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 #define MAXPLAYERS 2
  36
  37 #ifdef DELUXE_EDITION
  38 #  define BALL_STATES 16
  39 #else
  40 #  define BALL_STATES 4
  41 #endif
  42
  43 typedef unsigned char bool;
  44 enum {
  45     false,
  46     true
  47 };
  48
  49 #ifdef EXTENDED_REFEREE
  50 enum {
  51     REFEREE_NORMAL,
  52     REFEREE_OUT,
  53     REFEREE_PLAYER1,
  54     REFEREE_PLAYER2,
  55     REFEREE_COUNT
  56 };
  57 #else
  58 enum {
  59     REFEREE_NORMAL,
  60     REFEREE_PLAYER1,
  61     REFEREE_OUT,
  62     REFEREE_PLAYER2,
  63     REFEREE_COUNT
  64 };
  65 #endif
  66
  67 enum {
  68     WINNER_NONE,
  69     WINNER_PLAYER1,
  70     WINNER_PLAYER2
  71 };
  72
  73 typedef struct {
  74     float x;
  75     float y;
  76     float z;
  77     float move_x;
  78     float move_y;
  79     float move_z;
  80     bool ground_hit;
  81     int last_hit_by;
  82     bool inhibit_gravity;
  83 } Ball;
  84
  85 typedef struct {
  86     float x;
  87     float y;
  88     unsigned char state;
  89     unsigned int score;
  90     unsigned char desire;
  91     bool type; /* is this player ai-controlled or human? */
  92     float ball_dest; /* prospective y-position of ball */
  93     bool state_locked; /* enabled when user keeps pressing the "hit" key */
  94     int game; /* score for the current game */
  95     int sets[SETS_TO_WIN*2]; /* score for each set */
  96     int mouse_x; /* x position of mouse */
  97     int mouse_y; /* y position of mouse */
  98     float accelerate; /* a value [0..1] how fast the user accelerates */
  99     bool mouse_locked; /* on start, ignore unpressed mouse state */
 100 } Player;
 101
 102 enum {
 103     PLAYER_TYPE_HUMAN,
 104     PLAYER_TYPE_AI
 105 };
 106
 107 enum {
 108     DESIRE_NORMAL,
 109     DESIRE_TOPSPIN,
 110     DESIRE_SMASH,
 111     DESIRE_MAX
 112 };
 113
 114 /* wait 2 seconds before we score the game */
 115 #define SCORING_DELAY 2000
 116
 117 enum {
 118     SCORE_UNDECIDED,
 119     SCORE_EVENT_NET,
 120     SCORE_EVENT_OUT,
 121     SCORE_EVENT_GROUND_INVALID,
 122     SCORE_EVENT_GROUND_VALID,
 123     SCORE_EVENT_OFFSCREEN,
 124     SCORE_EVENT_MAX
 125 };
 126
 127 typedef struct {
 128     Ball ball;
 129     Player players[MAXPLAYERS];
 130     Uint32 time;
 131     bool was_stopped;
 132     unsigned int serving_player;
 133     const char* status;
 134     char game_score_str[50];
 135     char sets_score_str[50];
 136     unsigned char referee;
 137     unsigned int current_set;
 138     int winner;
 139     bool is_over;
 140     unsigned int court_type;
 141     unsigned int old_court_type;
 142     unsigned int history[3];
 143     unsigned int history_size;
 144     bool history_is_locked;
 145     unsigned char ngram[NGRAM_STEPS][NGRAM_STEPS][NGRAM_STEPS];
 146     float ngram_prediction;
 147     sound_id play_sound;
 148     float joystick_y;
 149     float joystick_x;
 150     unsigned char joystick_a;
 151     unsigned int rain;
 152     unsigned int fog;
 153     bool night;
 154     int wind;
 155     unsigned int windtime;
 156     Uint32 timelimit;
 157     bool text_changed;
 158     unsigned char old_referee;
 159     int score_event;
 160     unsigned int score_time;
 161 } GameState;
 162
 163 #define PI 3.1415
 164
 165 #define GAME_TICKS 15
 166
 167 #define GRAVITY -.03
 168 #define RESTITUTION 0.6
 169
 170 #define RACKET_X_MID 15
 171 #define RACKET_Y_MID 24
 172
 173 #define BALL_X_MID 9
 174 #define BALL_Y_MID 9
 175
 176 #define GAME_X_MIN 41.0*2
 177 #define GAME_X_MAX 270.0*2
 178 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 179
 180 #define GAME_Y_MIN 155.0
 181 #define GAME_Y_MAX 330.0
 182 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 183
 184 /* net size and collision detection */
 185 #define NET_X 320
 186 #define NET_Y 107
 187 #define NET_WIDTH 5
 188 #define NET_HEIGHT 273
 189 #define NET_TALLNESS 5
 190 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 191 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 192 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 193 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 194
 195 /* "in field" coordinates (left and right part of court) */
 196 #define FIELD_LEFT_X 119
 197 #define FIELD_LEFT_WIDTH 202
 198 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 199 #define FIELD_RIGHT_X 326
 200 #define FIELD_RIGHT_WIDTH 202
 201 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 202
 203 /* coordinates for one-vs-one game */
 204 #define FIELD_SINGLE_Y 154
 205 #define FIELD_SINGLE_HEIGHT 178
 206 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 207
 208 /* coordinates for two-vs-two game */
 209 #define FIELD_DOUBLE_Y 115
 210 #define FIELD_DOUBLE_HEIGHT 256
 211 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 212
 213 /* player = player that last hit the ball, */
 214 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 215 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 216
 217 #define PLAYER_Y_MIN 0
 218 #define PLAYER_Y_MAX HEIGHT
 219
 220 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 221 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 222 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 223
 224 #define PLAYER_AREA_Y RACKET_Y_MID
 225 #define PLAYER_AREA_X RACKET_X_MID
 226 #define IS_NEAR_Y(py,by) (fabsf((py)-(by))<PLAYER_AREA_Y)
 227 #define IS_NEAR_Y_AI(py,by) (fabsf((py)-(by))<PLAYER_AREA_Y/3.5)
 228 #define IS_NEAR_X(px,bx) (fabsf((px)-(bx))<PLAYER_AREA_X)
 229 #define IS_NEAR_X_AI(px,bx) (fabsf((px)-(bx))<PLAYER_AREA_X*2)
 230
 231 #define PLAYER_MOVE_Y 5.0
 232 #define PLAYER_ACCEL_DEFAULT 0.2
 233 #define PLAYER_ACCEL_INCREASE 1.2
 234 #define PLAYER_STATE_MAX 7
 235 #define PLAYER_POWERSHOT 6.2
 236
 237 #define MOVE_Y_SEED 3
 238
 239 #define PLAYER(s, num) (s->players[num-1])
 240
 241 /* Comment out the following #define to enable mouse control */
 242 #define ENABLE_MOUSE
 243
 244 /* GameState handling*/
 245 GameState *gamestate_new();
 246
 247
 248 /* Game module functions */
 249 void gameloop(GameState*);
 250 void render( GameState*);
 251 bool step( GameState*);
 252 void limit_value( float*, float, float);
 253 float get_move_y( GameState*, unsigned char);
 254 void input_human( Player*, bool, bool, bool, bool, bool, bool, GameState*);
 255 void input_ai( Player*, Ball*, Player*, GameState*);
 256 void game_setup_serve( GameState*);
 257 float ngram_predictor( GameState*);
 258
 259 void score_game(GameState*);
 260 char* format_sets( GameState*);
 261 char* format_game( GameState*);
 262 char* format_status( GameState*);
 263 int game_get_winner( GameState*);
 264
 265 #endif
 266