| | |
| | | } |
| | | }) |
| | | |
| | | -- 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 |
| | | 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, node, player) |
| | | local def = minetest.registered_nodes[node.name] |
| | | if def and def.liquidtype ~= "none" then |
| | |
| | | texture = particle_texture .. "^[transform" .. math.random(0, 7), |
| | | }) |
| | | minetest.sound_play(sound, {pos = player_pos, max_hear_distance = range}) |
| | | for pos in rayIter(start_pos, dir, range) do |
| | | for pos in technic.trace_node_ray(start_pos, dir, range) do |
| | | if minetest.is_protected(pos, player_name) then |
| | | minetest.record_protection_violation(pos, player_name) |
| | | break |
| | |
| | | |
| | | -- If there's enough charge left, fire the laser |
| | | if meta.charge >= m[4] then |
| | | meta.charge = meta.charge - m[4] |
| | | laser_shoot(user, m[2], "technic_laser_beam_mk"..m[1]..".png", "technic_laser_mk"..m[1]) |
| | | technic.set_RE_wear(itemstack, meta.charge, m[3]) |
| | | itemstack:set_metadata(minetest.serialize(meta)) |
| | | if not technic.creative_mode then |
| | | meta.charge = meta.charge - m[4] |
| | | technic.set_RE_wear(itemstack, meta.charge, m[3]) |
| | | itemstack:set_metadata(minetest.serialize(meta)) |
| | | end |
| | | end |
| | | return itemstack |
| | | end, |