def ray_casting_npc_player(npc_x, npc_y, blocked_doors, world_map, player_pos):
ox, oy = player_pos
xm, ym = mapping(ox, oy)
delta_x, delta_y = ox - npc_x, oy - npc_y
angle = math.atan2(delta_y, delta_x)
angle += math.pi
# ray casting
sin_a = math.sin(angle)
cos_a = math.cos(angle)
# verticals
x, dx = (xm + TILE, 1) if cos_a >= 0 else (xm, -1)
for i in range(int(abs(delta_x) // TILE)):
depth_v = (x - ox) / cos_a
yv = oy + depth_v * sin_a
tile_v = mapping(x + dx, yv)
if tile_v in world_map or tile_v in blocked_doors:
return False
x += dx * TILE
# horizontals
y, dy = (ym + TILE, 1) if sin_a >= 0 else (ym, -1)
for i in range(int(abs(delta_y) // TILE)):
depth_h = (y - oy) / sin_a
xh = ox + depth_h * cos_a
tile_h = mapping(xh, y + dy)
if tile_h in world_map or tile_h in blocked_doors:
return False
y += dy * TILE
return True
def ray_casting_npc_player(npc_x, npc_y, world_map, player_pos):
ox, oy = player_pos
xm, ym = mapping(ox, oy)
delta_x, delta_y = ox - npc_x, oy - npc_y
cur_angle = math.atan2(delta_y, delta_x)
cur_angle += math.pi
sin_a = math.sin(cur_angle)
sin_a = sin_a if sin_a else 0.000001
cos_a = math.cos(cur_angle)
cos_a = cos_a if cos_a else 0.000001
# verticals
x, dx = (xm + TILE, 1) if cos_a >= 0 else (xm, -1)
for i in range(0, int(abs(delta_x)) // TILE):
depth_v = (x - ox) / cos_a
yv = oy + depth_v * sin_a
tile_v = mapping(x + dx, yv)
if tile_v in world_map:
return False
x += dx * TILE
# horizontals
y, dy = (ym + TILE, 1) if sin_a >= 0 else (ym, -1)
for i in range(0, int(abs(delta_y)) // TILE):
depth_h = (y - oy) / sin_a
xh = ox + depth_h * cos_a
tile_h = mapping(xh, y + dy)
if tile_h in world_map:
return False
y += dy * TILE
return True
def blocked_doors(self):
blocked_doors = Dict.empty(key_type=types.UniTuple(int32, 2), value_type=int32)
for obj in self.list_of_objects:
if obj.flag in {'door_h', 'door_v'} and obj.blocked:
i, j = mapping(obj.x, obj.y)
blocked_doors[(i, j)] = 0
return blocked_doors
def ray_casting_npc_player(npc_x, npc_y, blocked_doors, world_map, player_pos):
"""
Sent one ray and define if player is reachable by npc
:param npc_x:
:param npc_y:
:param world_map:
:param player_pos:
:return: True/False
"""
ox, oy = player_pos
xm, ym = mapping(ox, oy)
delta_x, delta_y = ox - npc_x, oy - npc_y
cur_angle = math.atan2(delta_y, delta_x)
cur_angle += math.pi
sin_a = math.sin(cur_angle)
sin_a = sin_a if sin_a else 0.000001
cos_a = math.cos(cur_angle)
cos_a = cos_a if cos_a else 0.000001
# verticals
x, dx = (xm + TILE, 1) if cos_a >= 0 else (xm, -1)
for i in range(0, int(abs(delta_x)) // TILE):
depth_v = (x - ox) / cos_a
yv = oy + depth_v * sin_a
tile_v = mapping(x + dx, yv)
# Check for blocked_doors. NPC doesn't see the player through the doors.
if tile_v in world_map or tile_v in blocked_doors:
return False
x += dx * TILE
# horizontals
y, dy = (ym + TILE, 1) if sin_a >= 0 else (ym, -1)
for i in range(0, int(abs(delta_y)) // TILE):
depth_h = (y - oy) / sin_a
xh = ox + depth_h * cos_a
tile_h = mapping(xh, y + dy)
# Check for blocked_doors. NPC doesn't see the player through the doors.
if tile_h in world_map or tile_h in blocked_doors:
return False
y += dy * TILE
return True
def blocked_doors(self):
"""
All closed doors on the map
:return:
"""
blocked_doors = Dict.empty(key_type=types.UniTuple(int32, 2),
value_type=int32)
for obj in self.list_of_objects:
if obj.flag in {"door_h", "door_v"} and obj.blocked:
i, j = mapping(obj.x, obj.y)
blocked_doors[(i, j)] = 0
return blocked_doors
