feat: Implement Stop N Go game mode with a new manager script and associated gridmap assets within the MeshLibrary.

addons/enhanced_gridmap/meshlibrary/default.tres

@@ -10,6 +10,7 @@
 [ext_resource type="ArrayMesh" uid="uid://bqvqj3fhf5x51" path="res://assets/models/tiles/tile_ghost.tres" id="6_r32il"]
 [ext_resource type="ArrayMesh" uid="uid://cv4bedhida00g" path="res://assets/models/tiles/tile_star.tres" id="7_p5epg"]
 [ext_resource type="ArrayMesh" uid="uid://gpnl4cjrivor" path="res://assets/models/tiles/tile_speed.tres" id="7_sx8rm"]
+[ext_resource type="ArrayMesh" uid="uid://onkud44h3we1" path="res://assets/models/meshes/safe_zone.res" id="8_cg50n"]
 [ext_resource type="ArrayMesh" uid="uid://dx41n2x8v30r1" path="res://assets/models/meshes/crack.res" id="10_r32il"]
 [ext_resource type="Texture2D" uid="uid://dpkx1a780pvwv" path="res://assets/textures/tile_diamond.png" id="10_sx8rm"]
 
@@ -95,7 +96,7 @@ item/1/shapes = []
 item/1/navigation_mesh_transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0)
 item/1/navigation_layers = 1
 item/2/name = "safe_zone"
-item/2/mesh = ExtResource("3_8v5xv")
+item/2/mesh = ExtResource("8_cg50n")
 item/2/mesh_transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0)
 item/2/mesh_cast_shadow = 1
 item/2/shapes = []

assets/textures/start_n_finish.jpg.import

@@ -0,0 +1,41 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cw1nmpknfgbuu"
+path.s3tc="res://.godot/imported/start_n_finish.jpg-f99b3789c83f30a48c1d54337a904fe9.s3tc.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://assets/textures/start_n_finish.jpg"
+dest_files=["res://.godot/imported/start_n_finish.jpg-f99b3789c83f30a48c1d54337a904fe9.s3tc.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=true
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0

scripts/managers/stop_n_go_manager.gd

@@ -22,7 +22,8 @@ var finish_line_x: int = 21 # Right side of the map for win condition
 
 # Tile IDs
 const TILE_WALKABLE = 0
-const TILE_START = 2 # Start Line
+const TILE_START = 3 # Start Line
+const TILE_FINISH = 3 # Finish Line
 const TILE_SAFE = 2 # Green Safe Zone
 const TILE_OBSTACLE = 4 # Wall
 
@@ -143,7 +144,7 @@ func _update_stop_timer_visuals():
 				var hbox = stop_timer_node.get_node_or_null("HBox")
 				if hbox:
 					stop_segments.clear()
-					for i in range(4):
+					for i in range(3):
 						var seg = hbox.get_node_or_null("Segment%d" % i)
 						if seg: stop_segments.append(seg)
 				
@@ -173,9 +174,9 @@ func _update_stop_timer_visuals():
 	stop_timer_node.visible = true
 
 	if current_phase == Phase.GO:
-		# GO Phase: All dim unless in last 4 seconds
+		# GO Phase: All dim unless in last 3 seconds
 		for i in range(stop_segments.size()):
-			var threshold = 4.0 - i
+			var threshold = 3.0 - i
 			if phase_timer <= threshold:
 				stop_segments[i].add_theme_stylebox_override("panel", lit_style)
 			else:
@@ -277,6 +278,8 @@ func _apply_arena_setup():
 		var tile_id = TILE_WALKABLE
 		if x == 0:
 			tile_id = TILE_START
+		elif x == gridmap.columns - 1:
+			tile_id = TILE_FINISH
 		elif x in safe_columns:
 			tile_id = TILE_SAFE
 		
@@ -352,16 +355,14 @@ func _spawn_mission_tiles():
 			if base_tile == TILE_OBSTACLE:
 				continue
 				
-			# Randomly populate other floors with goal tiles
-			# 30% chance to have a tile to avoid overcrowding
-			if randf() < 0.3:
-				var tile_type = goal_items[randi() % goal_items.size()]
-				gridmap.set_cell_item(Vector3i(x, 1, z), tile_type)
-				
-				# Sync to clients
-				var main = get_node("/root/Main")
-				if main:
-					main.rpc("sync_grid_item", x, 1, z, tile_type)
+			# Spawn tiles on all floors (100% density)
+			var tile_type = goal_items[randi() % goal_items.size()]
+			gridmap.set_cell_item(Vector3i(x, 1, z), tile_type)
+			
+			# Sync to clients
+			var main = get_node("/root/Main")
+			if main:
+				main.rpc("sync_grid_item", x, 1, z, tile_type)
 
 func _assign_missions():
 	# NO-OP: Missions are now achievement-based (Complete 3 Goals)
@@ -384,7 +385,7 @@ func check_movement_violation(player_id: int, from: Vector2i, to: Vector2i) -> b
 			# Usually implies checking if you ARE in a safe zone.
 			var tile_from = gridmap.get_cell_item(Vector3i(from.x, 0, from.y))
 			
-			if tile_from != TILE_SAFE:
+			if tile_from != TILE_SAFE and tile_from != TILE_START and tile_from != TILE_FINISH:
 				_penalize_player(player_id)
 				return true
 	return false