rolling fiend automatically detects floor surface and can take inside corners again

maps/cave.tscn

@@ -306,28 +306,30 @@ right_down_boundry = 3.0
 speed = 60
 
 [node name="RollingFiend" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 144, 100 )
+position = Vector2( 144, 96 )
 
 [node name="RollingFiend3" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 128, 28 )
+position = Vector2( 128, 24 )
+move_speed = 70.0
 
 [node name="RollingFiend4" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 168, 42 )
+position = Vector2( 160, 38 )
+move_speed = 70.0
 
 [node name="RollingFiend6" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 384, 44 )
+position = Vector2( 384, 40 )
 
 [node name="RollingFiend7" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 440, 92 )
+position = Vector2( 432, 88 )
 
 [node name="RollingFiend8" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 584, 28 )
+position = Vector2( 584, 24 )
 
 [node name="RollingFiend10" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 608, 124 )
+position = Vector2( 600, 120 )
 
 [node name="RollingFiend2" parent="Enemies" instance=ExtResource( 13 )]
-position = Vector2( 80, 148 )
+position = Vector2( 72, 144 )
 
 [node name="Tentacle2" parent="Enemies" instance=ExtResource( 16 )]
 position = Vector2( 176, 104 )

objects/enemy/rolling_fiend.gd

@@ -4,19 +4,29 @@ export var move_speed: float = 0.0
 export var clockwise: bool = false
 
 onready var floor_test = Physics2DShapeQueryParameters.new()
+onready var test_shape = $FloorTestShape
 
-var floor_direction = Vector2.DOWN
+var floor_direction = Vector2.ZERO
 
 func _ready():
 	if clockwise:
 		$AnimatedSprite.flip_h = true
-	floor_test.set_shape($FloorTestShape.shape)
+	floor_test.set_shape(test_shape.shape)
 	floor_test.collision_layer = 1
+	for dir in [Vector2.DOWN, Vector2.UP, Vector2.LEFT, Vector2.RIGHT]:
+		if is_on_surface(dir):
+			floor_direction = dir
+			break
 
 func _physics_process(delta):
 	var rot_dir = -1.5708 if clockwise else 1.5708
-	var space_state = get_world_2d().direct_space_state
+	if !is_on_surface(floor_direction):
-	floor_test.transform = global_transform.translated(floor_direction)
-	if space_state.collide_shape(floor_test, 1).empty():
 		floor_direction = floor_direction.rotated(-rot_dir)
+	elif is_on_surface(floor_direction.rotated(rot_dir)):
+		floor_direction = floor_direction.rotated(rot_dir)
 	position += floor_direction.rotated(rot_dir) * move_speed * delta
+
+func is_on_surface(dir):
+	var space_state = get_world_2d().direct_space_state
+	floor_test.transform = test_shape.global_transform.translated(dir)
+	return space_state.collide_shape(floor_test, 1).size() > 0

objects/enemy/rolling_fiend.tscn

@@ -4,9 +4,6 @@
 [ext_resource path="res://objects/enemy/rolling_fiend.gd" type="Script" id=3]
 [ext_resource path="res://scripts/1px_border.gdshader" type="Shader" id=4]
 
-[sub_resource type="RectangleShape2D" id=8]
-extents = Vector2( 4, 4 )
-
 [sub_resource type="ShaderMaterial" id=5]
 shader = ExtResource( 4 )
 shader_param/border_color = Color( 0, 0, 0, 1 )
@@ -28,6 +25,9 @@ animations = [ {
 "speed": 10.0
 } ]
 
+[sub_resource type="RectangleShape2D" id=8]
+extents = Vector2( 3.5, 3.5 )
+
 [sub_resource type="RectangleShape2D" id=4]
 extents = Vector2( 4, 4 )
 
@@ -36,16 +36,19 @@ script = ExtResource( 3 )
 score_for_killing = 40
 move_speed = 50.0
 
-[node name="FloorTestShape" type="CollisionShape2D" parent="."]
-shape = SubResource( 8 )
-
 [node name="AnimatedSprite" type="AnimatedSprite" parent="."]
 material = SubResource( 5 )
+position = Vector2( 4, 4 )
 frames = SubResource( 3 )
 frame = 1
 playing = true
 
+[node name="FloorTestShape" type="CollisionShape2D" parent="."]
+position = Vector2( 4, 4 )
+shape = SubResource( 8 )
+
 [node name="Hitbox" type="Area2D" parent="."]
+position = Vector2( 4, 4 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="Hitbox"]
 shape = SubResource( 4 )