use config with 1 step size

.gitignore

+__pycache__

app/blueprints/home.py

@@ -20,7 +20,7 @@ with open("piece_variables.json", encoding="utf-8") as infile:
     PIECE_VARIABLES = json.load(infile)
 
 
-CONFIG = {"width": 4.0, "height": 4.0, "move_step": 0.5, "prevent_overlap": False}
+CONFIG = {"width": 4.0, "height": 4.0, "move_step": 1, "prevent_overlap": False}
 OBJS = {
     "bridge": {
         "id_n": 0,
@@ -67,6 +67,18 @@ COLORS = {
 }
 
 
+def name_generator():
+    """
+    make sure objects are placed with increasing id
+    """
+    n = 0
+    while True:
+        yield n
+        n += 1
+
+NAME_GEN = name_generator()
+
+
 @socketio.on('click')
 def sample_preview_board(config):
     golmi_server = f'http://{current_app.config["golmi_host"]}:{current_app.config["golmi_port"]}'
@@ -90,7 +102,7 @@ def sample_preview_board(config):
         obj["x"] = x #- len(obj["block_matrix"][0]) // 2
         obj["y"] = y #- len(obj["block_matrix"]) // 2
         
-        id_n = str(len(state["objs"]))
+        id_n = str(next(NAME_GEN))
         obj["id_n"] = id_n
         state["objs"][id_n] = obj