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