Support protected areas checks and on_rotate() overrides
Cleanup and refactoringmaster
entuland
parent
7f3ed66682
commit
6378cbf733
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@ -19,6 +19,7 @@ These are the factors that affect the results of a click:
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- the face you point at
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- where on that face you point
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- what button you click
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- whether or not you hold down the sneak key
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You will always be able to predict exactly the effect of the Rhotator Screwdriver.
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@ -85,3 +86,4 @@ Here are possible messages you can receive:
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- Cannot rotate node with paramtype2 == glasslikeliquidlevel
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- Unsupported node type: modname:nodename
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plus some more messages warning about protected areas or rotations performed or prevented by custom on_rotate() handlers.
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142
init.lua
142
init.lua
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@ -1,8 +1,8 @@
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rhotator = {}
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rhotator.mod_path = minetest.get_modpath(minetest.get_current_modname())
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local mod_path = minetest.get_modpath(minetest.get_current_modname())
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local matrix = dofile(rhotator.mod_path .. "/lib/matrix.lua")
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local matrix = dofile(mod_path .. "/lib/matrix.lua")
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-- constants
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@ -15,9 +15,13 @@ POS.X = 3
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NEG.X = 4
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NEG.Y = 5
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PRIMARY_BTN = 1
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SECONDARY_BTN = 2
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local PRIMARY_BTN = 1
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local SECONDARY_BTN = 2
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rhotator.PRIMARY_BTN = PRIMARY_BTN
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rhotator.SECONDARY_BTN = SECONDARY_BTN
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-- ============================================================
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-- helper variables
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local rot_matrices = {}
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@ -26,6 +30,7 @@ local dir_matrices = {}
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local huds = {}
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local hud_timeout_seconds = 3
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-- ============================================================
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-- init
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local function init_transforms()
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@ -94,6 +99,7 @@ end
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init_transforms()
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-- ============================================================
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-- helper functions
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local function cross_product(a, b)
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@ -180,13 +186,14 @@ local function vector_to_dir_index(vec)
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return (vec.y > 0) and POS.Y or NEG.Y
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end
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-- ============================================================
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-- hud functions
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local function hud_remove(player)
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local playername = player:get_player_name()
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local hud = huds[playername]
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if not hud then return end
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if os.time() < hud_duration_time + hud.time then
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if os.time() < hud_timeout_seconds + hud.time then
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return
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end
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player:hud_remove(hud.id)
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@ -225,71 +232,128 @@ local function notify(player, message)
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end)
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end
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-- ============================================================
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-- rhotator main
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local function interact(itemstack, player, pointed_thing, click)
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if pointed_thing.type ~= "node" then
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return
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end
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local node = minetest.get_node_or_nil(pointed_thing.under)
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local def = minetest.registered_nodes[node.name]
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if not node or not def then
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notify(player, "Unsupported node type: " .. node.name)
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return
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end
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if def.paramtype2 ~= "facedir" then
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notify(player, "Cannot rotate node with paramtype2 == " .. def.paramtype2)
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return
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end
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local function rotate_main(param2_rotation, player, pointed_thing, click, rot_index)
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local unit = extract_unit_vectors(player, pointed_thing)
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local current_pos = pointed_thing.under
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local message
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local transform = false
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local rotation = rot_matrices[1]
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local rotation = rot_matrices[rot_index]
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local controls = player:get_player_control()
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if click == PRIMARY_BTN then
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transform = dir_matrices[vector_to_dir_index(unit.thumb)]
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if controls.sneak then
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rotation = rot_matrices[3]
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notify(player, "Pulled closest edge (sneak + left click)")
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rotation = rot_matrices[(rot_index + 2) % 4]
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message = "Pulled closest edge (sneak + left click)"
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else
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notify(player, "Pushed closest edge (left click)")
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message = "Pushed closest edge (left click)"
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end
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else
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transform = dir_matrices[vector_to_dir_index(unit.back)]
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if controls.sneak then
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rotation = rot_matrices[3]
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notify(player, "Rotated pointed face counter-clockwise (sneak + right click)")
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rotation = rot_matrices[(rot_index + 2) % 4]
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message = "Rotated pointed face counter-clockwise (sneak + right click)"
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else
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notify(player, "Rotated pointed face clockwise (right click)")
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message = "Rotated pointed face clockwise (right click)"
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end
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end
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local start = get_facedir_transform(node.param2)
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local start = get_facedir_transform(param2_rotation)
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local stop = transform * rotation * transform:invert() * start
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return matrix_to_facedir(stop), message
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end
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minetest.set_node(pointed_thing.under,{
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name = node.name,
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param1 = node.param1,
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param2 = matrix_to_facedir(stop),
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})
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-- ============================================================
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-- param2 handlers
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local handlers = {}
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function handlers.facedir(node, player, pointed_thing, click)
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local rotation = node.param2 % 32 -- get first 5 bits
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local remaining = node.param2 - rotation
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local rotate_90deg_clockwise = 1
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local rotation_result, message = rotate_main(rotation, player, pointed_thing, click, rotate_90deg_clockwise)
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return rotation_result + remaining, message
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end
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handlers.colorfacedir = handlers.facedir
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-- ============================================================
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-- interaction
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local function interact(player, pointed_thing, click)
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if pointed_thing.type ~= "node" then
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return
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end
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local pos = pointed_thing.under
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if minetest.is_protected(pos, player:get_player_name()) then
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notify(player, "You're not authorized to alter nodes in this area")
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minetest.record_protection_violation(pos, player:get_player_name())
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return
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end
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local node = minetest.get_node(pointed_thing.under)
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local nodedef = minetest.registered_nodes[node.name]
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if not nodedef then
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notify(player, "Unsupported node type: " .. node.name)
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return
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end
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local handler = handlers[nodedef.paramtype2]
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-- Node provides a handler, so let the handler decide instead if the node can be rotated
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if nodedef.on_rotate then
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-- Copy pos and node because callback can modify it
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local pass_node = {name = node.name, param1 = node.param1, param2 = node.param2}
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local pass_pos = vector.new(pos)
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local result = nodedef.on_rotate(pass_pos, pass_node, player, click, node.param2)
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if result == true then
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notify(player, "Rotation reportedly performed by on_rotate()")
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return
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else
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notify(player, "Rotation disallowed by on_rotate() return value")
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return
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end
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elseif nodedef.on_rotate == false then
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notify(player, "Rotation prevented by on_rotate == false")
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return
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elseif nodedef.can_dig and not nodedef.can_dig(pos, player) then
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notify(player, "Rotation prevented by can_dig() checks")
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return
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elseif not handler then
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notify(player, "Cannot rotate node with paramtype2 == " .. nodedef.paramtype2)
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return
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end
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local new_param2, handler_message = handler(node, player, pointed_thing, click)
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node.param2 = new_param2
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minetest.swap_node(pos, node)
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minetest.check_for_falling(pos)
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if handler_message then
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notify(player, handler_message)
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end
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return
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end
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minetest.register_tool("rhotator:screwdriver", {
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description = "Rhotator Screwdriver (left-click pushes edge, right-click rotates face)",
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inventory_image = "rhotator.png",
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on_use = function(itemstack, player, pointed_thing)
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interact(itemstack, player, pointed_thing, PRIMARY_BTN)
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interact(player, pointed_thing, PRIMARY_BTN)
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return itemstack
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end,
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on_place = function(itemstack, player, pointed_thing)
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interact(itemstack, player, pointed_thing, SECONDARY_BTN)
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interact(player, pointed_thing, SECONDARY_BTN)
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return itemstack
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end,
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})
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