110 lines
3.1 KiB
Python
110 lines
3.1 KiB
Python
from module import COLORS, BLOCK_SIZE, PLAYER_SIZE
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from typing import TYPE_CHECKING
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# 解决循环导入
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if TYPE_CHECKING:
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from module.player import Player
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class Block:
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id = ''
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color = ''
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flowable = False # 可流动
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fallible = False # 可下坠
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collision = True # 可以碰撞
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def __init__(self, x: int, y: int):
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self.x = x
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self.y = y
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def get_screen_x(self) -> int:
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return self.x * BLOCK_SIZE
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def get_screen_y(self) -> int:
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return self.y * BLOCK_SIZE
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def check_collision(self, player: 'Player') -> bool:
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# 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)
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# 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
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# 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
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# 计算得到形心坐标，偏移量是方块大小的一半
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real_x = self.x * BLOCK_SIZE + BLOCK_SIZE / 2
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real_y = self.y * BLOCK_SIZE + BLOCK_SIZE / 2
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# 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
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# 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
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# 边长为 PLAYER_SIZE + BLOCK_SIZE 的矩形区域
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# 定界：
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left = real_x - (PLAYER_SIZE + BLOCK_SIZE) / 2
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right = real_x + (PLAYER_SIZE + BLOCK_SIZE) / 2
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top = real_y - (PLAYER_SIZE + BLOCK_SIZE) / 2
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bottom = real_y + (PLAYER_SIZE + BLOCK_SIZE) / 2
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# 判碰撞：
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return left < player.x < right and top < player.y < bottom
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def get_collision_surface(self) -> tuple[int]:
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# 获得方块表面界限（碰撞面）
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# 上、右、下、左
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real_x = self.x * BLOCK_SIZE + BLOCK_SIZE / 2
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real_y = self.y * BLOCK_SIZE + BLOCK_SIZE / 2
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top = real_y - BLOCK_SIZE / 2
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bottom = real_y + BLOCK_SIZE / 2
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left = real_x - BLOCK_SIZE / 2
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right = real_x + BLOCK_SIZE / 2
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return top, right, bottom, left
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def get_center_vector(self):
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return self.x * BLOCK_SIZE + BLOCK_SIZE / 2, self.y * BLOCK_SIZE + BLOCK_SIZE / 2
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class GrassBlock(Block):
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id = 'grass'
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color = COLORS.get(id)
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def __init__(self, x: int, y: int):
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super().__init__(x, y)
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class DirtBlock(Block):
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id = 'dirt'
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color = COLORS.get(id)
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def __init__(self, x: int, y: int):
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super().__init__(x, y)
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class SandBlock(Block):
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id = 'sand'
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color = COLORS.get(id)
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flowable = True
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def __init__(self, x: int, y: int):
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super().__init__(x, y)
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class StoneBlock(Block):
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id = 'stone'
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color = COLORS.get(id)
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def __init__(self, x: int, y: int):
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super().__init__(x, y)
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class AirBlock(Block):
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id = 'air'
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color = COLORS.get(id)
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collision = False
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def __init__(self, x: int, y: int):
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super().__init__(x, y)
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class WaterBlock(Block):
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id = 'water'
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color = COLORS.get(id)
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flowable = True
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collision = False
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def __init__(self, x: int, y: int):
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super().__init__(x, y) |