commit 9cdc7af61adafc9283ba590282634f5bf5341de8
Author: h-v-smacker <hans-von-smacker+github@gmail.com>
Date:   Sun Sep 23 10:38:30 2018 +0300

    working state

diff --git a/assets/advtrains_granite_locomotive.blend b/assets/advtrains_granite_locomotive.blend
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diff --git a/depends.txt b/depends.txt
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+++ b/depends.txt
@@ -0,0 +1,2 @@
+advtrains
+intllib?
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diff --git a/init.lua b/init.lua
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+++ b/init.lua
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+local S
+if minetest.get_modpath("intllib") then
+    S = intllib.Getter()
+else
+    S = function(s,a,...)a={a,...}return s:gsub("@(%d+)",function(n)return a[tonumber(n)]end)end
+end
+
+advtrains.register_wagon("granite_locomotive", {
+	mesh="advtrains_granite_locomotive.b3d",
+	textures = {"advtrains_granite_locomotive.png"},
+	is_locomotive=true,
+	drives_on={default=true},
+	max_speed=15,
+	seats = {
+		{
+			name = S("Driver Stand (left)"),
+			attach_offset = {x=-4, y=12, z=15},
+			view_offset = {x=0, y=0, z=17},
+			group = "dstand",
+		},
+		{
+			name = S("Trainee Seat (right)"),
+			attach_offset = {x=4, y=12, z=15},
+			view_offset = {x=0, y=0, z=17},
+			group = "tseat",
+		},
+	},
+	seat_groups = {
+		dstand = {
+			name = "Driver Stand",
+			access_to = {"tseat"},
+			driving_ctrl_access = true,
+		},
+		tseat = {
+			name = "Trainee Seat",
+			access_to = {"dstand"},
+			driving_ctrl_access = false,
+		},
+	},
+	assign_to_seat_group = {"dstand", "tseat"},
+	visual_size = {x=1, y=1},
+	wagon_span = 2.8,
+	collisionbox = {-1.75,-0.5,-1.0, 1.75,2.5,1.0},
+	update_animation=function(self, velocity)
+		if self.old_anim_velocity~=advtrains.abs_ceil(velocity) then
+			self.object:set_animation({x=1,y=80}, advtrains.abs_ceil(velocity)*15, 0, true)
+			self.old_anim_velocity=advtrains.abs_ceil(velocity)
+		end
+	end,
+	custom_on_activate = function(self, staticdata_table, dtime_s)
+		minetest.add_particlespawner({
+			amount = 10,
+			time = 0,
+		--  ^ If time is 0 has infinite lifespan and spawns the amount on a per-second base
+			minpos = {x=0, y=2.5, z=-1.2},
+			maxpos = {x=0, y=2.5, z=-1.2},
+			minvel = {x=-0.2, y=1.8, z=-0.2},
+			maxvel = {x=0.2, y=2, z=0.2},
+			minacc = {x=0, y=-0.1, z=0},
+			maxacc = {x=0, y=-0.3, z=0},
+			minexptime = 2,
+			maxexptime = 4,
+			minsize = 1,
+			maxsize = 4,
+		--  ^ The particle's properties are random values in between the bounds:
+		--  ^ minpos/maxpos, minvel/maxvel (velocity), minacc/maxacc (acceleration),
+		--  ^ minsize/maxsize, minexptime/maxexptime (expirationtime)
+			collisiondetection = true,
+		--  ^ collisiondetection: if true uses collision detection
+			vertical = false,
+		--  ^ vertical: if true faces player using y axis only
+			texture = "smoke_puff.png",
+		--  ^ Uses texture (string)
+			attached = self.object,
+		})
+	end,
+	drops={"advtrains:granite_locomotive"},
+      horn_sound = "advtrains_granite_horn",
+}, S("Granite Locomotive"), "advtrains_granite_locomotive_inv.png")
+
+
+minetest.register_craft({
+	output = 'advtrains:granite_locomotive',
+	recipe = {
+		{'default:steelblock', 'default:steelblock', 'default:steelblock'},
+		{'default:glass', 'dye:red', 'dye:white'},
+		{'advtrains:wheel', 'default:steelblock', 'advtrains:wheel'},
+	},
+})
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diff --git a/models/advtrains_granite_locomotive.b3d b/models/advtrains_granite_locomotive.b3d
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diff --git a/sounds/advtrains_granite_horn.1.ogg b/sounds/advtrains_granite_horn.1.ogg
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diff --git a/sounds/advtrains_granite_horn.2.ogg b/sounds/advtrains_granite_horn.2.ogg
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diff --git a/sounds/advtrains_granite_horn.3.ogg b/sounds/advtrains_granite_horn.3.ogg
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diff --git a/textures/advtrains_granite_locomotive.png b/textures/advtrains_granite_locomotive.png
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diff --git a/textures/advtrains_granite_locomotive_inv.png b/textures/advtrains_granite_locomotive_inv.png
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