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