def get_next_waypoint_along_path(self, agent_entity: WorldEntity) -> Optional[Tuple[int, int]]:
if self.path:
# -----------------------------------------------
# 1: Remove first waypoint if close enough to it
# -----------------------------------------------
# TODO: Does this cause problems for specific entity sizes / movement speeds?
closeness_margin = 50
if is_x_and_y_within_distance(agent_entity.get_position(), self.path[0], closeness_margin):
# print("Popping " + str(self.path[0]) + " as I'm so close to it.")
self.path.pop(0)
if self.path:
# print("After popping, returning " + str(self.path[0]))
return self.path[0]
else:
# print("no path after popping. stopping.")
return None
# -----------------------------------------------
# 2: Remove first waypoint if it's opposite direction of second waypoint
# -----------------------------------------------
if len(self.path) >= 2:
dir_to_waypoint_0 = get_directions_to_position(agent_entity, self.path[0])[0]
dir_to_waypoint_1 = get_directions_to_position(agent_entity, self.path[1])[0]
if dir_to_waypoint_0 == get_opposite_direction(dir_to_waypoint_1):
# print("Not gonna go back. Popping " + str(self.path[0]))
self.path.pop(0)
# print("Popped first position. Next waypoint: " + str(self.path[0]))
return self.path[0]
if self.path:
return self.path[0]
else:
# print("no path found. stopping.")
return None
# print("Leaked through. returning none")
return None
def __init__(self,
npc_type: NpcType,
world_entity: WorldEntity,
health_resource: HealthOrManaResource,
npc_mind,
npc_category: NpcCategory,
enemy_loot_table: Optional[LootTableId],
death_sound_id: Optional[SoundId],
max_distance_allowed_from_start_position: Optional[int],
is_boss: bool = False):
self.npc_type = npc_type
self.world_entity = world_entity
self.health_resource = health_resource
self.npc_mind = npc_mind
self.active_buffs: List[BuffWithDuration] = []
self.invulnerable: bool = False
self.stun_status = StunStatus()
self.npc_category = npc_category
self.is_enemy = npc_category == NpcCategory.ENEMY
self.is_neutral = npc_category == NpcCategory.NEUTRAL
self.enemy_loot_table = enemy_loot_table
self.death_sound_id = death_sound_id
self.start_position = world_entity.get_position(
) # Only for neutral NPC
self.max_distance_allowed_from_start_position = max_distance_allowed_from_start_position # Only for neutral NPC
self.is_boss: bool = is_boss
self.quest_giver_state: Optional[
QuestGiverState] = None # Only for neutral NPC
def update_path_towards_target(self, agent_entity: WorldEntity, game_state: GameState, target_entity: WorldEntity):
agent_cell = _translate_world_position_to_cell(agent_entity.get_position(),
game_state.game_world.entire_world_area)
target_cell = _translate_world_position_to_cell(target_entity.get_position(),
game_state.game_world.entire_world_area)
agent_cell_size = (agent_entity.pygame_collision_rect.w // GRID_CELL_WIDTH + 1,
agent_entity.pygame_collision_rect.h // GRID_CELL_WIDTH + 1)
self.global_path_finder.register_entity_size(agent_cell_size)
path_with_cells = self.global_path_finder.run(agent_cell_size, agent_cell, target_cell)
if path_with_cells:
# Note: Cells are expressed in non-negative values (and need to be translated to game world coordinates)
path = [_translate_cell_to_world_position(cell, game_state.game_world.entire_world_area) for cell in
path_with_cells]
if DEBUG_RENDER_PATHFINDING:
_add_visual_lines_along_path(game_state, path)
self.path = path
else:
self.path = None
def control_npc(self, game_state: GameState, npc: NonPlayerCharacter,
player_entity: WorldEntity, _is_player_invisible: bool,
time_passed: Millis):
if npc.stun_status.is_stunned():
return
self._summon_trait.update(npc, game_state, time_passed)
self._random_walk_trait.update(npc, game_state, time_passed)
self._time_since_healing += time_passed
self._time_since_shoot += time_passed
if self._time_since_healing > self._healing_cooldown:
self._time_since_healing = 0
self._healing_cooldown = self._random_healing_cooldown()
necro_center_pos = npc.world_entity.get_center_position()
nearby_hurt_enemies = [
e for e in game_state.game_world.non_player_characters
if e.is_enemy and is_x_and_y_within_distance(
necro_center_pos, e.world_entity.get_center_position(),
200) and e != npc and not e.health_resource.is_at_max()
]
if nearby_hurt_enemies:
healing_target = nearby_hurt_enemies[0]
healing_target.health_resource.gain(5)
healing_target_pos = healing_target.world_entity.get_center_position(
)
visual_line = VisualLine((80, 200, 150), necro_center_pos,
healing_target_pos, Millis(350), 3)
game_state.game_world.visual_effects.append(visual_line)
play_sound(SoundId.ENEMY_NECROMANCER_HEAL)
if self._time_since_shoot > self._shoot_cooldown:
self._time_since_shoot = 0
self._shoot_cooldown = self._random_shoot_cooldown()
npc.world_entity.direction = get_directions_to_position(
npc.world_entity, player_entity.get_position())[0]
npc.world_entity.set_not_moving()
center_position = npc.world_entity.get_center_position()
distance_from_enemy = 35
projectile_pos = translate_in_direction(
get_position_from_center_position(center_position,
PROJECTILE_SIZE),
npc.world_entity.direction, distance_from_enemy)
projectile_speed = 0.2
projectile_entity = WorldEntity(projectile_pos, PROJECTILE_SIZE,
Sprite.NONE,
npc.world_entity.direction,
projectile_speed)
projectile = Projectile(
projectile_entity,
create_projectile_controller(PROJECTILE_TYPE))
game_state.game_world.projectile_entities.append(projectile)
play_sound(SoundId.ENEMY_ATTACK_NECRO)
def get_target(agent_entity: WorldEntity,
game_state: GameState) -> EnemyTarget:
# Enemies should prioritize attacking a summon over attacking the player
player_summons = [
npc for npc in game_state.game_world.non_player_characters
if npc.npc_category == NpcCategory.PLAYER_SUMMON
]
if player_summons:
player_summon = player_summons[0]
agent_position = agent_entity.get_position()
distance_to_npc_target = get_manhattan_distance(
player_summon.world_entity.get_position(), agent_position)
distance_to_player = get_manhattan_distance(
game_state.game_world.player_entity.get_position(), agent_position)
if distance_to_npc_target < distance_to_player:
return EnemyTarget.npc(player_summon.world_entity, player_summon)
return EnemyTarget.player(game_state.game_world.player_entity)
def control_npc(self, game_state: GameState, npc: NonPlayerCharacter,
player_entity: WorldEntity, is_player_invisible: bool,
time_passed: Millis):
if npc.stun_status.is_stunned():
return
super().control_npc(game_state, npc, player_entity,
is_player_invisible, time_passed)
self.sprint_cooldown_remaining -= time_passed
sprint_distance_limit = 250
if self.sprint_cooldown_remaining <= 0:
is_far_away = get_manhattan_distance(
npc.world_entity.get_position(),
player_entity.get_position()) > sprint_distance_limit
if is_far_away:
npc.gain_buff_effect(
get_buff_effect(BuffType.ENEMY_GOBLIN_SPEARMAN_SPRINT),
Millis(2500))
self.sprint_cooldown_remaining = self.random_cooldown()
def control_npc(self, game_state: GameState, npc: NonPlayerCharacter, player_entity: WorldEntity,
is_player_invisible: bool, time_passed: Millis):
if npc.stun_status.is_stunned():
return
super().control_npc(game_state, npc, player_entity, is_player_invisible, time_passed)
self._time_since_state_change += time_passed
if self._state == State.BASE:
if self._time_since_state_change > NpcMind.STATE_DURATION_BASE:
self._time_since_state_change -= NpcMind.STATE_DURATION_BASE
self._state = State.FIRING
npc.gain_buff_effect(get_buff_effect(BUFF_STUNNED),
Millis(NpcMind.STATE_DURATION_FIRING))
return
elif self._state == State.FIRING:
if self._time_since_state_change > NpcMind.STATE_DURATION_FIRING:
self._time_since_state_change -= NpcMind.STATE_DURATION_FIRING
self._state = State.BASE
return
self._time_since_fired += time_passed
if self._time_since_fired > NpcMind.FIRE_COOLDOWN:
self._time_since_fired -= NpcMind.FIRE_COOLDOWN
directions_to_player = get_directions_to_position(npc.world_entity, player_entity.get_position())
new_direction = directions_to_player[0]
if random.random() < 0.1 and directions_to_player[1] is not None:
new_direction = directions_to_player[1]
npc.world_entity.direction = new_direction
npc.world_entity.set_not_moving()
center_position = npc.world_entity.get_center_position()
distance_from_enemy = 35
projectile_pos = translate_in_direction(
get_position_from_center_position(center_position, PROJECTILE_SIZE),
npc.world_entity.direction, distance_from_enemy)
projectile_speed = 0.3
projectile_entity = WorldEntity(projectile_pos, PROJECTILE_SIZE, Sprite.NONE,
npc.world_entity.direction, projectile_speed)
projectile = Projectile(projectile_entity, create_projectile_controller(PROJECTILE_TYPE))
game_state.game_world.projectile_entities.append(projectile)
play_sound(SoundId.ENEMY_MAGIC_SKELETON_BOSS)
def _add_visual_line_to_next_waypoint(destination, agent_entity: WorldEntity, game_state: GameState):
start = _get_middle_of_cell_from_position(agent_entity.get_position())
end = _get_middle_of_cell_from_position(destination)
game_state.game_world.visual_effects.append(VisualLine((150, 150, 150), start, end, Millis(100), 2))
def does_entity_intersect_with_wall(self, entity: WorldEntity):
nearby_walls = self.get_walls_close_to_position(entity.get_position())
return any([
w for w in nearby_walls if boxes_intersect(w.rect(), entity.rect())
])
def serialize(entity: WorldEntity):
return PlayerJson.serialize_from_position(entity.get_position())
def handle_nearby_entities(self, player_entity: WorldEntity,
game_state: GameState, game_engine: GameEngine):
self.entity_to_interact_with = None
player_position = player_entity.get_position()
distance_to_closest_entity = sys.maxsize
for npc in game_state.game_world.non_player_characters:
if has_npc_dialog(npc.npc_type):
close_to_player = is_x_and_y_within_distance(
player_position, npc.world_entity.get_position(), 75)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), npc.world_entity.rect())
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = npc
distance_to_closest_entity = distance
lootables_on_ground: List[LootableOnGround] = list(
game_state.game_world.items_on_ground)
lootables_on_ground += game_state.game_world.consumables_on_ground
for lootable in lootables_on_ground:
if boxes_intersect(player_entity.rect(),
lootable.world_entity.rect()):
self.entity_to_interact_with = lootable
distance_to_closest_entity = 0
for portal in game_state.game_world.portals:
close_to_player = is_x_and_y_within_distance(
player_position, portal.world_entity.get_position(), 75)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), portal.world_entity.rect())
if close_to_player:
game_engine.handle_being_close_to_portal(portal)
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = portal
distance_to_closest_entity = distance
for warp_point in game_state.game_world.warp_points:
close_to_player = is_x_and_y_within_distance(
player_position, warp_point.world_entity.get_position(), 75)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), warp_point.world_entity.rect())
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = warp_point
distance_to_closest_entity = distance
for chest in game_state.game_world.chests:
close_to_player = is_x_and_y_within_distance(
player_position, chest.world_entity.get_position(), 75)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), chest.world_entity.rect())
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = chest
distance_to_closest_entity = distance
for shrine in game_state.game_world.shrines:
close_to_player = is_x_and_y_within_distance(
player_position, shrine.world_entity.get_position(), 75)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), shrine.world_entity.rect())
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = shrine
distance_to_closest_entity = distance
for dungeon_entrance in game_state.game_world.dungeon_entrances:
close_to_player = is_x_and_y_within_distance(
player_position, dungeon_entrance.world_entity.get_position(),
60)
distance = get_manhattan_distance_between_rects(
player_entity.rect(), dungeon_entrance.world_entity.rect())
if close_to_player and distance < distance_to_closest_entity:
self.entity_to_interact_with = dungeon_entrance
distance_to_closest_entity = distance
