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