Mercurial > atc
annotate atc_plane.py @ 13:4a95c5552d3b
Stall speed and normal rate of climb adjustment
committer: Jeff Sipek <jeffpc@jeff.(none)> 1120872321 -0400
| author | Jeff Sipek <jeffpc@jeff.(none)> |
|---|---|
| date | Sat, 09 Jul 2005 01:25:21 -0400 |
| parents | 243941ec0a36 |
| children | d9c394a5ef77 |
| rev | line source |
|---|---|
| 6 | 1 #/* |
| 2 # * ATC - Air Traffic Controller simulation game | |
| 3 # * | |
|
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4 # * Copyright (C) 2004, 2005 Josef "Jeff" Sipek <jeffpc@optonline.net> |
| 6 | 5 # * |
| 6 # * This program is free software; you can redistribute it and/or modify | |
| 7 # * it under the terms of the GNU General Public License as published by | |
| 8 # * the Free Software Foundation; either version 2 of the License, or | |
| 9 # * (at your option) any later version. | |
| 10 # * | |
| 11 # * This program is distributed in the hope that it will be useful, | |
| 12 # * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 # * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 # * GNU General Public License for more details. | |
| 15 # * | |
| 16 # * You should have received a copy of the GNU General Public License | |
| 17 # * along with this program; if not, write to the Free Software | |
| 18 # * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 # * | |
| 20 # * @(#) %M% %I% %E% %U% | |
| 21 # */ | |
| 22 | |
| 0 | 23 import os |
| 24 import sys | |
|
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25 import time |
| 0 | 26 import pygame |
| 27 from math import * | |
| 28 | |
| 29 import atc_colors | |
| 30 import atc_utils | |
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31 from atc_plane_specs import * |
| 0 | 32 |
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33 mperpix = 30000.0/800.0 # 800 px == 30 km |
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34 mperdeg = 1852.0*60.0 # == 1852 m/min * 60 min/deg |
| 0 | 35 |
| 36 def m2pix(m): | |
| 37 """ Meters to pixels conversion fn """ | |
| 38 return m/mperpix | |
| 39 | |
| 40 def pix2m(pix): | |
| 41 """ Pixels to meters conversion fn """ | |
| 42 return pix*mperpix | |
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43 |
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44 def pix2geo(pix): |
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45 return pix2m(pix)/mperdeg |
| 0 | 46 |
| 47 plane_OK = 0 | |
| 48 plane_RANGE = 1 | |
| 49 plane_CRASHED = 2 | |
| 50 plane_STALL = 3 | |
| 51 plane_DEAD = 4 | |
| 52 plane_PROXY = 5 | |
| 53 | |
| 54 class Plane(pygame.sprite.Sprite): | |
| 55 """ Class to manage one plane's motion """ | |
| 8 | 56 def __init__(self,callsign,flightno,pos=(0.0, 0.0, 0.0),vel=(0.0, 0.0, 0.0)): |
| 0 | 57 """ Set up everything """ |
| 58 pygame.sprite.Sprite.__init__(self) | |
| 59 | |
| 60 # screen | |
| 61 screen = pygame.display.get_surface() | |
| 62 self.area = screen.get_rect() | |
| 63 | |
| 64 # plane image | |
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65 (self.image, self.rect) = atc_utils.load_png('data/image/plane.png') |
| 0 | 66 |
| 67 # call sign | |
| 68 self.callsign = callsign | |
| 69 | |
| 8 | 70 # flight number |
| 71 self.flightno = flightno | |
| 72 | |
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73 # position (X, Y, Z) |
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74 self.pos = { \ |
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75 "X":pos[0], \ |
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76 "Y":pos[1], \ |
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77 "Z":pos[2]} |
| 0 | 78 |
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79 # target position |
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80 self.targetPos = { \ |
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81 "X":None, \ |
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82 "Y":None, \ |
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83 "Z":None} |
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84 |
| 0 | 85 # velocity |
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86 self.vel = { \ |
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87 "i":vel[0], \ |
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88 "j":vel[1], \ |
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89 "k":vel[2], \ |
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90 |
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91 "heading":0, \ |
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92 "speed":0, \ |
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93 "climb":0} |
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94 self.complete_vel(ijk=1) |
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95 |
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96 self.timer = 0 # this is timeout the next time we try to recalculate position |
| 0 | 97 |
| 98 # plane specs | |
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99 self.specs = plane_SPECS[0] # default to a simple prop plane, FIXME: add param to override |
| 0 | 100 |
| 101 # status flag | |
| 102 self.status = plane_OK | |
| 103 | |
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104 def complete_vel(self, ijk=None, hac=None): |
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105 """ Recalculate all the velocity variables """ |
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106 if ijk == None and hac == None: |
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107 print "Nothing calculated" |
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108 return |
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109 |
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110 if ijk == None: |
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111 self.vel["i"] = sin(self.vel["heading"]) * sqrt(self.vel["speed"]**2 - self.vel["climb"]**2) |
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112 self.vel["j"] = cos(self.vel["heading"]) * sqrt(self.vel["speed"]**2 - self.vel["climb"]**2) |
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113 self.vel["k"] = self.vel["climb"] |
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114 else: |
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115 self.vel["heading"] = self.calc_head() |
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116 self.vel["speed"] = sqrt(self.vel["i"]**2 + self.vel["j"]**2 + self.vel["k"]**2) |
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117 self.vel["climb"] = self.vel["k"] |
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118 |
| 0 | 119 def update(self): |
| 120 """ Move the plane, and check for collisions """ | |
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121 if (self.timer > time.time()): |
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122 return |
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123 |
| 0 | 124 if (self.status != plane_OK): |
| 125 return | |
| 126 | |
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127 self.pos["X"] += self.vel["i"]/10.0 |
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128 self.pos["Y"] += self.vel["j"]/10.0 |
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129 self.pos["Z"] += self.vel["k"]/10.0 |
| 0 | 130 |
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131 # FIXME: need physics |
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132 if (self.targetPos["Z"] != None) and (self.pos["Z"] >= (self.targetPos["Z"] - 25)) and (self.pos["Z"] <= (self.targetPos["Z"] + 25)): |
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133 self.vel["k"] = 0 |
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134 self.targetPos["Z"] = None |
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135 |
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136 self.complete_vel(ijk=1) |
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137 |
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138 #if (self.pos["X"] < 0) or (self.pos["Y"] < 0): # FIXME: max values |
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139 # self.status = plane_RANGE |
| 0 | 140 |
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141 if (self.pos["Z"] < 0): |
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142 self.vel["i"] = self.vel["j"] = self.vel["k"] = 0 |
| 0 | 143 self.status = plane_CRASHED |
| 144 | |
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145 if (self.vel["speed"]<m2pix(self.specs["stall_speed"])) and (not self.status==plane_CRASHED): |
| 0 | 146 self.status = plane_STALL |
| 147 | |
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148 self.rect.move(m2pix(self.vel["i"])/10.0,m2pix(self.vel["j"])/10.0) |
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149 |
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150 self.timer = time.time() + m2pix(self.vel["speed"])**-1/10.0 |
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151 |
| 0 | 152 def calc_head(self): |
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153 """ Calculate heading of the airplane (in radians)""" |
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154 if (self.vel["i"] == self.vel["j"] == 0): # no movement |
| 0 | 155 return 0 |
| 156 | |
| 157 try: | |
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158 head = fabs(atan(self.vel["i"]/-self.vel["j"])) |
| 0 | 159 except ZeroDivisionError: |
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160 if (self.vel["i"]>0): |
| 0 | 161 return pi/2 # east |
| 162 return 3*pi/2 # west | |
| 163 | |
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164 return head |
| 0 | 165 |
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166 def calc_geo(self, xy, prefix): |
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167 """ Return a geographic coodrinate-formated xy """ |
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168 df = m2pix(pix2geo(xy)) |
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169 minus = prefix[0] |
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170 if df<0: |
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171 df *= -1 |
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172 minus = prefix[1] |
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173 d = floor(df) |
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174 mf = (df-d) * 60.0 |
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175 m = floor(mf) |
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176 s = (mf-m) * 60.0 |
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177 |
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178 return "%s %dd %02dm %02ds" % (minus, int(d), int(m), int(s)) |
| 0 | 179 |
| 8 | 180 def process(self,cmd): |
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181 """ Process a user command """ |
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182 |
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183 # FIXME: convert multiple spaces to single |
| 8 | 184 parts = cmd.split(' ') |
| 185 | |
| 186 if (parts[0] == "ALT"): | |
| 187 print "Changing altitude to " + parts[1] + "m" | |
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188 self.targetPos["Z"] = int(parts[1]) |
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189 self.vel["k"] = self.specs["climb_normal"] |
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190 if (self.pos["Z"] > self.targetPos["Z"]): |
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191 self.vel["k"] *= -1 |
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192 self.complete_vel(ijk=1) |
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193 |
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194 if (parts[0] == "HEAD"): |
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195 self.vel["heading"] = int(parts[1]) |
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196 while(True): |
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197 if self.vel["heading"]>=360: |
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198 self.vel["heading"] -= 360 |
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199 elif self.vel["heading"]<0: |
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200 self.vel["heading"] += 360 |
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201 else: |
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202 break |
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203 |
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204 print "Changing heading to " + str(self.vel["heading"]) |
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205 self.vel["heading"] *= pi/180.0 |
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206 self.complete_vel(hac=1) |
| 8 | 207 |
| 0 | 208 def display(self,screen): |
| 209 """ Put everything onto the screen """ | |
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210 screen.blit(self.image, (int(1024/2+m2pix(self.pos["X"])), int(768/2-m2pix(self.pos["Y"])))) |
| 0 | 211 |
| 212 # Plane info | |
| 213 font = pygame.font.Font(None, 16) | |
| 214 | |
| 215 color = atc_colors.planeinfo_ok | |
| 216 if (self.status == plane_CRASHED) or (self.status == plane_DEAD): | |
| 217 color = atc_colors.planeinfo_crashed | |
| 218 | |
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219 x = int(1024/2+m2pix(self.pos["X"])) + 10 |
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220 y = int(768/2-m2pix(self.pos["Y"])) - 5 |
| 0 | 221 |
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222 # FIXME: display geographic coordinates with NSWE appended/prepended |
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223 #strings = ( self.flightno, |
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224 # self.callsign + " " + str(self.status), |
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225 # "Alt: " + str(int(self.pos["Z"])), |
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226 # "Lat: " + self.calc_geo(self.pos["Y"],"NS"), |
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227 # "Long: " + self.calc_geo(self.pos["X"],"EW"), |
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228 # "Head: " + str(int(atc_utils.todeg(self.vel["heading"]))), |
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229 # "AS: " + str(int(self.vel["speed"]*3.6))) |
| 8 | 230 strings = ( self.flightno, |
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231 "%03d %03d" % (int(atc_utils.todeg(self.vel["heading"])), int(self.vel["speed"]*3.6)), |
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232 self.specs["name"]) |
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233 |
| 0 | 234 for stri in strings: |
| 235 alt = font.render(stri, 1, color) | |
| 236 altpos = alt.get_rect() | |
| 237 altpos.topleft = (x,y) | |
| 238 screen.blit(alt, altpos) | |
| 239 (x,y) = (x,y+10) |