I don't know for sure how to modify the mod to get it to work in lava. But from my understanding it would be by doing something like this.
Modify the "init.lua" file at this section (at the beginning):
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- Code: Select all
local function is_water(pos)
local nn = minetest.env:get_node(pos).name
return minetest.get_item_group(nn, "water") ~= 0 <------THIS LINE
end
It would be modified to something like this:
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local function is_water(pos)
local nn = minetest.env:get_node(pos).name
return minetest.get_item_group(nn, "lava") ~= 0
end
That way it would be able to be placed on lava instead of water. Well, that what I think it would do, since I haven't tried it out and I don't know the code that well.
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Edit:
I tried modifying the code, and I got it so there is a second boat which can go on lava instead of water. It has the texture of Obsidian, but the icon for it is still wood (since this is just a modification of the code).
Just replace all of the text in "init.lua" with this:
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- Code: Select all
--
-- Helper functions
--
local function is_water(pos)
local nn = minetest.env:get_node(pos).name
return minetest.get_item_group(nn, "water") ~= 0
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.cos(yaw)*v
local z = math.sin(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
--
-- Cart entity
--
local boat = {
physical = true,
collisionbox = {-0.6,-0.4,-0.6, 0.6,0.3,0.6},
visual = "mesh",
mesh = "boat.x",
textures = {"default_wood.png"},
driver = nil,
v = 0,
}
function boat:on_rightclick(clicker)
if not clicker or not clicker:is_player() then
return
end
if self.driver and clicker == self.driver then
self.driver = nil
clicker:set_detach()
elseif not self.driver then
self.driver = clicker
clicker:set_attach(self.object, "", {x=0,y=5,z=0}, {x=0,y=0,z=0})
self.object:setyaw(clicker:get_look_yaw())
end
end
function boat:on_activate(staticdata, dtime_s)
self.object:set_armor_groups({immortal=1})
if staticdata then
self.v = tonumber(staticdata)
end
end
function boat:get_staticdata()
return tostring(v)
end
function boat:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
self.object:remove()
if puncher and puncher:is_player() then
puncher:get_inventory():add_item("main", "boats:boat")
end
end
function boat:on_step(dtime)
self.v = get_v(self.object:getvelocity())*get_sign(self.v)
if self.driver then
local ctrl = self.driver:get_player_control()
if ctrl.up then
self.v = self.v+0.1
end
if ctrl.down then
self.v = self.v-0.08
end
if ctrl.left then
self.object:setyaw(self.object:getyaw()+math.pi/120+dtime*math.pi/120)
end
if ctrl.right then
self.object:setyaw(self.object:getyaw()-math.pi/120-dtime*math.pi/120)
end
end
local s = get_sign(self.v)
self.v = self.v - 0.02*s
if s ~= get_sign(self.v) then
self.object:setvelocity({x=0, y=0, z=0})
self.v = 0
return
end
if math.abs(self.v) > 4.5 then
self.v = 4.5*get_sign(self.v)
end
local p = self.object:getpos()
p.y = p.y-0.5
if not is_water(p) then
if minetest.registered_nodes[minetest.env:get_node(p).name].walkable then
self.v = 0
end
self.object:setacceleration({x=0, y=-10, z=0})
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
else
p.y = p.y+1
if is_water(p) then
self.object:setacceleration({x=0, y=3, z=0})
local y = self.object:getvelocity().y
if y > 2 then
y = 2
end
if y < 0 then
self.object:setacceleration({x=0, y=10, z=0})
end
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), y))
else
self.object:setacceleration({x=0, y=0, z=0})
if math.abs(self.object:getvelocity().y) < 1 then
local pos = self.object:getpos()
pos.y = math.floor(pos.y)+0.5
self.object:setpos(pos)
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), 0))
else
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
end
end
end
end
minetest.register_entity("boats:boat", boat)
minetest.register_craftitem("boats:boat", {
description = "Boat",
inventory_image = "boat_inventory.png",
wield_image = "boat_wield.png",
wield_scale = {x=2, y=2, z=1},
liquids_pointable = true,
on_place = function(itemstack, placer, pointed_thing)
if pointed_thing.type ~= "node" then
return
end
if not is_water(pointed_thing.under) then
return
end
pointed_thing.under.y = pointed_thing.under.y+0.5
minetest.env:add_entity(pointed_thing.under, "boats:boat")
itemstack:take_item()
return itemstack
end,
})
minetest.register_craft({
output = "boats:boat",
recipe = {
{"", "", ""},
{"group:wood", "", "group:wood"},
{"group:wood", "group:wood", "group:wood"},
},
})
--
-- Helper functions
--
local function is_lava(pos)
local nn = minetest.env:get_node(pos).name
return minetest.get_item_group(nn, "lava") ~= 0
end
--
-- Cart entity
--
local lavaboat = {
physical = true,
collisionbox = {-0.6,-0.4,-0.6, 0.6,0.3,0.6},
visual = "mesh",
mesh = "boat.x",
textures = {"default_obsidian.png"},
driver = nil,
v = 0,
}
function lavaboat:on_rightclick(clicker)
if not clicker or not clicker:is_player() then
return
end
if self.driver and clicker == self.driver then
self.driver = nil
clicker:set_detach()
elseif not self.driver then
self.driver = clicker
clicker:set_attach(self.object, "", {x=0,y=5,z=0}, {x=0,y=0,z=0})
self.object:setyaw(clicker:get_look_yaw())
end
end
function lavaboat:on_activate(staticdata, dtime_s)
self.object:set_armor_groups({immortal=1})
if staticdata then
self.v = tonumber(staticdata)
end
end
function lavaboat:get_staticdata()
return tostring(v)
end
function lavaboat:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
self.object:remove()
if puncher and puncher:is_player() then
puncher:get_inventory():add_item("main", "boats:lavaboat")
end
end
function lavaboat:on_step(dtime)
self.v = get_v(self.object:getvelocity())*get_sign(self.v)
if self.driver then
local ctrl = self.driver:get_player_control()
if ctrl.up then
self.v = self.v+0.1
end
if ctrl.down then
self.v = self.v-0.08
end
if ctrl.left then
self.object:setyaw(self.object:getyaw()+math.pi/120+dtime*math.pi/120)
end
if ctrl.right then
self.object:setyaw(self.object:getyaw()-math.pi/120-dtime*math.pi/120)
end
end
local s = get_sign(self.v)
self.v = self.v - 0.02*s
if s ~= get_sign(self.v) then
self.object:setvelocity({x=0, y=0, z=0})
self.v = 0
return
end
if math.abs(self.v) > 4.5 then
self.v = 4.5*get_sign(self.v)
end
local p = self.object:getpos()
p.y = p.y-0.5
if not is_lava(p) then
if minetest.registered_nodes[minetest.env:get_node(p).name].walkable then
self.v = 0
end
self.object:setacceleration({x=0, y=-10, z=0})
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
else
p.y = p.y+1
if is_lava(p) then
self.object:setacceleration({x=0, y=3, z=0})
local y = self.object:getvelocity().y
if y > 2 then
y = 2
end
if y < 0 then
self.object:setacceleration({x=0, y=10, z=0})
end
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), y))
else
self.object:setacceleration({x=0, y=0, z=0})
if math.abs(self.object:getvelocity().y) < 1 then
local pos = self.object:getpos()
pos.y = math.floor(pos.y)+0.5
self.object:setpos(pos)
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), 0))
else
self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
end
end
end
end
minetest.register_entity("boats:lavaboat", lavaboat)
minetest.register_craftitem("boats:lavaboat", {
description = "Lava Boat",
inventory_image = "boat_inventory.png",
wield_image = "boat_wield.png",
wield_scale = {x=2, y=2, z=1},
liquids_pointable = true,
on_place = function(itemstack, placer, pointed_thing)
if pointed_thing.type ~= "node" then
return
end
if not is_lava(pointed_thing.under) then
return
end
pointed_thing.under.y = pointed_thing.under.y+0.5
minetest.env:add_entity(pointed_thing.under, "boats:lavaboat")
itemstack:take_item()
return itemstack
end,
})
minetest.register_craft({
output = "boats:lavaboat",
recipe = {
{"", "", ""},
{"group:wood", "default:obsidian", "group:wood"},
{"group:wood", "group:wood", "group:wood"},
},
})
The crafting recipe for the Lava Boat is the same as the regular boat, but it has an Obsidian node in the middle.
Posted: Sun Aug 04, 2013 21:50