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