Basic tilemap access setup

doc/sprites.md

@@ -1 +1,16 @@
 # Game Sprites
+
+## Setup and Export
+
+Tilemap is created using aseprite.
+Each layer of the tilemap is exported as a separate image using
+https://github.com/dacap/export-aseprite-file, with some custom changes.
+Script can be executed from the command line using the batch file
+[export.bat](../project/assets/tilemap/export.bat).
+Make sure to have aseprite in the PATH.
+
+On export, the tileset is automatically updated in godot, making it easy to work with.
+
+## Sprite/Tilemap list
+
+TODO (dome)

project/assets/tilemap/tilemaps/sprite.json

@@ -1,30 +1,30 @@
 {
-	"width": 320,
-	"frames": [
-		{
-			"duration": 0.1
-		}
-	],
+	"height": 320,
 	"layers": [
 		{
-			"name": "ground",
 			"cels": [
 				{
 					"frame": 0,
 					"image": "tilemaps\\tilemap_ground.png"
 				}
-			]
+			],
+			"name": "ground"
 		},
 		{
-			"name": "objects",
 			"cels": [
 				{
 					"frame": 0,
 					"image": "tilemaps\\tilemap_objects.png"
 				}
-			]
+			],
+			"name": "objects"
 		}
 	],
-	"height": 320,
-	"filename": "tilemaps.aseprite"
+	"filename": "tilemaps.aseprite",
+	"frames": [
+		{
+			"duration": 0.1
+		}
+	],
+	"width": 320
 }

project/assets/tilemap/tileset.tres

@@ -6,14 +6,19 @@
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_114re"]
 texture = ExtResource("1_ukrsa")
 0:0/0 = 0
+0:0/0/custom_data_0 = true
 1:0/0 = 0
 2:0/0 = 0
 3:0/0 = 0
+3:0/0/custom_data_0 = true
 
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_7jeam"]
 texture = ExtResource("2_o4fdg")
 0:0/0 = 0
+1:0/0 = 0
 
 [resource]
+custom_data_layer_0/name = "walkable"
+custom_data_layer_0/type = 1
 sources/0 = SubResource("TileSetAtlasSource_114re")
 sources/1 = SubResource("TileSetAtlasSource_7jeam")

project/scripts/tilemap/TileMapLayerAccess.gd

@@ -0,0 +1,59 @@
+class_name TileMapLayerAccess
+extends Node
+
+var tilemap: TileMapLayer = null
+var sid: int              = 0
+
+
+func setup() -> void:
+    pass
+
+
+func get_cells_by_type(atlas_coords: Vector2i) -> Array[Vector2i]:
+    return tilemap.get_used_cells_by_id(sid, atlas_coords)
+
+
+func get_cells_by_custom_data(field_name: String, custom_data: Variant) -> Array[Vector2i]:
+    var tiles_with_custom_data: Array = []
+    for coords in tilemap.get_used_cells():
+        var tile_data: TileData = tilemap.get_cell_tile_data(coords)
+        if tile_data.get_custom_data(field_name) == custom_data:
+            tiles_with_custom_data.append(coords)
+    return tiles_with_custom_data
+
+
+func get_custom_data(coords: Vector2i, field_name: String) -> Variant:
+    var tile_data: TileData = tilemap.get_cell_tile_data(coords)
+    return tile_data.get_custom_data(field_name)
+
+
+func get_cells(positions: Array[Vector2i]) -> Array[TileData]:
+    var tiles: Array = []
+    for coords in positions:
+        tiles.append(tilemap.get_cell_tile_data(coords))
+    return tiles
+
+
+func get_cell(position: Vector2i) -> TileData:
+    return tilemap.get_cell_tile_data(position)
+
+
+func set_cell(position: Vector2i, atlas_coords: Vector2i) -> void:
+    tilemap.set_cell(position, sid, atlas_coords)
+
+
+func clear_cell(position: Vector2i) -> void:
+    tilemap.set_cell(position, -1)
+
+
+func clear_cells() -> void:
+    for coords in tilemap.get_used_cells():
+        tilemap.set_cell(coords, -1)
+
+
+func local_to_cell(global_position: Vector2) -> Vector2i:
+    return tilemap.local_to_map(global_position)
+
+
+func cell_to_local(cell_position: Vector2i) -> Vector2:
+    return tilemap.map_to_local(cell_position)

project/scripts/tilemap/TileMapTileTypes.gd

@@ -0,0 +1,7 @@
+class_name TileMapTileTypes
+
+# ground layer
+const GRASS: Vector2i         = Vector2i(0, 0)
+const WATER_SHALLOW: Vector2i = Vector2i(1, 0)
+const WATER_DEEP: Vector2i    = Vector2i(2, 0)
+const SAND: Vector2i          = Vector2i(3, 0)

project/scripts/tilemap/World.gd

@@ -1,12 +1,33 @@
 class_name World
 extends Node2D
 
+var tilemap_ground: TileMapLayerAccess          = TileMapLayerAccess.new()
+var tilemap_non_interactive: TileMapLayerAccess = TileMapLayerAccess.new()
+var tilemap_interactive: TileMapLayerAccess     = TileMapLayerAccess.new()
+var tilemap_player: TileMapLayerAccess          = TileMapLayerAccess.new()
+var tilemap_temperature: TileMapLayerAccess     = TileMapLayerAccess.new()
+#
+var tilemap_types: TileMapTileTypes = TileMapTileTypes.new()
+
 
-# Called when the node enters the scene tree for the first time.
 func _ready() -> void:
-	pass # Replace with function body.
+    tilemap_ground.tilemap = $GroundLayer
+    tilemap_non_interactive.tilemap = $NonInteractiveObjectsLayer
+    tilemap_interactive.tilemap = $InteractiveObjectsLayer
+    tilemap_player.tilemap = $PlayerLayer
+    tilemap_temperature.tilemap = $TemperatureLayer
+
+    tilemap_ground.setup()
+    tilemap_non_interactive.setup()
+    tilemap_interactive.setup()
+    tilemap_player.setup()
+    tilemap_temperature.setup()
+
+
+# print(tilemap_non_interactive.get_cells_by_custom_data("walkable", true))
+# tilemap_ground.clear_cells()
+# tilemap_ground.set_cell(Vector2i(0, 0), tilemap_types.GRASS)
 
 
-# Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
-	pass
+    print(tilemap_ground.local_to_cell(get_local_mouse_position()))