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highlight on hover and click to remove groups

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grid is updated after a click
This commit is contained in:
Jack Case
2025-08-23 17:21:16 -04:00
parent 05677ec35a
commit 0a860c7a5d
5 changed files with 85 additions and 61 deletions
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76
grid.gd
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@@ -7,6 +7,13 @@ class_name Grid
@export var offset: float = 55.0
@onready
var grid_area: Area2D = $BoundaryArea
@onready
var grid_shape: CollisionShape2D = $BoundaryArea/BoundaryShape
var grid: Array[Array]
var groups: Array
var hovered_group: Array
@@ -18,6 +25,9 @@ var token = preload("res://token.tscn")
func _ready():
debug_label = $"Debug Label"
grid_area.position = Vector2(cols * offset / 2, rows * offset / 2)
grid_shape.shape.size = Vector2(cols * offset, rows * offset)
for row in rows:
grid.append([])
for column in cols:
@@ -25,35 +35,38 @@ func _ready():
add_child(token_node)
token_node.set_type(randi_range(0,3) as Token.token_type)
token_node.set_debug_label(str(row) + "," + str(column))
token_node.token_clicked.connect(_on_token_clicked.bind([row,column]))
#token_node.token_hovered.connect(_on_token_hovered.bind([row,column]))
grid[row].append(token_node)
redraw_grid()
calculate_token_groups()
func _on_token_clicked(token_coord):
var group = get_group_of_token(token_coord)
if group.size() >= min_group_size:
for coord in group:
var current_token = grid[coord[0]][coord[1]] as Token
current_token.queue_free()
grid[coord[0]][coord[1]] = null # do I actually want a null value or should there be some other placeholder?
func _process(_delta: float) -> void:
clear_highlights()
update_grid()
# get mouse position for hover
var mouse_position = self.get_local_mouse_position()
if not pixel_within_grid(mouse_position):
return
var coord_under_mouse = pixel_to_grid_coord(mouse_position)
var token_under_mouse: Token = grid[coord_under_mouse[0]][coord_under_mouse[1]]
if token_under_mouse != null:
var group = get_group_of_token(coord_under_mouse)
if group.size() >= min_group_size:
highlight_group(group, true)
# if click, determine token clicked
func pixel_within_grid(coord: Vector2) -> bool:
return (coord.x >= 0 and coord.x < cols * offset and
coord.y >= 0 and coord.y < rows * offset)
func pixel_to_grid_coord(coord: Vector2) -> Array[int]:
return [coord.y / offset, coord.x / offset]
func _on_token_hovered(enter: bool, coord: Array):
var group = get_group_of_token(coord)
if enter:
highlight_group(group, true)
else:
highlight_group(group, false)
func highlight_group(group: Array, enable: bool):
if group != hovered_group:
# Un-highlight current, update current
for coord in hovered_group:
var current_token = grid[coord[0]][coord[1]]
current_token.set_highlighted(false)
for coord in group:
var current_token = grid[coord[0]][coord[1]] as Token
@@ -62,6 +75,12 @@ func highlight_group(group: Array, enable: bool):
hovered_group = group
func clear_highlights():
for row in grid:
for token: Token in row:
if token != null:
token.set_highlighted(false)
func update_grid():
# search for empty cells and drop tokens above them down
for column in range(cols):
@@ -82,6 +101,7 @@ func update_grid():
# search for empty coluns and shift tokens horizontally to fill them
redraw_grid()
calculate_token_groups()
func redraw_grid():
for row in range(rows):
@@ -92,7 +112,7 @@ func redraw_grid():
current_token.position = Vector2(offset*column, offset*row)
calculate_token_groups()
func calculate_token_groups():
groups = []
@@ -146,3 +166,17 @@ func get_group_of_token(token_coord) -> Array:
return group
return []
func _on_boundary_area_input_event(viewport: Node, event: InputEvent, shape_idx: int) -> void:
if event.is_action_pressed("select"):
var position = self.get_local_mouse_position()
var token_coord = pixel_to_grid_coord(position)
var group = get_group_of_token(token_coord)
if group.size() >= min_group_size:
for coord in group:
var current_token = grid[coord[0]][coord[1]] as Token
current_token.queue_free()
grid[coord[0]][coord[1]] = null # do I actually want a null value or should there be some other placeholder?
update_grid()