game.h

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007 Thomas Perl <thp@perli.net>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  20  * MA  02110-1301, USA.
  21  *
  22  **/
  23
  24 #ifndef __GAME_H
  25 #define __GAME_H
  26
  27 #include <math.h>
  28 #include "tennix.h"
  29
  30 #define SETS_TO_WIN 3
  31
  32 typedef unsigned char bool;
  33 enum {
  34     false,
  35     true
  36 };
  37
  38 enum {
  39     REFEREE_NORMAL,
  40     REFEREE_PLAYER1,
  41     REFEREE_OUT,
  42     REFEREE_PLAYER2
  43 };
  44
  45 enum {
  46     WINNER_NONE,
  47     WINNER_PLAYER1,
  48     WINNER_PLAYER2
  49 };
  50
  51 typedef struct {
  52     float x;
  53     float y;
  54     float move_x;
  55     float move_y;
  56     float jump;
  57 } Ball;
  58
  59 typedef struct {
  60     float x;
  61     float y;
  62     unsigned char state;
  63     unsigned int score;
  64     bool responsible; /* responsible for the next fault (if any) */
  65     unsigned char desire; /* what the player aims to do (0=normal, 1=upper edge, 2=lower edge)*/
  66     bool type; /* is this player ai-controlled or human? */
  67     float ball_dest; /* prospective y-position of ball */
  68     bool state_locked; /* enabled when user keeps pressing the "hit" key */
  69     int game; /* score for the current game */
  70     int sets[SETS_TO_WIN*2]; /* score for each set */
  71 } Player;
  72
  73 enum {
  74     PLAYER_TYPE_HUMAN,
  75     PLAYER_TYPE_AI,
  76 };
  77
  78 enum {
  79     DESIRE_NORMAL,
  80     DESIRE_MAX
  81 };
  82
  83 typedef struct {
  84     Ball ball;
  85     Ball ground;
  86     Player player1;
  87     Player player2;
  88     float phase;
  89     unsigned int time;
  90     bool was_stopped;
  91     bool player1_serves;
  92     char* status;
  93     char game_score_str[50];
  94     char sets_score_str[50];
  95     unsigned char referee;
  96     unsigned int current_set;
  97     int winner;
  98     bool is_over;
  99     unsigned int court_type;
 100 } GameState;
 101
 102 #define PI 3.1415
 103
 104 #define GAME_TICKS 15
 105
 106 #define GROUND_PHASE 0.4
 107 #define PHASE_AMP 3.2
 108
 109 #define BALL_JUMP_MIN 4
 110 #define BALL_JUMP_MAX 10
 111 #define BALL_DEFAULT_SPEED 3.0
 112
 113 #define RACKET_X_MID 15
 114 #define RACKET_Y_MID 24
 115
 116 #define BALL_X_MID 9
 117 #define BALL_Y_MID 9
 118
 119 #define GAME_X_MIN 41.0*2
 120 #define GAME_X_MAX 270.0*2
 121 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 122
 123 #define GAME_Y_MIN 155.0
 124 #define GAME_Y_MAX 330.0
 125 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 126
 127 #define GAME_EDGE_AREA 20.0
 128 #define GAME_EDGE_UPPER GAME_Y_MIN+GAME_EDGE_AREA
 129 #define GAME_EDGE_LOWER GAME_Y_MAX-GAME_EDGE_AREA
 130
 131 #define PLAYER_Y_MIN 0.0
 132 #define PLAYER_Y_MAX 1.0*HEIGHT
 133
 134 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 135 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 136 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 137 #define IS_OUT_Y(y) (y<GAME_Y_MIN || y>GAME_Y_MAX)
 138 #define IS_OUT_X(x) (x<GAME_X_MIN || x>GAME_X_MAX)
 139
 140 #define PLAYER_AREA_Y RACKET_Y_MID
 141 #define PLAYER_AREA_X RACKET_X_MID
 142 #define IS_NEAR_Y(py,by) (fabsf(py-by)<PLAYER_AREA_Y)
 143 #define IS_NEAR_Y_AI(py,by) (fabsf(py-by)<PLAYER_AREA_Y/2.5)
 144 #define IS_NEAR_X(px,bx) (fabsf(px-bx)<PLAYER_AREA_X)
 145 #define IS_NEAR_X_AI(px,bx) (fabsf(px-bx)<PLAYER_AREA_X*2)
 146
 147 #define PLAYER_STATE_MAX 7
 148 #define PLAYER_POWERSHOT 6.2
 149
 150 #define MOVE_Y_SEED 3
 151
 152 void game( bool);
 153 void render( GameState*);
 154 bool step( GameState*);
 155 void limit_value( float*, float, float);
 156 float get_phase( GameState*);
 157 float get_move_y( GameState*, unsigned char);
 158 void input_human( Player*, bool, bool, bool);
 159 void input_ai( Player*, Ball*, Player*);
 160 void game_setup_serve( GameState*);
 161
 162 void score_game( GameState*, bool);
 163 char* format_sets( GameState*);
 164 char* format_game( GameState*);
 165 char* format_status( GameState*);
 166 int game_get_winner( GameState*);
 167
 168 #endif
 169