_", max-tvel)..">"
+	
+	return topLine.."\n"..firstLine.."\n"..secondLine
+end