game.h

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008 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 #include "sound.h"
  30
  31 #define SETS_TO_WIN 3
  32
  33 #define NGRAM_STEPS 6
  34
  35 #ifdef DELUXE_EDITION
  36 #  define BALL_STATES 16
  37 #else
  38 #  define BALL_STATES 4
  39 #endif
  40
  41 typedef unsigned char bool;
  42 enum {
  43     false,
  44     true
  45 };
  46
  47 #ifdef EXTENDED_REFEREE
  48 enum {
  49     REFEREE_NORMAL,
  50     REFEREE_OUT,
  51     REFEREE_PLAYER1,
  52     REFEREE_PLAYER2
  53 };
  54 #else
  55 enum {
  56     REFEREE_NORMAL,
  57     REFEREE_PLAYER1,
  58     REFEREE_OUT,
  59     REFEREE_PLAYER2
  60 };
  61 #endif
  62
  63 enum {
  64     WINNER_NONE,
  65     WINNER_PLAYER1,
  66     WINNER_PLAYER2
  67 };
  68
  69 typedef struct {
  70     float x;
  71     float y;
  72     float move_x;
  73     float move_y;
  74     float jump;
  75 } Ball;
  76
  77 typedef struct {
  78     float x;
  79     float y;
  80     unsigned char state;
  81     unsigned int score;
  82     bool responsible; /* responsible for the next fault (if any) */
  83     unsigned char desire; /* what the player aims to do (0=normal, 1=upper edge, 2=lower edge)*/
  84     bool type; /* is this player ai-controlled or human? */
  85     float ball_dest; /* prospective y-position of ball */
  86     bool state_locked; /* enabled when user keeps pressing the "hit" key */
  87     int game; /* score for the current game */
  88     int sets[SETS_TO_WIN*2]; /* score for each set */
  89     int mouse_x; /* x position of mouse */
  90     int mouse_y; /* y position of mouse */
  91     float accelerate; /* a value [0..1] how fast the user accelerates */
  92     bool mouse_locked; /* on start, ignore unpressed mouse state */
  93 } Player;
  94
  95 enum {
  96     PLAYER_TYPE_HUMAN,
  97     PLAYER_TYPE_AI,
  98 };
  99
 100 enum {
 101     DESIRE_NORMAL,
 102     DESIRE_MAX
 103 };
 104
 105 typedef struct {
 106     Ball ball;
 107     Ball ground;
 108     Player player1;
 109     Player player2;
 110     float phase;
 111     unsigned int time;
 112     bool was_stopped;
 113     bool player1_serves;
 114     char* status;
 115     char game_score_str[50];
 116     char sets_score_str[50];
 117     unsigned char referee;
 118     unsigned int current_set;
 119     int winner;
 120     bool is_over;
 121     unsigned int court_type;
 122     unsigned int old_court_type;
 123     unsigned int history[3];
 124     unsigned int history_size;
 125     bool history_is_locked;
 126     unsigned char ngram[NGRAM_STEPS][NGRAM_STEPS][NGRAM_STEPS];
 127     float ngram_prediction;
 128     sound_id play_sound;
 129     float joystick_y;
 130     float joystick_x;
 131     unsigned char joystick_a;
 132     unsigned int rain;
 133     unsigned int fog;
 134     bool night;
 135     int wind;
 136     unsigned int windtime;
 137     int timelimit;
 138 } GameState;
 139
 140 #define PI 3.1415
 141
 142 #define GAME_TICKS 15
 143
 144 #define GROUND_PHASE 0.4
 145 #define PHASE_AMP 3.2
 146
 147 #define BALL_JUMP_MIN 4
 148 #define BALL_JUMP_MAX 10
 149
 150 #define RACKET_X_MID 15
 151 #define RACKET_Y_MID 24
 152
 153 #define BALL_X_MID 9
 154 #define BALL_Y_MID 9
 155
 156 #define GAME_X_MIN 41.0*2
 157 #define GAME_X_MAX 270.0*2
 158 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 159
 160 #define GAME_Y_MIN 155.0
 161 #define GAME_Y_MAX 330.0
 162 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 163
 164 #define GAME_EDGE_AREA 20.0
 165 #define GAME_EDGE_UPPER GAME_Y_MIN+GAME_EDGE_AREA
 166 #define GAME_EDGE_LOWER GAME_Y_MAX-GAME_EDGE_AREA
 167
 168 #define PLAYER_Y_MIN 0.0
 169 #define PLAYER_Y_MAX 1.0*HEIGHT
 170
 171 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 172 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 173 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 174 #define IS_OUT_Y(y) (y<GAME_Y_MIN || y>GAME_Y_MAX)
 175 #define IS_OUT_X(x) (x<GAME_X_MIN || x>GAME_X_MAX)
 176
 177 #define PLAYER_AREA_Y RACKET_Y_MID
 178 #define PLAYER_AREA_X RACKET_X_MID
 179 #define IS_NEAR_Y(py,by) (fabsf(py-by)<PLAYER_AREA_Y)
 180 #define IS_NEAR_Y_AI(py,by) (fabsf(py-by)<PLAYER_AREA_Y/3.5)
 181 #define IS_NEAR_X(px,bx) (fabsf(px-bx)<PLAYER_AREA_X)
 182 #define IS_NEAR_X_AI(px,bx) (fabsf(px-bx)<PLAYER_AREA_X*2)
 183
 184 #define PLAYER_MOVE_Y 5.0
 185 #define PLAYER_ACCEL_DEFAULT 0.2
 186 #define PLAYER_ACCEL_INCREASE 1.2
 187 #define PLAYER_STATE_MAX 7
 188 #define PLAYER_POWERSHOT 6.2
 189
 190 #define MOVE_Y_SEED 3
 191
 192 /* Comment out the following #define to enable mouse control */
 193 #define ENABLE_MOUSE
 194
 195 /* GameState handling*/
 196 GameState *gamestate_new();
 197
 198
 199 /* Game module functions */
 200 void gameloop(GameState*);
 201 void render( GameState*);
 202 bool step( GameState*);
 203 void limit_value( float*, float, float);
 204 float get_phase( GameState*);
 205 float get_move_y( GameState*, unsigned char);
 206 void input_human( Player*, bool, bool, bool, bool, GameState*);
 207 void input_ai( Player*, Ball*, Player*, GameState*);
 208 void game_setup_serve( GameState*);
 209 float ngram_predictor( GameState*);
 210
 211 void score_game( GameState*, bool);
 212 char* format_sets( GameState*);
 213 char* format_game( GameState*);
 214 char* format_status( GameState*);
 215 int game_get_winner( GameState*);
 216
 217 #endif
 218