Mirrorlandia_minetest/spacecannon
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working cannon

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This commit is contained in:
Thomas Rudin 2018-04-24 08:55:09 +02:00
parent 51bf04ef14
commit 21a75720d0
1 changed files with 75 additions and 33 deletions
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74
cannon.lua
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@ -1,5 +1,25 @@
local has_technic_mod = minetest.get_modpath("technic")
local destroy = function(pos,range)
for x=-range,range do
for y=-range,range do
for z=-range,range do
if x*x+y*y+z*z <= range * range + range then
local np={x=pos.x+x,y=pos.y+y,z=pos.z+z}
if minetest.is_protected(np, "") then
return -- fail fast
end
local n = minetest.env:get_node(np)
if n.name ~= "air" then
minetest.env:remove_node(np)
end
end
end
end
end
end
minetest.register_entity("spacecannon:energycube", {
initial_properties = {
@ -8,15 +28,9 @@ minetest.register_entity("spacecannon:energycube", {
textures = {"energycube.png","energycube.png","energycube.png","energycube.png","energycube.png","energycube.png"},
collisionbox = {-0.25,-0.25,-0.25, 0.25,0.25,0.25},
physical = false,
timer=0
},
on_step = function(self, dtime)
if self.timer == nil then
return --XXX
end
self.timer=self.timer+dtime
if self.timer >= 0.3 then
local pos = self.object:getpos()
local node = minetest.get_node(pos)
@ -34,8 +48,30 @@ minetest.register_entity("spacecannon:energycube", {
end
end
elseif node.name ~= "air" then
-- collision
destroy(pos, 1)
self.object:remove()
local radius = 1
-- https://github.com/minetest/minetest_game/blob/master/mods/tnt/init.lua
minetest.add_particlespawner({
amount = 64,
time = 0.5,
minpos = vector.subtract(pos, radius / 2),
maxpos = vector.add(pos, radius / 2),
minvel = {x = -10, y = -10, z = -10},
maxvel = {x = 10, y = 10, z = 10},
minacc = vector.new(),
maxacc = vector.new(),
minexptime = 1,
maxexptime = 2.5,
minsize = radius * 3,
maxsize = radius * 5,
texture = "tnt_smoke.png",
})
minetest.sound_play("tnt_explode", {pos = pos, gain = 1.5, max_hear_distance = math.min(radius * 20, 128)})
end
end
end,
@ -54,11 +90,20 @@ minetest.register_entity("spacecannon:energycube", {
end,
})
local facedir_to_down_dir = function(facing)
return (
{[0]={x=0, y=-1, z=0},
{x=0, y=0, z=-1},
{x=0, y=0, z=1},
{x=-1, y=0, z=0},
{x=1, y=0, z=0},
{x=0, y=1, z=0}})[math.floor(facing/4)]
end
minetest.register_node("spacecannon:cannon", {
description = "Spacecannon",
tiles = {"cannon.png","cannon.png","cannon.png","cannon_front.png","cannon.png","cannon.png"},
-- top, bottom
tiles = {"cannon.png","cannon_front.png","cannon.png","cannon.png","cannon.png","cannon.png"},
groups = {cracky=3,oddly_breakable_by_hand=3,technic_machine = 1, technic_hv = 1},
drop = "spacecannon:cannon",
sounds = default.node_sound_glass_defaults(),
@ -66,14 +111,11 @@ minetest.register_node("spacecannon:cannon", {
mesecons = {effector = {
action_on = function (pos, node)
local dir = minetest.facedir_to_dir(node.param2 % 4)
print(dir.x)
print(dir.y)
print(dir.z)
local dir = facedir_to_down_dir(node.param2)
local obj = minetest.add_entity({x=pos.x+dir.x, y=pos.y+dir.y, z=pos.z+dir.z}, "spacecannon:energycube")
local speed = 3
local obj = minetest.add_entity({x=pos.x+1, y=pos.y, z=pos.z}, "spacecannon:energycube")
obj:setvelocity({x=3, y=0, z=0})
-- obj:setacceleration({x=dir.x*-3, y=-settings.gravity, z=dir.z*-3})
obj:setvelocity({x=dir.x*speed, y=dir.y*speed, z=dir.z*speed})
end
}},