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VoxeLibre/mods/boat/init.lua

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2015-06-29 19:55:56 +02:00
--
-- 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",
mesh = "boat_base.x",
textures = {"boat_texture.png"},
driver = nil,
v = 0,
stepcount = 0,
unattended = 0
}
function boat.on_rightclick(self, 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(self, 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(self, puncher, time_from_last_punch, tool_capabilities, direction)
if self.driver then
self.driver:set_detach()
self.driver = nil
boat.schedule_removal(self)
if not minetest.setting_getbool("creative_mode") then
puncher:get_inventory():add_item("main", "boat:boat")
end
else
boat.schedule_removal(self)
if not minetest.setting_getbool("creative_mode") then
puncher:get_inventory():add_item("main", "boat:boat")
end
end
end
function boat.on_step(self, dtime)
self.stepcount=self.stepcount+1
if self.stepcount>9 then
self.stepcount=0
if self.driver then
local ctrl = self.driver:get_player_control()
self.unattended=0
local yaw = self.object:getyaw()
if ctrl.up and self.v<3 then
self.v = self.v + 1
end
if ctrl.down and self.v>=-1 then
self.v = self.v - 1
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
local tmp_velocity = get_velocity(self.v, self.object:getyaw(), 0)
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
function boat.schedule_removal(self)
minetest.after(0.25,function()
self.object:remove()
end)
end
minetest.register_entity("boat:boat", boat)
minetest.register_craftitem("boat:boat", {
description = "Boat",
inventory_image = "boat_inventory.png",
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.add_entity(pointed_thing.under, "boat:boat")
if not minetest.setting_getbool("creative_mode") then
itemstack:take_item()
end
return itemstack
end,
})
minetest.register_craft({
output = "boat:boat",
recipe = {
{"", "", ""},
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{"default:wood", "", "default:wood"},
{"default:wood", "default:wood", "default:wood"},
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},
})
local time_to_load= os.clock() - init
print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))