Genericise handling of multiple meanings of wear

Zefram

2014-04-28 99fd5dfee5a70b0656e40787168d2c67ba417738

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local water_can_max_load = 16
local lava_can_max_load = 8
 
local S = technic.getter
 
minetest.register_craft({
    output = 'technic:water_can 1',
    recipe = {
        {'technic:zinc_ingot', 'technic:rubber','technic:zinc_ingot'},
        {'default:steel_ingot', '', 'default:steel_ingot'},
        {'technic:zinc_ingot', 'default:steel_ingot', 'technic:zinc_ingot'},
    }
})
 
minetest.register_craft({
    output = 'technic:lava_can 1',
    recipe = {
        {'technic:zinc_ingot', 'technic:stainless_steel_ingot','technic:zinc_ingot'},
        {'technic:stainless_steel_ingot', '', 'technic:stainless_steel_ingot'},
        {'technic:zinc_ingot', 'technic:stainless_steel_ingot', 'technic:zinc_ingot'},
    }
})
 
 
minetest.register_tool("technic:water_can", {
    description = S("Water Can"),
    inventory_image = "technic_water_can.png",
    stack_max = 1,
    wear_represents = "content_level",
    liquids_pointable = true,
    on_use = function(itemstack, user, pointed_thing)
        if pointed_thing.type ~= "node" then
            return
        end
        node = minetest.get_node(pointed_thing.under)
 
        local charge = nil
        if itemstack:get_metadata() == "" then
            charge = 0
        else
            charge = tonumber(itemstack:get_metadata())
        end
        if node.name == "default:water_source" then
            if charge < water_can_max_load then
                minetest.remove_node(pointed_thing.under)
                charge = charge + 1
                itemstack:set_metadata(tostring(charge))
                technic.set_RE_wear(itemstack, charge, water_can_max_load)
            end
            return itemstack
        end
        if charge == 0 then
            return
        end
 
        if node.name == "default:water_flowing" then
            minetest.set_node(pointed_thing.under, {name="default:water_source"})
            charge = charge - 1
            itemstack:set_metadata(tostring(charge))
            technic.set_RE_wear(itemstack, charge, water_can_max_load)
            return itemstack
        end
 
        node = minetest.get_node(pointed_thing.above)
        if node.name == "air" then
            minetest.set_node(pointed_thing.above, {name="default:water_source"})
            charge = charge - 1;
            itemstack:set_metadata(tostring(charge))
            technic.set_RE_wear(itemstack, charge, water_can_max_load)
            return itemstack
        end        
    end,
})
 
minetest.register_tool("technic:lava_can", {
    description = S("Lava Can"),
    inventory_image = "technic_lava_can.png",
    stack_max = 1,
    wear_represents = "content_level",
    liquids_pointable = true,
    on_use = function(itemstack, user, pointed_thing)
        if pointed_thing.type ~= "node" then
            return
        end
        node = minetest.get_node(pointed_thing.under)
        local charge = 0
        if itemstack:get_metadata() == "" then
            charge = 0
        else
            charge = tonumber(itemstack:get_metadata())
        end
 
        if node.name == "default:lava_source" then
            if charge < lava_can_max_load then
                minetest.remove_node(pointed_thing.under)
                charge = charge + 1
                itemstack:set_metadata(tostring(charge))
                technic.set_RE_wear(itemstack, charge, lava_can_max_load)
            end
            return itemstack
        end
        if charge == 0 then
            return
        end
 
        if node.name == "default:lava_flowing" then
            minetest.set_node(pointed_thing.under, {name="default:lava_source"})
            charge = charge - 1    
            itemstack:set_metadata(tostring(charge))
            technic.set_RE_wear(itemstack, charge, lava_can_max_load)
            return itemstack
        end
 
        node = minetest.get_node(pointed_thing.above)
        if node.name == "air" then
            minetest.set_node(pointed_thing.above, {name="default:lava_source"})
            charge = charge - 1
            itemstack:set_metadata(tostring(charge))
            technic.set_RE_wear(itemstack, charge, lava_can_max_load)
            return itemstack
        end
    end,
})