Add the intro cutscene, a start to the map, and various other things.

mods/artifact_hud/init.lua

@@ -50,7 +50,7 @@ local function interpolate(ref, target, t, x1, y1, x2, y2)
     local eased_t = bezier_ease(t, x1 or 0, y1 or 0, x2 or 1, y2 or 1)
     return ref + (target - ref) * eased_t
 end
-
+artifact.interpolate = interpolate
 
 function ns.register_hud_type(def)
     ns.hud_types[def.name] = setmetatable(def, {__index = ns.Element})
@@ -184,7 +184,7 @@ minetest.register_globalstep(function(dtime)
 end)
 
 function ns.color_to_number(color)
-    return tonumber(string.format("0x%.2x%.2x%.2x%.2x", color.r, color.g, color.b, color.a))
+    return tonumber(string.format("0x%.2x%.2x%.2x", color.r, color.g, color.b))
 end
 
 ns.register_hud_type {
@@ -193,12 +193,14 @@ ns.register_hud_type {
     field_types = {
         offset = "vec2",
         pos = "vec2",
+        size = "vec2",
         color = "color"
     },
     defaults = {
         dir = 0,
         align = {x=0, y=0},
         offset = {x=0, y=0},
+        size = {x=1, y=1},
         color = {r = 0xff, g = 0xff, b = 0xff, a = 0xff}
     },
     add = function(e, m)
@@ -209,6 +211,7 @@ ns.register_hud_type {
             alignment = e.align,
             offset = e.offset,
             scale = {x=100, y=100},
+            size = e.size,
             text = e.text,
             number = ns.color_to_number(e.color)
         }