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# -*- coding: utf-8 -*-
# characters.py - module for hero and enemy classes
# This file is part of brutalmaze
#
# brutalmaze is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# brutalmaze is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with brutalmaze. If not, see <http://www.gnu.org/licenses/>.
#
# Copyright (C) 2017 Nguyễn Gia Phong
__doc__ = 'brutalmaze module for hero and enemy classes'
from math import atan, atan2, sin, pi
from random import choice, randrange, shuffle
from sys import modules
import pygame
from pygame.time import get_ticks
from .constants import *
from .misc import sign, cosin, randsign, regpoly, fill_aapolygon, choices, play
from .weapons import Bullet
class Hero:
"""Object representing the hero.
Attributes:
surface (pygame.Surface): the display to draw on
x, y (int): coordinates of the center of the hero (in pixels)
angle (float): angle of the direction the hero pointing (in radians)
color (tuple of pygame.Color): colors of the hero on different HPs
R (int): circumradius of the regular triangle representing the hero
next_heal (int): the tick that the hero gains back healing ability
next_beat (int): the tick to play next heart beat
next_strike (int): the tick that the hero can do the next attack
slashing (bool): flag indicates if the hero is doing close-range attack
firing (bool): flag indicates if the hero is doing long-range attack
dead (bool): flag indicates if the hero is dead
spin_speed (float): speed of spinning (in frames per slash)
spin_queue (float): frames left to finish spinning
wound (float): amount of wound
sfx_heart (pygame.mixer.Sound): heart beat sound effect
"""
def __init__(self, surface, fps):
self.surface = surface
w, h = self.surface.get_width(), self.surface.get_height()
self.x, self.y = w >> 1, h >> 1
self.angle, self.color = pi / 4, TANGO['Aluminium']
self.R = (w * h / sin(pi*2/3) / 624) ** 0.5
self.next_heal = self.next_beat = self.next_strike = 0
self.slashing = self.firing = self.dead = False
self.spin_speed = fps / HERO_HP
self.spin_queue = self.wound = 0.0
self.sfx_heart = SFX_HEART
def update(self, fps):
"""Update the hero."""
if self.dead:
self.spin_queue = 0.0
return
old_speed, time = self.spin_speed, get_ticks()
self.spin_speed = fps / (HERO_HP-self.wound**0.5)
self.spin_queue *= self.spin_speed / old_speed
if time > self.next_heal:
self.wound -= HEAL_SPEED / self.spin_speed / HERO_HP
if self.wound < 0: self.wound = 0.0
if time > self.next_beat:
play(self.sfx_heart)
self.next_beat = time + MIN_BEAT*(2 - self.wound/HERO_HP)
if self.slashing and time >= self.next_strike:
self.next_strike = time + ATTACK_SPEED
self.spin_queue = randsign() * self.spin_speed
if abs(self.spin_queue) > 0.5:
self.angle += sign(self.spin_queue) * pi / 2 / self.spin_speed
self.spin_queue -= sign(self.spin_queue)
def update_angle(self, angle):
"""Turn to the given angle if the hero is not busy slashing."""
if abs(self.spin_queue) <= 0.5:
self.spin_queue = 0.0
self.angle = angle
def draw(self):
"""Draw the hero."""
trigon = regpoly(3, self.R, self.angle, self.x, self.y)
fill_aapolygon(self.surface, trigon, self.color[int(self.wound)])
def resize(self):
"""Resize the hero."""
w, h = self.surface.get_width(), self.surface.get_height()
self.x, self.y = w >> 1, h >> 1
self.R = (w * h / sin(pi*2/3) / 624) ** 0.5
class Enemy:
"""Object representing an enemy.
Attributes:
maze (Maze): the maze
x, y (int): coordinates of the center of the enemy (in grids)
angle (float): angle of the direction the enemy pointing (in radians)
color (str): enemy's color name
awake (bool): flag indicates if the enemy is active
next_strike (int): the tick that the enemy can do the next attack
move_speed (float): speed of movement (in frames per grid)
offsetx, offsety (integer): steps moved from the center of the grid
spin_speed (float): speed of spinning (in frames per slash)
spin_queue (float): frames left to finish spinning
wound (float): amount of wound
sfx_slash (pygame.mixer.Sound): sound effect of slashed hero
"""
def __init__(self, maze, x, y, color):
self.maze = maze
self.x, self.y = x, y
self.maze.map[x][y] = ENEMY
self.angle, self.color = pi / 4, color
self.awake = False
self.next_strike = 0
self.move_speed = self.maze.fps / ENEMY_SPEED
self.offsetx = self.offsety = 0
self.spin_speed = self.maze.fps / ENEMY_HP
self.spin_queue = self.wound = 0.0
self.sfx_slash = SFX_SLASH_HERO
def get_pos(self):
"""Return coordinate of the center of the enemy."""
x, y = self.maze.get_pos(self.x, self.y)
step = self.maze.distance * ENEMY_SPEED / self.maze.fps
return x + self.offsetx*step, y + self.offsety*step
def get_distance(self):
"""Return the distance from the center of the enemy to
the center of the maze.
"""
return self.maze.get_distance(*self.get_pos())
def place(self, x=0, y=0):
"""Move the enemy by (x, y) (in grids)."""
self.x += x
self.y += y
self.maze.map[self.x][self.y] = ENEMY
def wake(self):
"""Wake the enemy up if it can see the hero.
Return None if the enemy is already awake, True if the function
has just woken it, False otherwise.
"""
if self.awake: return None
startx = starty = MIDDLE
stopx, stopy, distance = self.x, self.y, self.maze.distance
if startx > stopx: startx, stopx = stopx, startx
if starty > stopy: starty, stopy = stopy, starty
dx = (self.x-MIDDLE)*distance + self.maze.centerx - self.maze.x
dy = (self.y-MIDDLE)*distance + self.maze.centery - self.maze.y
mind = cosin(abs(atan(dy / dx)) if dx else 0) * distance
def get_distance(x, y): return abs(dy*x - dx*y) / (dy**2 + dx**2)**0.5
for i in range(startx, stopx + 1):
for j in range(starty, stopy + 1):
if self.maze.map[i][j] != WALL: continue
x, y = self.maze.get_pos(i, j)
if get_distance(x - self.maze.x, y - self.maze.y) <= mind:
return False
self.awake = True
play(self.maze.sfx_spawn,
1 - self.get_distance()/self.maze.get_distance(0, 0)/2,
self.get_angle() + pi)
return True
def fire(self):
"""Return True if the enemy has just fired, False otherwise."""
if self.maze.hero.dead: return False
x, y = self.get_pos()
if (self.maze.get_distance(x, y) > FIRANGE*self.maze.distance
or get_ticks() < self.next_strike
or (self.x, self.y) in AROUND_HERO or self.offsetx or self.offsety
or randrange((self.maze.hero.slashing+self.maze.isfast()+1) * 3)):
return False
self.next_strike = get_ticks() + ATTACK_SPEED
self.maze.bullets.append(
Bullet(self.maze.surface, x, y, self.get_angle() + pi, self.color))
return True
def move(self, speed=ENEMY_SPEED):
"""Return True if it has just moved, False otherwise."""
if self.offsetx:
self.offsetx -= sign(self.offsetx)
return True
if self.offsety:
self.offsety -= sign(self.offsety)
return True
if get_ticks() < self.next_strike: return False
self.move_speed = self.maze.fps / speed
directions = [(sign(MIDDLE - self.x), 0), (0, sign(MIDDLE - self.y))]
shuffle(directions)
directions.append(choice(ADJACENT_GRIDS))
if self.maze.hero.dead: directions = choice(ADJACENT_GRIDS),
for x, y in directions:
if (x or y) and self.maze.map[self.x + x][self.y + y] == EMPTY:
self.offsetx = round(x * (1 - self.move_speed))
self.offsety = round(y * (1 - self.move_speed))
self.maze.map[self.x][self.y] = EMPTY
self.place(x, y)
return True
return False
def get_slash(self):
"""Return the enemy's close-range damage."""
wound = (self.maze.slashd - self.get_distance()) / self.maze.hero.R
return wound if wound > 0 else 0.0
def slash(self):
"""Return the enemy's close-range damage per frame."""
wound = self.get_slash() / self.spin_speed
if self.spin_queue: self.maze.hit_hero(wound, self.color)
return wound
def get_angle(self, reversed=False):
"""Return the angle of the vector whose initial point is
the center of the screen and terminal point is the center of
the enemy.
"""
x, y = self.get_pos()
return atan2(y - self.maze.y, x - self.maze.x)
def get_color(self):
"""Return current color of the enemy."""
return TANGO[self.color][int(self.wound)] if self.awake else FG_COLOR
def draw(self):
"""Draw the enemy."""
if get_ticks() < self.maze.next_move and not self.awake: return
radious = self.maze.distance/SQRT2 - self.awake*2
square = regpoly(4, radious, self.angle, *self.get_pos())
fill_aapolygon(self.maze.surface, square, self.get_color())
def update(self):
"""Update the enemy."""
if self.awake:
self.spin_speed, tmp = self.maze.fps / ENEMY_HP, self.spin_speed
self.spin_queue *= self.spin_speed / tmp
if not self.spin_queue and not self.fire() and not self.move():
self.spin_queue = randsign() * self.spin_speed
if not self.maze.hero.dead:
play(self.sfx_slash, self.get_slash(), self.get_angle())
if abs(self.spin_queue) > 0.5:
self.angle += sign(self.spin_queue) * pi / 2 / self.spin_speed
self.spin_queue -= sign(self.spin_queue)
else:
self.angle, self.spin_queue = pi / 4, 0.0
def hit(self, wound):
"""Handle the enemy when it's attacked."""
self.wound += wound
def die(self):
"""Handle the enemy's death."""
if self.awake:
self.maze.map[self.x][self.y] = EMPTY
if self.maze.enemy_weights[self.color] > MINW + 1.5:
self.maze.enemy_weights[self.color] -= 1.5
else:
self.maze.map[self.x][self.y] = WALL
class Chameleon(Enemy):
"""Object representing an enemy of Chameleon.
Additional attributes:
visible (int): the tick until which the Chameleon is visible
"""
def __init__(self, maze, x, y):
Enemy.__init__(self, maze, x, y, 'Chameleon')
self.visible = 0
def wake(self):
"""Wake the Chameleon up if it can see the hero."""
if Enemy.wake(self) is True:
self.visible = get_ticks() + 1000//ENEMY_SPEED
def draw(self):
"""Draw the Chameleon."""
if not self.awake or get_ticks() < self.visible or self.spin_queue:
Enemy.draw(self)
def hit(self, wound):
"""Handle the Chameleon when it's attacked."""
self.visible = get_ticks() + 1000//ENEMY_SPEED
Enemy.hit(self, wound)
class Plum(Enemy):
"""Object representing an enemy of Plum."""
def __init__(self, maze, x, y):
Enemy.__init__(self, maze, x, y, 'Plum')
def clone(self, other):
"""Turn the other enemy into a clone of this Plum and return
True if that enemy is also a Plum, otherwise return False.
"""
if other.color != 'Plum': return False
other.x, other.y, other.angle = self.x, self.y, self.angle
other.awake, other.next_strike = True, self.next_strike
other.offsetx, other.offsety = self.offsetx, self.offsety
other.spin_queue, other.wound = self.spin_queue, self.wound
return True
class ScarletRed(Enemy):
"""Object representing an enemy of Scarlet Red."""
def __init__(self, maze, x, y):
Enemy.__init__(self, maze, x, y, 'ScarletRed')
def fire(self):
"""Scarlet Red doesn't shoot."""
return False
def move(self):
return Enemy.move(self, ENEMY_SPEED * SQRT2)
def slash(self):
"""Handle the Scarlet Red's close-range attack."""
self.wound -= Enemy.slash(self)
if self.wound < 0: self.wound = 0.0
def new_enemy(maze, x, y):
"""Return an enemy of a random type in the grid (x, y)."""
color = choices(maze.enemy_weights)
try:
return getattr(modules[__name__], color)(maze, x, y)
except AttributeError:
return Enemy(maze, x, y, color)
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