robustness of tileset related functionality

nodes/Context.gd

@@ -9,7 +9,7 @@ func local_position_to_context_position(_p_position: Vector2) -> Vector2:
     push_error("Abstract class method is unimplemented")
     return Vector2.ZERO
 
-func is_path_traversible(_p_from: Vector2, _p_to: Vector2) -> bool:
+func is_path_traversible(_p_game_object: Node2D, _p_from: Vector2, _p_to: Vector2) -> bool:
     push_error("Abstract class method is unimplemented")
     return false
 

nodes/GridContext.gd

@@ -1,6 +1,6 @@
 tool
 extends TK_Context
-class_name TK_GridContext
+class_name n_parent
 
 ## todo: Cell visualization.
 ## todo: Integration of TileMap.
@@ -9,20 +9,35 @@ export var cell_size: Vector2 = Vector2(64, 64) setget _set_cell_size
 
 signal cell_size_changed(p_old_cell_size, p_new_cell_size)
 
+var _colliders: Dictionary # Node to null (set)
+
 func local_position_to_context_position(p_position: Vector2) -> Vector2:
     return p_position / cell_size
 
-func is_path_traversible(p_from: Vector2, p_to: Vector2) -> bool:
-    # todo:
+func is_path_traversible(p_game_object: Node2D, p_from: Vector2, p_to: Vector2) -> bool:
+    for collider in _colliders:
+        if not collider.is_path_traversible(p_game_object, p_from, p_to):
+            return false
     return true
 
+# todo: Effectful traversal.
 func try_moving(p_game_object: Node2D, p_from: Vector2, p_to: Vector2) -> bool:
-    if not is_path_traversible(p_from, p_to):
+    if not is_path_traversible(p_game_object, p_from, p_to):
         return false
 
     p_game_object.position = cell_size * p_to
     return true
 
+func register_collider(p_collider: Node) -> void:
+    _colliders[p_collider] = null
+    if not p_collider.is_connected("child_exiting_tree", self, "_on_collider_exiting_tree") and \
+            p_collider.connect("child_exiting_tree", self, "_on_collider_exiting_tree") != OK:
+        assert(false)
+
+func _on_collider_exiting_tree(p_collider) -> void:
+    if not _colliders.erase(p_collider):
+        pass
+
 func _set_cell_size(p_new_cell_size: Vector2) -> void:
     if p_new_cell_size.x == 0 or p_new_cell_size.y == 0:
         push_error("Cell size cannot be zero")

nodes/TileMapObject.gd

@@ -1,17 +1,83 @@
 tool
 extends TileMap
 
+# todo: Give care about descriptor swaps being loseless / non introducing artifacts.
+# todo: Prevent user from deleting or editing tile_set property.
+
+# todo: Update it when changed.
 ## Dictates whether tileset collision information should be exposed to game context.
 export var expose_collisions: bool = true
 
+# todo: Use Node identity instead of name.
+var _descriptor_name_to_id: Dictionary # String to int
+var _id_to_descriptor_name: Dictionary # int to String
+
+func change_tile_texture(p_tile: String, p_texture: Texture) -> void:
+    if not p_tile in _descriptor_name_to_id:
+        push_error("Invalid tile name")
+        return
+    
+    var id := _descriptor_name_to_id[p_tile] as int
+    tile_set.tile_set_texture(id, p_texture)
+
+func is_path_traversible(p_game_object: Node2D, p_from: Vector2, p_to: Vector2) -> bool:
+    if p_from.distance_squared_to(p_to) == 1:
+        var id := get_cell(int(p_to.x), int(p_to.y))
+        if id == -1: return true
+        var descriptor = _id_to_descriptor_name[id] as String
+        return get_node(descriptor).is_traversible_for(p_game_object)
+    else:
+        print_debug("Unimplemented")
+        return false
+
 func _enter_tree() -> void:
+    tile_set = TileSet.new()
+
+    var n_parent := get_parent()
+    if not n_parent is TK_Context:
+        return
+
+    n_parent.register_collider(self)
+
     # It's okay to fail here for non-grid contexts.
-    if get_parent().connect("cell_size_changed", self, "_update_cell_size"):
-        _update_cell_size(get_parent().cell_size, get_parent().cell_size)
+    if not n_parent.is_connected("cell_size_changed", self, "_update_cell_size") and \
+            n_parent.connect("cell_size_changed", self, "_update_cell_size") != OK:
+        assert(false)
+
+    _update_cell_size(n_parent.cell_size, n_parent.cell_size)
+
+    if not is_connected("child_entered_tree", self, "_on_child_entered_tree") and \
+            connect("child_entered_tree", self, "_on_child_entered_tree") != OK:
+        assert(false)
+
+    if not is_connected("child_exiting_tree", self, "_on_child_exiting_tree") and \
+            connect("child_exiting_tree", self, "_on_child_exiting_tree") != OK:
+        assert(false)
 
 func _update_cell_size(_p_old_cell_size: Vector2, p_new_cell_size: Vector2) -> void:
     # We're assuming that all tile textures are of same dimensions.
     # todo: Diagnose mismatch by walking over all textures?
+    if tile_set.get_tiles_ids().size() == 0:
+        return
     var tileset_texture_size := tile_set.tile_get_texture(0).get_size()
     scale = p_new_cell_size / tileset_texture_size
     cell_size = p_new_cell_size / scale
+
+func _on_child_entered_tree(p_node: Node) -> void:
+    var id := tile_set.get_last_unused_tile_id()
+    _descriptor_name_to_id[p_node.name] = id
+    _id_to_descriptor_name[id] = p_node.name
+    tile_set.create_tile(id)
+    tile_set.tile_set_texture(id, p_node.texture)
+    if not p_node.id.empty():
+        tile_set.tile_set_name(id, p_node.id)
+
+func _on_child_exiting_tree(p_node: Node) -> void:
+    var id := _descriptor_name_to_id[p_node.name] as int
+    for cell in get_used_cells_by_id(id):
+        set_cellv(cell, -1)
+    tile_set.remove_tile(id)
+    if not _descriptor_name_to_id.erase(p_node.name):
+        assert(false)
+    if not _id_to_descriptor_name.erase(id):
+        assert(false)

nodes/TileMapTileDescriptor.gd

@@ -0,0 +1,20 @@
+tool
+extends Node
+class_name TK_TileMapTileDescriptor
+
+export var texture: Texture setget _set_texture
+
+# todo: More layer customizeability.
+export var is_solid: bool
+
+# todo: Update TileMapObject in editor when it's changed.
+export var id: String = ""
+
+# todo: Should work for non-grid objects.
+func is_traversible_for(_p_game_object: Node2D) -> bool:
+    return not is_solid
+
+func _set_texture(p_texture: Texture) -> void:
+    texture = p_texture
+    if is_inside_tree():
+        get_parent().change_tile_texture(name, p_texture)

project.godot

@@ -134,8 +134,13 @@ _global_script_classes=[ {
 "language": "GDScript",
 "path": "res://nodes/GameObject.gd"
 }, {
+"base": "Node",
+"class": "TK_TileMapTileDescriptor",
+"language": "GDScript",
+"path": "res://nodes/TileMapTileDescriptor.gd"
+}, {
 "base": "TK_Context",
-"class": "TK_GridContext",
+"class": "n_parent",
 "language": "GDScript",
 "path": "res://nodes/GridContext.gd"
 } ]
@@ -165,13 +170,15 @@ _global_script_class_icons={
 "TK_Controller": "",
 "TK_FittingSprite": "",
 "TK_GameObject": "",
-"TK_GridContext": ""
+"TK_TileMapTileDescriptor": "",
+"n_parent": ""
 }
 
 [application]
 
 config/name="TochieKit"
 run/main_scene="res://scenes/Game.tscn"
+run/low_processor_mode=true
 config/icon="res://icon.png"
 
 [autoload]
@@ -220,6 +227,15 @@ move_left={
  ]
 }
 
+[input_devices]
+
+buffering/agile_event_flushing=true
+pointing/emulate_touch_from_mouse=true
+
+[node]
+
+name_num_separator=3
+
 [physics]
 
 common/enable_pause_aware_picking=true
@@ -227,8 +243,18 @@ common/enable_pause_aware_picking=true
 [rendering]
 
 quality/driver/driver_name="GLES2"
+quality/intended_usage/framebuffer_allocation=1
+quality/intended_usage/framebuffer_allocation.mobile=1
 2d/snapping/use_gpu_pixel_snap=true
+threads/thread_model=2
 vram_compression/import_etc=true
 vram_compression/import_etc2=false
+quality/reflections/texture_array_reflections=false
+quality/shading/force_vertex_shading=true
+quality/shading/force_lambert_over_burley=true
+quality/shading/force_blinn_over_ggx=true
+quality/filters/use_nearest_mipmap_filter=true
+batching/options/single_rect_fallback=true
+quality/lightmapping/use_bicubic_sampling=false
 environment/default_clear_color=Color( 0.00784314, 0, 0.117647, 1 )
 environment/default_environment="res://default_env.tres"

scenes/Game.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=12 format=2]
+[gd_scene load_steps=10 format=2]
 
 [ext_resource path="res://nodes/FittingSprite.gd" type="Script" id=1]
 [ext_resource path="res://art/entities/fiend.png" type="Texture" id=2]
@@ -6,64 +6,41 @@
 [ext_resource path="res://nodes/GridContext.tscn" type="PackedScene" id=4]
 [ext_resource path="res://nodes/GameObject.tscn" type="PackedScene" id=5]
 [ext_resource path="res://art/tiles/brickwall.png" type="Texture" id=6]
-[ext_resource path="res://nodes/TileMapObject.gd" type="Script" id=7]
-
-[sub_resource type="OccluderPolygon2D" id=2]
-polygon = PoolVector2Array( 16, 16, 0, 16, 0, 0, 16, 0 )
-
-[sub_resource type="ConvexPolygonShape2D" id=3]
-points = PoolVector2Array( 16, 16, 0, 16, 0, 16, 16, 16 )
-
-[sub_resource type="ConvexPolygonShape2D" id=4]
-points = PoolVector2Array( 16, 16, 0, 16, 0, 0, 16, 0 )
+[ext_resource path="res://nodes/TileMapObject.tscn" type="PackedScene" id=7]
+[ext_resource path="res://scenes/tiles/Brickwall.tscn" type="PackedScene" id=8]
 
 [sub_resource type="TileSet" id=1]
-0/name = "brickwall.png 0"
+0/name = "tk.Brickwall"
 0/texture = ExtResource( 6 )
 0/tex_offset = Vector2( 0, 0 )
 0/modulate = Color( 1, 1, 1, 1 )
-0/region = Rect2( 0, 0, 16, 16 )
+0/region = Rect2( 0, 0, 0, 0 )
 0/tile_mode = 0
 0/occluder_offset = Vector2( 0, 0 )
-0/occluder = SubResource( 2 )
 0/navigation_offset = Vector2( 0, 0 )
 0/shape_offset = Vector2( 0, 0 )
 0/shape_transform = Transform2D( 1, 0, 0, 1, 0, 0 )
-0/shape = SubResource( 3 )
 0/shape_one_way = false
-0/shape_one_way_margin = 1.0
-0/shapes = [ {
-"autotile_coord": Vector2( 0, 0 ),
-"one_way": false,
-"one_way_margin": 1.0,
-"shape": SubResource( 3 ),
-"shape_transform": Transform2D( 1, 0, 0, 1, 0, 0 )
-}, {
-"autotile_coord": Vector2( 0, 0 ),
-"one_way": false,
-"one_way_margin": 1.0,
-"shape": SubResource( 4 ),
-"shape_transform": Transform2D( 1, 0, 0, 1, 0, 0 )
-} ]
+0/shape_one_way_margin = 0.0
+0/shapes = [  ]
 0/z_index = 0
 
 [node name="Gauntlet" type="Node"]
 
 [node name="GridContext" parent="." instance=ExtResource( 4 )]
 
-[node name="TileMap" type="TileMap" parent="GridContext"]
+[node name="TileMapObject" parent="GridContext" instance=ExtResource( 7 )]
 scale = Vector2( 4, 4 )
 tile_set = SubResource( 1 )
 cell_size = Vector2( 16, 16 )
-bake_navigation = true
-format = 1
-tile_data = PoolIntArray( 0, 0, 0, 1, 0, 0, 2, 0, 0, 3, 0, 0, 4, 0, 0, 5, 0, 0, 6, 0, 0, 7, 0, 0, 8, 0, 0, 9, 0, 0, 10, 0, 0, 11, 0, 0, 12, 0, 0, 13, 0, 0, 14, 0, 0, 15, 0, 0, 65536, 0, 0, 65542, 0, 0, 65551, 0, 0, 131072, 0, 0, 131082, 0, 0, 131087, 0, 0, 196608, 0, 0, 196618, 0, 0, 196623, 0, 0, 262144, 0, 0, 262145, 0, 0, 262146, 0, 0, 262147, 0, 0, 262148, 0, 0, 262149, 0, 0, 262150, 0, 0, 262151, 0, 0, 262152, 0, 0, 262153, 0, 0, 262154, 0, 0, 262156, 0, 0, 262157, 0, 0, 262158, 0, 0, 262159, 0, 0, 327680, 0, 0, 327683, 0, 0, 327695, 0, 0, 393216, 0, 0, 393226, 0, 0, 393227, 0, 0, 393229, 0, 0, 393231, 0, 0, 458752, 0, 0, 458761, 0, 0, 458762, 0, 0, 458767, 0, 0, 524288, 0, 0, 524289, 0, 0, 524290, 0, 0, 524291, 0, 0, 524292, 0, 0, 524293, 0, 0, 524294, 0, 0, 524295, 0, 0, 524296, 0, 0, 524297, 0, 0, 524298, 0, 0, 524299, 0, 0, 524300, 0, 0, 524301, 0, 0, 524302, 0, 0, 524303, 0, 0 )
-script = ExtResource( 7 )
+tile_data = PoolIntArray( 0, 0, 0, 1, 0, 0, 2, 0, 0, 3, 0, 0, 4, 0, 0, 5, 0, 0, 6, 0, 0, 7, 0, 0, 8, 0, 0, 9, 0, 0, 10, 0, 0, 11, 0, 0, 12, 0, 0, 13, 0, 0, 14, 0, 0, 15, 0, 0, 65536, 0, 0, 65551, 0, 0, 131072, 0, 0, 131087, 0, 0, 196608, 0, 0, 196623, 0, 0, 262144, 0, 0, 262159, 0, 0, 327680, 0, 0, 327695, 0, 0, 393216, 0, 0, 393231, 0, 0, 458752, 0, 0, 458767, 0, 0, 524288, 0, 0, 524289, 0, 0, 524290, 0, 0, 524291, 0, 0, 524292, 0, 0, 524293, 0, 0, 524294, 0, 0, 524295, 0, 0, 524296, 0, 0, 524297, 0, 0, 524298, 0, 0, 524299, 0, 0, 524300, 0, 0, 524301, 0, 0, 524302, 0, 0, 524303, 0, 0 )
 
-[node name="GameObject" parent="GridContext" instance=ExtResource( 5 )]
+[node name="Brickwall" parent="GridContext/TileMapObject" instance=ExtResource( 8 )]
+
+[node name="Player" parent="GridContext" instance=ExtResource( 5 )]
 position = Vector2( 384, 128 )
 
-[node name="Visual" type="Sprite" parent="GridContext/GameObject"]
+[node name="Visual" type="Sprite" parent="GridContext/Player"]
 scale = Vector2( 4, 4 )
 texture = ExtResource( 2 )
 centered = false
@@ -73,9 +50,9 @@ __meta__ = {
 }
 target_size = Vector2( 64, 64 )
 
-[node name="4WayController" parent="GridContext/GameObject" instance=ExtResource( 3 )]
+[node name="4WayController" parent="GridContext/Player" instance=ExtResource( 3 )]
 
-[node name="Camera2D" type="Camera2D" parent="GridContext/GameObject"]
+[node name="Camera2D" type="Camera2D" parent="GridContext/Player"]
 position = Vector2( 32, 32 )
 __meta__ = {
 "_edit_lock_": true

scenes/tiles/Brickwall.tscn

@@ -0,0 +1,10 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://art/tiles/brickwall.png" type="Texture" id=1]
+[ext_resource path="res://nodes/TileMapTileDescriptor.gd" type="Script" id=2]
+
+[node name="Brickwall" type="Node"]
+script = ExtResource( 2 )
+texture = ExtResource( 1 )
+is_solid = true
+id = "tk.Brickwall"