diff options
Diffstat (limited to 'init.lua')
| -rw-r--r-- | init.lua | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..4d8f467 --- /dev/null +++ b/init.lua @@ -0,0 +1,271 @@ +-- +-- Helper functions +-- + +local function is_water(pos) + local nn = minetest.get_node(pos).name + return minetest.get_item_group(nn, "water") ~= 0 +end + + +local function get_sign(i) + if i == 0 then + return 0 + else + return i / math.abs(i) + end +end + + +local function get_velocity(v, yaw, y) + local x = -math.sin(yaw) * v + local z = math.cos(yaw) * v + return {x = x, y = y, z = z} +end + + +local function get_v(v) + return math.sqrt(v.x ^ 2 + v.z ^ 2) +end + +-- +-- Boat entity +-- + +local boat = { + physical = true, + -- Warning: Do not change the position of the collisionbox top surface, + -- lowering it causes the boat to fall through the world if underwater + collisionbox = {-0.5, -0.35, -0.5, 0.5, 0.3, 0.5}, + visual = "mesh", + mesh = "boats_boat.obj", + textures = {"default_wood.png"}, + + driver = nil, + v = 0, + last_v = 0, + removed = false +} + + +function boat.on_rightclick(self, clicker) + if not clicker or not clicker:is_player() then + return + end + local name = clicker:get_player_name() + if self.driver and clicker == self.driver then + self.driver = nil + clicker:set_detach() + default.player_attached[name] = false + default.player_set_animation(clicker, "stand" , 30) + local pos = clicker:getpos() + pos = {x = pos.x, y = pos.y + 0.2, z = pos.z} + minetest.after(0.1, function() + clicker:setpos(pos) + end) + elseif not self.driver then + local attach = clicker:get_attach() + if attach and attach:get_luaentity() then + local luaentity = attach:get_luaentity() + if luaentity.driver then + luaentity.driver = nil + end + clicker:set_detach() + end + self.driver = clicker + clicker:set_attach(self.object, "", + {x = 0, y = 11, z = -3}, {x = 0, y = 0, z = 0}) + default.player_attached[name] = true + minetest.after(0.2, function() + default.player_set_animation(clicker, "sit" , 30) + end) + clicker:set_look_horizontal(self.object:getyaw()) + end +end + + +function boat.on_activate(self, staticdata, dtime_s) + self.object:set_armor_groups({immortal = 1}) + if staticdata then + self.v = tonumber(staticdata) + end + self.last_v = self.v +end + + +function boat.get_staticdata(self) + return tostring(self.v) +end + + +function boat.on_punch(self, puncher) + if not puncher or not puncher:is_player() or self.removed then + return + end + if self.driver and puncher == self.driver then + self.driver = nil + puncher:set_detach() + default.player_attached[puncher:get_player_name()] = false + end + if not self.driver then + self.removed = true + local inv = puncher:get_inventory() + if not (creative and creative.is_enabled_for + and creative.is_enabled_for(puncher:get_player_name())) + or not inv:contains_item("main", "boats:boat") then + local leftover = inv:add_item("main", "boats:boat") + -- if no room in inventory add a replacement boat to the world + if not leftover:is_empty() then + minetest.add_item(self.object:getpos(), leftover) + end + end + -- delay remove to ensure player is detached + minetest.after(0.1, function() + self.object:remove() + end) + end +end + + +function boat.on_step(self, dtime) + self.v = get_v(self.object:getvelocity()) * get_sign(self.v) + if self.driver then + local ctrl = self.driver:get_player_control() + local yaw = self.object:getyaw() + if ctrl.up then + self.v = self.v + 0.1 + elseif ctrl.down then + self.v = self.v - 0.1 + end + if ctrl.left then + if self.v < 0 then + self.object:setyaw(yaw - (1 + dtime) * 0.03) + else + self.object:setyaw(yaw + (1 + dtime) * 0.03) + end + elseif ctrl.right then + if self.v < 0 then + self.object:setyaw(yaw + (1 + dtime) * 0.03) + else + self.object:setyaw(yaw - (1 + dtime) * 0.03) + end + end + end + local velo = self.object:getvelocity() + if self.v == 0 and velo.x == 0 and velo.y == 0 and velo.z == 0 then + self.object:setpos(self.object:getpos()) + return + end + local s = get_sign(self.v) + self.v = self.v - 0.02 * s + if s ~= get_sign(self.v) then + self.object:setvelocity({x = 0, y = 0, z = 0}) + self.v = 0 + return + end + if math.abs(self.v) > 5 then + self.v = 5 * get_sign(self.v) + end + + local p = self.object:getpos() + p.y = p.y - 0.5 + local new_velo + local new_acce = {x = 0, y = 0, z = 0} + if not is_water(p) then + local nodedef = minetest.registered_nodes[minetest.get_node(p).name] + if (not nodedef) or nodedef.walkable then + self.v = 0 + new_acce = {x = 0, y = 1, z = 0} + else + new_acce = {x = 0, y = -9.8, z = 0} + end + new_velo = get_velocity(self.v, self.object:getyaw(), + self.object:getvelocity().y) + self.object:setpos(self.object:getpos()) + else + p.y = p.y + 1 + if is_water(p) then + local y = self.object:getvelocity().y + if y >= 5 then + y = 5 + elseif y < 0 then + new_acce = {x = 0, y = 20, z = 0} + else + new_acce = {x = 0, y = 5, z = 0} + end + new_velo = get_velocity(self.v, self.object:getyaw(), y) + self.object:setpos(self.object:getpos()) + else + new_acce = {x = 0, y = 0, z = 0} + if math.abs(self.object:getvelocity().y) < 1 then + local pos = self.object:getpos() + pos.y = math.floor(pos.y) + 0.5 + self.object:setpos(pos) + new_velo = get_velocity(self.v, self.object:getyaw(), 0) + else + new_velo = get_velocity(self.v, self.object:getyaw(), + self.object:getvelocity().y) + self.object:setpos(self.object:getpos()) + end + end + end + self.object:setvelocity(new_velo) + self.object:setacceleration(new_acce) +end + + +minetest.register_entity("boats:boat", boat) + + +minetest.register_craftitem("boats:boat", { + description = "Boat", + inventory_image = "boats_inventory.png", + wield_image = "boats_wield.png", + wield_scale = {x = 2, y = 2, z = 1}, + liquids_pointable = true, + groups = {flammable = 2}, + + on_place = function(itemstack, placer, pointed_thing) + local under = pointed_thing.under + local node = minetest.get_node(under) + local udef = minetest.registered_nodes[node.name] + if udef and udef.on_rightclick and + not (placer and placer:get_player_control().sneak) then + return udef.on_rightclick(under, node, placer, itemstack, + pointed_thing) or itemstack + end + + if pointed_thing.type ~= "node" then + return itemstack + end + if not is_water(pointed_thing.under) then + return itemstack + end + pointed_thing.under.y = pointed_thing.under.y + 0.5 + boat = minetest.add_entity(pointed_thing.under, "boats:boat") + if boat then + boat:setyaw(placer:get_look_horizontal()) + if not (creative and creative.is_enabled_for + and creative.is_enabled_for(placer:get_player_name())) then + itemstack:take_item() + end + end + return itemstack + end, +}) + + +minetest.register_craft({ + output = "boats:boat", + recipe = { + {"", "", "" }, + {"group:wood", "", "group:wood"}, + {"group:wood", "group:wood", "group:wood"}, + }, +}) + +minetest.register_craft({ + type = "fuel", + recipe = "boats:boat", + burntime = 20, +}) |