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 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 typedef unsigned char referee_t;
  50 enum {
  51     REFEREE_NORMAL,
  52     REFEREE_OUT,
  53     REFEREE_PLAYER1,
  54     REFEREE_PLAYER2,
  55     REFEREE_COUNT
  56 };
  57
  58 enum {
  59     WINNER_NONE,
  60     WINNER_PLAYER1,
  61     WINNER_PLAYER2
  62 };
  63
  64 enum {
  65     SOUND_EVENT_NONE     = 0<<0,
  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 #define SOUND_EVENT_COUNT 4
  73
  74 typedef unsigned char soundevent_t;
  75
  76
  77 typedef struct {
  78     const char* name;
  79     const char* area;
  80     const char* city;
  81     image_id court_type;
  82     unsigned int max_visitors;
  83     const char* court_type_name;
  84     image_id photo;
  85     unsigned int photo_frames;
  86     unsigned int worldmap_x;
  87     unsigned int worldmap_y;
  88     bool has_referee;
  89 } Location;
  90
  91 typedef struct {
  92     float x;
  93     float y;
  94     float z;
  95     float move_x;
  96     float move_y;
  97     float move_z;
  98     float restitution;
  99     bool ground_hit;
 100     int last_hit_by;
 101     bool inhibit_gravity;
 102 } Ball;
 103
 104 typedef struct {
 105     InputDevice* input;
 106     int input_device_index;
 107     float x;
 108     float y;
 109     float power;
 110     float power_up_factor;
 111     float power_down_factor;
 112     bool use_power;
 113     unsigned int score;
 114     unsigned char desire;
 115     bool type; /* is this player ai-controlled or human? */
 116     int game; /* score for the current game */
 117     int sets[SETS_TO_WIN*2]; /* score for each set */
 118     float accelerate; /* a value [0..1] how fast the user accelerates */
 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 unsigned int eventcounter_t;
 147 enum {
 148     EVENTCOUNTER_RENDERSTATE_START = 0,
 149     EVENTCOUNTER_GAMESTATE_START = 1
 150 };
 151
 152 typedef unsigned char statusmessage_t;
 153 enum {
 154     STATUSMSG_NONE,
 155     STATUSMSG_WELCOME,
 156     STATUSMSG_DEFAULT,
 157     STATUSMSG_NET,
 158     STATUSMSG_OUT,
 159     STATUSMSG_FAULT,
 160     STATUSMSG_P1SCORES,
 161     STATUSMSG_P2SCORES,
 162     STATUSMSG_VOLLEY,
 163     STATUSMSG_DIDNTCATCH
 164 };
 165
 166 typedef struct {
 167     Location* location;
 168     int current_location; /* index of loc. in global location table */
 169     Ball ball;
 170     Player players[MAXPLAYERS];
 171     Uint32 time;
 172     unsigned int serving_player;
 173     referee_t referee;
 174     unsigned int current_set;
 175     int winner;
 176     soundevent_t sound_events;
 177     unsigned int rain;
 178     unsigned int fog;
 179     bool night;
 180     int wind;
 181     int score_event;
 182     unsigned int score_time;
 183     eventcounter_t ec_game;
 184     eventcounter_t ec_sets;
 185     statusmessage_t status_message;
 186 } GameState;
 187
 188 typedef struct {
 189     soundevent_t sound_events;
 190     referee_t referee;
 191     eventcounter_t ec_game;
 192     eventcounter_t ec_sets;
 193     statusmessage_t status_message;
 194     const char* text_status;
 195     const char* text_game;
 196     const char* text_sets;
 197 } RenderState;
 198
 199 #define PI 3.1415
 200
 201 #define GAME_TICKS 15
 202
 203 #define GRAVITY -.03
 204
 205 #define RACKET_X_MID 15
 206 #define RACKET_Y_MID 24
 207
 208 #define BALL_X_MID 9
 209 #define BALL_Y_MID 9
 210
 211 #define GAME_X_MIN 41.0*2
 212 #define GAME_X_MAX 270.0*2
 213 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 214
 215 #define GAME_Y_MIN 155.0
 216 #define GAME_Y_MAX 330.0
 217 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 218
 219 /* net size and collision detection */
 220 #define NET_X 320
 221 #define NET_Y 107
 222 #define NET_WIDTH 5
 223 #define NET_HEIGHT 273
 224 #define NET_TALLNESS 5
 225 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 226 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 227 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 228 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 229
 230 /* "in field" coordinates (left and right part of court) */
 231 #define FIELD_LEFT_X 119
 232 #define FIELD_LEFT_WIDTH 202
 233 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 234 #define FIELD_RIGHT_X 326
 235 #define FIELD_RIGHT_WIDTH 202
 236 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 237
 238 /* coordinates for one-vs-one game */
 239 #define FIELD_SINGLE_Y 154
 240 #define FIELD_SINGLE_HEIGHT 178
 241 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 242
 243 /* coordinates for two-vs-two game */
 244 #define FIELD_DOUBLE_Y 115
 245 #define FIELD_DOUBLE_HEIGHT 256
 246 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 247
 248 /* player = player that last hit the ball, */
 249 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 250 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 251
 252 #define PLAYER_Y_MIN 0
 253 #define PLAYER_Y_MAX HEIGHT
 254
 255 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 256 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 257 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 258
 259 #define PLAYER_AREA_Y RACKET_Y_MID
 260 #define PLAYER_AREA_X RACKET_X_MID
 261 #define IS_NEAR_Y(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y)
 262 #define IS_NEAR_Y_AI(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y/3.5)
 263 #define IS_NEAR_X(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X)
 264 #define IS_NEAR_X_AI(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X*2.)
 265
 266 #define PLAYER_MOVE_Y 5.0
 267 #define PLAYER_ACCEL_DEFAULT 0.2
 268 #define PLAYER_ACCEL_INCREASE 1.2
 269
 270 #define POWER_UP_FACTOR 1.1
 271 #define POWER_DOWN_FACTOR 0.9
 272 #define PLAYER_POWER_MAX 100
 273
 274 #define MOVE_Y_SEED 3
 275
 276 #define PLAYER(s, num) (s->players[num-1])
 277
 278 /* Comment out the following #define to enable mouse control */
 279 #define ENABLE_MOUSE
 280
 281 /* GameState handling*/
 282 GameState *gamestate_new();
 283
 284 int gamestate_save(GameState* s, const char* filename);
 285 GameState* gamestate_load(const char* filename);
 286
 287 /* Game module functions */
 288 void gameloop(GameState*);
 289 void render(const GameState*, RenderState*);
 290 bool step( GameState*);
 291 void limit_value( float*, float, float);
 292 float get_move_y( GameState*, unsigned char);
 293 void input_human(GameState*, int);
 294 void input_ai(GameState*, int);
 295 void game_setup_serve( GameState*);
 296
 297 int score_game(GameState*);
 298 int game_get_winner( GameState*);
 299
 300 /* Helper functions for the renderer */
 301 const char* format_sets(const GameState*);
 302 const char* format_game(const GameState*);
 303 const char* format_status(const GameState*);
 304
 305 #endif
 306