Prototype levels of detail per chunk

6 files changed, 103 insertions, 3 deletions

diff --git a/Chunk.gd b/Chunk.gd
new file mode 100644
index 0000000..7c5c1c3
--- /dev/null
+++ b/Chunk.gd
@@ -0,0 +1,16 @@
+extends Area
+
+enum LOD {DISTANCE,MID,CLOSE}
+var lod = -1
+
+func lod_update():
+    for obj in $"gen_tree".get_children():
+        match lod:
+            LOD.CLOSE:
+                obj.lod_close()
+            LOD.MID:
+                obj.lod_mid()
+            LOD.DISTANCE:
+                obj.lod_distance()
+            _:
+                obj.lod_distance()
diff --git a/Chunk.tscn b/Chunk.tscn
index 0437a7e..8f5ea84 100644
--- a/Chunk.tscn
+++ b/Chunk.tscn
@@ -1,5 +1,6 @@
 [gd_scene load_steps=7 format=2]
 
+[ext_resource path="res://Chunk.gd" type="Script" id=1]
 [ext_resource path="res://ChunkedCSGMesh.gd" type="Script" id=3]
 
 [sub_resource type="SphereShape" id=1]
@@ -19,6 +20,7 @@ size = Vector2( 98, 98 )
 [node name="Chunk" type="Area"]
 collision_layer = 32
 collision_mask = 0
+script = ExtResource( 1 )
 
 [node name="Size" type="CollisionShape" parent="."]
 shape = SubResource( 1 )
diff --git a/Rock.gd b/Rock.gd
new file mode 100644
index 0000000..577e626
--- /dev/null
+++ b/Rock.gd
@@ -0,0 +1,18 @@
+extends StaticBody
+
+onready var collision_enabled = self.collision_layer
+
+func lod_distance():
+    $"MeshInstance".visible = false
+    $"MeshInstance2".visible = true
+    self.collision_layer = 0
+
+func lod_mid():
+    $"MeshInstance".visible = true
+    $"MeshInstance2".visible = false
+    self.collision_layer = 0
+
+func lod_close():
+    $"MeshInstance".visible = true
+    $"MeshInstance2".visible = false
+    self.collision_layer = collision_enabled
diff --git a/Rock.tscn b/Rock.tscn
index 0a80df3..f3c7316 100644
--- a/Rock.tscn
+++ b/Rock.tscn
@@ -1,5 +1,6 @@
-[gd_scene load_steps=8 format=2]
+[gd_scene load_steps=10 format=2]
 
+[ext_resource path="res://Rock.gd" type="Script" id=1]
 [ext_resource path="res://ChunkedMeshInstance.gd" type="Script" id=2]
 
 [sub_resource type="ConvexPolygonShape" id=2]
@@ -28,14 +29,25 @@ normal_texture = SubResource( 5 )
 [sub_resource type="PrismMesh" id=1]
 size = Vector3( 5, 10, 5 )
 
+[sub_resource type="CubeMesh" id=9]
+size = Vector3( 5, 10, 5 )
+
 [node name="Rock" type="StaticBody"]
 collision_layer = 8
 collision_mask = 0
+script = ExtResource( 1 )
 
 [node name="CollisionShape" type="CollisionShape" parent="."]
 shape = SubResource( 2 )
 
 [node name="MeshInstance" type="MeshInstance" parent="."]
+visible = false
 material_override = SubResource( 6 )
 script = ExtResource( 2 )
 _mesh = SubResource( 1 )
+
+[node name="MeshInstance2" type="MeshInstance" parent="."]
+visible = false
+material_override = SubResource( 6 )
+script = ExtResource( 2 )
+_mesh = SubResource( 9 )
diff --git a/World.gd b/World.gd
index 97f0a09..af2ba6a 100644
--- a/World.gd
+++ b/World.gd
@@ -4,7 +4,11 @@ export(NodePath) var traveler = null
 onready var _traveler = get_node(traveler)
 export var acceleration = 10.0
 
-onready var chunk_render_distance = $"ChunkRenderDistance/Radius".shape.radius
+onready var lod_distance = $"ChunkRenderDistance"
+onready var lod_mid = $"ChunkRenderMid"
+onready var lod_close = $"ChunkRenderClose"
+
+onready var chunk_render_distance = lod_distance.get_node("Radius").shape.radius
 
 onready var chunk_half_size = $"Chunks/Chunk/Size".shape.radius
 onready var chunk_size = chunk_half_size * 2.0
@@ -13,9 +17,32 @@ func _ready():
     ChunkLoader.world = self
     ChunkGen.chunk_half_size = self.chunk_half_size
 
+func _on_ChunkRenderDistance_area_entered(area:Area):
+    if area.lod < area.LOD.DISTANCE:
+        area.lod = area.LOD.DISTANCE
+        area.lod_update()
+
+func _on_ChunkRenderMid_area_entered(area:Area):
+    if area.lod < area.LOD.MID:
+        area.lod = area.LOD.MID
+        area.lod_update()
+
+func _on_ChunkRenderClose_area_entered(area:Area):
+    if area.lod < area.LOD.CLOSE:
+        area.lod = area.LOD.CLOSE
+        area.lod_update()
+
 func _on_ChunkRenderDistance_area_exited(area:Area):
     area.queue_free()
 
+func _on_ChunkRenderMid_area_exited(area:Area):
+    area.lod = area.LOD.DISTANCE
+    area.lod_update()
+
+func _on_ChunkRenderClose_area_exited(area:Area):
+    area.lod = area.LOD.MID
+    area.lod_update()
+
 func travel(direction:Vector3):
     var heading = _traveler.global_transform.basis
     heading = Basis(Vector3.UP*heading.get_euler().y)
diff --git a/World.tscn b/World.tscn
index 3bdf371..37056c5 100644
--- a/World.tscn
+++ b/World.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=9 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://World.gd" type="Script" id=1]
 [ext_resource path="res://Chunk.tscn" type="PackedScene" id=3]
@@ -6,6 +6,12 @@
 [sub_resource type="SphereShape" id=24]
 radius = 500.0
 
+[sub_resource type="SphereShape" id=25]
+radius = 300.0
+
+[sub_resource type="SphereShape" id=26]
+radius = 150.0
+
 [sub_resource type="BoxShape" id=23]
 
 [node name="World" type="Spatial"]
@@ -19,6 +25,20 @@ collision_mask = 32
 [node name="Radius" type="CollisionShape" parent="ChunkRenderDistance"]
 shape = SubResource( 24 )
 
+[node name="ChunkRenderMid" type="Area" parent="."]
+collision_layer = 0
+collision_mask = 32
+
+[node name="Radius" type="CollisionShape" parent="ChunkRenderMid"]
+shape = SubResource( 25 )
+
+[node name="ChunkRenderClose" type="Area" parent="."]
+collision_layer = 0
+collision_mask = 32
+
+[node name="Radius" type="CollisionShape" parent="ChunkRenderClose"]
+shape = SubResource( 26 )
+
 [node name="Chunks" type="RigidBody" parent="."]
 collision_layer = 0
 collision_mask = 0
@@ -36,4 +56,9 @@ shape = SubResource( 23 )
 visible = false
 collision_layer = 0
 
+[connection signal="area_entered" from="ChunkRenderDistance" to="." method="_on_ChunkRenderDistance_area_entered"]
 [connection signal="area_exited" from="ChunkRenderDistance" to="." method="_on_ChunkRenderDistance_area_exited"]
+[connection signal="area_entered" from="ChunkRenderMid" to="." method="_on_ChunkRenderMid_area_entered"]
+[connection signal="area_exited" from="ChunkRenderMid" to="." method="_on_ChunkRenderMid_area_exited"]
+[connection signal="area_entered" from="ChunkRenderClose" to="." method="_on_ChunkRenderClose_area_entered"]
+[connection signal="area_exited" from="ChunkRenderClose" to="." method="_on_ChunkRenderClose_area_exited"]