Detect tile under foot

scenes/NPC/Rosa.tscn

@@ -6,11 +6,10 @@
 [ext_resource type="Texture2D" uid="uid://i34vweii6joy" path="res://textures/rosa.png" id="4_qdjyy"]
 
 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_ls7r8"]
-radius = 9.35148
+radius = 0.331611
-height = 31.3716
+height = 0.804274
 
 [sub_resource type="QuadMesh" id="QuadMesh_dyaax"]
-size = Vector2(32, 32)
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_fegux"]
 render_priority = 0
@@ -23,15 +22,15 @@ shader_parameter/npcTexture = ExtResource("4_qdjyy")
 script = ExtResource("1_3g383")
 
 [node name="Rosa Camera" type="Camera3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 0.130388, 0.991463, 0, -0.991463, 0.130388, 0, 30.9255, 0)
+transform = Transform3D(1, 0, 0, 0, 0.130388, 0.991463, 0, -0.991463, 0.130388, 0, 3.14994, 0.404846)
 fov = 30.0
 script = ExtResource("2_tr66j")
 
 [node name="CollisionShape3D" type="CollisionShape3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 5.93694)
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.126485)
 shape = SubResource("CapsuleShape3D_ls7r8")
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 0.173648, 0.984808, 0, -0.984808, 0.173648, 0, 0, 0)
+transform = Transform3D(1, 0, 0, 0, 0.173648, 0.984808, 0, -0.984808, 0.173648, 0.00989294, 0, 0)
 mesh = SubResource("QuadMesh_dyaax")
 surface_material_override/0 = SubResource("ShaderMaterial_fegux")

scenes/NPC/TestNPC.tscn

@@ -4,14 +4,13 @@
 [ext_resource type="Shader" path="res://shaders/NPC Shader.gdshader" id="1_xgcv1"]
 [ext_resource type="Texture2D" uid="uid://i34vweii6joy" path="res://textures/rosa.png" id="2_shls4"]
 
-[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_32cew"]
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_dw1sy"]
-radius = 9.35148
+radius = 0.331611
-height = 31.3716
+height = 0.804274
 
-[sub_resource type="QuadMesh" id="QuadMesh_evcrc"]
+[sub_resource type="QuadMesh" id="QuadMesh_xhkdv"]
-size = Vector2(32, 32)
 
-[sub_resource type="ShaderMaterial" id="ShaderMaterial_mgbpu"]
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_l4utx"]
 render_priority = 0
 shader = ExtResource("1_xgcv1")
 shader_parameter/frame = 0
@@ -22,10 +21,10 @@ shader_parameter/npcTexture = ExtResource("2_shls4")
 script = ExtResource("1_61g2d")
 
 [node name="CollisionShape3D" type="CollisionShape3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 5.93694)
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.126485)
-shape = SubResource("CapsuleShape3D_32cew")
+shape = SubResource("CapsuleShape3D_dw1sy")
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 0.173648, 0.984808, 0, -0.984808, 0.173648, 0, 0, 0)
+transform = Transform3D(1, 0, 0, 0, 0.173648, 0.984808, 0, -0.984808, 0.173648, 0.00989294, 0, 0)
-mesh = SubResource("QuadMesh_evcrc")
+mesh = SubResource("QuadMesh_xhkdv")
-surface_material_override/0 = SubResource("ShaderMaterial_mgbpu")
+surface_material_override/0 = SubResource("ShaderMaterial_l4utx")

scenes/TestScene.tscn

@@ -23,10 +23,10 @@ sky = SubResource("Sky_weucl")
 environment = SubResource("Environment_18twt")
 
 [node name="Rosa" parent="." instance=ExtResource("1_3u2u0")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -24.3489, 25.4112, -33.4617)
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.651853, 0.684572, -0.0593004)
 
 [node name="TestNpc" parent="." instance=ExtResource("2_6f3lj")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 15.919, 28.7961, 27.6146)
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.545907, 0.459578, -0.399262)
 
 [node name="OmniLight3D" type="OmniLight3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -38.1432, 54.7591, -25.7675)

scripts/OverworldEntity.gd

@@ -7,12 +7,14 @@ enum Direction {
 	EAST
 }
 
-var speed:float = 3200;
+var speed:float = 150;
-var friction:float = 7;
+var friction:float = 8.5;
-var gravity:float = 150;
+var gravity:float = 30;
 
 var direction = Direction.SOUTH;
 var meshInstance:MeshInstance3D;
+var underFootTile:int = -1;
+var underFootPosition:Vector3;
 
 func getDirectionVector() -> Vector3:
 	match direction:
@@ -33,9 +35,58 @@ func updateMovement(delta) -> void:
 func updateOverworldLogic(delta) -> void:
 	pass
 
+# Private methods
+func _updateTileData() -> void:
+	# ray cast down
+	var offset = Vector3(0, 0, 0.426);
+	var query = PhysicsRayQueryParameters3D.create(
+		position + offset,
+		position + Vector3(0, -1, 0) + offset
+	)
+	query.collide_with_areas = true
+	query.exclude = [self]
+
+	var result = get_world_3d().direct_space_state.intersect_ray(query)
+	if !result or !result.collider:
+		return;
+
+	var collider = result.collider;
+	var colliderMesh = collider.get_node("../");
+	if !colliderMesh or !colliderMesh.mesh or colliderMesh.mesh.get_surface_count() == 0:
+		return;
+
+	# Get the face index (triangle)
+	var arrays = colliderMesh.mesh.surface_get_arrays(0);
+	var indiceIdx = result.face_index * 3;
+	
+	# Get each indice of the triangle
+	var index0 = arrays[Mesh.ARRAY_INDEX][indiceIdx+0];
+	var index1 = arrays[Mesh.ARRAY_INDEX][indiceIdx+1];
+	var index2 = arrays[Mesh.ARRAY_INDEX][indiceIdx+2];
+	
+	# Get each uv of each indice
+	var uv0:Vector2 = arrays[Mesh.ARRAY_TEX_UV][index0];
+	var uv1:Vector2 = arrays[Mesh.ARRAY_TEX_UV][index1];
+	var uv2:Vector2 = arrays[Mesh.ARRAY_TEX_UV][index2];
+	
+	# Determine the lowest texture coordinate
+	var min = Vector2(min(uv0.x, uv1.x, uv2.x), min(uv0.y, uv1.y, uv2.y));
+	
+	# Convert to column/row
+	var w = 768;
+	var h = w;
+	var tw = 48;
+	var th = tw;
+	var column = int(roundf(min.x * w)) / 48;
+	var row = int(roundf(min.y * h)) / 48;
+	var columns = 768 / 48;
+	underFootPosition = result.position;
+	underFootTile = column % columns + row * columns;
+
 # Events
 func _ready() -> void:
 	meshInstance = get_node("MeshInstance3D")
+	_updateTileData();
 	pass
 
 func _process(delta:float) -> void:
@@ -46,16 +97,17 @@ func _process(delta:float) -> void:
 	var material:ShaderMaterial = meshInstance.get_surface_override_material(0)
 	material.set_shader_parameter("direction", direction)
 
-
 func _physics_process(delta: float) -> void:
+	# Update movement
+	updateMovement(delta);
+
 	# Gravity and friction
 	if !is_on_floor():
 		velocity.y -= gravity * delta;
 	else:
 		velocity += -(velocity * friction * delta);
-
+		if velocity.length() != 0:
-	# Update movement
+			_updateTileData();
-	updateMovement(delta)
 	
 	# Update character controller.
 	move_and_slide();

scripts/RosaCamera.gd

@@ -1,6 +1,7 @@
 extends Camera3D
 
-var PIXEL_SCALE:float = 4.0;
+const PIXEL_SCALE:float = 4.0;
+const WORLD_UNITS:float = 32.0;
 
 func _ready() -> void:
 	pass
@@ -10,7 +11,7 @@ func _process(delta: float) -> void:
 	var z:float = (
 		tan((deg_to_rad(180) - deg_to_rad(fov)) / 2.0) *
 		(get_viewport().size.y / 2.0)
-	) / PIXEL_SCALE;
+	) / PIXEL_SCALE / WORLD_UNITS;
 	
 	var rosa = get_node("..");
 	var look = rosa.position;

scripts/RosaController.gd

@@ -1,6 +1,6 @@
 extends "res://scripts/OverworldEntity.gd"
 
-var interactRange = 22;
+var interactRange = 0.7;
 
 func updateOverworldLogic(delta) -> void:
 	# Check if interact button is pressed

shaders/Map Shader.gdshader

@@ -4,11 +4,10 @@ render_mode cull_disabled;
 uniform sampler2D tileset : filter_nearest;
 
 void vertex() {
-	// Called for every vertex the material is visible on.
 }
 
 void fragment() {
-	vec4 textureColor = texture(tileset, UV);
+	vec4 textureColor = texture(tileset, UV) * COLOR;
 
 	if(textureColor.a == 0.0)
 		discard;

shaders/NPC Shader.gdshader

@@ -7,27 +7,8 @@ uniform int direction;
 
 const int FRAMES = 3;
 const int DIRECTIONS = 4;
-//const bool BILLBOARD_ROTATION_LOCK = false;
 
 void vertex() {
-	//if(BILLBOARD_ROTATION_LOCK) {
-	    //mat4 modified_model_view = VIEW_MATRIX * mat4(
-	        //INV_VIEW_MATRIX[0],
-	        //INV_VIEW_MATRIX[1],
-	        //INV_VIEW_MATRIX[2],
-	        //MODEL_MATRIX[3]
-	    //);
-	    //MODELVIEW_MATRIX = modified_model_view;
-	//} else {
-	    //mat4 modified_model_view = VIEW_MATRIX * mat4(
-	        //INV_VIEW_MATRIX[0],
-	        //MODEL_MATRIX[1],
-	        //MODEL_MATRIX[2],
-	        //MODEL_MATRIX[3]
-	    //);
-	    //MODELVIEW_MATRIX = modified_model_view;
-	//}
-
 	vec2 tileSize = vec2(1.0 / float(FRAMES), 1.0 / float(DIRECTIONS));
 	vec2 topLeft = tileSize * vec2(float(frame % FRAMES), float(direction % DIRECTIONS));
 	vec2 bottomRight = topLeft + tileSize;