1 | /* |
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2 | * ttyvaders Textmode shoot'em up |
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3 | * Copyright (c) 2002 Sam Hocevar <sam@zoy.org> |
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4 | * All Rights Reserved |
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5 | * |
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6 | * $Id: starfield.c 365 2004-02-17 13:53:14Z sam $ |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or modify |
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9 | * it under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; either version 2 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | */ |
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22 | |
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23 | #include "config.h" |
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24 | |
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25 | #include <stdlib.h> |
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26 | |
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27 | #include "common.h" |
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28 | |
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29 | starfield * create_starfield(game *g) |
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30 | { |
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31 | int i; |
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32 | starfield *s; |
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33 | |
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34 | s = malloc(STARS * sizeof(starfield)); |
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35 | if(s == NULL) |
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36 | exit(1); |
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37 | |
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38 | for(i = 0; i < STARS; i++) |
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39 | { |
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40 | s[i].x = caca_rand(0, g->w - 1); |
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41 | s[i].y = caca_rand(0, g->h - 1); |
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42 | s[i].z = caca_rand(1, 3); |
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43 | s[i].c = caca_rand(0, 1) ? CACA_COLOR_LIGHTGRAY : CACA_COLOR_DARKGRAY; |
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44 | s[i].ch = caca_rand(0, 1) ? '.' : '\''; |
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45 | } |
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46 | |
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47 | return s; |
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48 | } |
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49 | |
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50 | void draw_starfield(game *g, starfield *s) |
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51 | { |
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52 | int i; |
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53 | |
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54 | for(i = 0; i < STARS; i++) |
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55 | { |
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56 | if(s[i].x >= 0) |
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57 | { |
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58 | caca_set_color(s[i].c, CACA_COLOR_BLACK); |
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59 | caca_putchar(s[i].x, s[i].y, s[i].ch); |
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60 | } |
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61 | } |
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62 | } |
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63 | |
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64 | void update_starfield(game *g, starfield *s) |
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65 | { |
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66 | int i; |
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67 | |
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68 | for(i = 0; i < STARS; i++) |
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69 | { |
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70 | if(s[i].x < 0) |
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71 | { |
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72 | s[i].x = caca_rand(0, g->w - 1); |
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73 | s[i].y = 0; |
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74 | s[i].z = caca_rand(1, 2); |
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75 | s[i].c = caca_rand(0, 1) ? CACA_COLOR_LIGHTGRAY : CACA_COLOR_DARKGRAY; |
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76 | s[i].ch = caca_rand(0, 1) ? '.' : '\''; |
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77 | } |
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78 | else if(s[i].y < g->h-1) |
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79 | { |
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80 | s[i].y += s[i].z; |
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81 | } |
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82 | else |
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83 | { |
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84 | s[i].x = -1; |
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85 | } |
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86 | } |
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87 | } |
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88 | |
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89 | void free_starfield(game *g, starfield *s) |
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90 | { |
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91 | free(s); |
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92 | } |
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93 | |
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