game.h

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008, 2009 Thomas Perl <thp@thpinfo.com>
   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     REFEREE_COUNT
  54 };
  55 #else
  56 enum {
  57     REFEREE_NORMAL,
  58     REFEREE_PLAYER1,
  59     REFEREE_OUT,
  60     REFEREE_PLAYER2,
  61     REFEREE_COUNT
  62 };
  63 #endif
  64
  65 enum {
  66     WINNER_NONE,
  67     WINNER_PLAYER1,
  68     WINNER_PLAYER2
  69 };
  70
  71 typedef struct {
  72     float x;
  73     float y;
  74     float move_x;
  75     float move_y;
  76     float jump;
  77 } Ball;
  78
  79 typedef struct {
  80     float x;
  81     float y;
  82     unsigned char state;
  83     unsigned int score;
  84     bool responsible; /* responsible for the next fault (if any) */
  85     unsigned char desire; /* what the player aims to do (0=normal, 1=upper edge, 2=lower edge)*/
  86     bool type; /* is this player ai-controlled or human? */
  87     float ball_dest; /* prospective y-position of ball */
  88     bool state_locked; /* enabled when user keeps pressing the "hit" key */
  89     int game; /* score for the current game */
  90     int sets[SETS_TO_WIN*2]; /* score for each set */
  91     int mouse_x; /* x position of mouse */
  92     int mouse_y; /* y position of mouse */
  93     float accelerate; /* a value [0..1] how fast the user accelerates */
  94     bool mouse_locked; /* on start, ignore unpressed mouse state */
  95 } Player;
  96
  97 enum {
  98     PLAYER_TYPE_HUMAN,
  99     PLAYER_TYPE_AI,
 100 };
 101
 102 enum {
 103     DESIRE_NORMAL,
 104     DESIRE_MAX
 105 };
 106
 107 typedef struct {
 108     Ball ball;
 109     Ball ground;
 110     Player player1;
 111     Player player2;
 112     float phase;
 113     unsigned int time;
 114     bool was_stopped;
 115     bool player1_serves;
 116     char* status;
 117     char game_score_str[50];
 118     char sets_score_str[50];
 119     unsigned char referee;
 120     unsigned int current_set;
 121     int winner;
 122     bool is_over;
 123     unsigned int court_type;
 124     unsigned int old_court_type;
 125     unsigned int history[3];
 126     unsigned int history_size;
 127     bool history_is_locked;
 128     unsigned char ngram[NGRAM_STEPS][NGRAM_STEPS][NGRAM_STEPS];
 129     float ngram_prediction;
 130     sound_id play_sound;
 131     float joystick_y;
 132     float joystick_x;
 133     unsigned char joystick_a;
 134     unsigned int rain;
 135     unsigned int fog;
 136     bool night;
 137     int wind;
 138     unsigned int windtime;
 139     int timelimit;
 140     bool text_changed;
 141     unsigned char old_referee;
 142 } GameState;
 143
 144 #define PI 3.1415
 145
 146 #define GAME_TICKS 15
 147
 148 #define GROUND_PHASE 0.4
 149 #define PHASE_AMP 3.2
 150
 151 #define BALL_JUMP_MIN 4
 152 #define BALL_JUMP_MAX 10
 153
 154 #define RACKET_X_MID 15
 155 #define RACKET_Y_MID 24
 156
 157 #define BALL_X_MID 9
 158 #define BALL_Y_MID 9
 159
 160 #define GAME_X_MIN 41.0*2
 161 #define GAME_X_MAX 270.0*2
 162 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 163
 164 #define GAME_Y_MIN 155.0
 165 #define GAME_Y_MAX 330.0
 166 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 167
 168 #define GAME_EDGE_AREA 20.0
 169 #define GAME_EDGE_UPPER GAME_Y_MIN+GAME_EDGE_AREA
 170 #define GAME_EDGE_LOWER GAME_Y_MAX-GAME_EDGE_AREA
 171
 172 #define PLAYER_Y_MIN 0.0
 173 #define PLAYER_Y_MAX 1.0*HEIGHT
 174
 175 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 176 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 177 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 178 #define IS_OUT_Y(y) (y<GAME_Y_MIN || y>GAME_Y_MAX)
 179 #define IS_OUT_X(x) (x<GAME_X_MIN || x>GAME_X_MAX)
 180
 181 #define PLAYER_AREA_Y RACKET_Y_MID
 182 #define PLAYER_AREA_X RACKET_X_MID
 183 #define IS_NEAR_Y(py,by) (fabsf(py-by)<PLAYER_AREA_Y)
 184 #define IS_NEAR_Y_AI(py,by) (fabsf(py-by)<PLAYER_AREA_Y/3.5)
 185 #define IS_NEAR_X(px,bx) (fabsf(px-bx)<PLAYER_AREA_X)
 186 #define IS_NEAR_X_AI(px,bx) (fabsf(px-bx)<PLAYER_AREA_X*2)
 187
 188 #define PLAYER_MOVE_Y 5.0
 189 #define PLAYER_ACCEL_DEFAULT 0.2
 190 #define PLAYER_ACCEL_INCREASE 1.2
 191 #define PLAYER_STATE_MAX 7
 192 #define PLAYER_POWERSHOT 6.2
 193
 194 #define MOVE_Y_SEED 3
 195
 196 /* Comment out the following #define to enable mouse control */
 197 #define ENABLE_MOUSE
 198
 199 /* GameState handling*/
 200 GameState *gamestate_new();
 201
 202
 203 /* Game module functions */
 204 void gameloop(GameState*);
 205 void render( GameState*);
 206 bool step( GameState*);
 207 void limit_value( float*, float, float);
 208 float get_phase( GameState*);
 209 float get_move_y( GameState*, unsigned char);
 210 void input_human( Player*, bool, bool, bool, bool, GameState*);
 211 void input_ai( Player*, Ball*, Player*, GameState*);
 212 void game_setup_serve( GameState*);
 213 float ngram_predictor( GameState*);
 214
 215 void score_game( GameState*, bool);
 216 char* format_sets( GameState*);
 217 char* format_game( GameState*);
 218 char* format_status( GameState*);
 219 int game_get_winner( GameState*);
 220
 221 #endif
 222