extends Node2D func _ready() -> void: Global.project_switched.connect(queue_redraw) func _draw() -> void: if not Global.draw_grid: return var target_rect: Rect2i if Global.grid_draw_over_tile_mode: target_rect = Global.current_project.tiles.get_bounding_rect() else: target_rect = Rect2i(Vector2i.ZERO, Global.current_project.size) if not target_rect.has_area(): return var grid_type := Global.grid_type if grid_type == Global.GridTypes.CARTESIAN || grid_type == Global.GridTypes.ALL: _draw_cartesian_grid(target_rect) if grid_type == Global.GridTypes.ISOMETRIC || grid_type == Global.GridTypes.ALL: _draw_isometric_grid(target_rect) func _draw_cartesian_grid(target_rect: Rect2i) -> void: var grid_multiline_points := PackedVector2Array() var x: float = ( target_rect.position.x + fposmod(Global.grid_offset.x - target_rect.position.x, Global.grid_size.x) ) while x <= target_rect.end.x: grid_multiline_points.push_back(Vector2(x, target_rect.position.y)) grid_multiline_points.push_back(Vector2(x, target_rect.end.y)) x += Global.grid_size.x var y: float = ( target_rect.position.y + fposmod(Global.grid_offset.y - target_rect.position.y, Global.grid_size.y) ) while y <= target_rect.end.y: grid_multiline_points.push_back(Vector2(target_rect.position.x, y)) grid_multiline_points.push_back(Vector2(target_rect.end.x, y)) y += Global.grid_size.y if not grid_multiline_points.is_empty(): draw_multiline(grid_multiline_points, Global.grid_color) func _draw_isometric_grid(target_rect: Rect2i) -> void: var grid_multiline_points := PackedVector2Array() var cell_size := Global.isometric_grid_size var max_cell_count := target_rect.size / cell_size var origin_offset := Vector2(Global.grid_offset - target_rect.position).posmodv(cell_size) # lines ↗↗↗ (from bottom-left to top-right) var per_cell_offset := cell_size * Vector2i(1, -1) # lines ↗↗↗ starting from the rect's left side (top to bottom): var y: float = fposmod( origin_offset.y + cell_size.y * (0.5 + origin_offset.x / cell_size.x), cell_size.y ) while y < target_rect.size.y: var start: Vector2 = target_rect.position + Vector2i(0, y) var cells_to_rect_bounds := minf(max_cell_count.x, y / cell_size.y) var end := start + cells_to_rect_bounds * per_cell_offset grid_multiline_points.push_back(start) grid_multiline_points.push_back(end) y += cell_size.y # lines ↗↗↗ starting from the rect's bottom side (left to right): var x: float = (y - target_rect.size.y) / cell_size.y * cell_size.x while x < target_rect.size.x: var start: Vector2 = target_rect.position + Vector2i(x, target_rect.size.y) var cells_to_rect_bounds := minf(max_cell_count.y, max_cell_count.x - x / cell_size.x) var end: Vector2 = start + cells_to_rect_bounds * per_cell_offset grid_multiline_points.push_back(start) grid_multiline_points.push_back(end) x += cell_size.x # lines ↘↘↘ (from top-left to bottom-right) per_cell_offset = cell_size # lines ↘↘↘ starting from the rect's left side (top to bottom): y = fposmod(origin_offset.y - cell_size.y * (0.5 + origin_offset.x / cell_size.x), cell_size.y) while y < target_rect.size.y: var start: Vector2 = target_rect.position + Vector2i(0, y) var cells_to_rect_bounds := minf(max_cell_count.x, max_cell_count.y - y / cell_size.y) var end: Vector2 = start + cells_to_rect_bounds * per_cell_offset grid_multiline_points.push_back(start) grid_multiline_points.push_back(end) y += cell_size.y # lines ↘↘↘ starting from the rect's top side (left to right): x = fposmod(origin_offset.x - cell_size.x * (0.5 + origin_offset.y / cell_size.y), cell_size.x) while x < target_rect.size.x: var start: Vector2 = target_rect.position + Vector2i(x, 0) var cells_to_rect_bounds := minf(max_cell_count.y, max_cell_count.x - x / cell_size.x) var end: Vector2 = start + cells_to_rect_bounds * per_cell_offset grid_multiline_points.push_back(start) grid_multiline_points.push_back(end) x += cell_size.x if not grid_multiline_points.is_empty(): draw_multiline(grid_multiline_points, Global.grid_color)