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https://git.minetest.land/MineClone2/MineClone2.git
synced 2024-12-05 09:13:16 +01:00
224 lines
5.9 KiB
Lua
224 lines
5.9 KiB
Lua
-- Constants
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local size_min = 20 / 100 -- minimum size, prescaled
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local size_max = 59 / 100 -- maximum size, prescaled
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local delta_size = (size_max - size_min) / 10 -- Size change for each XP size level
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local max_orb_age = 300 -- seconds
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local gravity = vector.new(0, -((tonumber(minetest.settings:get("movement_gravity"))) or 9.81), 0)
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local size_to_xp = {
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-- min and max XP amount for a given size
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{-32768, 2}, -- 1
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{ 3, 6}, -- 2
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{ 7, 16}, -- 3
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{ 17, 36}, -- 4
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{ 37, 72}, -- 5
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{ 73, 148}, -- 6
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{ 149, 306}, -- 7
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{ 307, 616}, -- 8
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{ 617, 1236}, -- 9
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{ 1237, 2476}, -- 10
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{ 2477, 32767} -- 11
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}
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local function xp_to_size(xp)
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xp = xp or 0
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-- Find the size for the xp amount
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for i=1,11 do
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local bucket = size_to_xp[i]
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if xp >= bucket[1] and xp <= bucket[2] then
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return (i - 1) * delta_size + size_min
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end
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end
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-- Fallback is the minimum size
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return size_min
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end
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local function xp_step(self, dtime)
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--if item set to be collected then only execute go to player
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if self.collected == true then
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if not self.collector then
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self.collected = false
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return
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end
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local collector = minetest.get_player_by_name(self.collector)
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if collector and collector:get_hp() > 0 and vector.distance(self.object:get_pos(),collector:get_pos()) < 7.25 then
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self.object:set_acceleration(vector.new(0,0,0))
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self.disable_physics(self)
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--get the variables
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local pos = self.object:get_pos()
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local pos2 = collector:get_pos()
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local player_velocity = collector:get_velocity() or collector:get_player_velocity()
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pos2.y = pos2.y + 0.8
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local direction = vector.direction(pos,pos2)
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local distance = vector.distance(pos2,pos)
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local multiplier = distance
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if multiplier < 1 then
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multiplier = 1
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end
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local currentvel = self.object:get_velocity()
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if distance > 1 then
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multiplier = 20 - distance
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local velocity = vector.multiply(direction, multiplier)
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local acceleration = vector.new(velocity.x - currentvel.x, velocity.y - currentvel.y, velocity.z - currentvel.z)
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self.object:add_velocity(vector.add(acceleration, player_velocity))
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elseif distance < 0.8 then
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mcl_experience.add_xp(collector, self._xp)
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self.object:remove()
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end
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return
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else
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self.collector = nil
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self:enable_physics()
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end
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end
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-- Age orbs
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self.age = self.age + dtime
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if self.age > max_orb_age then
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self.object:remove()
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return
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end
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local pos = self.object:get_pos()
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if not pos then return end
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-- Get the node directly below the XP orb
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local node = minetest.get_node_or_nil({
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x = pos.x,
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y = pos.y - 0.25, -- Orb collision box is +/-0.2, so go a bit below that
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z = pos.z
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})
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-- Remove nodes in 'ignore'
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if node and node.name == "ignore" then
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self.object:remove()
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return
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end
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if not self.physical_state then
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return -- Don't do anything
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end
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-- Slide on slippery nodes
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local vel = self.object:get_velocity()
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local def = node and minetest.registered_nodes[node.name]
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local is_moving = (def and not def.walkable) or
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vel.x ~= 0 or vel.y ~= 0 or vel.z ~= 0
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local is_slippery = false
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if def and def.walkable then
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local slippery = minetest.get_item_group(node.name, "slippery")
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is_slippery = slippery ~= 0
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if is_slippery and (math.abs(vel.x) > 0.2 or math.abs(vel.z) > 0.2) then
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-- Horizontal deceleration
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local slip_factor = 4.0 / (slippery + 4)
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self.object:set_acceleration({
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x = -vel.x * slip_factor,
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y = 0,
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z = -vel.z * slip_factor
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})
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elseif vel.y == 0 then
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is_moving = false
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end
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end
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if self.moving_state == is_moving and self.slippery_state == is_slippery then
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-- Do not update anything until the moving state changes
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return
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end
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self.moving_state = is_moving
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self.slippery_state = is_slippery
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if is_moving then
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self.object:set_acceleration(gravity)
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else
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self.object:set_acceleration({x = 0, y = 0, z = 0})
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self.object:set_velocity({x = 0, y = 0, z = 0})
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end
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end
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minetest.register_entity("mcl_experience:orb", {
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initial_properties = {
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hp_max = 1,
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physical = true,
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collide_with_objects = false,
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collisionbox = {-0.2, -0.2, -0.2, 0.2, 0.2, 0.2},
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visual = "sprite",
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visual_size = {x = 0.4, y = 0.4},
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textures = {"mcl_experience_orb.png"},
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spritediv = {x = 1, y = 14},
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initial_sprite_basepos = {x = 0, y = 0},
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is_visible = true,
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pointable = false,
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},
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moving_state = true,
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slippery_state = false,
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physical_state = true,
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-- Item expiry
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age = 0,
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-- Pushing item out of solid nodes
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force_out = nil,
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force_out_start = nil,
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--Collection Variables
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collectable = false,
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try_timer = 0,
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collected = false,
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delete_timer = 0,
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radius = 4,
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on_activate = function(self, staticdata, dtime_s)
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self.object:set_velocity(vector.new(
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math.random(-2,2)*math.random(),
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math.random(2,5),
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math.random(-2,2)*math.random()
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))
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self.object:set_armor_groups({immortal = 1})
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self.object:set_velocity({x = 0, y = 2, z = 0})
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self.object:set_acceleration(gravity)
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-- Assign 0 xp in case the entity was persisted even though it should not have been (static_save = false)
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-- This was a minetest bug for a while: https://github.com/minetest/minetest/issues/14420
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local xp = tonumber(staticdata) or 0
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self._xp = xp
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local size = xp_to_size(xp)
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self.object:set_properties({
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visual_size = {x = size, y = size},
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glow = 14,
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})
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self.object:set_sprite({x=1,y=math.random(1,14)}, 14, 0.05, false)
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end,
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get_staticdata = function(self)
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return tostring(self._xp or 0)
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end,
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enable_physics = function(self)
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if not self.physical_state then
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self.physical_state = true
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self.object:set_properties({physical = true})
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self.object:set_velocity({x=0, y=0, z=0})
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self.object:set_acceleration(gravity)
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end
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end,
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disable_physics = function(self)
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if self.physical_state then
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self.physical_state = false
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self.object:set_properties({physical = false})
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self.object:set_velocity({x=0, y=0, z=0})
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self.object:set_acceleration({x=0, y=0, z=0})
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end
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end,
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on_step = function(self, dtime)
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xp_step(self, dtime)
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end,
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})
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