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 #define NGRAM_STEPS 6
  33
  34 typedef unsigned char bool;
  35 enum {
  36     false,
  37     true
  38 };
  39
  40 enum {
  41     REFEREE_NORMAL,
  42     REFEREE_PLAYER1,
  43     REFEREE_OUT,
  44     REFEREE_PLAYER2
  45 };
  46
  47 enum {
  48     WINNER_NONE,
  49     WINNER_PLAYER1,
  50     WINNER_PLAYER2
  51 };
  52
  53 typedef struct {
  54     float x;
  55     float y;
  56     float move_x;
  57     float move_y;
  58     float jump;
  59 } Ball;
  60
  61 typedef struct {
  62     float x;
  63     float y;
  64     unsigned char state;
  65     unsigned int score;
  66     bool responsible; /* responsible for the next fault (if any) */
  67     unsigned char desire; /* what the player aims to do (0=normal, 1=upper edge, 2=lower edge)*/
  68     bool type; /* is this player ai-controlled or human? */
  69     float ball_dest; /* prospective y-position of ball */
  70     bool state_locked; /* enabled when user keeps pressing the "hit" key */
  71     int game; /* score for the current game */
  72     int sets[SETS_TO_WIN*2]; /* score for each set */
  73 } Player;
  74
  75 enum {
  76     PLAYER_TYPE_HUMAN,
  77     PLAYER_TYPE_AI,
  78 };
  79
  80 enum {
  81     DESIRE_NORMAL,
  82     DESIRE_MAX
  83 };
  84
  85 typedef struct {
  86     Ball ball;
  87     Ball ground;
  88     Player player1;
  89     Player player2;
  90     float phase;
  91     unsigned int time;
  92     bool was_stopped;
  93     bool player1_serves;
  94     char* status;
  95     char game_score_str[50];
  96     char sets_score_str[50];
  97     unsigned char referee;
  98     unsigned int current_set;
  99     int winner;
 100     bool is_over;
 101     unsigned int court_type;
 102     unsigned int history[3];
 103     unsigned int history_size;
 104     bool history_is_locked;
 105     unsigned char ngram[NGRAM_STEPS][NGRAM_STEPS][NGRAM_STEPS];
 106     float ngram_prediction;
 107 } GameState;
 108
 109 #define PI 3.1415
 110
 111 #define GAME_TICKS 15
 112
 113 #define GROUND_PHASE 0.4
 114 #define PHASE_AMP 3.2
 115
 116 #define BALL_JUMP_MIN 4
 117 #define BALL_JUMP_MAX 10
 118 #define BALL_DEFAULT_SPEED 3.0
 119
 120 #define RACKET_X_MID 15
 121 #define RACKET_Y_MID 24
 122
 123 #define BALL_X_MID 9
 124 #define BALL_Y_MID 9
 125
 126 #define GAME_X_MIN 41.0*2
 127 #define GAME_X_MAX 270.0*2
 128 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 129
 130 #define GAME_Y_MIN 155.0
 131 #define GAME_Y_MAX 330.0
 132 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 133
 134 #define GAME_EDGE_AREA 20.0
 135 #define GAME_EDGE_UPPER GAME_Y_MIN+GAME_EDGE_AREA
 136 #define GAME_EDGE_LOWER GAME_Y_MAX-GAME_EDGE_AREA
 137
 138 #define PLAYER_Y_MIN 0.0
 139 #define PLAYER_Y_MAX 1.0*HEIGHT
 140
 141 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 142 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 143 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 144 #define IS_OUT_Y(y) (y<GAME_Y_MIN || y>GAME_Y_MAX)
 145 #define IS_OUT_X(x) (x<GAME_X_MIN || x>GAME_X_MAX)
 146
 147 #define PLAYER_AREA_Y RACKET_Y_MID
 148 #define PLAYER_AREA_X RACKET_X_MID
 149 #define IS_NEAR_Y(py,by) (fabsf(py-by)<PLAYER_AREA_Y)
 150 #define IS_NEAR_Y_AI(py,by) (fabsf(py-by)<PLAYER_AREA_Y/3.5)
 151 #define IS_NEAR_X(px,bx) (fabsf(px-bx)<PLAYER_AREA_X)
 152 #define IS_NEAR_X_AI(px,bx) (fabsf(px-bx)<PLAYER_AREA_X*2)
 153
 154 #define PLAYER_STATE_MAX 7
 155 #define PLAYER_POWERSHOT 6.2
 156
 157 #define MOVE_Y_SEED 3
 158
 159 void game( bool);
 160 void render( GameState*);
 161 bool step( GameState*);
 162 void limit_value( float*, float, float);
 163 float get_phase( GameState*);
 164 float get_move_y( GameState*, unsigned char);
 165 void input_human( Player*, bool, bool, bool);
 166 void input_ai( Player*, Ball*, Player*, GameState*);
 167 void game_setup_serve( GameState*);
 168 float ngram_predictor( GameState*);
 169
 170 void score_game( GameState*, bool);
 171 char* format_sets( GameState*);
 172 char* format_game( GameState*);
 173 char* format_status( GameState*);
 174 int game_get_winner( GameState*);
 175
 176 #endif
 177