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https://git.minetest.land/MineClone2/MineClone2.git
synced 2024-12-05 01:03:44 +01:00
143 lines
4.6 KiB
Lua
143 lines
4.6 KiB
Lua
local modname = minetest.get_current_modname()
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local S = minetest.get_translator(modname)
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local math = math
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local vector = vector
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local mod_target = minetest.get_modpath("mcl_target")
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local how_to_throw = S("Use the punch key to throw.")
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-- Ender Pearl
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minetest.register_craftitem("mcl_throwing:ender_pearl", {
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description = S("Ender Pearl"),
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_tt_help = S("Throwable").."\n"..minetest.colorize(mcl_colors.YELLOW, S("Teleports you on impact for cost of 5 HP")),
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_doc_items_longdesc = S("An ender pearl is an item which can be used for teleportation at the cost of health. It can be thrown and teleport the thrower to its impact location when it hits a solid block or a plant. Each teleportation hurts the user by 5 hit points."),
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_doc_items_usagehelp = how_to_throw,
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wield_image = "mcl_throwing_ender_pearl.png",
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inventory_image = "mcl_throwing_ender_pearl.png",
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stack_max = 16,
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on_use = mcl_throwing.get_player_throw_function("mcl_throwing:ender_pearl_entity"),
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groups = { transport = 1 },
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})
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function on_collide(self, pos, node)
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if mod_target and node.name == "mcl_target:target_off" then
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mcl_target.hit(vector.round(pos), 0.4) --4 redstone ticks
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end
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if node.name == "ignore" then
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-- FIXME: This also means the player loses an ender pearl for throwing into unloaded areas
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return
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end
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-- Make sure we have a reference to the player
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local player = self._thrower and minetest.get_player_by_name(self._thrower)
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if not player then return end
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-- Teleport and hurt player
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-- First determine good teleport position
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local dir = vector.zero()
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local v = self.object:get_velocity()
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local node_def = minetest.registered_nodes[node.name]
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if node_def and node_def.walkable then
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local vc = vector.normalize(v) -- vector for calculating
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-- Node is walkable, we have to find a place somewhere outside of that node
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-- Zero-out the two axes with a lower absolute value than the axis with the strongest force
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local lv, ld = math.abs(vc.y), "y"
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if math.abs(vc.x) > lv then
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lv, ld = math.abs(vc.x), "x"
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end
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if math.abs(vc.z) > lv then
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ld = "z" --math.abs(vc.z)
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end
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if ld ~= "x" then vc.x = 0 end
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if ld ~= "y" then vc.y = 0 end
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if ld ~= "z" then vc.z = 0 end
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-- Final tweaks to the teleporting pos, based on direction
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-- Impact from the side
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dir.x = vc.x * -1
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dir.z = vc.z * -1
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-- Special case: top or bottom of node
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if vc.y > 0 then
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-- We need more space when impact is from below
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dir.y = -2.3
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elseif vc.y < 0 then
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-- Standing on top
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dir.y = 0.5
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end
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end
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-- If node was not walkable, no modification to pos is made.
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-- Final teleportation position
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local telepos = vector.add(pos, dir)
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local telenode = minetest.get_node(telepos)
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--[[ It may be possible that telepos is walkable due to the algorithm.
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Especially when the ender pearl is faster horizontally than vertical.
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This applies final fixing, just to be sure we're not in a walkable node ]]
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if not minetest.registered_nodes[telenode.name] or minetest.registered_nodes[telenode.name].walkable then
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if v.y < 0 then
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telepos.y = telepos.y + 0.5
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else
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telepos.y = telepos.y - 2.3
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end
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end
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local oldpos = player:get_pos()
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-- Teleport and hurt player
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player:set_pos(telepos)
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player:set_hp(player:get_hp() - 5, { type = "fall", from = "mod" })
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-- 5% chance to spawn endermite at the player's origin
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if math.random(1,20) == 1 then
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minetest.add_entity(oldpos, "mobs_mc:endermite")
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end
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end
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-- Ender pearl entity
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vl_projectile.register("mcl_throwing:ender_pearl_entity",{
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physical = false,
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timer=0,
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textures = {"mcl_throwing_ender_pearl.png"},
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visual_size = {x=0.9, y=0.9},
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collisionbox = {0,0,0,0,0,0},
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pointable = false,
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get_staticdata = mcl_throwing.get_staticdata,
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on_activate = mcl_throwing.on_activate,
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on_step = vl_projectile.update_projectile,
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_lastpos={},
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_thrower = nil, -- Player ObjectRef of the player who threw the ender pearl
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_vl_projectile = {
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behaviors = {
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vl_projectile.collides_with_solids,
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vl_projectile.collides_with_entities,
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},
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collides_with = {
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"mcl_core:vine", "mcl_core:deadbush",
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"group:flower", "group:sapling",
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"group:plant", "group:mushroom",
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},
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allow_punching = function(self, _, _, object)
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if self._owner == object:get_player_name() then
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return self.timer > 1
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end
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local le = object:get_luaentity()
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return le and (le.is_mob or le._hittable_by_projectile) or object:is_player()
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end,
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on_collide_with_entity = function(self, pos, entity)
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on_collide(self, pos, minetest.get_node(pos))
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end,
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on_collide_with_solid = on_collide,
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},
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})
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mcl_throwing.register_throwable_object("mcl_throwing:ender_pearl", "mcl_throwing:ender_pearl_entity", 22)
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