946 lines
31 KiB
Python
946 lines
31 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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'''
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_______ ______ ______ __
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/ \ / \ / \ / |
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$$$$$$$ | __ __ /$$$$$$ | ______ ______ /$$$$$$ |_$$ |
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$$ |__$$ |/ | / |$$ | $$/ / \ / \ $$ |_ $$// $$ |
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$$ $$/ $$ | $$ |$$ | /$$$$$$ |$$$$$$ |$$ | $$$$$$/
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$$$$$$$/ $$ | $$ |$$ | __ $$ | $$/ / $$ |$$$$/ $$ |
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$$ | $$ \__$$ |$$ \__/ |$$ | /$$$$$$$ |$$ | $$ |/ |
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$$ | $$ $$ |$$ $$/ $$ | $$ $$ |$$ | $$ $$/
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$$/ $$$$$$$ | $$$$$$/ $$/ $$$$$$$/ $$/ $$$$/
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/ \__$$ |
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$$ $$/
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$$$$$$/
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Copyright (C) 2013 Michael Fogleman
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Copyright (C) 2018 Stefano Peris <xenon77.dev@gmail.com>
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Github repository: <https://github.com/XenonCoder/PyCraft>
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
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documentation files (the "Software"), to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions
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of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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'''
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from __future__ import division
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import sys
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import math
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import random
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import time
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from collections import deque
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from pyglet import image
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from pyglet.gl import *
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from pyglet.graphics import TextureGroup
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from pyglet.window import key, mouse
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TICKS_PER_SEC = 60
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# Size of sectors used to ease block loading.
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SECTOR_SIZE = 16
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WALKING_SPEED = 5
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FLYING_SPEED = 15
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GRAVITY = 20.0
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MAX_JUMP_HEIGHT = 1.0 # About the height of a block.
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# To derive the formula for calculating jump speed, first solve
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# v_t = v_0 + a * t
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# for the time at which you achieve maximum height, where a is the acceleration
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# due to gravity and v_t = 0. This gives:
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# t = - v_0 / a
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# Use t and the desired MAX_JUMP_HEIGHT to solve for v_0 (jump speed) in
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# s = s_0 + v_0 * t + (a * t^2) / 2
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JUMP_SPEED = math.sqrt(2 * GRAVITY * MAX_JUMP_HEIGHT)
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TERMINAL_VELOCITY = 50
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PLAYER_HEIGHT = 2
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if sys.version_info[0] >= 3:
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xrange = range
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def cube_vertices(x, y, z, n):
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""" Return the vertices of the cube at position x, y, z with size 2*n.
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"""
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return [
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x-n,y+n,z-n, x-n,y+n,z+n, x+n,y+n,z+n, x+n,y+n,z-n, # top
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x-n,y-n,z-n, x+n,y-n,z-n, x+n,y-n,z+n, x-n,y-n,z+n, # bottom
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x-n,y-n,z-n, x-n,y-n,z+n, x-n,y+n,z+n, x-n,y+n,z-n, # left
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x+n,y-n,z+n, x+n,y-n,z-n, x+n,y+n,z-n, x+n,y+n,z+n, # right
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x-n,y-n,z+n, x+n,y-n,z+n, x+n,y+n,z+n, x-n,y+n,z+n, # front
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x+n,y-n,z-n, x-n,y-n,z-n, x-n,y+n,z-n, x+n,y+n,z-n, # back
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]
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def tex_coord(x, y, n=4):
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""" Return the bounding vertices of the texture square.
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"""
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m = 1.0 / n
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dx = x * m
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dy = y * m
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return dx, dy, dx + m, dy, dx + m, dy + m, dx, dy + m
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def tex_coords(top, bottom, side):
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""" Return a list of the texture squares for the top, bottom and side.
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"""
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top = tex_coord(*top)
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bottom = tex_coord(*bottom)
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side = tex_coord(*side)
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result = []
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result.extend(top)
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result.extend(bottom)
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result.extend(side * 4)
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return result
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TEXTURE_PATH = 'img/textures.png'
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# top, bottom, side
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DIRT = tex_coords((0, 1), (0, 1), (0, 1))
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GRASS = tex_coords((1, 0), (0, 1), (0, 0))
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SAND = tex_coords((1, 1), (1, 1), (1, 1))
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BRICK = tex_coords((2, 0), (2, 0), (2, 0))
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BADSTONE = tex_coords((2, 1), (2, 1), (2, 1))
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TREE = tex_coords((1, 2), (1, 2), (0, 2))
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LEAVES = tex_coords((2, 2), (2, 2), (2, 2))
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SNOW = tex_coords((1, 3), (0, 1), (0, 3))
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WOODEN_PLANKS = tex_coords((2, 3), (2, 3), (2, 3))
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FACES = [
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( 0, 1, 0),
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( 0,-1, 0),
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(-1, 0, 0),
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( 1, 0, 0),
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( 0, 0, 1),
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( 0, 0,-1),
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]
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def normalize(position):
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""" Accepts `position` of arbitrary precision and returns the block
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containing that position.
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Parameters
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----------
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position : tuple of len 3
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Returns
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-------
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block_position : tuple of ints of len 3
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"""
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x, y, z = position
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x, y, z = (int(round(x)), int(round(y)), int(round(z)))
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return (x, y, z)
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def sectorize(position):
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""" Returns a tuple representing the sector for the given `position`.
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Parameters
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----------
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position : tuple of len 3
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Returns
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-------
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sector : tuple of len 3
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"""
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x, y, z = normalize(position)
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x, y, z = x // SECTOR_SIZE, y // SECTOR_SIZE, z // SECTOR_SIZE
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return (x, 0, z)
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class Model(object):
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def __init__(self):
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# A Batch is a collection of vertex lists for batched rendering.
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self.batch = pyglet.graphics.Batch()
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# A TextureGroup manages an OpenGL texture.
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self.group = TextureGroup(image.load(TEXTURE_PATH).get_texture())
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# A mapping from position to the texture of the block at that position.
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# This defines all the blocks that are currently in the world.
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self.world = {}
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# Same mapping as `world` but only contains blocks that are shown.
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self.shown = {}
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# Mapping from position to a pyglet `VertextList` for all shown blocks.
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self._shown = {}
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# Mapping from sector to a list of positions inside that sector.
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self.sectors = {}
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# Simple function queue implementation. The queue is populated with
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# _show_block() and _hide_block() calls
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self.queue = deque()
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self._initialize()
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def _initialize(self):
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""" Initialize the world by placing all the blocks.
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"""
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n = 80 # 1/2 width and height of world
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s = 1 # step size
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y = 0 # initial y height
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for x in xrange(-n, n + 1, s):
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for z in xrange(-n, n + 1, s):
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# create a layer BADSTONE an grass everywhere.
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self.add_block((x, y - 2, z), GRASS, immediate=False)
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self.add_block((x, y - 3, z), BADSTONE, immediate=False)
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if x in (-n, n) or z in (-n, n):
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# create outer walls.
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for dy in xrange(-2, 3):
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self.add_block((x, y + dy, z), BADSTONE, immediate=False)
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# generate the hills randomly
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o = n - 10
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for _ in xrange(120):
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a = random.randint(-o, o) # x position of the hill
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b = random.randint(-o, o) # z position of the hill
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c = -1 # base of the hill
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h = random.randint(1, 6) # height of the hill
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s = random.randint(4, 8) # 2 * s is the side length of the hill
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d = 1 # how quickly to taper off the hills
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t = random.choice([GRASS, SAND, BRICK])
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for y in xrange(c, c + h):
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for x in xrange(a - s, a + s + 1):
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for z in xrange(b - s, b + s + 1):
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if (x - a) ** 2 + (z - b) ** 2 > (s + 1) ** 2:
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continue
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if (x - 0) ** 2 + (z - 0) ** 2 < 5 ** 2:
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continue
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self.add_block((x, y, z), t, immediate=False)
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s -= d # decrement side lenth so hills taper off
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def hit_test(self, position, vector, max_distance=8):
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""" Line of sight search from current position. If a block is
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intersected it is returned, along with the block previously in the line
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of sight. If no block is found, return None, None.
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position to check visibility from.
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vector : tuple of len 3
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The line of sight vector.
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max_distance : int
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How many blocks away to search for a hit.
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"""
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m = 8
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x, y, z = position
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dx, dy, dz = vector
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previous = None
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for _ in xrange(max_distance * m):
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key = normalize((x, y, z))
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if key != previous and key in self.world:
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return key, previous
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previous = key
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x, y, z = x + dx / m, y + dy / m, z + dz / m
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return None, None
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def exposed(self, position):
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""" Returns False is given `position` is surrounded on all 6 sides by
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blocks, True otherwise.
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"""
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x, y, z = position
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for dx, dy, dz in FACES:
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if (x + dx, y + dy, z + dz) not in self.world:
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return True
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return False
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def add_block(self, position, texture, immediate=True):
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""" Add a block with the given `texture` and `position` to the world.
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position of the block to add.
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texture : list of len 3
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The coordinates of the texture squares. Use `tex_coords()` to
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generate.
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immediate : bool
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Whether or not to draw the block immediately.
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"""
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if position in self.world:
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self.remove_block(position, immediate)
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self.world[position] = texture
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self.sectors.setdefault(sectorize(position), []).append(position)
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if immediate:
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if self.exposed(position):
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self.show_block(position)
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self.check_neighbors(position)
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def remove_block(self, position, immediate=True):
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""" Remove the block at the given `position`.
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position of the block to remove.
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immediate : bool
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Whether or not to immediately remove block from canvas.
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"""
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del self.world[position]
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self.sectors[sectorize(position)].remove(position)
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if immediate:
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if position in self.shown:
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self.hide_block(position)
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self.check_neighbors(position)
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def check_neighbors(self, position):
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""" Check all blocks surrounding `position` and ensure their visual
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state is current. This means hiding blocks that are not exposed and
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ensuring that all exposed blocks are shown. Usually used after a block
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is added or removed.
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"""
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x, y, z = position
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for dx, dy, dz in FACES:
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key = (x + dx, y + dy, z + dz)
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if key not in self.world:
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continue
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if self.exposed(key):
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if key not in self.shown:
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self.show_block(key)
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else:
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if key in self.shown:
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self.hide_block(key)
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def show_block(self, position, immediate=True):
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""" Show the block at the given `position`. This method assumes the
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block has already been added with add_block()
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position of the block to show.
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immediate : bool
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Whether or not to show the block immediately.
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"""
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texture = self.world[position]
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self.shown[position] = texture
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if immediate:
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self._show_block(position, texture)
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else:
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self._enqueue(self._show_block, position, texture)
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def _show_block(self, position, texture):
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""" Private implementation of the `show_block()` method.
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position of the block to show.
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texture : list of len 3
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The coordinates of the texture squares. Use `tex_coords()` to
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generate.
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"""
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x, y, z = position
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vertex_data = cube_vertices(x, y, z, 0.5)
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texture_data = list(texture)
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# create vertex list
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# FIXME Maybe `add_indexed()` should be used instead
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self._shown[position] = self.batch.add(24, GL_QUADS, self.group,
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('v3f/static', vertex_data),
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('t2f/static', texture_data))
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def hide_block(self, position, immediate=True):
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""" Hide the block at the given `position`. Hiding does not remove the
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block from the world.
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Parameters
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----------
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position : tuple of len 3
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The (x, y, z) position of the block to hide.
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immediate : bool
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Whether or not to immediately remove the block from the canvas.
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"""
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self.shown.pop(position)
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if immediate:
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self._hide_block(position)
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else:
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self._enqueue(self._hide_block, position)
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def _hide_block(self, position):
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""" Private implementation of the 'hide_block()` method.
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"""
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self._shown.pop(position).delete()
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def show_sector(self, sector):
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""" Ensure all blocks in the given sector that should be shown are
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drawn to the canvas.
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"""
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for position in self.sectors.get(sector, []):
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if position not in self.shown and self.exposed(position):
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self.show_block(position, False)
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def hide_sector(self, sector):
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""" Ensure all blocks in the given sector that should be hidden are
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removed from the canvas.
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"""
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for position in self.sectors.get(sector, []):
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if position in self.shown:
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self.hide_block(position, False)
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def change_sectors(self, before, after):
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""" Move from sector `before` to sector `after`. A sector is a
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contiguous x, y sub-region of world. Sectors are used to speed up
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world rendering.
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"""
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before_set = set()
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after_set = set()
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pad = 4
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for dx in xrange(-pad, pad + 1):
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for dy in [0]: # xrange(-pad, pad + 1):
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for dz in xrange(-pad, pad + 1):
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if dx ** 2 + dy ** 2 + dz ** 2 > (pad + 1) ** 2:
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continue
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if before:
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x, y, z = before
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before_set.add((x + dx, y + dy, z + dz))
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if after:
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x, y, z = after
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after_set.add((x + dx, y + dy, z + dz))
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show = after_set - before_set
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hide = before_set - after_set
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for sector in show:
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self.show_sector(sector)
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for sector in hide:
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self.hide_sector(sector)
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def _enqueue(self, func, *args):
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""" Add `func` to the internal queue.
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"""
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self.queue.append((func, args))
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def _dequeue(self):
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""" Pop the top function from the internal queue and call it.
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"""
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func, args = self.queue.popleft()
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func(*args)
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def process_queue(self):
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""" Process the entire queue while taking periodic breaks. This allows
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the game loop to run smoothly. The queue contains calls to
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_show_block() and _hide_block() so this method should be called if
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add_block() or remove_block() was called with immediate=False
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"""
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start = time.clock()
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while self.queue and time.clock() - start < 1.0 / TICKS_PER_SEC:
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self._dequeue()
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def process_entire_queue(self):
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""" Process the entire queue with no breaks.
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"""
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while self.queue:
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self._dequeue()
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class Window(pyglet.window.Window):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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# Whether or not the window exclusively captures the mouse.
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self.exclusive = False
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# When flying gravity has no effect and speed is increased.
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self.flying = False
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# Strafing is moving lateral to the direction you are facing,
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# e.g. moving to the left or right while continuing to face forward.
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#
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# First element is -1 when moving forward, 1 when moving back, and 0
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# otherwise. The second element is -1 when moving left, 1 when moving
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# right, and 0 otherwise.
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self.strafe = [0, 0]
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# Current (x, y, z) position in the world, specified with floats. Note
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# that, perhaps unlike in math class, the y-axis is the vertical axis.
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self.position = (0, 0, 0)
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# First element is rotation of the player in the x-z plane (ground
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# plane) measured from the z-axis down. The second is the rotation
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# angle from the ground plane up. Rotation is in degrees.
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#
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# The vertical plane rotation ranges from -90 (looking straight down) to
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# 90 (looking straight up). The horizontal rotation range is unbounded.
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self.rotation = (0, 0)
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# Which sector the player is currently in.
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self.sector = None
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|
|
# The crosshairs at the center of the screen.
|
|
self.reticle = None
|
|
|
|
# Velocity in the y (upward) direction.
|
|
self.dy = 0
|
|
|
|
# A list of blocks the player can place. Hit num keys to cycle.
|
|
self.inventory = [DIRT, GRASS, SAND, SNOW, BRICK, TREE, LEAVES, WOODEN_PLANKS]
|
|
|
|
# The current block the user can place. Hit num keys to cycle.
|
|
self.block = self.inventory[0]
|
|
|
|
# Convenience list of num keys.
|
|
self.num_keys = [
|
|
key._1, key._2, key._3, key._4, key._5,
|
|
key._6, key._7, key._8, key._9, key._0]
|
|
|
|
# Instance of the model that handles the world.
|
|
self.model = Model()
|
|
|
|
# The label that is displayed in the top left of the canvas.
|
|
self.label = pyglet.text.Label('', font_name='Arial', font_size=18,
|
|
x=10, y=self.height - 10, anchor_x='left', anchor_y='top',
|
|
color=(0, 0, 0, 255))
|
|
|
|
# This call schedules the `update()` method to be called
|
|
# TICKS_PER_SEC. This is the main game event loop.
|
|
pyglet.clock.schedule_interval(self.update, 1.0 / TICKS_PER_SEC)
|
|
|
|
def set_exclusive_mouse(self, exclusive):
|
|
""" If `exclusive` is True, the game will capture the mouse, if False
|
|
the game will ignore the mouse.
|
|
|
|
"""
|
|
super(Window, self).set_exclusive_mouse(exclusive)
|
|
self.exclusive = exclusive
|
|
|
|
def get_sight_vector(self):
|
|
""" Returns the current line of sight vector indicating the direction
|
|
the player is looking.
|
|
|
|
"""
|
|
x, y = self.rotation
|
|
# y ranges from -90 to 90, or -pi/2 to pi/2, so m ranges from 0 to 1 and
|
|
# is 1 when looking ahead parallel to the ground and 0 when looking
|
|
# straight up or down.
|
|
m = math.cos(math.radians(y))
|
|
# dy ranges from -1 to 1 and is -1 when looking straight down and 1 when
|
|
# looking straight up.
|
|
dy = math.sin(math.radians(y))
|
|
dx = math.cos(math.radians(x - 90)) * m
|
|
dz = math.sin(math.radians(x - 90)) * m
|
|
return (dx, dy, dz)
|
|
|
|
def get_motion_vector(self):
|
|
""" Returns the current motion vector indicating the velocity of the
|
|
player.
|
|
|
|
Returns
|
|
-------
|
|
vector : tuple of len 3
|
|
Tuple containing the velocity in x, y, and z respectively.
|
|
|
|
"""
|
|
if any(self.strafe):
|
|
x, y = self.rotation
|
|
strafe = math.degrees(math.atan2(*self.strafe))
|
|
y_angle = math.radians(y)
|
|
x_angle = math.radians(x + strafe)
|
|
if self.flying:
|
|
m = math.cos(y_angle)
|
|
dy = math.sin(y_angle)
|
|
if self.strafe[1]:
|
|
# Moving left or right.
|
|
dy = 0.0
|
|
m = 1
|
|
if self.strafe[0] > 0:
|
|
# Moving backwards.
|
|
dy *= -1
|
|
# When you are flying up or down, you have less left and right
|
|
# motion.
|
|
dx = math.cos(x_angle) * m
|
|
dz = math.sin(x_angle) * m
|
|
else:
|
|
dy = 0.0
|
|
dx = math.cos(x_angle)
|
|
dz = math.sin(x_angle)
|
|
else:
|
|
dy = 0.0
|
|
dx = 0.0
|
|
dz = 0.0
|
|
return (dx, dy, dz)
|
|
|
|
def update(self, dt):
|
|
""" This method is scheduled to be called repeatedly by the pyglet
|
|
clock.
|
|
|
|
Parameters
|
|
----------
|
|
dt : float
|
|
The change in time since the last call.
|
|
|
|
"""
|
|
self.model.process_queue()
|
|
sector = sectorize(self.position)
|
|
if sector != self.sector:
|
|
self.model.change_sectors(self.sector, sector)
|
|
if self.sector is None:
|
|
self.model.process_entire_queue()
|
|
self.sector = sector
|
|
m = 8
|
|
dt = min(dt, 0.2)
|
|
for _ in xrange(m):
|
|
self._update(dt / m)
|
|
|
|
def _update(self, dt):
|
|
""" Private implementation of the `update()` method. This is where most
|
|
of the motion logic lives, along with gravity and collision detection.
|
|
|
|
Parameters
|
|
----------
|
|
dt : float
|
|
The change in time since the last call.
|
|
|
|
"""
|
|
# walking
|
|
speed = FLYING_SPEED if self.flying else WALKING_SPEED
|
|
d = dt * speed # distance covered this tick.
|
|
dx, dy, dz = self.get_motion_vector()
|
|
# New position in space, before accounting for gravity.
|
|
dx, dy, dz = dx * d, dy * d, dz * d
|
|
# gravity
|
|
if not self.flying:
|
|
# Update your vertical speed: if you are falling, speed up until you
|
|
# hit terminal velocity; if you are jumping, slow down until you
|
|
# start falling.
|
|
self.dy -= dt * GRAVITY
|
|
self.dy = max(self.dy, -TERMINAL_VELOCITY)
|
|
dy += self.dy * dt
|
|
# collisions
|
|
x, y, z = self.position
|
|
x, y, z = self.collide((x + dx, y + dy, z + dz), PLAYER_HEIGHT)
|
|
self.position = (x, y, z)
|
|
|
|
def collide(self, position, height):
|
|
""" Checks to see if the player at the given `position` and `height`
|
|
is colliding with any blocks in the world.
|
|
|
|
Parameters
|
|
----------
|
|
position : tuple of len 3
|
|
The (x, y, z) position to check for collisions at.
|
|
height : int or float
|
|
The height of the player.
|
|
|
|
Returns
|
|
-------
|
|
position : tuple of len 3
|
|
The new position of the player taking into account collisions.
|
|
|
|
"""
|
|
# How much overlap with a dimension of a surrounding block you need to
|
|
# have to count as a collision. If 0, touching terrain at all counts as
|
|
# a collision. If .49, you sink into the ground, as if walking through
|
|
# tall grass. If >= .5, you'll fall through the ground.
|
|
pad = 0.25
|
|
p = list(position)
|
|
np = normalize(position)
|
|
for face in FACES: # check all surrounding blocks
|
|
for i in xrange(3): # check each dimension independently
|
|
if not face[i]:
|
|
continue
|
|
# How much overlap you have with this dimension.
|
|
d = (p[i] - np[i]) * face[i]
|
|
if d < pad:
|
|
continue
|
|
for dy in xrange(height): # check each height
|
|
op = list(np)
|
|
op[1] -= dy
|
|
op[i] += face[i]
|
|
if tuple(op) not in self.model.world:
|
|
continue
|
|
p[i] -= (d - pad) * face[i]
|
|
if face == (0, -1, 0) or face == (0, 1, 0):
|
|
# You are colliding with the ground or ceiling, so stop
|
|
# falling / rising.
|
|
self.dy = 0
|
|
break
|
|
return tuple(p)
|
|
|
|
def on_mouse_press(self, x, y, button, modifiers):
|
|
""" Called when a mouse button is pressed. See pyglet docs for button
|
|
amd modifier mappings.
|
|
|
|
Parameters
|
|
----------
|
|
x, y : int
|
|
The coordinates of the mouse click. Always center of the screen if
|
|
the mouse is captured.
|
|
button : int
|
|
Number representing mouse button that was clicked. 1 = left button,
|
|
4 = right button.
|
|
modifiers : int
|
|
Number representing any modifying keys that were pressed when the
|
|
mouse button was clicked.
|
|
|
|
"""
|
|
if self.exclusive:
|
|
vector = self.get_sight_vector()
|
|
block, previous = self.model.hit_test(self.position, vector)
|
|
if (button == mouse.RIGHT) or \
|
|
((button == mouse.LEFT) and (modifiers & key.MOD_CTRL)):
|
|
# ON OSX, control + left click = right click.
|
|
if previous:
|
|
self.model.add_block(previous, self.block)
|
|
elif button == pyglet.window.mouse.LEFT and block:
|
|
texture = self.model.world[block]
|
|
if texture != BADSTONE:
|
|
self.model.remove_block(block)
|
|
else:
|
|
self.set_exclusive_mouse(True)
|
|
|
|
def on_mouse_motion(self, x, y, dx, dy):
|
|
""" Called when the player moves the mouse.
|
|
|
|
Parameters
|
|
----------
|
|
x, y : int
|
|
The coordinates of the mouse click. Always center of the screen if
|
|
the mouse is captured.
|
|
dx, dy : float
|
|
The movement of the mouse.
|
|
|
|
"""
|
|
if self.exclusive:
|
|
m = 0.15
|
|
x, y = self.rotation
|
|
x, y = x + dx * m, y + dy * m
|
|
y = max(-90, min(90, y))
|
|
self.rotation = (x, y)
|
|
|
|
def on_key_press(self, symbol, modifiers):
|
|
""" Called when the player presses a key. See pyglet docs for key
|
|
mappings.
|
|
|
|
Parameters
|
|
----------
|
|
symbol : int
|
|
Number representing the key that was pressed.
|
|
modifiers : int
|
|
Number representing any modifying keys that were pressed.
|
|
|
|
"""
|
|
if symbol == key.W:
|
|
self.strafe[0] -= 1
|
|
elif symbol == key.S:
|
|
self.strafe[0] += 1
|
|
elif symbol == key.A:
|
|
self.strafe[1] -= 1
|
|
elif symbol == key.D:
|
|
self.strafe[1] += 1
|
|
elif symbol == key.SPACE:
|
|
if self.dy == 0:
|
|
self.dy = JUMP_SPEED
|
|
elif symbol == key.ESCAPE:
|
|
self.set_exclusive_mouse(False)
|
|
elif symbol == key.TAB:
|
|
self.flying = not self.flying
|
|
elif symbol in self.num_keys:
|
|
index = (symbol - self.num_keys[0]) % len(self.inventory)
|
|
self.block = self.inventory[index]
|
|
|
|
def on_key_release(self, symbol, modifiers):
|
|
""" Called when the player releases a key. See pyglet docs for key
|
|
mappings.
|
|
|
|
Parameters
|
|
----------
|
|
symbol : int
|
|
Number representing the key that was pressed.
|
|
modifiers : int
|
|
Number representing any modifying keys that were pressed.
|
|
|
|
"""
|
|
if symbol == key.W:
|
|
self.strafe[0] += 1
|
|
elif symbol == key.S:
|
|
self.strafe[0] -= 1
|
|
elif symbol == key.A:
|
|
self.strafe[1] += 1
|
|
elif symbol == key.D:
|
|
self.strafe[1] -= 1
|
|
|
|
def on_resize(self, width, height):
|
|
""" Called when the window is resized to a new `width` and `height`.
|
|
|
|
"""
|
|
# label
|
|
self.label.y = height - 10
|
|
# reticle
|
|
if self.reticle:
|
|
self.reticle.delete()
|
|
x, y = self.width // 2, self.height // 2
|
|
n = 10
|
|
self.reticle = pyglet.graphics.vertex_list(4,
|
|
('v2i', (x - n, y, x + n, y, x, y - n, x, y + n))
|
|
)
|
|
|
|
def set_2d(self):
|
|
""" Configure OpenGL to draw in 2d.
|
|
|
|
"""
|
|
width, height = self.get_size()
|
|
glDisable(GL_DEPTH_TEST)
|
|
glViewport(0, 0, width, height)
|
|
glMatrixMode(GL_PROJECTION)
|
|
glLoadIdentity()
|
|
glOrtho(0, width, 0, height, -1, 1)
|
|
glMatrixMode(GL_MODELVIEW)
|
|
glLoadIdentity()
|
|
|
|
def set_3d(self):
|
|
""" Configure OpenGL to draw in 3d.
|
|
|
|
"""
|
|
width, height = self.get_size()
|
|
glEnable(GL_DEPTH_TEST)
|
|
glViewport(0, 0, width, height)
|
|
glMatrixMode(GL_PROJECTION)
|
|
glLoadIdentity()
|
|
gluPerspective(65.0, width / float(height), 0.1, 60.0)
|
|
glMatrixMode(GL_MODELVIEW)
|
|
glLoadIdentity()
|
|
x, y = self.rotation
|
|
glRotatef(x, 0, 1, 0)
|
|
glRotatef(-y, math.cos(math.radians(x)), 0, math.sin(math.radians(x)))
|
|
x, y, z = self.position
|
|
glTranslatef(-x, -y, -z)
|
|
|
|
def on_draw(self):
|
|
""" Called by pyglet to draw the canvas.
|
|
|
|
"""
|
|
self.clear()
|
|
self.set_3d()
|
|
glColor3d(1, 1, 1)
|
|
self.model.batch.draw()
|
|
self.draw_focused_block()
|
|
self.set_2d()
|
|
self.draw_label()
|
|
self.draw_reticle()
|
|
|
|
def draw_focused_block(self):
|
|
""" Draw black edges around the block that is currently under the
|
|
crosshairs.
|
|
|
|
"""
|
|
vector = self.get_sight_vector()
|
|
block = self.model.hit_test(self.position, vector)[0]
|
|
if block:
|
|
x, y, z = block
|
|
vertex_data = cube_vertices(x, y, z, 0.51)
|
|
glColor3d(0, 0, 0)
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
|
|
pyglet.graphics.draw(24, GL_QUADS, ('v3f/static', vertex_data))
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
|
|
|
|
def draw_label(self):
|
|
""" Draw the label in the top left of the screen.
|
|
|
|
"""
|
|
x, y, z = self.position
|
|
self.label.text = '%02d (%.2f, %.2f, %.2f) %d / %d' % (
|
|
pyglet.clock.get_fps(), x, y, z,
|
|
len(self.model._shown), len(self.model.world))
|
|
self.label.draw()
|
|
|
|
def draw_reticle(self):
|
|
""" Draw the crosshairs in the center of the screen.
|
|
|
|
"""
|
|
glColor3d(0, 0, 0)
|
|
self.reticle.draw(GL_LINES)
|
|
|
|
|
|
def setup_fog():
|
|
""" Configure the OpenGL fog properties.
|
|
|
|
"""
|
|
# Enable fog. Fog "blends a fog color with each rasterized pixel fragment's
|
|
# post-texturing color."
|
|
glEnable(GL_FOG)
|
|
# Set the fog color.
|
|
glFogfv(GL_FOG_COLOR, (GLfloat * 4)(0.5, 0.69, 1.0, 1))
|
|
# Say we have no preference between rendering speed and quality.
|
|
glHint(GL_FOG_HINT, GL_DONT_CARE)
|
|
# Specify the equation used to compute the blending factor.
|
|
glFogi(GL_FOG_MODE, GL_LINEAR)
|
|
# How close and far away fog starts and ends. The closer the start and end,
|
|
# the denser the fog in the fog range.
|
|
glFogf(GL_FOG_START, 20.0)
|
|
glFogf(GL_FOG_END, 60.0)
|
|
|
|
|
|
def setup():
|
|
""" Basic OpenGL configuration.
|
|
|
|
"""
|
|
# Set the color of "clear", i.e. the sky, in rgba.
|
|
glClearColor(0.5, 0.69, 1.0, 1)
|
|
# Enable culling (not rendering) of back-facing facets -- facets that aren't
|
|
# visible to you.
|
|
glEnable(GL_CULL_FACE)
|
|
# Set the texture minification/magnification function to GL_NEAREST (nearest
|
|
# in Manhattan distance) to the specified texture coordinates. GL_NEAREST
|
|
# "is generally faster than GL_LINEAR, but it can produce textured images
|
|
# with sharper edges because the transition between texture elements is not
|
|
# as smooth."
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
|
|
setup_fog()
|
|
|
|
|
|
def main():
|
|
window = Window(width=800, height=600, caption='PyCraft', resizable=True)
|
|
# Hide the mouse cursor and prevent the mouse from leaving the window.
|
|
window.set_exclusive_mouse(True)
|
|
setup()
|
|
pyglet.app.run()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|