94 lines
1.8 KiB
Lua
94 lines
1.8 KiB
Lua
--[[
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Minecart
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========
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Copyright (C) 2019-2023 Joachim Stolberg
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MIT
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See license.txt for more information
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]]--
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local minecart_lib = [[
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// Minecart library for reading status and distance
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// from running carts. To do this, a cart terminal
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// must be connected to an I/O Module.
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import "lib/techage.c"
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var payload[1];
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var resp[1];
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// Read cart state.
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// Parameters:
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// - ip_port: IOM port to the Cart Terminal
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// - card_id: Cart number
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// Function returns:
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// - 0 for unknown/missing
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// - 1 for stopped
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// - 2 for running
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func mc_get_state(io_port, cart_id) {
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var sts;
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payload[0] = cart_id;
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request_data(io_port, 129, payload, resp);
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if(sts == 0) {
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return resp[0];
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}
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return 0;
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}
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// Read cart distance.
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// Parameters:
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// - ip_port: IOM port to the Cart Terminal
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// - card_id: Cart number
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// Function returns the distance between
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// Cart Terminal and cart in meter.
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func mc_get_distance(io_port, cart_id) {
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var sts;
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payload[0] = cart_id;
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request_data(io_port, 130, payload, resp);
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if(sts == 0) {
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return resp[0];
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}
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return 0;
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}
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]]
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local minecart_demo = [[
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import "sys/stdio.asm"
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import "sys/os.c"
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import "lib/minecart.c"
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func init() {
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setstdout(1); // use terminal window for stdout
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putstr("### Minecart Demo ###\n");
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}
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func cart_state(io_port, cart_id) {
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putstr("Cart #");
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putnum(cart_id);
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putstr(": state = ");
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putnum(mc_get_state(io_port, cart_id));
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putstr(", distance = ");
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putnum(mc_get_distance(io_port, cart_id));
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putstr("\n");
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}
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func loop() {
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// Adapt IO port and cart ID to your needs
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cart_state(0, 1);
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sleep(20);
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}
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]]
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minetest.register_on_mods_loaded(function()
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if minetest.global_exists("vm16") and minetest.global_exists("beduino") then
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vm16.register_ro_file("beduino", "lib/minecart.c", minecart_lib)
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vm16.register_ro_file("beduino", "demo/minecart.c", minecart_demo)
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end
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end)
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