change a lot

main.py

@@ -1,6 +1,6 @@
 import pygame
 
-from module import WIDTH, HEIGHT, BLOCK_SIZE, PLAYER_SPEED, GRAVITY, COLORS
+from module import WIDTH, HEIGHT, BLOCK_SIZE, PLAYER_SPEED, GRAVITY, COLORS, OPTIONS
 from module.block import GrassBlock, StoneBlock, SandBlock, WaterBlock
 from module.player import Player
 from module.utils import generate_terrain
@@ -31,6 +31,7 @@ while running:
                     player.put_block(bx, by)
             elif event.button == 3:  # 右键拆除方块
                 player.put_block(bx, by, 'delete')
+                player.on_ground = False  # 不完美解决方法，挖方块时更新状态
         elif event.type == pygame.KEYDOWN:
             if event.key == pygame.K_1:
                 player.select_block(GrassBlock)
@@ -49,20 +50,16 @@ while running:
         player.move(PLAYER_SPEED, 0)
     if keys[pygame.K_w]:
         player.jump()
+    if keys[pygame.K_F3]:
+        OPTIONS["debug"] = True
+    if keys[pygame.K_F4]:
+        OPTIONS["debug"] = False
 
     # 物理模拟
-    player.velocity += GRAVITY
+    if not player.on_ground:
+        player.velocity = GRAVITY
         player.move(0, player.velocity)
 
-    # 碰撞检测
-    px = int(player.x // BLOCK_SIZE)
-    py = int(player.y // BLOCK_SIZE)
-    if py < len(world[px]) - 1 and world[px][py + 1] != "air":
-        player.on_ground = True
-        player.velocity = 0
-    else:
-        player.on_ground = False
-
     # 绘制世界
     screen.fill(COLORS["air"])
     for row in world:
@@ -74,13 +71,22 @@ while running:
             pygame.draw.rect(screen, block.color, rect)
 
     # 绘制玩家
-    pygame.draw.circle(screen, COLORS["player"], (player.x, player.y), 10)
+    player.draw(screen)
 
     # 显示提示文字
     font = pygame.font.SysFont('KaiTi', 24)
     text = font.render(f"Selected: {player.selected_block.id} (1-4切换方块)", True, (255, 255, 255))
     screen.blit(text, (10, 10))
 
+    # Debug Mode
+    if OPTIONS["debug"]:
+        debug_text = font.render("调试模式", True, (255, 255, 255))
+        screen.blit(debug_text, (10, 34))
+        for row in world:
+            for block in row:
+                if block.check_collision(player) and block.id != "air":
+                    pygame.draw.circle(screen, COLORS["player"], block.get_center_vector(), 2)
+
     pygame.display.flip()
     clock.tick(60)
 

module/__init__.py

@@ -13,6 +13,11 @@ COLORS = {
 
 # 游戏参数
 BLOCK_SIZE = 20
-GRAVITY = 0.5
+GRAVITY = 3
 PLAYER_SPEED = 5
-JUMP_FORCE = -12
+JUMP_FORCE = -36
+PLAYER_SIZE = 20
+
+OPTIONS = {
+    "debug": False
+}

module/block.py

@@ -1,4 +1,10 @@
-from module import COLORS
+from module import COLORS, BLOCK_SIZE, PLAYER_SIZE
+from typing import TYPE_CHECKING
+
+# 解决循环导入
+if TYPE_CHECKING:
+    from module.player import Player
+
 
 class Block:
     id = ''
@@ -11,11 +17,45 @@ class Block:
         self.x = x
         self.y = y
 
-    def get_screen_x(self):
+    def get_screen_x(self) -> int:
-        return self.x * 20
+        return self.x * BLOCK_SIZE
 
-    def get_screen_y(self):
+    def get_screen_y(self) -> int:
-        return self.y * 20
+        return self.y * BLOCK_SIZE
+
+    def check_collision(self, player: 'Player') -> bool:
+        # 将玩家的碰撞体积看作为一个正方形，其形心坐标为 (player.x, player.y)
+        # 方块的坐标，即其的 (x, y) 是在 world 中的下标，需要将其转换为坐标
+        # 由于 下标*边长 计算得到的是这个方块左上角的坐标，所以要添加偏移量
+        # 计算得到形心坐标，偏移量是方块大小的一半
+        real_x = self.x * BLOCK_SIZE + BLOCK_SIZE / 2
+        real_y = self.y * BLOCK_SIZE + BLOCK_SIZE / 2
+        # 判断其是否碰撞仅需看其两形心间的距离，如果玩家的形心落在了方块碰撞
+        # 区域内，则发生碰撞，否则不发生碰撞。方块碰撞检测区域位于同形心坐标
+        # 边长为 PLAYER_SIZE + BLOCK_SIZE 的矩形区域
+        # 定界：
+        left = real_x - (PLAYER_SIZE + BLOCK_SIZE) / 2
+        right = real_x + (PLAYER_SIZE + BLOCK_SIZE) / 2
+
+        top = real_y - (PLAYER_SIZE + BLOCK_SIZE) / 2
+        bottom = real_y + (PLAYER_SIZE + BLOCK_SIZE) / 2
+        # 判碰撞：
+        return left < player.x < right and top < player.y < bottom
+
+    def get_collision_surface(self) -> tuple[int]:
+        # 获得方块表面界限（碰撞面）
+        # 上、右、下、左
+        real_x = self.x * BLOCK_SIZE + BLOCK_SIZE / 2
+        real_y = self.y * BLOCK_SIZE + BLOCK_SIZE / 2
+
+        top = real_y - BLOCK_SIZE / 2
+        bottom = real_y + BLOCK_SIZE / 2
+        left = real_x - BLOCK_SIZE / 2
+        right = real_x + BLOCK_SIZE / 2
+        return top, right, bottom, left
+
+    def get_center_vector(self):
+        return self.x * BLOCK_SIZE + BLOCK_SIZE / 2, self.y * BLOCK_SIZE + BLOCK_SIZE / 2
 
 
 class GrassBlock(Block):

module/player.py

@@ -1,6 +1,8 @@
 from typing import Type, Literal
 
-from module import WIDTH, HEIGHT, JUMP_FORCE
+import pygame
+
+from module import WIDTH, HEIGHT, JUMP_FORCE, COLORS, PLAYER_SIZE, OPTIONS, BLOCK_SIZE
 from module.block import AirBlock, Block
 
 
@@ -14,28 +16,47 @@ class Player:
         self.selected_block = AirBlock
         self.world = world
 
-    def move(self, dx, dy):
+    def move(self, dx: float, dy: float):
-        world_position = {'x': int(self.x) // 20, 'y': int(self.y) // 20}
+        # 仅需检测玩家当前区块的上下左右的方块是否有碰撞体积
+        block_x_idx = int(self.x) // BLOCK_SIZE
+        block_y_idx = int(self.y) // BLOCK_SIZE
 
-        # TODO：Need to judgment x and y in order not to raise Index Out Of Range Error
+        top_block = self.world[block_x_idx][block_y_idx - 1] if block_y_idx > 0 else None
-        top_block = self.world[world_position['x']][world_position['y'] - 1]
+        bottom_block = self.world[block_x_idx][block_y_idx + 1] if block_y_idx < HEIGHT // 20 - 1 else None
-        button_block = self.world[world_position['x']][world_position['y'] + 1]
+        left_block = self.world[block_x_idx - 1][block_y_idx] if block_x_idx > 0 else None
-        left_block = self.world[world_position['x'] - 1][world_position['y']]
+        right_block = self.world[block_x_idx + 1][block_y_idx] if block_x_idx < WIDTH // 20 - 1 else None
-        right_block = self.world[world_position['x'] + 1][world_position['y']]
 
-        if dx < 0 and left_block.collision:
+        # 无碰撞体积时加 dx dy 有碰撞体积时，限制其值
-            new_x = left_block.get_screen_x() + 30
+        # 向下移动时且下面方块有碰撞体积，与上表面碰撞
-        elif dx > 0 and right_block.collision:
+        if dy > 0 and bottom_block is not None and bottom_block.collision:
-            new_x = right_block.get_screen_x() - 10
+            if bottom_block.check_collision(self):
-        else:
+                new_y = bottom_block.get_collision_surface()[0] - 10
-            new_x = self.x + dx
+                self.on_ground = True
-
-        if dy < 0 and top_block.collision:
-            new_y = top_block.get_screen_y() + 30
-        elif dy > 0 and button_block.collision:
-            new_y = button_block.get_screen_y() - 10
             else:
                 new_y = self.y + dy
+        # 向上移动时且上面方块有碰撞体积，与下表面碰撞
+        elif dy < 0 and top_block is not None and top_block.collision:
+            if top_block.check_collision(self):
+                new_y = top_block.get_collision_surface()[2] + 10
+            else:
+                new_y = self.y + dy
+        else:
+            new_y = self.y + dy
+
+        # 右移动
+        if dx > 0 and right_block is not None and right_block.collision:
+            if right_block.check_collision(self):
+                new_x = right_block.get_collision_surface()[3] - 10
+            else:
+                new_x = self.x + dx
+        # 左移动
+        elif dx < 0 and left_block is not None and left_block.collision:
+            if left_block.check_collision(self):
+                new_x = left_block.get_collision_surface()[1] + 10
+            else:
+                new_x = self.x + dx
+        else:
+            new_x = self.x + dx
 
         if 0 <= new_x < WIDTH and 0 <= new_y < HEIGHT:
             self.x = new_x
@@ -43,7 +64,7 @@ class Player:
 
     def jump(self):
         if self.on_ground:
-            self.velocity = JUMP_FORCE
+            self.y += JUMP_FORCE
         self.on_ground = False
 
     def select_block(self, block: Type[Block]):
@@ -56,3 +77,14 @@ class Player:
             self.world[x][y] = AirBlock(x, y)
         else:
             pass
+
+    def draw(self, screen: pygame.Surface):
+        pygame.draw.circle(screen, COLORS["player"], (self.x, self.y), PLAYER_SIZE // 2)
+        self.move(0, 0)
+        # 绘制玩家所在区块颜色
+        if OPTIONS['debug']:
+            block_x = int(self.x) // BLOCK_SIZE * BLOCK_SIZE
+            block_y = int(self.y) // BLOCK_SIZE * BLOCK_SIZE
+
+            rect = pygame.Rect(block_x, block_y, BLOCK_SIZE, BLOCK_SIZE)
+            pygame.draw.rect(screen, '#ffd5004d', rect)