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 #include "graphics.h"
  31 #include "input.h"
  32
  33 #define SETS_TO_WIN 3
  34
  35 #define NGRAM_STEPS 6
  36
  37 #define MAXPLAYERS 2
  38
  39 #ifdef DELUXE_EDITION
  40 #  define BALL_STATES 16
  41 #else
  42 #  define BALL_STATES 4
  43 #endif
  44
  45 typedef unsigned char bool;
  46 enum {
  47     false,
  48     true
  49 };
  50
  51 #ifdef EXTENDED_REFEREE
  52 enum {
  53     REFEREE_NORMAL,
  54     REFEREE_OUT,
  55     REFEREE_PLAYER1,
  56     REFEREE_PLAYER2,
  57     REFEREE_COUNT
  58 };
  59 #else
  60 enum {
  61     REFEREE_NORMAL,
  62     REFEREE_PLAYER1,
  63     REFEREE_OUT,
  64     REFEREE_PLAYER2,
  65     REFEREE_COUNT
  66 };
  67 #endif
  68
  69 enum {
  70     WINNER_NONE,
  71     WINNER_PLAYER1,
  72     WINNER_PLAYER2
  73 };
  74
  75 enum {
  76     SOUND_EVENT_GROUND   = 1<<0,
  77     SOUND_EVENT_OUT      = 1<<1,
  78     SOUND_EVENT_APPLAUSE = 1<<2,
  79     SOUND_EVENT_RACKET   = 1<<3
  80 };
  81
  82 typedef struct {
  83     const char* name;
  84     const char* area;
  85     const char* city;
  86     image_id court_type;
  87     unsigned int max_visitors;
  88     const char* court_type_name;
  89     image_id photo;
  90     unsigned int photo_frames;
  91     unsigned int worldmap_x;
  92     unsigned int worldmap_y;
  93     bool has_referee;
  94 } Location;
  95
  96 typedef struct {
  97     float x;
  98     float y;
  99     float z;
 100     float move_x;
 101     float move_y;
 102     float move_z;
 103     float restitution;
 104     bool ground_hit;
 105     int last_hit_by;
 106     bool inhibit_gravity;
 107 } Ball;
 108
 109 typedef struct {
 110     InputDevice* input;
 111     int input_device_index;
 112     float x;
 113     float y;
 114     float power;
 115     float power_up_factor;
 116     float power_down_factor;
 117     bool use_power;
 118     unsigned int score;
 119     unsigned char desire;
 120     bool type; /* is this player ai-controlled or human? */
 121     float ball_dest; /* prospective y-position of ball */
 122     bool state_locked; /* enabled when user keeps pressing the "hit" key */
 123     int game; /* score for the current game */
 124     int sets[SETS_TO_WIN*2]; /* score for each set */
 125     int mouse_x; /* x position of mouse */
 126     int mouse_y; /* y position of mouse */
 127     float accelerate; /* a value [0..1] how fast the user accelerates */
 128     bool mouse_locked; /* on start, ignore unpressed mouse state */
 129 } Player;
 130
 131 enum {
 132     PLAYER_TYPE_HUMAN,
 133     PLAYER_TYPE_AI
 134 };
 135
 136 enum {
 137     DESIRE_NORMAL,
 138     DESIRE_TOPSPIN,
 139     DESIRE_SMASH,
 140     DESIRE_MAX
 141 };
 142
 143 /* wait 2 seconds before we score the game */
 144 #define SCORING_DELAY 2000
 145
 146 enum {
 147     SCORE_UNDECIDED,
 148     SCORE_EVENT_NET,
 149     SCORE_EVENT_OUT,
 150     SCORE_EVENT_GROUND_INVALID,
 151     SCORE_EVENT_GROUND_VALID,
 152     SCORE_EVENT_OFFSCREEN,
 153     SCORE_EVENT_MAX
 154 };
 155
 156 typedef struct {
 157     Location* location;
 158     Ball ball;
 159     Player players[MAXPLAYERS];
 160     Uint32 time;
 161     bool was_stopped;
 162     unsigned int serving_player;
 163     const char* status;
 164     char game_score_str[50];
 165     char sets_score_str[50];
 166     unsigned char referee;
 167     unsigned int current_set;
 168     int winner;
 169     bool is_over;
 170     image_id displayed_court_type;
 171     unsigned int history[3];
 172     unsigned int history_size;
 173     bool history_is_locked;
 174     unsigned char ngram[NGRAM_STEPS][NGRAM_STEPS][NGRAM_STEPS];
 175     float ngram_prediction;
 176     unsigned int sound_events;
 177     float joystick_y;
 178     float joystick_x;
 179     unsigned char joystick_a;
 180     unsigned int rain;
 181     unsigned int fog;
 182     bool night;
 183     int wind;
 184     unsigned int windtime;
 185     Uint32 timelimit;
 186     bool text_changed;
 187     unsigned char old_referee;
 188     int score_event;
 189     unsigned int score_time;
 190 } GameState;
 191
 192 #define PI 3.1415
 193
 194 #define GAME_TICKS 15
 195
 196 #define GRAVITY -.03
 197
 198 #define RACKET_X_MID 15
 199 #define RACKET_Y_MID 24
 200
 201 #define BALL_X_MID 9
 202 #define BALL_Y_MID 9
 203
 204 #define GAME_X_MIN 41.0*2
 205 #define GAME_X_MAX 270.0*2
 206 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 207
 208 #define GAME_Y_MIN 155.0
 209 #define GAME_Y_MAX 330.0
 210 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 211
 212 /* net size and collision detection */
 213 #define NET_X 320
 214 #define NET_Y 107
 215 #define NET_WIDTH 5
 216 #define NET_HEIGHT 273
 217 #define NET_TALLNESS 5
 218 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 219 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 220 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 221 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 222
 223 /* "in field" coordinates (left and right part of court) */
 224 #define FIELD_LEFT_X 119
 225 #define FIELD_LEFT_WIDTH 202
 226 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 227 #define FIELD_RIGHT_X 326
 228 #define FIELD_RIGHT_WIDTH 202
 229 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 230
 231 /* coordinates for one-vs-one game */
 232 #define FIELD_SINGLE_Y 154
 233 #define FIELD_SINGLE_HEIGHT 178
 234 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 235
 236 /* coordinates for two-vs-two game */
 237 #define FIELD_DOUBLE_Y 115
 238 #define FIELD_DOUBLE_HEIGHT 256
 239 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 240
 241 /* player = player that last hit the ball, */
 242 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 243 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 244
 245 #define PLAYER_Y_MIN 0
 246 #define PLAYER_Y_MAX HEIGHT
 247
 248 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 249 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 250 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 251
 252 #define PLAYER_AREA_Y RACKET_Y_MID
 253 #define PLAYER_AREA_X RACKET_X_MID
 254 #define IS_NEAR_Y(py,by) (absf((py)-(by))<(float)PLAYER_AREA_Y)
 255 #define IS_NEAR_Y_AI(py,by) (absf((py)-(by))<(float)PLAYER_AREA_Y/3.5)
 256 #define IS_NEAR_X(px,bx) (absf((px)-(bx))<(float)PLAYER_AREA_X)
 257 #define IS_NEAR_X_AI(px,bx) (absf((px)-(bx))<(float)PLAYER_AREA_X*2.)
 258
 259 #define PLAYER_MOVE_Y 5.0
 260 #define PLAYER_ACCEL_DEFAULT 0.2
 261 #define PLAYER_ACCEL_INCREASE 1.2
 262
 263 #define POWER_UP_FACTOR 1.1
 264 #define POWER_DOWN_FACTOR 0.9
 265 #define PLAYER_POWER_MAX 100
 266
 267 #define MOVE_Y_SEED 3
 268
 269 #define PLAYER(s, num) (s->players[num-1])
 270
 271 /* Comment out the following #define to enable mouse control */
 272 #define ENABLE_MOUSE
 273
 274 /* GameState handling*/
 275 GameState *gamestate_new();
 276
 277
 278 /* Game module functions */
 279 void gameloop(GameState*);
 280 void render( GameState*);
 281 bool step( GameState*);
 282 void limit_value( float*, float, float);
 283 float get_move_y( GameState*, unsigned char);
 284 void input_human(GameState*, int);
 285 void input_ai(GameState*, int);
 286 void game_setup_serve( GameState*);
 287 float ngram_predictor( GameState*);
 288
 289 int score_game(GameState*);
 290 char* format_sets( GameState*);
 291 char* format_game( GameState*);
 292 char* format_status( GameState*);
 293 int game_get_winner( GameState*);
 294
 295 #endif
 296