| | |
| | | } |
| | | }) |
| | | |
| | | local function table_icontains(t, v) |
| | | for i = 1,#t do |
| | | if v == t[i] then |
| | | return true |
| | | end |
| | | -- Based on code by Uberi: https://gist.github.com/Uberi/3125280 |
| | | local function rayIter(pos, dir, range) |
| | | local p = vector.round(pos) |
| | | local x_step, y_step, z_step = 0, 0, 0 |
| | | local x_component, y_component, z_component = 0, 0, 0 |
| | | local x_intersect, y_intersect, z_intersect = 0, 0, 0 |
| | | |
| | | if dir.x == 0 then |
| | | x_intersect = math.huge |
| | | elseif dir.x > 0 then |
| | | x_step = 1 |
| | | x_component = 1 / dir.x |
| | | x_intersect = x_component |
| | | else |
| | | x_step = -1 |
| | | x_component = 1 / -dir.x |
| | | end |
| | | return false |
| | | if dir.y == 0 then |
| | | y_intersect = math.huge |
| | | elseif dir.y > 0 then |
| | | y_step = 1 |
| | | y_component = 1 / dir.y |
| | | y_intersect = y_component |
| | | else |
| | | y_step = -1 |
| | | y_component = 1 / -dir.y |
| | | end |
| | | if dir.z == 0 then |
| | | z_intersect = math.huge |
| | | elseif dir.z > 0 then |
| | | z_step = 1 |
| | | z_component = 1 / dir.z |
| | | z_intersect = z_component |
| | | else |
| | | z_step = -1 |
| | | z_component = 1 / -dir.z |
| | | end |
| | | |
| | | return function() |
| | | if x_intersect < y_intersect then |
| | | if x_intersect < z_intersect then |
| | | p.x = p.x + x_step |
| | | x_intersect = x_intersect + x_component |
| | | else |
| | | p.z = p.z + z_step |
| | | z_intersect = z_intersect + z_component |
| | | end |
| | | elseif y_intersect < z_intersect then |
| | | p.y = p.y + y_step |
| | | y_intersect = y_intersect + y_component |
| | | else |
| | | p.z = p.z + z_step |
| | | z_intersect = z_intersect + z_component |
| | | end |
| | | if vector.distance(pos, p) > range then |
| | | return nil |
| | | end |
| | | return p |
| | | end |
| | | end |
| | | |
| | | local function laser_node(pos, player) |
| | | local node = minetest.get_node(pos) |
| | | if table_icontains({"air", "ignore", "default:lava_source", "default:lava_flowing"}, node.name) then |
| | | return |
| | | end |
| | | local pname = player:get_player_name() |
| | | if minetest.is_protected(pos, pname) then |
| | | minetest.record_protection_violation(pos, pname) |
| | | return |
| | | end |
| | | if table_icontains({"default:water_flowing", "default:water_source"}, node.name) then |
| | | local function laser_node(pos, node, player) |
| | | local def = minetest.registered_nodes[node.name] |
| | | if def and def.liquidtype ~= "none" then |
| | | minetest.remove_node(pos) |
| | | minetest.add_particle({ |
| | | pos = pos, |
| | | vel = {x=0, y=2, z=0}, |
| | | acc = {x=0, y=-1, z=0}, |
| | | expirationtime = 1.5, |
| | | size = 6+math.random()*2, |
| | | texture = "smoke_puff.png^[transform"..math.random(0,7), |
| | | size = 6 + math.random() * 2, |
| | | texture = "smoke_puff.png^[transform" .. math.random(0, 7), |
| | | }) |
| | | return |
| | | end |
| | | if player then |
| | | minetest.node_dig(pos, node, player) |
| | | end |
| | | minetest.node_dig(pos, node, player) |
| | | end |
| | | |
| | | if not vector.line then |
| | | dofile(technic.modpath.."/tools/vector_line.lua") |
| | | end |
| | | |
| | | local no_destroy = { |
| | | ["air"] = true, |
| | | ["default:lava_source"] = true, |
| | | ["default:lava_flowing"] = true, |
| | | } |
| | | local function laser_shoot(player, range, particle_texture, sound) |
| | | local playerpos = player:getpos() |
| | | local player_pos = player:getpos() |
| | | local player_name = player:get_player_name() |
| | | local dir = player:get_look_dir() |
| | | |
| | | local startpos = {x = playerpos.x, y = playerpos.y + 1.625, z = playerpos.z} |
| | | local mult_dir = vector.multiply(dir, 50) |
| | | local start_pos = vector.new(player_pos) |
| | | -- Adjust to head height |
| | | start_pos.y = start_pos.y + 1.9 |
| | | minetest.add_particle({ |
| | | pos = startpos, |
| | | vel = dir, |
| | | acc = mult_dir, |
| | | acc = vector.multiply(dir, 50), |
| | | expirationtime = range / 11, |
| | | size = 1, |
| | | texture = particle_texture.."^[transform"..math.random(0,7), |
| | | texture = particle_texture .. "^[transform" .. math.random(0, 7), |
| | | }) |
| | | for _,pos in ipairs(vector.line(vector.round(startpos), dir, range)) do |
| | | laser_node(pos, player) |
| | | minetest.sound_play(sound, {pos = player_pos, max_hear_distance = range}) |
| | | for pos in rayIter(start_pos, dir, range) do |
| | | if minetest.is_protected(pos, player_name) then |
| | | minetest.record_protection_violation(pos, player_name) |
| | | break |
| | | end |
| | | local node = minetest.get_node_or_nil(pos) |
| | | if not node then |
| | | break |
| | | end |
| | | if not no_destroy[node.name] then |
| | | laser_node(pos, node, player) |
| | | end |
| | | end |
| | | minetest.sound_play(sound, {pos = playerpos, max_hear_distance = range}) |
| | | end |
| | | |
| | | |