import pygame import sys import math import random import os # 初始化Pygame pygame.init() # 屏幕设置 WINDOW_WIDTH = 800 WINDOW_HEIGHT = 600 screen = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT)) pygame.display.set_caption("七巧板模拟") # 颜色 COLORS = { 'background': (240, 240, 240), 'grid': (200, 200, 200), 'red': (255, 99, 71), 'blue': (70, 130, 180), 'green': (60, 179, 113), 'yellow': (255, 215, 0), 'purple': (138, 43, 226), 'orange': (255, 165, 0), 'pink': (255, 105, 180), } # ========== 中文字体支持 ========== def get_chinese_font(size): """获取支持中文的字体""" # 尝试常见的中文字体路径 font_paths = [ # Windows "C:/Windows/Fonts/simsun.ttc", # 宋体 "C:/Windows/Fonts/simhei.ttf", # 黑体 "C:/Windows/Fonts/msyh.ttc", # 微软雅黑 "C:/Windows/Fonts/STKAITI.TTF", # 楷体 # macOS "/System/Library/Fonts/PingFang.ttc", "/System/Library/Fonts/STHeiti Light.ttc", # Linux "/usr/share/fonts/truetype/wqy/wqy-microhei.ttc", "/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc", "/usr/share/fonts/truetype/arphic/uming.ttc", ] for path in font_paths: if os.path.exists(path): try: return pygame.font.Font(path, size) except: continue # 如果都找不到，使用默认字体（可能不支持中文，但不会报错） return pygame.font.Font(None, size) # 创建字体对象 FONT_SMALL = get_chinese_font(20) FONT_MEDIUM = get_chinese_font(28) FONT_LARGE = get_chinese_font(36) # 板块形状定义（相对坐标，后续会缩放） # 每个形状由顶点列表定义（逆时针顺序） SHAPES = { '大三角形1': { 'color': COLORS['red'], 'points': [(0, 0), (1, 0), (0.5, 0.5)], 'offset': (0, 0) }, '大三角形2': { 'color': COLORS['blue'], 'points': [(0, 0), (1, 0), (0.5, 0.5)], 'offset': (1.5, 0) }, '中三角形': { 'color': COLORS['green'], 'points': [(0, 0), (1, 0), (0.5, 0.5)], 'offset': (0, 1.5) }, '小三角形1': { 'color': COLORS['yellow'], 'points': [(0, 0), (0.5, 0), (0.25, 0.25)], 'offset': (2, 1.5) }, '小三角形2': { 'color': COLORS['purple'], 'points': [(0, 0), (0.5, 0), (0.25, 0.25)], 'offset': (3, 0) }, '正方形': { 'color': COLORS['orange'], 'points': [(0, 0), (0.4, 0), (0.4, 0.4), (0, 0.4)], 'offset': (3, 2.5) }, '平行四边形': { 'color': COLORS['pink'], 'points': [(0, 0), (0.6, 0), (0.4, 0.4), (-0.2, 0.4)], 'offset': (1.5, 3) } } class TangramPiece: """七巧板块类""" def __init__(self, name, color, points, offset, scale=80): self.name = name self.color = color self.scale = scale self.angle = 0 self.dragging = False self.drag_offset = (0, 0) # 初始位置（像素坐标） self.pos = (offset[0] * scale + 100, offset[1] * scale + 50) # 原始顶点（归一化坐标） self.original_points = points self.original_center = self._calculate_center(points) # 当前顶点（世界坐标） self.world_points = [] self._update_points() def _calculate_center(self, points): """计算多边形中心""" cx = sum(p[0] for p in points) / len(points) cy = sum(p[1] for p in points) / len(points) return (cx, cy) def _update_points(self): """更新世界坐标顶点""" world_pts = [] for x, y in self.original_points: dx = x - self.original_center[0] dy = y - self.original_center[1] dx *= self.scale dy *= self.scale angle_rad = math.radians(self.angle) cos_a = math.cos(angle_rad) sin_a = math.sin(angle_rad) rx = dx * cos_a - dy * sin_a ry = dx * sin_a + dy * cos_a wx = self.pos[0] + rx wy = self.pos[1] + ry world_pts.append((wx, wy)) self.world_points = world_pts def draw(self, surface): """绘制板块""" if len(self.world_points) >= 3: pygame.draw.polygon(surface, self.color, self.world_points) pygame.draw.polygon(surface, (50, 50, 50), self.world_points, 2) def contains_point(self, point): """检测点是否在板块内（使用射线法）""" x, y = point inside = False n = len(self.world_points) for i in range(n): x1, y1 = self.world_points[i] x2, y2 = self.world_points[(i + 1) % n] if ((y1 > y) != (y2 > y)): x_intersect = x1 + (x2 - x1) * (y - y1) / (y2 - y1) if x < x_intersect: inside = not inside return inside def set_position(self, pos): """设置位置""" self.pos = pos self._update_points() def move(self, delta): """移动板块""" self.pos = (self.pos[0] + delta[0], self.pos[1] + delta[1]) self._update_points() def rotate(self, angle_delta): """旋转板块""" self.angle = (self.angle + angle_delta) % 360 self._update_points() def get_bounding_box(self): """获取边界框""" if not self.world_points: return (0, 0, 0, 0) xs = [p[0] for p in self.world_points] ys = [p[1] for p in self.world_points] return (min(xs), min(ys), max(xs), max(ys)) class TangramSimulation: """七巧板模拟主类""" def __init__(self): self.pieces = [] self.selected_piece = None self.dragging_piece = None self.show_help = True # 初始化板块 scale = 70 for name, data in SHAPES.items(): offset_x = data['offset'][0] * scale + random.randint(-10, 10) offset_y = data['offset'][1] * scale + random.randint(-10, 10) piece = TangramPiece( name=name, color=data['color'], points=data['points'], offset=(offset_x/scale, offset_y/scale), scale=scale ) self.pieces.append(piece) def handle_event(self, event): """处理事件""" if event.type == pygame.QUIT: return False elif event.type == pygame.MOUSEBUTTONDOWN: if event.button == 1: for piece in reversed(self.pieces): if piece.contains_point(event.pos): self.selected_piece = piece self.dragging_piece = piece piece.dragging = True piece.drag_offset = (piece.pos[0] - event.pos[0], piece.pos[1] - event.pos[1]) self.pieces.remove(piece) self.pieces.append(piece) break elif event.button == 4: if self.selected_piece: self.selected_piece.rotate(15) elif event.button == 5: if self.selected_piece: self.selected_piece.rotate(-15) elif event.type == pygame.MOUSEBUTTONUP: if event.button == 1: if self.dragging_piece: self.dragging_piece.dragging = False self.dragging_piece = None elif event.type == pygame.MOUSEMOTION: if self.dragging_piece: new_pos = (event.pos[0] + self.dragging_piece.drag_offset[0], event.pos[1] + self.dragging_piece.drag_offset[1]) self.dragging_piece.set_position(new_pos) elif event.type == pygame.KEYDOWN: if event.key == pygame.K_r and self.selected_piece: self.selected_piece.angle = 0 self.selected_piece._update_points() elif event.key == pygame.K_h: self.show_help = not self.show_help elif event.key == pygame.K_SPACE: self.reset_pieces() return True def reset_pieces(self): """重置所有板块到初始位置""" scale = 70 for name, data in SHAPES.items(): piece = next((p for p in self.pieces if p.name == name), None) if piece: offset_x = data['offset'][0] * scale + 100 offset_y = data['offset'][1] * scale + 50 piece.set_position((offset_x, offset_y)) piece.angle = 0 piece._update_points() def draw(self, surface): """绘制所有内容""" surface.fill(COLORS['background']) # 绘制网格参考线 for x in range(0, WINDOW_WIDTH, 50): pygame.draw.line(surface, COLORS['grid'], (x, 0), (x, WINDOW_HEIGHT), 1) for y in range(0, WINDOW_HEIGHT, 50): pygame.draw.line(surface, COLORS['grid'], (0, y), (WINDOW_WIDTH, y), 1) # 绘制所有板块 for piece in self.pieces: piece.draw(surface) # 显示选中板块信息（使用中文字体） if self.selected_piece: info_text = f"选中: {self.selected_piece.name} | 角度: {self.selected_piece.angle:.0f}°" info_surf = FONT_MEDIUM.render(info_text, True, (50, 50, 50)) surface.blit(info_surf, (10, 10)) # 显示帮助信息（使用中文字体） if self.show_help: help_lines = [ "七巧板模拟 - 操作说明", "点击拖拽: 移动板块", "滚轮: 旋转选中板块", "R键: 重置选中板块旋转", "空格键: 重置所有板块位置", "H键: 切换帮助显示", "", "提示: 点击选中板块后即可操作" ] y_offset = WINDOW_HEIGHT - len(help_lines) * 28 - 10 for line in help_lines: text_surf = FONT_SMALL.render(line, True, (80, 80, 80)) surface.blit(text_surf, (10, y_offset)) y_offset += 28 # 标题（使用中文字体） title = FONT_LARGE.render("七巧板模拟", True, (30, 30, 30)) surface.blit(title, (WINDOW_WIDTH - 180, 10)) def main(): clock = pygame.time.Clock() sim = TangramSimulation() running = True while running: for event in pygame.event.get(): if not sim.handle_event(event): running = False sim.draw(screen) pygame.display.flip() clock.tick(60) pygame.quit() sys.exit() if __name__ == "__main__": main()