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advtrains.hud = {}
minetest.register_on_leaveplayer(function(player)
advtrains.hud[player:get_player_name()] = nil
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=1
if flip then fct=-1 end
if not train then return "" end
local max=advtrains.all_traintypes[train.traintype].max_speed or 10
local vel=advtrains.abs_ceil(train.velocity)*fct
local tvel=advtrains.abs_ceil(train.tarvelocity)*fct
local firstLine, secondLine
if vel<0 then
firstLine="Speed: <"..string.rep("_", vel+max)..string.rep("+", -vel).."|"..string.rep("_", max)..">"
else
firstLine="Speed: <"..string.rep("_", max).."|"..string.rep("+", vel)..string.rep("_", max-vel)..">"
end
if tvel<0 then
secondLine="Target: <"..string.rep("_", tvel+max)..string.rep("+", -tvel).."|"..string.rep("_", max)..">"
else
secondLine="Target: <"..string.rep("_", max).."|"..string.rep("+", tvel)..string.rep("_", max-tvel)..">"
end
if vel==0 then
return firstLine.."\n"..secondLine.."\nup for forward, down for backward, use to get off train. "
elseif vel<0 then
return firstLine.."\n"..secondLine.."\nPress up to decelerate, down to accelerate, sneak to stop."
elseif vel>0 then
return firstLine.."\n"..secondLine.."\nPress up to accelerate, down to decelerate, sneak to stop."
end
end
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