129 lines
3.7 KiB
Lua
129 lines
3.7 KiB
Lua
-- BALL: energy ball that flies around, can bounce and activate stuff
|
|
-- rnd 2016:
|
|
|
|
minetest.register_entity("basic_machines:ball",{
|
|
timer = 0,
|
|
lifetime = 20, -- how long it exists before disappearing
|
|
energy = 1, -- if negative it will deactivate stuff
|
|
owner = "",
|
|
origin = {x=0,y=0,z=0},
|
|
hp_max = 1,
|
|
visual="sprite",
|
|
visual_size={x=.50,y=.50},
|
|
collisionbox = {0,0,0,0,0,0},
|
|
physical=false,
|
|
--textures={"basic_machines_ball"},
|
|
on_punch=function(self, puncher, time_from_last_punch, tool_capabilities, dir) -- ball is punched
|
|
|
|
end,
|
|
on_activate = function(self, staticdata)
|
|
self.object:set_properties({textures={"basic_machines_ball.png"}})
|
|
self.object:setvelocity({x=0,y=0,z=0})
|
|
self.timer = 0;self.owner = "";
|
|
self.origin = self.object:getpos();
|
|
end,
|
|
|
|
on_step = function(self, dtime)
|
|
self.timer=self.timer+dtime
|
|
if self.timer>self.lifetime then
|
|
self.object:remove()
|
|
return
|
|
end
|
|
|
|
local pos=self.object:getpos()
|
|
|
|
local origin = self.origin;
|
|
local r = 20;
|
|
if math.abs(pos.x-origin.x)>r or math.abs(pos.y-origin.y)>r or math.abs(pos.z-origin.z)>r then -- remove if it goes too far
|
|
self.object:remove()
|
|
return
|
|
end
|
|
|
|
local nodename = minetest.get_node(pos).name;
|
|
local walkable = false;
|
|
if nodename ~= "air" then
|
|
walkable = minetest.registered_nodes[nodename].walkable;
|
|
end
|
|
|
|
if walkable then -- we hit a node
|
|
--minetest.chat_send_all(" hit node at " .. minetest.pos_to_string(pos))
|
|
|
|
if minetest.is_protected(pos,self.owner) then return end
|
|
local node = minetest.get_node(pos);
|
|
local table = minetest.registered_nodes[node.name];
|
|
if table and table.mesecons and table.mesecons.effector then
|
|
local effector = table.mesecons.effector;
|
|
if self.energy>0 then
|
|
if not effector.action_on then return end
|
|
effector.action_on(pos,node,16);
|
|
elseif self.energy<0 then
|
|
if not effector.action_off then return end
|
|
effector.action_off(pos,node,16);
|
|
end
|
|
self.object:remove()
|
|
else -- bounce
|
|
local v = self.object:getvelocity();
|
|
local opos = {x=math.modf(pos.x),y=math.modf(pos.y), z=math.modf(pos.z)}; -- obstacle
|
|
|
|
opos.x=math.abs(pos.x-opos.x);
|
|
opos.y=math.abs(pos.y-opos.y);
|
|
opos.z=math.abs(pos.z-opos.z);
|
|
local maxo = math.max(opos.x,opos.y,opos.z);
|
|
--minetest.chat_send_all(minetest.pos_to_string(opos))
|
|
if opos.x == maxo then
|
|
v.x=-v.x
|
|
elseif opos.y == maxo then
|
|
v.y=-v.y
|
|
else
|
|
v.z=-v.z
|
|
end
|
|
self.object:setvelocity(v);
|
|
if maxo<0.25 then self.object:remove() end -- too deep inside block, just remove
|
|
end
|
|
|
|
return
|
|
end
|
|
end,
|
|
})
|
|
|
|
|
|
minetest.register_node("basic_machines:ball_spawner", {
|
|
description = "Spawns energy ball one block above",
|
|
tiles = {"basic_machines_ball.png"},
|
|
groups = {oddly_breakable_by_hand=2,mesecon_effector_on = 1},
|
|
drawtype = "liquid",
|
|
walkable = false,
|
|
alpha = 150,
|
|
sounds = default.node_sound_wood_defaults(),
|
|
after_place_node = function(pos, placer)
|
|
local meta = minetest.env:get_meta(pos)
|
|
meta:set_string("owner", placer:get_player_name());
|
|
end,
|
|
|
|
mesecons = {effector = {
|
|
action_on = function (pos, node,ttl)
|
|
if ttl<0 then return end
|
|
local obj = minetest.add_entity({x=pos.x,y=pos.y,z=pos.z}, "basic_machines:ball");
|
|
local luaent = obj:get_luaentity();
|
|
luaent.energy = 1;
|
|
end,
|
|
|
|
action_off = function (pos, node,ttl)
|
|
if ttl<0 then return end
|
|
local obj = minetest.add_entity({x=pos.x,y=pos.y,z=pos.z}, "basic_machines:ball");
|
|
local luaent = obj:get_luaentity();
|
|
luaent.energy = -1;
|
|
obj:set_properties({textures={"basic_machines_ball.png^[colorize:blue:120"}})
|
|
end
|
|
}
|
|
},
|
|
})
|
|
|
|
|
|
minetest.register_craft({
|
|
output = "basic_machines:ball_spawner",
|
|
recipe = {
|
|
{"basic_machines:power_cell"},
|
|
{"basic_machines:keypad"}
|
|
}
|
|
}) |