sum_airship/init.lua

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local S = minetest.get_translator(minetest.get_current_modname())
-- globalscope var for the whole mod
sum_airship = {
i = {},
}
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local boat_visual_size = {x = 1, y = 1, z = 1}
local paddling_speed = 22
local boat_y_offset = 0.35
local boat_y_offset_ground = boat_y_offset + 0.6
local boat_side_offset = 1.001
local boat_max_hp = 4
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-- make sure silly people don't try to run it without the needed dependencies.
if not (minetest.get_modpath("mcl_boats")
and minetest.get_modpath("mcl_wool")
and minetest.get_modpath("mcl_core"))
and not minetest.get_modpath("default") then
error("\n\n===\nYou need either mcl2 or minetest_game to run sum_airship mod. \n" ..
"These are listed in the optional dependencies for cross compatibility, " ..
"but at least one is needed.\n===\n")
end
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local has_air_currents = minetest.get_modpath("sum_air_currents") ~= nil
local mcl = minetest.get_modpath("mcl_player") ~= nil
dofile(minetest.get_modpath("sum_airship") .. DIR_DELIM .. "crafts.lua")
local function is_group(pos, group)
local nn = minetest.get_node(pos).name
return minetest.get_item_group(nn, group) ~= 0
end
local function is_river_water(p)
return true
end
local function is_ice(pos)
return false
end
local function get_sign(i)
if i == 0 then
return 0
else
return i / math.abs(i)
end
end
local function get_velocity(v, yaw, y)
local x = -math.sin(yaw) * v
local z = math.cos(yaw) * v
return {x = x, y = y, z = z}
end
local function get_v(v)
return math.sqrt(v.x ^ 2 + v.z ^ 2)
end
local function check_object(obj)
return obj and (obj:is_player() or obj:get_luaentity()) and obj
end
local function get_visual_size(obj)
return obj:is_player() and {x = 1, y = 1, z = 1} or obj:get_luaentity()._old_visual_size or obj:get_properties().visual_size
end
local function set_attach(boat)
boat._driver:set_attach(boat.object, "",
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{x = 0, y = 0.42, z = -2}, {x = 0, y = 0, z = 0})
end
local function set_double_attach(boat)
boat._driver:set_attach(boat.object, "",
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{x = 0, y = 0.8, z = -2}, {x = 0, y = 0, z = 0})
boat._passenger:set_attach(boat.object, "",
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{x = 0, y = 0.8, z = -3.2}, {x = 0, y = 0, z = 0})
end
local function attach_object(self, obj)
if self._driver then
if self._driver:is_player() then
self._passenger = obj
else
self._passenger = self._driver
self._driver = obj
end
set_double_attach(self)
else
self._driver = obj
set_attach(self)
end
local visual_size = get_visual_size(obj)
local yaw = self.object:get_yaw()
obj:set_properties({visual_size = vector.divide(visual_size, boat_visual_size)})
if obj:is_player() then
local name = obj:get_player_name()
if mcl then mcl_player.player_attached[name] = true end
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minetest.after(0.2, function(player)
if player and mcl then
mcl_player.player_set_animation(player, "sit" , 30)
end
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end, obj)
obj:set_look_horizontal(yaw)
else
obj:get_luaentity()._old_visual_size = visual_size
end
end
local function detach_object(obj, change_pos)
obj:set_detach()
obj:set_properties({visual_size = get_visual_size(obj)})
if obj:is_player() and mcl then
mcl_player.player_attached[obj:get_player_name()] = false
mcl_player.player_set_animation(obj, "stand" , 30)
else
local luaent = obj:get_luaentity()
if luaent then luaent._old_visual_size = nil end
end
if change_pos then
obj:set_pos(vector.add(obj:get_pos(), vector.new(0, 0.2, 0)))
end
obj:set_pos(vector.offset(obj:get_pos(), 0, 0.7, 0))
minetest.after(0.1, function(obj, change_pos)
obj:set_pos(vector.offset(obj:get_pos(), 0, 0.7, 0))
end, obj, change_pos)
end
--
-- Boat entity
--
local boat = {
physical = true,
pointable = true,
-- collisionbox = {-0.5, -0.35, -0.5, 0.5, 0.3, 0.5},
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collisionbox = {-0.6, -0.2, -0.6, 0.6, 0.3, 0.6},
selectionbox = {-0.7, -0.35, -0.7, 0.7, 0.3, 0.7},
visual = "mesh",
mesh = "sum_airship_boat.b3d",
textures = {"sum_airship_texture_oak_boat.png"},
animations = {
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idle = {x= 10, y= 90},
},
visual_size = boat_visual_size,
hp_max = boat_max_hp,
damage_texture_modifier = "^[colorize:white:0",
_driver = nil, -- Attached driver (player) or nil if none
_passenger = nil,
_v = 0, -- Speed
_last_v = 0, -- Temporary speed variable
_removed = false, -- If true, boat entity is considered removed (e.g. after punch) and should be ignored
_itemstring = "sum_airship:boat", -- Itemstring of the boat item (implies boat type)
_animation = 0, -- 0: not animated; 1: paddling forwards; -1: paddling forwards
_regen_timer = 0,
_damage_anim = 0,
}
minetest.register_on_respawnplayer(detach_object)
function boat.on_rightclick(self, clicker)
if self._passenger or not clicker or clicker:get_attach() then
return
end
attach_object(self, clicker)
end
function boat.on_activate(self, staticdata, dtime_s)
self.object:set_armor_groups({fleshy = 100})
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self.object:set_animation(self.animations.idle, 25)
local data = minetest.deserialize(staticdata)
if type(data) == "table" then
self._v = data.v
self._last_v = self._v
self._itemstring = data.itemstring
while #data.textures < 5 do
table.insert(data.textures, data.textures[1])
end
self.object:set_properties({textures = data.textures})
end
end
function boat.get_staticdata(self)
return minetest.serialize({
v = self._v,
itemstring = self._itemstring,
textures = self.object:get_properties().textures
})
end
function boat.on_death(self, killer)
if minetest.get_modpath("mcl_burning") then
mcl_burning.extinguish(self.object) end
if killer and killer:is_player() and minetest.is_creative_enabled(killer:get_player_name()) then
local inv = killer:get_inventory()
if not inv:contains_item("main", self._itemstring) then
inv:add_item("main", self._itemstring)
end
else
minetest.add_item(self.object:get_pos(), self._itemstring)
end
if self._driver then
detach_object(self._driver)
end
if self._passenger then
detach_object(self._passenger)
end
self._driver = nil
self._passenger = nil
end
function boat.on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)
if damage > 0 then
self._regen_timer = 0
end
end
function boat.on_step(self, dtime, moveresult)
if minetest.get_modpath("mcl_burning") then
mcl_burning.tick(self.object, dtime, self) end
self._v = get_v(self.object:get_velocity()) * get_sign(self._v)
local v_factor = 1
local v_slowdown = 0.1
local p = self.object:get_pos()
local on_water = false
local in_water = minetest.get_item_group(minetest.get_node(p).name, "liquid") ~= 0
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local node_below = minetest.get_node(vector.offset(p, 0, -0.3, 0)).name
local is_on_floor = minetest.registered_nodes[node_below].walkable
local hp = self.object:get_hp()
local regen_timer = self._regen_timer + dtime
if hp >= boat_max_hp then
regen_timer = 0
elseif regen_timer >= 3 then
hp = hp + 1
self.object:set_hp(hp)
regen_timer = 0
end
self._regen_timer = regen_timer
if moveresult and moveresult.collides then
for _, collision in pairs(moveresult.collisions) do
local pos = collision.node_pos
if collision.type == "node" and minetest.get_item_group(minetest.get_node(pos).name, "dig_by_boat") > 0 then
minetest.dig_node(pos)
end
end
end
local climb = 0
local forward = 0
local had_passenger = self._passenger
self._driver = check_object(self._driver)
self._passenger = check_object(self._passenger)
if self._passenger then
if not self._driver then
self._driver = self._passenger
self._passenger = nil
else
local ctrl = self._passenger:get_player_control()
if ctrl and ctrl.sneak then
detach_object(self._passenger, true)
self._passenger = nil
end
end
end
if self._driver then
if had_passenger and not self._passenger then
set_attach(self)
end
local ctrl = self._driver:get_player_control()
if ctrl and ctrl.sneak then
detach_object(self._driver, true)
self._driver = nil
return
end
local yaw = self.object:get_yaw()
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-- if mcl and mcl_player.player_get_animation(self._driver).animation ~= "sit" then
-- mcl_player.player_set_animation(self._driver, "sit" , 30)
-- end
if ctrl and not in_water then
if ctrl.up then
-- Forwards
forward = forward + 1
elseif ctrl.down then
forward = forward - 1
end
if ctrl.aux1 then
climb = climb - 1
elseif ctrl.jump then
climb = climb + 1
end
if ctrl.left then
if self._v < 0 then
self.object:set_yaw(yaw - (1 + dtime) * 0.03 * v_factor)
else
self.object:set_yaw(yaw + (1 + dtime) * 0.03 * v_factor)
end
elseif ctrl.right then
if self._v < 0 then
self.object:set_yaw(yaw + (1 + dtime) * 0.03 * v_factor)
else
self.object:set_yaw(yaw - (1 + dtime) * 0.03 * v_factor)
end
end
end
end
-- for _, obj in pairs(minetest.get_objects_inside_radius(self.object:get_pos(), 1.3)) do
-- local entity = obj:get_luaentity()
-- if entity and entity.is_mob then
-- attach_object(self, obj)
-- break
-- end
-- end
local s = get_sign(self._v)
local yaw = self.object:get_yaw()
local yaw_dir = minetest.yaw_to_dir(yaw)
local anim = (boat_max_hp - hp - regen_timer / 3) / boat_max_hp * math.pi / 8
self.object:set_rotation(vector.new(anim, yaw, anim))
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local vel = vector.new(0, 0, 0)
if self._driver and not in_water then
dir = vector.multiply(yaw_dir, forward)
dir.y = climb
vel = vector.multiply(dir, 20)
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elseif in_water then
vel = {x=0, y=5, z=0}
else
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vel = {x=0, y=-0.6, z=0}
end
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if has_air_currents and not is_on_floor then
vel = sum_air_currents.apply_wind(vel)
end
self.object:set_acceleration(vel)
local v = self.object:get_velocity()
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v.x = v.x * 0.97
v.z = v.z * 0.97
v.y = v.y * 0.97
self.object:set_velocity(v)
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-- I hate trig
local chimney_dist = -1.0
local chimney_pos = {
x=p.x + (chimney_dist * math.sin(-yaw+0.13)),
y=p.y+0.9,
z=p.z + (chimney_dist * math.cos(-yaw+0.13))}
local spread = 0.06
minetest.add_particle({
pos = vector.offset(chimney_pos, math.random(-1, 1)*spread, 0, math.random(-1, 1)*spread),
velocity = {x=0, y=math.random(0.2,0.7), z=0},
expirationtime = math.random(0.5, 2),
size = math.random(0.1, 4),
collisiondetection = false,
vertical = false,
texture = "sum_airship_smoke.png",
})
end
-- Register one entity for all boat types
minetest.register_entity("sum_airship:boat", boat)
local boat_ids = { "main" }
local names = { S("Oak Airship") }
local images = { "oak" }
for b=1, #boat_ids do
local itemstring = "sum_airship:"..boat_ids[b]
local longdesc, usagehelp, tt_help, help, helpname
help = false
-- Only create one help entry for all boats
if b == 1 then
help = true
longdesc = S("Airship are used to travel in the air and stuff.")
usagehelp = S("thing")
helpname = S("Airship")
end
tt_help = S("Air vehicle")
minetest.register_craftitem(itemstring, {
description = names[b],
_tt_help = tt_help,
_doc_items_create_entry = help,
_doc_items_entry_name = helpname,
_doc_items_longdesc = longdesc,
_doc_items_usagehelp = usagehelp,
inventory_image = "sum_airship_"..images[b].."_boat.png",
liquids_pointable = true,
groups = { boat = 1, transport = 1},
stack_max = 1,
on_place = function(itemstack, placer, pointed_thing)
if pointed_thing.type ~= "node" then
return itemstack
end
-- Call on_rightclick if the pointed node defines it
local node = minetest.get_node(pointed_thing.under)
if placer and not placer:get_player_control().sneak then
if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
end
end
local pos = table.copy(pointed_thing.under)
local dir = vector.subtract(pointed_thing.above, pointed_thing.under)
if math.abs(dir.x) > 0.9 or math.abs(dir.z) > 0.9 then
pos = vector.add(pos, vector.multiply(dir, boat_side_offset))
else
pos = vector.add(pos, vector.multiply(dir, boat_y_offset_ground))
end
local boat = minetest.add_entity(pos, "sum_airship:boat")
local texture = "sum_airship_texture_"..images[b].."_boat.png"
boat:get_luaentity()._itemstring = itemstring
boat:set_properties({textures = { texture, texture, texture, texture, texture }})
boat:set_yaw(placer:get_look_horizontal())
if not minetest.is_creative_enabled(placer:get_player_name()) then
itemstack:take_item()
end
return itemstack
end,
_on_dispense = function(stack, pos, droppos, dropnode, dropdir)
local below = {x=droppos.x, y=droppos.y-1, z=droppos.z}
local belownode = minetest.get_node(below)
-- Place boat as entity on or in water
if minetest.get_item_group(dropnode.name, "water") ~= 0 or (dropnode.name == "air" and minetest.get_item_group(belownode.name, "water") ~= 0) then
minetest.add_entity(droppos, "sum_airship:boat")
else
minetest.add_item(droppos, stack)
end
end,
})
local cvs = "sum_airship:canvas_roll"
local hul = "sum_airship:hull"
local sng = "default:paper"
local iro = "default:steel_ingot"
if minetest.get_modpath("mcl_mobitems")
and minetest.get_modpath("mcl_core") then
sng = "mcl_mobitems:string"
iro = "mcl_core:iron_ingot"
end
minetest.register_craft({
output = itemstring,
recipe = {
{cvs, cvs, cvs},
{sng, iro, sng},
{sng, hul, sng},
},
})
end
minetest.register_craft({
type = "fuel",
recipe = "group:boat",
burntime = 20,
})
if minetest.get_modpath("doc_identifier") and doc.sub.identifier then
doc.sub.identifier.register_object("sum_airship:boat", "craftitems", "sum_airship:boat")
end