Maciej 'agaran' Pijanka
2017-03-15 10307f23a78b33af50dc4a5f3d1baafb4ee4b0d9
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local mining_lasers_list = {
--    {<num>, <range of the laser shots>, <max_charge>, <charge_per_shot>},
    {"1", 7, 50000, 1000},
    {"2", 14, 200000, 2000},
    {"3", 21, 650000, 3000},
}
 
local S = technic.getter
 
minetest.register_craft({
    output = 'technic:laser_mk1',
    recipe = {
        {'default:diamond', 'technic:brass_ingot',        'default:obsidian_glass'},
        {'',                'technic:brass_ingot',        'technic:red_energy_crystal'},
        {'',                '',                           'default:copper_ingot'},
    }
})
minetest.register_craft({
    output = 'technic:laser_mk2',
    recipe = {
        {'default:diamond', 'technic:carbon_steel_ingot', 'technic:laser_mk1'},
        {'',                'technic:carbon_steel_ingot', 'technic:green_energy_crystal'},
        {'',                '',                           'default:copper_ingot'},
    }
})
minetest.register_craft({
    output = 'technic:laser_mk3',
    recipe = {
        {'default:diamond', 'technic:carbon_steel_ingot', 'technic:laser_mk2'},
        {'',                'technic:carbon_steel_ingot', 'technic:blue_energy_crystal'},
        {'',                '',                           'default:copper_ingot'},
    }
})
 
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,
            velocity = {x=0, y=2, z=0},
            acceleration = {x=0, y=-1, z=0},
            expirationtime = 1.5,
            size = 6 + math.random() * 2,
            texture = "smoke_puff.png^[transform" .. math.random(0, 7),
        })
        return
    end
    minetest.node_dig(pos, node, player)
end
 
local no_destroy = {
    ["air"] = true,
    ["default:lava_source"] = true,
    ["default:lava_flowing"] = true,
}
local function laser_shoot(player, range, particle_texture, sound)
    local player_pos = player:getpos()
    local player_name = player:get_player_name()
    local dir = player:get_look_dir()
 
    local start_pos = vector.new(player_pos)
    -- Adjust to head height
    start_pos.y = start_pos.y + 1.6
    minetest.add_particle({
        pos = startpos,
        velocity = dir,
        acceleration = vector.multiply(dir, 50),
        expirationtime = range / 11,
        size = 1,
        texture = particle_texture .. "^[transform" .. math.random(0, 7),
    })
    minetest.sound_play(sound, {pos = player_pos, max_hear_distance = range})
    for pos in technic.trace_node_ray_fat(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
end
 
 
for _, m in pairs(mining_lasers_list) do
    technic.register_power_tool("technic:laser_mk"..m[1], m[3])
    minetest.register_tool("technic:laser_mk"..m[1], {
        description = S("Mining Laser Mk%d"):format(m[1]),
        inventory_image = "technic_mining_laser_mk"..m[1]..".png",
        stack_max = 1,
        wear_represents = "technic_RE_charge",
        on_refill = technic.refill_RE_charge,
        on_use = function(itemstack, user)
            local meta = minetest.deserialize(itemstack:get_metadata())
            if not meta or not meta.charge then
                return
            end
 
            -- If there's enough charge left, fire the laser
            if meta.charge >= m[4] then
                laser_shoot(user, m[2], "technic_laser_beam_mk"..m[1]..".png", "technic_laser_mk"..m[1])
                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,
    })
end