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Fix crashes in train logic, allow breaking apart trains

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This commit is contained in:
teknomunk 2024-04-09 00:40:04 +00:00
parent e59a89eb2a
commit 475d6f3e93
2 changed files with 31 additions and 3 deletions
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2
mods/ENTITIES/mcl_minecarts/movement.lua
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@ -121,7 +121,7 @@ local function handle_cart_collision(cart1, prev_pos, next_dir)
for uuid,v in pairs(carts) do
-- Clean up dead carts
local data = get_cart_data(uuid)
if not data then
if not data or not data.connected_at then
carts[uuid] = nil
dirty = true
uuid = nil

32
mods/ENTITIES/mcl_minecarts/train.lua
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@ -4,6 +4,7 @@ local mod = mcl_minecarts
-- Imports
local get_cart_data = mod.get_cart_data
local save_cart_data = mod.save_cart_data
local MAX_TRAIN_LENGTH = mod.MAX_TRAIN_LENGTH
-- Follow .behind to the back end of a train
@ -62,6 +63,27 @@ function mod.distance_between_cars(car1, car2)
end
local distance_between_cars = mod.distance_between_cars
local function break_train_at(cart)
if cart.ahead then
local ahead = get_cart_data(cart.ahead)
if ahead then
ahead.behind = nil
cart.ahead = nil
save_cart_data(ahead.uuid)
end
end
if cart.behind then
local behind = get_cart_data(cart.behind)
if behind then
behind.ahead = nil
cart.behind = nil
save_cart_data(behind.uuid)
end
end
save_cart_data(cart.uuid)
end
mod.break_train_at = break_train_at
function mod.update_train(cart)
local staticdata = cart._staticdata
@ -88,11 +110,17 @@ function mod.update_train(cart)
local e = 0
local separation
local cart_velocity = velocity
if behind then
if not c.connected_at then
break_train_at(c)
elseif behind then
separation = distance_between_cars(behind, c)
local e = 0
if separation > 1.6 then
if not separation then
break_train_at(c)
elseif separation > 1.6 then
cart_velocity = velocity * 0.9
elseif separation > 2.5 then
break_train_at(c)
elseif separation < 1.15 then
cart_velocity = velocity * 1.1
end