-- vi: noexpandtab local cable_entry = "^technic_cable_connection_overlay.png" local register_spacecannon = function(def) local entity_texture = "energycube_" .. def.color .. ".png" minetest.register_entity("spacecannon:energycube_" .. def.color, { initial_properties = { visual = "cube", visual_size = {x=0.25, y=0.25}, textures = { entity_texture, entity_texture, entity_texture, entity_texture, entity_texture, entity_texture }, collisionbox = {-0.25,-0.25,-0.25, 0.25,0.25,0.25}, physical = false }, timer = 0, lifetime = 0, static_save = false, penetrated = 0, on_step = function(self, dtime) self.timer = self.timer + dtime self.lifetime = self.lifetime + dtime if self.lifetime > def.timeout then self.object:remove() return end local pos = self.object:getpos() if self.timer > 0.5 then -- add sparks along the way minetest.add_particlespawner({ amount = 5, time = 0.5, minpos = pos, maxpos = pos, minvel = {x = -2, y = -2, z = -2}, maxvel = {x = 2, y = 2, z = 2}, minacc = {x = -3, y = -3, z = -3}, maxacc = {x = 3, y = 3, z = 3}, minexptime = 1, maxexptime = 2.5, minsize = 0.5, maxsize = 0.75, texture = "spacecannon_spark.png", glow = 5 }) self.timer = 0 end local node = minetest.get_node(pos) local node_def = minetest.registered_nodes[node.name] local goes_through = not node_def.walkable if goes_through then local objs = minetest.get_objects_inside_radius({x=pos.x,y=pos.y,z=pos.z}, 1) local collided = false for _, obj in pairs(objs) do if (obj:is_player() or (obj:get_luaentity() ~= nil and obj:get_luaentity().name ~= self.name and obj:get_luaentity().name ~= "__builtin:item")) and spacecannon.can_damage(obj) then collided = true obj:punch(self.object, 1.0, { full_punch_interval=1.0, damage_groups={fleshy=def.damage}, }, nil) end end if collided then spacecannon.destroy(pos, def.range, def.intensity) self.penetrated = self.penetrated + 1 if self.penetrated >= def.penetration then self.object:remove() end end else -- collision spacecannon.destroy(pos, def.range, def.intensity) self.penetrated = self.penetrated + 1 if self.penetrated >= def.penetration then self.object:remove() end end end }) -- top, bottom local textures = { "cannon_blank.png" .. cable_entry, "cannon_front_" .. def.color .. ".png", "cannon_blank.png" .. cable_entry, "cannon_blank.png" .. cable_entry, "cannon_blank.png" .. cable_entry, "cannon_blank.png" .. cable_entry } if def.textures then textures = def.textures end minetest.register_node("spacecannon:cannon_" .. def.color, { description = def.name .. " (" .. def.desc .. ")", tiles = textures, groups = {cracky=3,oddly_breakable_by_hand=3,technic_machine = 1, technic_hv = 1}, drop = "spacecannon:cannon_" .. def.color, sounds = default.node_sound_glass_defaults(), paramtype2 = "facedir", legacy_facedir_simple = true, mesecons = {effector = { action_on = function (pos) local meta = minetest.get_meta(pos) local owner = meta:get_string("owner") spacecannon.fire(pos, owner, def.color, def.speed, def.is_th, def.storage_require_mod) end }}, connects_to = {"group:technic_hv_cable"}, connect_sides = {"bottom", "top", "left", "right", "front", "back"}, digiline = { receptor = { rules = spacecannon.digiline_rules, action = function() end }, effector = { rules = spacecannon.digiline_rules, action = spacecannon.digiline_effector }, }, after_place_node = function(pos, placer) local meta = minetest.get_meta(pos) meta:set_string("owner", placer:get_player_name() or "") end, on_construct = function(pos) local meta = minetest.get_meta(pos) meta:set_int("powerstorage", 0) meta:set_int("HV_EU_input", 0) meta:set_int("HV_EU_demand", 0) -- Set default digiline channel (do before updating formspec). meta:set_string("channel", "spacecannon") -- Set inventory (not used for thermal cannons) if not def.is_th then local inv = meta:get_inventory() inv:set_size("src", 1) end spacecannon.update_formspec(meta, def.is_th) end, technic_run = function(pos) local meta = minetest.get_meta(pos) local eu_input = meta:get_int("HV_EU_input") local demand = meta:get_int("HV_EU_demand") local store = meta:get_int("powerstorage") local config_store = spacecannon.config.ki_powerstorage * def.storage_require_mod if def.is_th then config_store = spacecannon.config.th_powerstorage * def.storage_require_mod end local config_require = spacecannon.config.ki_powerrequirement if def.is_th then config_require = spacecannon.config.th_powerrequirement end local infotext = "Power: " .. eu_input .. "/" .. demand .. " " .. "Store: " .. store .. "\n" .. def.name .. ": " .. def.desc meta:set_string("infotext", infotext) if store < config_store then -- charge meta:set_int("HV_EU_demand", config_require) meta:set_int("powerstorage", store + eu_input) else -- charged meta:set_int("HV_EU_demand", 0) end end, on_receive_fields = function(pos, _, fields, sender) local playername = sender and sender:get_player_name() or "" if minetest.is_protected(pos, playername) then -- only allow protection-owner to fire and configure return end local meta = minetest.get_meta(pos) if fields.fire then spacecannon.fire(pos, playername, def.color, def.speed, def.is_th, def.storage_require_mod) end if fields.set_digiline_channel and fields.digiline_channel then meta:set_string("channel", fields.digiline_channel) end spacecannon.update_formspec(meta, def.is_th) end, after_dig_node = function(pos, _node, meta, _digger) if meta.inventory and meta.inventory.src and meta.inventory.src[1] then minetest.add_item(pos, ItemStack(meta.inventory.src[1])) end end }) technic.register_machine("HV", "spacecannon:cannon_" .. def.color, technic.receiver) minetest.register_craft({ output = 'spacecannon:cannon_' .. def.color, recipe = { {'', 'default:steelblock', ''}, { def.ingredient, def.ingredient, def.ingredient}, {'', 'default:steelblock', ''} } }) end register_spacecannon({ color = "green", name = "Ion cannon", desc = "fast, low damage", is_th = true, range = 1, storage_require_mod = 1, damage = 5, intensity = 1, timeout = 8, speed = 10, penetration = 0, ingredient = "default:mese_block" }) register_spacecannon({ color = "yellow", name = "Plasma cannon", desc = "medium speed, medium damage", is_th = true, range = 3, storage_require_mod = 3, intensity = 2, damage = 8, timeout = 8, speed = 5, penetration = 0, ingredient = "spacecannon:cannon_green" }) register_spacecannon({ color = "red", name = "Nova cannon", desc = "slow, heavy damage", is_th = true, range = 5, storage_require_mod = 5, intensity = 4, damage = 10, timeout = 15, speed = 3, penetration = 0, ingredient = "spacecannon:cannon_yellow" }) -- Railguns -- Regular railgun register_spacecannon({ color = "blue", name = "Railgun cannon", desc = "fast, 2x penetrating damage", textures = { "railgun_blank.png" .. cable_entry, "railgun_front.png", "railgun_blank.png" .. cable_entry, "railgun_blank.png" .. cable_entry, "railgun_top_bottom.png", "railgun_top_bottom.png", }, is_th = false, range = 0, storage_require_mod = 1, intensity = 2, damage = 6, timeout = 10, speed = 9, penetration = 2, ingredient = "technic:copper_coil" }) -- Helical railgun register_spacecannon({ color = "purple", name = "Helical railgun cannon", desc = "fast, 4x penetrating damage", textures = { "railgun_blank.png" .. cable_entry, "helical_railgun_front.png", "railgun_blank.png" .. cable_entry, "railgun_blank.png" .. cable_entry, "helical_railgun_top_bottom.png", "helical_railgun_top_bottom.png", }, is_th = false, range = 0, storage_require_mod = 1.5, intensity = 4, damage = 6, timeout = 15, speed = 10, penetration = 4, ingredient = "spacecannon:cannon_blue" })