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VoxeLibre/mods/mcl_boats/init.lua

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--
-- Helper functions
--
local init = os.clock()
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local function is_water(pos)
local nn = minetest.get_node(pos).name
return minetest.get_item_group(nn, "water") ~= 0
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
--
-- boat entity
--
local boat = {
physical = true,
collisionbox = {-1,-0.5,-1, 1,0.5,1},
visual = "mesh",
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mesh = "mcl_boats_base.x",
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_driver = nil,
_v = 0,
_stepcount = 0,
_unattended = 0
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}
function boat.on_rightclick(self, clicker)
if not clicker or not clicker:is_player() then
return
end
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if self._driver and clicker == self._driver then
self._driver = nil
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clicker:set_detach()
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elseif not self._driver then
self._driver = clicker
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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(self, staticdata, dtime_s)
self.object:set_armor_groups({immortal=1})
if staticdata then
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self._v = tonumber(staticdata)
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end
end
function boat.get_staticdata()
return tostring(v)
end
function boat.on_punch(self, puncher, time_from_last_punch, tool_capabilities, direction)
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if self._driver then
self._driver:set_detach()
self._driver = nil
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if not minetest.setting_getbool("creative_mode") then
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puncher:get_inventory():add_item("main", "mcl_boats:boat")
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end
self.object:remove()
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else
if not minetest.setting_getbool("creative_mode") then
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puncher:get_inventory():add_item("main", "mcl_boats:boat")
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end
self.object:remove()
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end
end
function boat.on_step(self, dtime)
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self._stepcount=self._stepcount+1
if self._stepcount>9 then
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self._stepcount=0
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if self._driver then
local ctrl = self._driver:get_player_control()
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self._unattended=0
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local yaw = self.object:getyaw()
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if ctrl.up and self._v<3 then
self._v = self._v + 1
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end
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if ctrl.down and self._v>=-1 then
self._v = self._v - 1
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end
if ctrl.left then
if ctrl.down then
self.object:setyaw(yaw-math.pi/12-dtime*math.pi/12)
else
self.object:setyaw(yaw+math.pi/12+dtime*math.pi/12)
end
end
if ctrl.right then
if ctrl.down then
self.object:setyaw(yaw+math.pi/12+dtime*math.pi/12)
else
self.object:setyaw(yaw-math.pi/12-dtime*math.pi/12)
end
end
end
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local tmp_velocity = get_velocity(self._v, self.object:getyaw(), 0)
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local tmp_pos = self.object:getpos()
tmp_velocity.y=0
if is_water(tmp_pos) then
tmp_velocity.y=2
end
tmp_pos.y=tmp_pos.y-0.5
if minetest.get_node(tmp_pos).name=="air" then
tmp_velocity.y=-2
end
self.object:setvelocity(tmp_velocity)
end
end
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local woods = { "", "_spruce", "_birch", "_jungle", "_dark", "_acacia" }
local names = { "Oak Boat", "Spruce Boat", "Birch Boat", "Jungle Boat", "Dark Oak Boat", "Acacia Boat" }
local craftstuffs = { "default:wood", "default:sprucewood", "default:birchwood", "default:junglewood", "default:darkwood", "default:acaciawood" }
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for w=1, #woods do
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local textures = {"mcl_boats_texture.png"}
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minetest.register_entity("mcl_boats:boat"..woods[w], boat)
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minetest.register_craftitem("mcl_boats:boat"..woods[w], {
description = names[w],
inventory_image = "mcl_boats_inventory.png",
liquids_pointable = true,
groups = { boat = 1, transport = 1},
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stack_max = 1,
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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.add_entity(pointed_thing.under, "mcl_boats:boat"..woods[w])
if not minetest.setting_getbool("creative_mode") then
itemstack:take_item()
end
return itemstack
end,
})
local c = craftstuffs[w]
minetest.register_craft({
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output = "mcl_boats:boat"..woods[w],
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recipe = {
{c, "", c},
{c, c, c},
},
})
end
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minetest.register_craft({
type = "fuel",
recipe = "group:boat",
burntime = 20,
})
local time_to_load= os.clock() - init
print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))