463 lines
15 KiB
GDScript
463 lines
15 KiB
GDScript
extends Node3D
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class_name HexGrid
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@onready var placement_visualizer = $PlacementVisualizer
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const DIR_N: Vector3 = Vector3(0, 1, -1)
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const DIR_NE: Vector3 = Vector3(1, 0, -1)
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const DIR_SE: Vector3 = Vector3(1, -1, 0)
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const DIR_S: Vector3 = Vector3(0, -1, 1)
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const DIR_SW: Vector3 = Vector3(-1, 0, 1)
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const DIR_NW: Vector3 = Vector3(-1, 1, 0)
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const DIR_ALL: Array[Vector3] = [DIR_N, DIR_NE, DIR_SE, DIR_S, DIR_SW, DIR_NW]
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#const size = Vector2(1, sqrt(3.0)/2.0)
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# We can hover all of our tiles (will show on-hover shader)
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# If we click on a placed tile, we do the following
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# Check if we would split the hive -> deny selection
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# Get possible movement tiles (via MovementBehaviour)
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# If 0 -> Deny
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# Filter remaining movement spots to not include hive-splitting moves(?)
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const size: float = 0.5
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var used_cells: Dictionary = {}
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@export var layer_height: float = 0.4
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# have all used_cells be saved as Vector4i (q, r, s, y)
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class AxialCoordinates:
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var q: float
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var r: float
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func _init(_q: float, _r: float):
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q = _q
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r = _r
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func flat_hex_corner(center: Vector2, size: float, corner_num: int) -> Vector2:
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var angle_deg: int = 60 * corner_num
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var angle_rad: float = deg_to_rad(angle_deg)
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return Vector2(center.x + size * cos(angle_rad), center.y + size * sin(angle_rad))
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func flat_hex_to_world_position(coords: AxialCoordinates) -> Vector2:
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var x = size * (3.0/2.0 * coords.q)
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var y = size * (sqrt(3.0)/2.0 * coords.q + sqrt(3.0) * coords.r)
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return Vector2(x, y)
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func cube_to_world_pos(coords: Vector4i) -> Vector2:
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return flat_hex_to_world_position(cube_to_axial(coords))
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#func world_to_hex_tile(world_pos: Vector3) -> Vector2:
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# var q = (2.0/3.0 * world_pos.x)
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# var r = (-1.0/3.0 * world_pos.x + sqrt(3.0)/3.0 * world_pos.z)
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#
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# return cube_round()
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#
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# return
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const INSECT_TILE = preload("res://InsectTiles/InsectTile.tscn")
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func world_to_hex_tile(coords: Vector2) -> AxialCoordinates:
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var q = (2.0/3.0 * coords.x) / size
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var r = (-1.0/3.0 * coords.x + sqrt(3.0)/3.0 * coords.y) / size
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return axial_round(AxialCoordinates.new(q, r))
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func cube_to_axial(coords: Vector4i) -> AxialCoordinates:
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var q = coords.x
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var r = coords.y
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return AxialCoordinates.new(q, r)
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func axial_round(coords: AxialCoordinates) -> AxialCoordinates:
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return cube_to_axial(cube_round(axial_to_cube(coords)))
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func axial_to_cube(coords: AxialCoordinates) -> Vector4i:
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var q = coords.q
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var r = coords.r
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var s = -q-r
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return Vector4i(q, r, s, 0)
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func cube_round(coords: Vector4i) -> Vector4i:
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var q: float = round(coords.x)
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var r: float = round(coords.y)
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var s: float = round(coords.z)
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var q_diff: float = abs(q - coords.x)
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var r_diff: float = abs(r - coords.y)
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var s_diff: float = abs(s - coords.z)
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if q_diff > r_diff and q_diff > s_diff:
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q = -r-s
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elif r_diff > s_diff:
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r = -q-s
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else:
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s = -q-r
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return Vector4i(q, r, s, 0)
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@export var dragging_intersect_plane_normal: Vector3 = Vector3.UP
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@export var dragging_intersect_plane_distance: float = 0.0
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func get_3d_pos(position2D: Vector2):
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return Plane(dragging_intersect_plane_normal, dragging_intersect_plane_distance).intersects_ray(get_viewport().get_camera_3d().project_ray_origin(position2D), get_viewport().get_camera_3d().project_ray_normal(position2D))
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var placements: Dictionary = {}
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func is_cell_empty(coords: Vector4i) -> bool:
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return !used_cells.has(coords)
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func is_cell_not_empty(coords: Vector4i) -> bool:
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return !is_cell_empty(coords)
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func get_empty_neighbours(coords: Vector4i) -> Array[Vector4i]:
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return get_neighbours(coords).filter(is_cell_empty)
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func get_neighbours(coords: Vector4i, ground_layer: bool = false) -> Array[Vector4i]:
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var layer: int = coords.w
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if ground_layer:
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layer = 0
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return [
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Vector4i(coords.x + 1, coords.y, coords.z - 1, layer),
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Vector4i(coords.x + 1, coords.y - 1, coords.z, layer),
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Vector4i(coords.x, coords.y - 1, coords.z + 1, layer),
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Vector4i(coords.x - 1, coords.y, coords.z + 1, layer),
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Vector4i(coords.x - 1, coords.y + 1, coords.z, layer),
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Vector4i(coords.x, coords.y + 1, coords.z - 1, layer)
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]
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var current_tile: Node3D
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const HEX_OUTLINE = preload("res://hex_outline.tscn")
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func get_placeable_positions(button: InsectButton) -> Array[Vector4i]:
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if used_cells.size() == 0:
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return [Vector4i.ZERO]
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elif used_cells.size() == 1:
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var single_cell = used_cells.keys().front()
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var neighbours = get_neighbours(single_cell)
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var positions: Array[Vector4i] = []
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for neighbour in neighbours:
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#var hex_pos = cube_to_world_pos(neighbour)
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positions.push_back(neighbour)
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return positions
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var possible_placements: Dictionary = {}
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var positions: Array[Vector4i] = []
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for hex in used_cells.keys():
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for neighbour in get_empty_neighbours(hex):
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if not used_cells.has(neighbour):
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possible_placements[neighbour] = true
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for p in possible_placements:
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var eligible: bool = true
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for neighbour in get_neighbours(p):
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if not used_cells.has(neighbour):
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continue
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if used_cells[neighbour].is_black != button.is_black:
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eligible = false
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break
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if eligible:
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positions.push_back(p)
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return positions
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func get_left_neighbour(pos: Vector4i) -> Vector4i:
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return Vector4i(-pos.z, -pos.x, -pos.y, 0)
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func get_right_neighbour(pos: Vector4i) -> Vector4i:
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return Vector4i(-pos.y, -pos.z, -pos.x, 0)
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var debug_labels = []
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func debug_label(pos, text) -> void:
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var label = Label3D.new()
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label.billboard = BaseMaterial3D.BILLBOARD_ENABLED
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label.text = text
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var p = cube_to_world_pos(pos)
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label.position = Vector3(p.x, 0.2, p.y)
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add_child(label)
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debug_labels.push_back(label)
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func clear_debug_labels() -> void:
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for label in debug_labels:
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label.queue_free()
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debug_labels.clear()
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func can_reach(start: Vector4i, target: Vector4i, exclude: Array[Vector4i] = []) -> bool:
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if start.w != target.w:
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return true
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# if we have 5 potential spaces it can never be blocked
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var offset: Vector4i = Vector4i.ZERO
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offset.x = target.x - start.x
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offset.y = target.y - start.y
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offset.z = target.z - start.z
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var left = get_left_neighbour(offset)
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var right = get_right_neighbour(offset)
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var left_coord = Vector4i(left.x + start.x, left.y + start.y, left.z + start.z, start.w)
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var right_coord = Vector4i(right.x + start.x, right.y + start.y, right.z + start.z, start.w)
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if left_coord in exclude or right_coord in exclude:
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print("excluded?")
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return true
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return is_cell_empty(left_coord) or is_cell_empty(right_coord)
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func _on_insect_selected(button: InsectButton, is_black: bool) -> void:
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var positions = get_placeable_positions(button)
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for p in positions:
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var outline = HEX_OUTLINE.instantiate()
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var hex_pos = cube_to_world_pos(p)
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outline.position = Vector3(hex_pos.x, 0.0, hex_pos.y)
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outline.visible = true
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outline.insect_resource = button.insect_resource
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outline.is_black = is_black
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outline.coordinates = p
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outline.map_reference = self
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placement_visualizer.add_child(outline)
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#placements[p] = outline
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# create a hexagon with insect resource data
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#var tile = INSECT_TILE.instantiate()
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#tile.resource = insect_resource
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#tile.is_black = is_black
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#current_tile = tile
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#add_child(tile)
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#var insect_resource: TileResource = button.insect_resource
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#
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## spawn possible placement locations :)
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#if used_cells.size() == 0: # we have no cells placed, display a placement outline at 0, 0
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#var outline = HEX_OUTLINE.instantiate()
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#var cubepos = Vector4i.new(0, 0, 0)
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#var hex_pos = cube_to_world_pos(cubepos)
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#outline.position = Vector3(hex_pos.x, 0.0, hex_pos.y)
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#outline.visible = true
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#outline.insect_resource = insect_resource
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#outline.is_black = is_black
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#outline.coordinates = cubepos
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#outline.map_reference = self
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#placement_visualizer.add_child(outline)
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#placements[hex_pos] = outline
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#elif used_cells.size() == 1: # we have ONE cell placed, this is a special case in which
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## the opposing player is allowed to place a tile that touches the enemy color
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## We display outline placement around all spaces of this single cell
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#var single_cell = used_cells.keys().front()
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#var neighbours = get_neighbours(Vector4i.new(single_cell.x, single_cell.y, single_cell.z))
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#for neighbour in neighbours:
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#var outline = HEX_OUTLINE.instantiate()
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#var hex_pos = cube_to_world_pos(neighbour)
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#outline.position = Vector3(hex_pos.x, 0.0, hex_pos.y)
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#outline.visible = true
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#outline.insect_resource = insect_resource
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#outline.is_black = is_black
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#outline.coordinates = neighbour
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#outline.map_reference = self
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#placement_visualizer.add_child(outline)
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#placements[hex_pos] = outline
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#else:
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## iterate over all used_cells, get all empty cells surrounding those cells
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## iterate over all those empty cells, check if they only neighbour the same color
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#var possible_placements: Dictionary = {}
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#
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#for hex in used_cells.keys():
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##var eligible: bool = true
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#for neighbour in get_empty_neighbours(Vector4i.new(hex.x, hex.y, hex.z)):
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#if not used_cells.has(Vector4(neighbour.q, neighbour.r, neighbour.s, 0)):
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#possible_placements[Vector4i(neighbour.q, neighbour.r, neighbour.s, 0)] = true
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#
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#for p in possible_placements:
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#var eligible: bool = true
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#
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#for neighbour in get_neighbours(Vector4i.new(p.x, p.y, p.z)):
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#if not used_cells.has(Vector4i(neighbour.q, neighbour.r, neighbour.s, 0)):
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#continue
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#
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#if used_cells[Vector4i(neighbour.q, neighbour.r, neighbour.s, 0)].is_black != is_black:
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#eligible = false
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#break
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#
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#if eligible:
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#var outline = HEX_OUTLINE.instantiate()
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#var hex_pos = cube_to_world_pos(Vector4i.new(p.x, p.y, p.z))
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#outline.position = Vector3(hex_pos.x, 0.0, hex_pos.y)
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#outline.visible = true
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#outline.insect_resource = insect_resource
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#outline.is_black = is_black
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#outline.coordinates = Vector4i.new(p.x, p.y, p.z)
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#outline.map_reference = self
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#placement_visualizer.add_child(outline)
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#placements[p] = outline
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func _on_insect_placement_cancelled() -> void:
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if current_tile:
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current_tile.queue_free()
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current_tile = null
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for child in placement_visualizer.get_children():
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child.queue_free()
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func _on_insect_placed(resource: TileResource, is_black: bool, pos: Vector4i) -> void:
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var tile_copy = INSECT_TILE.instantiate()
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var hex_pos = cube_to_world_pos(pos)
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tile_copy.position = Vector3(hex_pos.x, 20.0, hex_pos.y)
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tile_copy.resource = resource
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tile_copy.is_black = is_black
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tile_copy.coordinates = pos
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tile_copy.map_reference = self
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var target_pos = Vector3(hex_pos.x, 0.0, hex_pos.y)
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used_cells[pos] = tile_copy
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add_child(tile_copy)
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var tween = get_tree().create_tween()
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tween.tween_property(tile_copy, "position", target_pos, 1.0).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_EXPO)
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func can_move(tile: InsectTile) -> bool:
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return can_hive_exist_without_tile(tile)
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func _on_insect_tile_selected(tile: InsectTile) -> void:
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if not can_hive_exist_without_tile(tile):
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print("Would break hive")
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return
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if tile.resource.movement_behaviour == null:
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print("no movement behaviour")
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return
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var spaces = tile.resource.movement_behaviour.get_available_spaces(tile.coordinates, self)
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if spaces.is_empty():
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print("empty?")
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#GameEvents.insect_tile_selection_request_failed.emit(tile)
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return
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for space in spaces:
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var neighbours = get_neighbours(space)
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var non_empty_neighbours = neighbours.filter(is_cell_not_empty)
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if non_empty_neighbours.size() == 1:
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# NOTE: This is correct! But seemed wrong when testing the beetle movement
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# If there are only two tiles (beetle + some other) the beetle can't climb ontop of the other
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# tile. This fixes itself automatically when there are more than two tiles present
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# And since you can't move unless you place the bee, there will always be at least 3 tiles
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# before you can move your beetle
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var occupied_neighbour = non_empty_neighbours.front()
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if occupied_neighbour == tile.coordinates:
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continue
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var layer: int = 0
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var temp_tile: InsectTile = null
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if is_cell_not_empty(space):
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temp_tile = used_cells.get(space)
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layer = 1
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while tile.hat != null:
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layer += 1
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tile = tile.hat
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space.w = layer
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var outline = HEX_OUTLINE.instantiate()
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var hex_pos = cube_to_world_pos(space) # flat_hex_to_world_position(AxialCoordinates.new(space.x, space.y))
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outline.position = Vector3(hex_pos.x, layer * layer_height, hex_pos.y)
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outline.coordinates = space
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outline.visible = true
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outline.insect_tile = tile
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outline.is_moving = true
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outline.insect_resource = tile.resource
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outline.is_black = tile.is_black
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placement_visualizer.add_child(outline)
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placements[space] = outline
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func get_tile(pos: Vector4i) -> InsectTile:
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return used_cells.get(pos)
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func _on_insect_tile_moved(tile: InsectTile, target: Vector4i) -> void:
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used_cells.erase(tile.coordinates)
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var new_hex_pos = cube_to_world_pos(target)
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var sky_new_hex_pos = Vector3(new_hex_pos.x, 20.0, new_hex_pos.y)
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var ground_new_hex_pos = Vector3(new_hex_pos.x, target.w * layer_height, new_hex_pos.y)
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#
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var current_hex_pos = tile.position
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var sky_current_hex_pos = tile.position + Vector3(0.0, 20.0, 0.0)
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#
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var tween = get_tree().create_tween()
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tween.tween_property(tile, "position", sky_current_hex_pos, 0.5).set_ease(Tween.EASE_IN).set_trans(Tween.TRANS_EXPO)
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tween.tween_property(tile, "position", sky_new_hex_pos, 0.0)
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tween.tween_property(tile, "position", ground_new_hex_pos, 1.0).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_EXPO)
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tile.coordinates = target
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used_cells[tile.coordinates] = tile
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func get_same_neighbours(cell1: Vector4i, cell2: Vector4i) -> Array[Vector4i]:
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var neighbours1 = get_neighbours(cell1).filter(is_cell_not_empty)
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var neighbours2 = get_neighbours(cell2).filter(is_cell_not_empty)
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var shared_neighbours: Array[Vector4i] = []
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for n1 in neighbours1:
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for n2 in neighbours2:
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if n1 == n2:
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if n1 not in shared_neighbours:
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shared_neighbours.push_back(n1)
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return shared_neighbours
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func is_position_on_hive(pos: Vector4i) -> bool:
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return get_empty_neighbours(pos).size() < 6
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func can_hive_exist_without_tile(tile: InsectTile) -> bool:
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# TODO: BFS-Search from random cell to see if all other cells could still be reached when this
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# tile would be empty space
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if get_empty_neighbours(tile.coordinates).size() == 5: # we only have one real neighbour, so can't break anything
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return true
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# DO BFS
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var tiles_reached: Array = []
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var tiles_available: Array = used_cells.keys().filter(func(coords): return coords != tile.coordinates).filter(func(coords): coords.w != tile.coordinates.w)
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if tiles_available.size() <= 1:
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# If we only have 1 or 2 total tiles, we can always move
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# 1 tile should never happen
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# two... could theoretically but yeah
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return true
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# tiles_available has all remaining tiles, we just need to visit every tile from a (random) starting tile
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# and compare the size with these of all tiles - 1 (our to be moved one)
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var start: Vector4i = tiles_available.front()
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tiles_reached.push_back(start)
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var queue: Array[Vector4i] = [start]
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while queue.size() > 0:
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var m = queue.pop_front()
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for neighbour in get_neighbours(m):
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if neighbour not in tiles_reached and neighbour != tile.coordinates:
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if used_cells.has(neighbour):
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tiles_reached.push_back(neighbour)
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queue.push_back(neighbour)
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return tiles_reached.size() == used_cells.size() - 1
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func _ready() -> void:
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GameEvents.insect_selected.connect(_on_insect_selected)
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GameEvents.insect_placement_cancelled.connect(_on_insect_placement_cancelled)
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GameEvents.insect_placed.connect(_on_insect_placed)
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GameEvents.insect_tile_selected.connect(_on_insect_tile_selected)
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GameEvents.insect_tile_moved.connect(_on_insect_tile_moved)
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