add grid dot system to raycast

app/assets/materials/grid.gdshader

@@ -0,0 +1,46 @@
+shader_type spatial;
+
+render_mode unshaded, cull_back;
+
+uniform float dot_size: hint_range(0.0, 1.0, 0.01) = 0.5;
+uniform float dot_falloff: hint_range(0.0, 0.4, 0.001) = 0.1;
+uniform float size: hint_range(1.0, 32.0, 0.1) = 16.0;
+uniform vec2 dot_offset = vec2(0.0);
+uniform int supersampling: hint_range(0, 10, 1) = 1;
+
+vec2 random(vec2 st){
+    return vec2(fract(sin(dot(st.xy, vec2(12.9898,78.233))) * 43758.5453123), fract(sin(dot(st.xy, vec2(-40.644))) * 87502.29935));
+}
+
+float sdf_sphere(vec2 position, float center_dist) {
+	return length(position) - max(0.0, dot_size / size - center_dist * dot_falloff);
+}
+
+vec2 sdf_repeat(vec2 position) {
+	float inv_size = 1.0 / (size * 2.0);
+	return fract(position * size) / size - inv_size;
+}
+
+void fragment() {
+	float total_dist = 0.0;
+	
+	for(int i = 0; i < supersampling; i++) {
+		float center_dist = distance(UV, vec2(0.5, 0.5));
+		vec2 rand = random(vec2(float(i))) * 0.004 * (0.5 - center_dist);
+		float dist = sdf_sphere(sdf_repeat(UV - dot_offset - rand), center_dist);
+		if (dist <= 0.0) {
+			total_dist += 1.0 / float(supersampling);
+		}
+	}
+	
+	ALBEDO = vec3(1.0);
+	ALPHA = total_dist;
+	
+	//if(dist <= 0.0) {
+		//ALBEDO = vec3(1.0);
+	//} else {
+		//ALBEDO = vec3(1.0);
+		//ALPHA = dist;
+	//}
+}
+

app/assets/materials/grid.tres

@@ -0,0 +1,13 @@
+[gd_resource type="ShaderMaterial" load_steps=2 format=3 uid="uid://bb4kgiocswfv7"]
+
+[ext_resource type="Shader" path="res://assets/materials/grid.gdshader" id="1_oebjc"]
+
+[resource]
+resource_local_to_scene = true
+render_priority = 8
+shader = ExtResource("1_oebjc")
+shader_parameter/dot_size = 0.12
+shader_parameter/dot_falloff = 0.024
+shader_parameter/size = 12.0
+shader_parameter/dot_offset = Vector2(0, 0)
+shader_parameter/supersampling = 8

app/content/main.tscn

@@ -45,6 +45,9 @@ transform = Transform3D(0.967043, 0.24582, -0.0663439, -0.0663439, 0.494837, 0.8
 [node name="MiddleTip" parent="XROrigin3D/XRControllerLeft" index="6"]
 transform = Transform3D(0.98042, 0.196912, 0.00149799, 0.001498, -0.015065, 0.999885, 0.196912, -0.980305, -0.0150651, -0.00327212, -0.00771427, -0.176318)
 
+[node name="Palm" parent="XROrigin3D/XRControllerLeft" index="7"]
+transform = Transform3D(1, 3.12364e-06, -3.13861e-06, -3.12371e-06, 1, -1.97886e-05, 3.13854e-06, 1.97889e-05, 1, 0.0307807, -0.0419721, -0.0399505)
+
 [node name="XRControllerRight" parent="XROrigin3D" instance=ExtResource("7_0b3tc")]
 unique_name_in_owner = true
 transform = Transform3D(0.999999, -1.39635e-11, 0, 1.31553e-10, 1, 0, 0, 0, 1, 0.336726, 0.575093, -0.437942)

app/content/system/controller_left/controller_left.gd

@@ -23,7 +23,13 @@ const Miniature = preload ("res://content/system/miniature/miniature.gd")
 @onready var ray: RayCast3D = $Raycast
 @onready var quick_actions = $Palm/QuickActions
 
-var hand_active = false
+var hand_active = false:
+	set(value):
+		hand_active = value
+
+		if pointer != null:
+			pointer.set_physics_process(value)
+
 var initiator: Initiator = Initiator.new()
 var collide: Collide
 var pointer: Pointer

app/content/system/controller_right/controller_right.gd

@@ -16,7 +16,12 @@ const Miniature = preload ("res://content/system/miniature/miniature.gd")
 @onready var thumb_tip = $ThumbTip
 @onready var middle_tip = $MiddleTip
 
-var hand_active = false
+var hand_active = false:
+	set(value):
+		hand_active = value
+
+		if pointer != null:
+			pointer.set_physics_process(value)
 var initiator: Initiator = Initiator.new()
 var collide: Collide
 var pointer: Pointer

app/content/system/raycast/raycast.gd

@@ -7,9 +7,12 @@ const Initiator = preload ("res://lib/utils/pointer/initiator.gd")
 @onready var default_cursor: Sprite3D = $Cursor/DefaultCursor
 @onready var retro_cursor: Sprite3D = $Cursor/RetroCursor
 @onready var decal: Decal = $Decal
+@onready var grid: MeshInstance3D = $Grid
+@onready var wall_collider: RayCast3D = $WallCollider
 
 @export var is_right: bool = true
 @export var with_decal: bool = false
+@export var with_grid: bool = false
 
 @onready var pointer: Pointer
 @onready var visual_ray: MeshInstance3D = $Ray
@@ -38,17 +41,34 @@ func _ready():
 	)
 
 	R.effect(func(_arg):
-		match Store.settings.state.cursor_style:
+		var style=Store.settings.state.cursor_style
-			1:
+
-				default_cursor.visible=false
+		default_cursor.visible=style == 0
-				retro_cursor.visible=true
+		retro_cursor.visible=style == 1
-			0, _:
-				default_cursor.visible=true
-				retro_cursor.visible=false
 	)
 
 func _physics_process(_delta):
 	_handle_cursor()
+	_handle_grid()
+
+func _process(delta):
+	if grid.visible:
+		grid.material_override.set_shader_parameter("dot_offset", TransformTools.plane_2d_coords(grid.global_transform) / grid.mesh.size.x)
+
+func _handle_grid():
+	var collider = wall_collider.get_collider()
+
+	if collider == null:
+		grid.visible = false
+
+	grid.visible = with_grid
+
+	grid.global_position = wall_collider.get_collision_point() + wall_collider.get_collision_normal() * 0.01
+
+	if abs(wall_collider.get_collision_normal().dot(Vector3.UP)) > 0.9:
+		grid.global_transform.basis = Basis.looking_at(wall_collider.get_collision_normal(), Vector3.FORWARD, true)
+	else:
+		grid.global_transform.basis = Basis.looking_at(wall_collider.get_collision_normal(), Vector3.UP, true)
 
 func _handle_cursor():
 	var collider = get_collider()
@@ -69,6 +89,7 @@ func _handle_cursor():
 
 	cursor.visible = true
 	decal.visible = false
+	
 	cursor.global_transform.origin = get_collision_point() + get_collision_normal() * 0.001 # offset to avoid z-fighting
 
 	if abs(get_collision_normal().dot(Vector3.UP)) > 0.9:

app/content/system/raycast/raycast.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=8 format=3 uid="uid://dscp8x0ari57n"]
+[gd_scene load_steps=10 format=3 uid="uid://dscp8x0ari57n"]
 
 [ext_resource type="Texture2D" uid="uid://bl33klueufwja" path="res://assets/cursors/pointer.png" id="1_2f2iv"]
 [ext_resource type="Script" path="res://content/system/raycast/raycast.gd" id="1_gp8nv"]
@@ -6,6 +6,7 @@
 [ext_resource type="Shader" path="res://content/system/raycast/raycast.gdshader" id="3_lpfe7"]
 [ext_resource type="Texture2D" uid="uid://cy5dna78q6tn6" path="res://assets/models/ray/ray.png" id="4_fe8o8"]
 [ext_resource type="ArrayMesh" uid="uid://d3kriab522o2w" path="res://assets/models/ray/ray.obj" id="5_3o4gy"]
+[ext_resource type="Material" uid="uid://bb4kgiocswfv7" path="res://assets/materials/grid.tres" id="7_tnbkv"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_ov0gt"]
 render_priority = 0
@@ -13,6 +14,9 @@ shader = ExtResource("3_lpfe7")
 shader_parameter/albedo = Color(1, 1, 1, 1)
 shader_parameter/texture_albedo = ExtResource("4_fe8o8")
 
+[sub_resource type="PlaneMesh" id="PlaneMesh_cq16e"]
+orientation = 2
+
 [node name="Raycast" type="RayCast3D"]
 transform = Transform3D(0.999999, -1.39624e-11, 0, 9.48108e-12, 0.999999, 0, 0, 4.54747e-13, 0.999998, 0, 0, 0)
 target_position = Vector3(0, 0, -5)
@@ -49,3 +53,11 @@ texture = ExtResource("3_f5ibs")
 transform = Transform3D(1, -1.39624e-11, -6.10317e-19, 0, -4.37114e-08, 1, -1.39624e-11, -1, -4.37114e-08, 0, 0, -0.0182334)
 material_override = SubResource("ShaderMaterial_ov0gt")
 mesh = ExtResource("5_3o4gy")
+
+[node name="Grid" type="MeshInstance3D" parent="."]
+material_override = ExtResource("7_tnbkv")
+mesh = SubResource("PlaneMesh_cq16e")
+
+[node name="WallCollider" type="RayCast3D" parent="."]
+target_position = Vector3(0, 0, -10)
+collision_mask = 16

app/lib/utils/transform_tools.gd

@@ -1,5 +1,13 @@
 class_name TransformTools
 
+static func plane_2d_coords(transform: Transform3D) -> Vector2:
+	var point = transform.origin
+
+	transform.origin = Vector3.ZERO
+	point = transform.inverse() * point
+
+	return Vector2( - point.x, point.y)
+
 ## Calculate the transform that would transform the source position, direction and up vector to the target position, direction and up vector
 ## Basically a bit more fancy Inputs for a Transform3D
 static func calc_delta_transform(source_pos: Vector3, source_dir: Vector3, source_up: Vector3, target_pos: Vector3, target_dir: Vector3, target_up: Vector3) -> Transform3D:

app/test/content/grid_shader.gd

@@ -0,0 +1,9 @@
+@tool
+extends Node3D
+
+const GridShader = preload ("res://assets/materials/grid.tres")
+
+@onready var mesh = $MeshInstance3D
+
+func _process(_delta):
+	GridShader.set_shader_parameter("dot_offset", TransformTools.plane_2d_coords(mesh.global_transform))

app/test/content/grid_shader.tscn

@@ -0,0 +1,15 @@
+[gd_scene load_steps=4 format=3 uid="uid://d26xg5okbaen6"]
+
+[ext_resource type="Script" path="res://test/content/grid_shader.gd" id="1_jgxlt"]
+[ext_resource type="Material" uid="uid://bb4kgiocswfv7" path="res://assets/materials/grid.tres" id="2_siin6"]
+
+[sub_resource type="PlaneMesh" id="PlaneMesh_atwo6"]
+size = Vector2(1, 1)
+
+[node name="Node3D" type="Node3D"]
+script = ExtResource("1_jgxlt")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+transform = Transform3D(-0.843227, -0.537538, -0.00456947, -0.18903, 0.28855, 0.93862, -0.503225, 0.792333, -0.344923, 0.968812, 1.30895, -0.0715666)
+material_override = ExtResource("2_siin6")
+mesh = SubResource("PlaneMesh_atwo6")