minetest_game/mods/carts/functions.lua

222 lines
4.8 KiB
Lua
Raw Normal View History

Carts: Merge boost_cart as "carts" mod This is all the working code from SmallJoker's boost_cart, poored into a more suitable form for minetest_game. - Mesecons and moreores stuff was removed entirely. - Textures were all renamed and moved out of default/ - Updated license, readme.txt, attribution - Changed code license to MIT, left artwork at CC0 - removed default:rail and made aliases for it - :carts:rail is now carts:rail. - localized entity def - removed copper rail entirely - startstop rail was removed, as well as detector rail - remodeled to b3d using stujones11 excellent blend model, but sizes of cart adjusted to make pixel sizes consistent (0.625) everywhere. - slightly more complex texture map for the cart (front/side visibly different) - rail parameters are passed as a separate def table, and stored in a private list. This avoids having to call `get_meta` on every node. In return, we need the node name, though. - adds metal sounds (based on default metal sound function) and cart moving sound. - reduced cart speeds to max 7, 5 by pushing. - Added on_step() rail event handler, gets called when a cart is on a rail. - Added various rebased updates from upstream (thanks Krock) - Included a fix that removes the 'reverse jiggle' when stopping. - Included reworked textures by sofar. The mod namespace is still public, but I'm NOT declaring it an API. I'd rather see it localized instead, for now. Any public interface in this code is *experimental* at best, and should be considered non-stable and unsupported for now.
2016-10-08 23:14:10 +02:00
function carts:get_sign(z)
if z == 0 then
return 0
else
return z / math.abs(z)
end
end
function carts:manage_attachment(player, obj)
if not player then
return
end
local status = obj ~= nil
local player_name = player:get_player_name()
if default.player_attached[player_name] == status then
return
end
default.player_attached[player_name] = status
if status then
player:set_attach(obj, "", {x=0, y=6, z=0}, {x=0, y=0, z=0})
player:set_eye_offset({x=0, y=-4, z=0},{x=0, y=-4, z=0})
else
player:set_detach()
player:set_eye_offset({x=0, y=0, z=0},{x=0, y=0, z=0})
end
end
function carts:velocity_to_dir(v)
if math.abs(v.x) > math.abs(v.z) then
return {x=carts:get_sign(v.x), y=carts:get_sign(v.y), z=0}
else
return {x=0, y=carts:get_sign(v.y), z=carts:get_sign(v.z)}
end
end
function carts:is_rail(pos, railtype)
local node = minetest.get_node(pos).name
if node == "ignore" then
local vm = minetest.get_voxel_manip()
local emin, emax = vm:read_from_map(pos, pos)
local area = VoxelArea:new{
MinEdge = emin,
MaxEdge = emax,
}
local data = vm:get_data()
local vi = area:indexp(pos)
node = minetest.get_name_from_content_id(data[vi])
end
if minetest.get_item_group(node, "rail") == 0 then
return false
end
if not railtype then
return true
end
return minetest.get_item_group(node, "connect_to_raillike") == railtype
end
function carts:check_front_up_down(pos, dir_, check_up, railtype)
local dir = vector.new(dir_)
local cur
-- Front
dir.y = 0
cur = vector.add(pos, dir)
if carts:is_rail(cur, railtype) then
return dir
end
-- Up
if check_up then
dir.y = 1
cur = vector.add(pos, dir)
if carts:is_rail(cur, railtype) then
return dir
end
end
-- Down
dir.y = -1
cur = vector.add(pos, dir)
if carts:is_rail(cur, railtype) then
return dir
end
return nil
end
function carts:get_rail_direction(pos_, dir, ctrl, old_switch, railtype)
local pos = vector.round(pos_)
local cur
local left_check, right_check = true, true
-- Check left and right
local left = {x=0, y=0, z=0}
local right = {x=0, y=0, z=0}
if dir.z ~= 0 and dir.x == 0 then
left.x = -dir.z
right.x = dir.z
elseif dir.x ~= 0 and dir.z == 0 then
left.z = dir.x
right.z = -dir.x
end
if ctrl then
if old_switch == 1 then
left_check = false
elseif old_switch == 2 then
right_check = false
end
if ctrl.left and left_check then
cur = carts:check_front_up_down(pos, left, false, railtype)
if cur then
return cur, 1
end
left_check = false
end
if ctrl.right and right_check then
cur = carts:check_front_up_down(pos, right, false, railtype)
if cur then
return cur, 2
end
right_check = true
end
end
-- Normal
cur = carts:check_front_up_down(pos, dir, true, railtype)
if cur then
return cur
end
-- Left, if not already checked
if left_check then
cur = carts:check_front_up_down(pos, left, false, railtype)
if cur then
return cur
end
end
-- Right, if not already checked
if right_check then
cur = carts:check_front_up_down(pos, right, false, railtype)
if cur then
return cur
end
end
-- Backwards
if not old_switch then
cur = carts:check_front_up_down(pos, {
x = -dir.x,
y = dir.y,
z = -dir.z
}, true, railtype)
if cur then
return cur
end
end
return {x=0, y=0, z=0}
end
2016-11-26 09:48:24 +01:00
function carts:pathfinder(pos_, old_pos, old_dir, ctrl, pf_switch, railtype)
Carts: Merge boost_cart as "carts" mod This is all the working code from SmallJoker's boost_cart, poored into a more suitable form for minetest_game. - Mesecons and moreores stuff was removed entirely. - Textures were all renamed and moved out of default/ - Updated license, readme.txt, attribution - Changed code license to MIT, left artwork at CC0 - removed default:rail and made aliases for it - :carts:rail is now carts:rail. - localized entity def - removed copper rail entirely - startstop rail was removed, as well as detector rail - remodeled to b3d using stujones11 excellent blend model, but sizes of cart adjusted to make pixel sizes consistent (0.625) everywhere. - slightly more complex texture map for the cart (front/side visibly different) - rail parameters are passed as a separate def table, and stored in a private list. This avoids having to call `get_meta` on every node. In return, we need the node name, though. - adds metal sounds (based on default metal sound function) and cart moving sound. - reduced cart speeds to max 7, 5 by pushing. - Added on_step() rail event handler, gets called when a cart is on a rail. - Added various rebased updates from upstream (thanks Krock) - Included a fix that removes the 'reverse jiggle' when stopping. - Included reworked textures by sofar. The mod namespace is still public, but I'm NOT declaring it an API. I'd rather see it localized instead, for now. Any public interface in this code is *experimental* at best, and should be considered non-stable and unsupported for now.
2016-10-08 23:14:10 +02:00
local pos = vector.round(pos_)
2016-11-26 09:48:24 +01:00
local pf_pos = vector.round(old_pos)
Carts: Merge boost_cart as "carts" mod This is all the working code from SmallJoker's boost_cart, poored into a more suitable form for minetest_game. - Mesecons and moreores stuff was removed entirely. - Textures were all renamed and moved out of default/ - Updated license, readme.txt, attribution - Changed code license to MIT, left artwork at CC0 - removed default:rail and made aliases for it - :carts:rail is now carts:rail. - localized entity def - removed copper rail entirely - startstop rail was removed, as well as detector rail - remodeled to b3d using stujones11 excellent blend model, but sizes of cart adjusted to make pixel sizes consistent (0.625) everywhere. - slightly more complex texture map for the cart (front/side visibly different) - rail parameters are passed as a separate def table, and stored in a private list. This avoids having to call `get_meta` on every node. In return, we need the node name, though. - adds metal sounds (based on default metal sound function) and cart moving sound. - reduced cart speeds to max 7, 5 by pushing. - Added on_step() rail event handler, gets called when a cart is on a rail. - Added various rebased updates from upstream (thanks Krock) - Included a fix that removes the 'reverse jiggle' when stopping. - Included reworked textures by sofar. The mod namespace is still public, but I'm NOT declaring it an API. I'd rather see it localized instead, for now. Any public interface in this code is *experimental* at best, and should be considered non-stable and unsupported for now.
2016-10-08 23:14:10 +02:00
local pf_dir = vector.new(old_dir)
for i = 1, 3 do
if vector.equals(pf_pos, pos) then
-- Success! Cart moved on correctly
return true
end
pf_dir, pf_switch = carts:get_rail_direction(pf_pos, pf_dir, ctrl, pf_switch, railtype)
if vector.equals(pf_dir, {x=0, y=0, z=0}) then
-- No way forwards
return false
end
pf_pos = vector.add(pf_pos, pf_dir)
end
-- Cart not found
return false
end
function carts:register_rail(name, def, railparams)
local def_default = {
drawtype = "raillike",
paramtype = "light",
sunlight_propagates = true,
is_ground_content = false,
Carts: Merge boost_cart as "carts" mod This is all the working code from SmallJoker's boost_cart, poored into a more suitable form for minetest_game. - Mesecons and moreores stuff was removed entirely. - Textures were all renamed and moved out of default/ - Updated license, readme.txt, attribution - Changed code license to MIT, left artwork at CC0 - removed default:rail and made aliases for it - :carts:rail is now carts:rail. - localized entity def - removed copper rail entirely - startstop rail was removed, as well as detector rail - remodeled to b3d using stujones11 excellent blend model, but sizes of cart adjusted to make pixel sizes consistent (0.625) everywhere. - slightly more complex texture map for the cart (front/side visibly different) - rail parameters are passed as a separate def table, and stored in a private list. This avoids having to call `get_meta` on every node. In return, we need the node name, though. - adds metal sounds (based on default metal sound function) and cart moving sound. - reduced cart speeds to max 7, 5 by pushing. - Added on_step() rail event handler, gets called when a cart is on a rail. - Added various rebased updates from upstream (thanks Krock) - Included a fix that removes the 'reverse jiggle' when stopping. - Included reworked textures by sofar. The mod namespace is still public, but I'm NOT declaring it an API. I'd rather see it localized instead, for now. Any public interface in this code is *experimental* at best, and should be considered non-stable and unsupported for now.
2016-10-08 23:14:10 +02:00
walkable = false,
selection_box = {
type = "fixed",
fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
},
sounds = default.node_sound_metal_defaults()
}
for k, v in pairs(def_default) do
def[k] = v
end
if not def.inventory_image then
def.wield_image = def.tiles[1]
def.inventory_image = def.tiles[1]
end
if railparams then
carts.railparams[name] = table.copy(railparams)
end
minetest.register_node(name, def)
end
function carts:get_rail_groups(additional_groups)
-- Get the default rail groups and add more when a table is given
local groups = {dig_immediate = 2, attached_node = 1, rail = 1, connect_to_raillike = 1}
if type(additional_groups) == "table" then
for k, v in pairs(additional_groups) do
groups[k] = v
end
end
return groups
end