308 lines
6.5 KiB
GDScript
308 lines
6.5 KiB
GDScript
extends Panel
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# 游戏常量
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const GRID_SIZE = 4
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const CELL_SIZE = 90
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const CELL_MARGIN = 10
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# 数字颜色配置
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const NUMBER_COLORS = {
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0: Color.TRANSPARENT,
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2: Color(0.93, 0.89, 0.85),
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4: Color(0.93, 0.88, 0.78),
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8: Color(0.95, 0.69, 0.47),
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16: Color(0.96, 0.58, 0.39),
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32: Color(0.96, 0.49, 0.37),
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64: Color(0.96, 0.37, 0.23),
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128: Color(0.93, 0.81, 0.45),
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256: Color(0.93, 0.80, 0.38),
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512: Color(0.93, 0.78, 0.31),
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1024: Color(0.93, 0.77, 0.25),
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2048: Color(0.93, 0.76, 0.18)
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}
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const TEXT_COLORS = {
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2: Color.BLACK,
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4: Color.BLACK,
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8: Color.WHITE,
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16: Color.WHITE,
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32: Color.WHITE,
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64: Color.WHITE,
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128: Color.WHITE,
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256: Color.WHITE,
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512: Color.WHITE,
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1024: Color.WHITE,
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2048: Color.WHITE
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}
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# 游戏变量
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var grid = []
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var score = 0
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var best_score = 0
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var game_over = false
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var won = false
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var can_continue = true
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# 节点引用
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@onready var game_board = $GameBoard
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@onready var score_label = $ScoreLabel
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@onready var best_label = $BestLabel
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@onready var game_over_label = $GameOverLabel
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@onready var win_label = $WinLabel
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func _ready():
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# 设置游戏板样式
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game_board.modulate = Color(0.7, 0.6, 0.5)
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# 初始化游戏
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init_game()
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func init_game():
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# 重置游戏状态
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game_over = false
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won = false
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can_continue = true
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score = 0
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# 初始化网格
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grid.clear()
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for y in range(GRID_SIZE):
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var row = []
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for x in range(GRID_SIZE):
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row.append(0)
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grid.append(row)
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# 添加两个初始数字
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add_random_number()
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add_random_number()
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# 更新UI
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update_ui()
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hide_labels()
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queue_redraw()
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func _input(event):
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if event is InputEventKey and event.pressed:
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if game_over:
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if event.keycode == KEY_R:
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init_game()
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return
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if won and not can_continue:
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if event.keycode == KEY_C:
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can_continue = true
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win_label.visible = false
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return
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# 移动控制
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var moved = false
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match event.keycode:
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KEY_UP, KEY_W:
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moved = move_up()
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KEY_DOWN, KEY_S:
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moved = move_down()
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KEY_LEFT, KEY_A:
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moved = move_left()
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KEY_RIGHT, KEY_D:
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moved = move_right()
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KEY_R:
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init_game()
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return
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if moved:
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add_random_number()
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update_ui()
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check_game_state()
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queue_redraw()
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func move_left() -> bool:
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var moved = false
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for y in range(GRID_SIZE):
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var row = grid[y].duplicate()
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var new_row = merge_line(row)
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if new_row != grid[y]:
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moved = true
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grid[y] = new_row
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return moved
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func move_right() -> bool:
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var moved = false
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for y in range(GRID_SIZE):
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var row = grid[y].duplicate()
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row.reverse()
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var new_row = merge_line(row)
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new_row.reverse()
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if new_row != grid[y]:
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moved = true
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grid[y] = new_row
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return moved
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func move_up() -> bool:
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var moved = false
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for x in range(GRID_SIZE):
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var column = []
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for y in range(GRID_SIZE):
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column.append(grid[y][x])
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var new_column = merge_line(column)
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var changed = false
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for y in range(GRID_SIZE):
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if grid[y][x] != new_column[y]:
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changed = true
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grid[y][x] = new_column[y]
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if changed:
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moved = true
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return moved
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func move_down() -> bool:
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var moved = false
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for x in range(GRID_SIZE):
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var column = []
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for y in range(GRID_SIZE):
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column.append(grid[y][x])
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column.reverse()
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var new_column = merge_line(column)
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new_column.reverse()
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var changed = false
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for y in range(GRID_SIZE):
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if grid[y][x] != new_column[y]:
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changed = true
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grid[y][x] = new_column[y]
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if changed:
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moved = true
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return moved
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func merge_line(line: Array) -> Array:
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# 移除零
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var filtered = []
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for num in line:
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if num != 0:
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filtered.append(num)
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# 合并相同数字
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var merged = []
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var i = 0
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while i < filtered.size():
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if i < filtered.size() - 1 and filtered[i] == filtered[i + 1]:
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# 合并
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var new_value = filtered[i] * 2
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merged.append(new_value)
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score += new_value
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i += 2
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else:
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merged.append(filtered[i])
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i += 1
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# 填充零到指定长度
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while merged.size() < GRID_SIZE:
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merged.append(0)
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return merged
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func add_random_number():
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var empty_cells = []
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for y in range(GRID_SIZE):
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for x in range(GRID_SIZE):
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if grid[y][x] == 0:
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empty_cells.append(Vector2(x, y))
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if empty_cells.size() > 0:
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var random_cell = empty_cells[randi() % empty_cells.size()]
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var value = 2 if randf() < 0.9 else 4
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grid[random_cell.y][random_cell.x] = value
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func check_game_state():
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# 检查是否达到2048
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if not won:
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for y in range(GRID_SIZE):
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for x in range(GRID_SIZE):
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if grid[y][x] == 2048:
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won = true
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can_continue = false
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win_label.visible = true
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return
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# 检查是否游戏结束
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if not can_move():
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game_over = true
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if score > best_score:
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best_score = score
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game_over_label.visible = true
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func can_move() -> bool:
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# 检查是否有空格
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for y in range(GRID_SIZE):
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for x in range(GRID_SIZE):
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if grid[y][x] == 0:
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return true
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# 检查是否可以合并
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for y in range(GRID_SIZE):
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for x in range(GRID_SIZE):
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var current = grid[y][x]
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# 检查右边
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if x < GRID_SIZE - 1 and grid[y][x + 1] == current:
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return true
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# 检查下面
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if y < GRID_SIZE - 1 and grid[y + 1][x] == current:
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return true
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return false
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func update_ui():
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score_label.text = "分数: " + str(score)
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best_label.text = "最高分: " + str(best_score)
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func hide_labels():
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game_over_label.visible = false
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win_label.visible = false
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func _draw():
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if not game_board:
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return
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# 获取游戏板位置
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var board_pos = game_board.position
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# 绘制网格背景
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for y in range(GRID_SIZE):
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for x in range(GRID_SIZE):
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var cell_x = board_pos.x + x * (CELL_SIZE + CELL_MARGIN) + CELL_MARGIN
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var cell_y = board_pos.y + y * (CELL_SIZE + CELL_MARGIN) + CELL_MARGIN
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var rect = Rect2(cell_x, cell_y, CELL_SIZE, CELL_SIZE)
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# 绘制单元格背景
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draw_rect(rect, Color(0.8, 0.7, 0.6), true)
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# 绘制数字
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var value = grid[y][x]
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if value > 0:
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# 绘制数字背景
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var bg_color = NUMBER_COLORS.get(value, Color.GOLD)
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draw_rect(rect, bg_color, true)
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# 绘制数字文本
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var text = str(value)
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var font_size = 24 if value < 100 else (20 if value < 1000 else 16)
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var text_color = TEXT_COLORS.get(value, Color.WHITE)
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# 获取默认字体
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var font = ThemeDB.fallback_font
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# 计算文本尺寸
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var text_size = font.get_string_size(text, HORIZONTAL_ALIGNMENT_CENTER, -1, font_size)
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# 计算文本位置（居中）
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var text_pos = Vector2(
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cell_x + (CELL_SIZE - text_size.x) / 2,
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cell_y + (CELL_SIZE - text_size.y) / 2 + text_size.y
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)
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# 绘制文本
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draw_string(font, text_pos, text, HORIZONTAL_ALIGNMENT_LEFT, -1, font_size, text_color)
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