Fix 45-degree alignment

- Utilising a wrapper bone on which the position and rotation alignment animations are applied as a parent for the root bone with the offset animation, an offset with an armour stand placed at 45-degree angles will be properly axis-aligned
- Bounding box outline particles are now emitted at the hologram root, meaning that they inherit the offset and rotation of the hologram.
- The block validation wrong block overlay also has an alignment wrapper parent, to which animations are applied. Unfortunately, since the wrong block overlay is in a different geometry than the rest of the hologram, we can't set its parent to be the hologram root and as such animations must be separately defined for it.
- Also slightly optimised Molang

HoloPrint.js

@@ -162,6 +162,9 @@ export default class HoloPrint {
 			t.hologram_offset_x ??= 0;
 			t.hologram_offset_y ??= 0;
 			t.hologram_offset_z ??= 0;
+			t.structure_w = $[structureSize[0]];
+			t.structure_h = $[structureSize[1]];
+			t.structure_d = $[structureSize[2]];
 			if(q.distance_from_camera <= 10) {
 				t.render_hologram = true;
 				t.hologram_layer = -1;
@@ -170,9 +173,6 @@ export default class HoloPrint {
 				t.wrong_block_x = 0;
 				t.wrong_block_y = 0;
 				t.wrong_block_z = 0;
-				t.structure_w = $[structureSize[0]];
-				t.structure_h = $[structureSize[1]];
-				t.structure_d = $[structureSize[2]];
 			} else {
 				t.render_hologram ??= true;
 				t.hologram_layer ??= -1;
@@ -181,9 +181,6 @@ export default class HoloPrint {
 				t.wrong_block_x ??= 0;
 				t.wrong_block_y ??= 0;
 				t.wrong_block_z ??= 0;
-				t.structure_w ??= $[structureSize[0]];
-				t.structure_h ??= $[structureSize[1]];
-				t.structure_d ??= $[structureSize[2]];
 			}
 		}, { structureSize })); // particles need to access structure dimensions later, but their `v.` scope is different to the armour stand's, so these have to be temp variables.
 		entityDescription["geometry"]["hologram"] = "geometry.armor_stand.hologram";
@@ -221,7 +218,8 @@ export default class HoloPrint {
 			let particleName = `bounding_box_outline_${i}`;
 			entityDescription["particle_effects"][particleName] = `holoprint:${particleName}`;
 			hologramAnimationControllers["animation_controllers"]["controller.animation.armor_stand.hologram.bounding_box"]["states"]["default"]["particle_effects"].push({
-				"effect": particleName
+				"effect": particleName,
+				"locator": "hologram_root"
 			});
 		});
 

packTemplate/animations/armor_stand.hologram.animation.json

@@ -13,7 +13,7 @@ I also wonder if we could have a "rotation lock" option which makes the hologram
 		"animation.armor_stand.hologram.align": {
 			"loop": "hold_on_last_frame",
 			"bones": {
-				"hologram_root": {
+				"hologram_alignment_wrapper": {
 					"position": [
 						// Snap to nearest block. Unfortunately looks glitchy when moving since it takes a tick for the position to update.
 						// x and z of armor stands is +0.5
@@ -26,6 +26,18 @@ I also wonder if we could have a "rotation lock" option which makes the hologram
 						"-(q.body_y_rotation - 90 * math.floor(q.body_y_rotation / 90))", // Snap to 90-deg directions
 						0
 					]
+				},
+				"wrong_block_overlay_alignment_wrapper": {
+					"position": [
+						0,
+						"-16 * (q.position(1) - math.floor(q.position(1)))",
+						0
+					],
+					"rotation": [
+						0,
+						"-(q.body_y_rotation - 90 * math.floor(q.body_y_rotation / 90))",
+						0
+					]
 				}
 			}
 		},
@@ -38,6 +50,13 @@ I also wonder if we could have a "rotation lock" option which makes the hologram
 						"t.hologram_offset_y * 16",
 						"t.hologram_offset_z * 16"
 					]
+				},
+				"wrong_block_overlay": {
+					"position": [
+						"t.hologram_offset_x * 16",
+						"t.hologram_offset_y * 16",
+						"t.hologram_offset_z * 16"
+					]
 				}
 			}
 		},

packTemplate/models/entity/armor_stand.hologram.geo.json

@@ -7,9 +7,15 @@
 				"visible_bounds_offset": [0, 1.5, 0] // do we need this?!
 			},
 			"bones": [
+				{
+					"name": "hologram_alignment_wrapper"
+				},
 				{
 					"name": "hologram_root",
-					"pivot": [0, 0, 0]
+					"parent": "hologram_alignment_wrapper",
+					"locators": {
+						"hologram_root": [0, 0, 0]
+					}
 				}
 			]
 		},
@@ -20,8 +26,12 @@
 				"texture_height": 16
 			},
 			"bones": [
+				{
+					"name": "wrong_block_overlay_alignment_wrapper"
+				},
 				{
 					"name": "wrong_block_overlay",
+					"parent": "wrong_block_overlay_alignment_wrapper",
 					"cubes": [
 						{
 							"origin": [-8, 0, -8],

packTemplate/particles/bounding_box_outline.json

@@ -23,7 +23,7 @@
 				"expiration_expression": "!t.render_hologram"
 			},
 			"minecraft:particle_motion_parametric": {
-				"relative_position": ["(v.x ?? (v.dir == 0? v.size : 0)) - 0.5 - t.hologram_offset_x", "(v.y ?? v.dir == 1? v.size : 0) + math.floor(q.position(1)) - q.position(1) + t.hologram_offset_y", "(v.z ?? (v.dir == 2? v.size : 0)) - 0.5 + t.hologram_offset_z"] // we need to apply the y-snapping and offset here as well.
+				"relative_position": ["-(v.x ?? (v.dir == 0? v.size : 0)) + 0.5", "-(v.y ?? v.dir == 1? v.size : 0)", "(v.z ?? (v.dir == 2? v.size : 0)) - 0.5"]
 			},
 			"minecraft:particle_appearance_billboard": {
 				"size": ["v.size", 0.01],