initial commit: ice serpentHEADmaster

1 files changed, 62 insertions, 0 deletions

diff --git a/utils.lua b/utils.lua
new file mode 100644
index 0000000..5242949
--- /dev/null
+++ b/utils.lua
@@ -0,0 +1,62 @@
+--[[
+Eleficery  --- Elemental trinkets for minetest game
+Copyright © 2026 bdunahu <bdunahu@operationnull.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+--]]
+
+eleficery.is_water = function(pos)
+    return core.get_node(pos).name == "default:water_source"
+end
+
+eleficery.snap_to_cardinal = function(look_dir)
+    local d = { x = look_dir.x, y = 0, z = look_dir.z }
+
+    if vector.length(d) == 0 then return {x=0, y=0, z=1} end
+
+    if math.abs(d.x) > math.abs(d.z) then
+        d.z = 0
+        d.x = d.x > 0 and 1 or -1
+    else
+        d.x = 0
+        d.z = d.z > 0 and 1 or -1
+    end
+
+    return d
+end
+
+eleficery.get_held_dir_to_player = function(player)
+    -- 'to_player' because this gives a position relative
+    -- to the player's perspective
+    local ctrl = player:get_player_control()
+
+    local zero = {x=0, y=0, z=0}
+    local look_dir = player:get_look_dir(placer)
+
+    local forward = eleficery.snap_to_cardinal(look_dir)
+    local back = vector.multiply(forward, -1)
+    local up = {x=0, y=1, z=0}
+    local right = vector.cross(up, forward)
+    local left = vector.multiply(right, -1)
+
+    if ctrl.up then
+        return forward
+    elseif ctrl.down then
+        return back
+    elseif ctrl.left then
+        return left
+    elseif ctrl.right then
+        return right
+    end
+end