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 typedef unsigned char winner_t;
  59 enum {
  60     WINNER_NONE,
  61     WINNER_PLAYER1,
  62     WINNER_PLAYER2
  63 };
  64
  65 typedef unsigned char soundevent_t;
  66 enum {
  67     SOUND_EVENT_NONE     = 0<<0,
  68     SOUND_EVENT_GROUND   = 1<<0,
  69     SOUND_EVENT_OUT      = 1<<1,
  70     SOUND_EVENT_APPLAUSE = 1<<2,
  71     SOUND_EVENT_RACKET   = 1<<3
  72 };
  73 #define SOUND_EVENT_COUNT 4
  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     bool night;
  88     unsigned int rain;
  89     unsigned int fog;
  90 } Location;
  91
  92 typedef struct {
  93     float x;
  94     float y;
  95     float z;
  96     float move_x;
  97     float move_y;
  98     float move_z;
  99     float restitution;
 100     bool ground_hit;
 101     int last_hit_by;
 102     bool inhibit_gravity;
 103 } Ball;
 104
 105 typedef struct {
 106     InputDevice* input;
 107     int input_device_index;
 108     float x;
 109     float y;
 110     float power;
 111     float power_up_factor;
 112     float power_down_factor;
 113     bool use_power;
 114     unsigned int score;
 115     unsigned char desire;
 116     bool type; /* is this player ai-controlled or human? */
 117     int game; /* score for the current game */
 118     int sets[SETS_TO_WIN*2]; /* score for each set */
 119     float accelerate; /* a value [0..1] how fast the user accelerates */
 120 } Player;
 121
 122 enum {
 123     PLAYER_TYPE_HUMAN,
 124     PLAYER_TYPE_AI
 125 };
 126
 127 enum {
 128     DESIRE_NORMAL,
 129     DESIRE_TOPSPIN,
 130     DESIRE_SMASH,
 131     DESIRE_MAX
 132 };
 133
 134 /* wait 2 seconds before we score the game */
 135 #define SCORING_DELAY 1000
 136
 137 typedef unsigned char scoreevent_t;
 138 enum {
 139     SCORE_UNDECIDED,
 140     SCORE_EVENT_NET,
 141     SCORE_EVENT_OUT,
 142     SCORE_EVENT_GROUND_INVALID,
 143     SCORE_EVENT_GROUND_VALID,
 144     SCORE_EVENT_OFFSCREEN,
 145     SCORE_EVENT_MAX
 146 };
 147
 148 typedef unsigned char eventcounter_t;
 149 enum {
 150     EVENTCOUNTER_RENDERSTATE_START = 0,
 151     EVENTCOUNTER_GAMESTATE_START = 1
 152 };
 153
 154 typedef unsigned char statusmessage_t;
 155 enum {
 156     STATUSMSG_NONE,
 157     STATUSMSG_WELCOME,
 158     STATUSMSG_DEFAULT,
 159     STATUSMSG_NET,
 160     STATUSMSG_OUT,
 161     STATUSMSG_FAULT,
 162     STATUSMSG_P1SCORES,
 163     STATUSMSG_P2SCORES,
 164     STATUSMSG_VOLLEY,
 165     STATUSMSG_DIDNTCATCH
 166 };
 167
 168 typedef struct {
 169     const Location* location;
 170     char current_location; /* index of loc. in global location table */
 171     Ball ball;
 172     Player players[MAXPLAYERS];
 173     unsigned char serving_player;
 174     referee_t referee;
 175     unsigned char current_set;
 176     winner_t winner;
 177     soundevent_t sound_events;
 178     scoreevent_t score_event;
 179     unsigned char score_time;
 180     eventcounter_t ec_game;
 181     eventcounter_t ec_sets;
 182     statusmessage_t status_message;
 183 } GameState;
 184
 185 typedef struct {
 186     soundevent_t sound_events;
 187     referee_t referee;
 188     eventcounter_t ec_game;
 189     eventcounter_t ec_sets;
 190     statusmessage_t status_message;
 191     const char* text_status;
 192     const char* text_game;
 193     const char* text_sets;
 194 } RenderState;
 195
 196 #define PI 3.1415
 197
 198 #define GAME_TICKS 15
 199
 200 #define GRAVITY -.03
 201
 202 #define RACKET_X_MID 15
 203 #define RACKET_Y_MID 24
 204
 205 #define BALL_X_MID 9
 206 #define BALL_Y_MID 9
 207
 208 #define GAME_X_MIN 41.0*2
 209 #define GAME_X_MAX 270.0*2
 210 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 211
 212 #define GAME_Y_MIN 155.0
 213 #define GAME_Y_MAX 330.0
 214 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 215
 216 /* net size and collision detection */
 217 #define NET_X 320
 218 #define NET_Y 107
 219 #define NET_WIDTH 5
 220 #define NET_HEIGHT 273
 221 #define NET_TALLNESS 5
 222 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 223 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 224 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 225 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 226
 227 /* "in field" coordinates (left and right part of court) */
 228 #define FIELD_LEFT_X 119
 229 #define FIELD_LEFT_WIDTH 202
 230 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 231 #define FIELD_RIGHT_X 326
 232 #define FIELD_RIGHT_WIDTH 202
 233 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 234
 235 /* coordinates for one-vs-one game */
 236 #define FIELD_SINGLE_Y 154
 237 #define FIELD_SINGLE_HEIGHT 178
 238 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 239
 240 /* coordinates for two-vs-two game */
 241 #define FIELD_DOUBLE_Y 115
 242 #define FIELD_DOUBLE_HEIGHT 256
 243 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 244
 245 /* player = player that last hit the ball, */
 246 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 247 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 248
 249 #define PLAYER_Y_MIN 0
 250 #define PLAYER_Y_MAX HEIGHT
 251
 252 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 253 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 254 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 255
 256 #define PLAYER_AREA_Y RACKET_Y_MID
 257 #define PLAYER_AREA_X RACKET_X_MID
 258 #define IS_NEAR_Y(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y)
 259 #define IS_NEAR_Y_AI(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y/3.5)
 260 #define IS_NEAR_X(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X)
 261 #define IS_NEAR_X_AI(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X*2.)
 262
 263 #define PLAYER_MOVE_Y 5.0
 264 #define PLAYER_ACCEL_DEFAULT 0.2
 265 #define PLAYER_ACCEL_INCREASE 1.2
 266
 267 #define POWER_UP_FACTOR 1.1
 268 #define POWER_DOWN_FACTOR 0.9
 269 #define PLAYER_POWER_MAX 100
 270
 271 #define PLAYER(s, num) (s->players[num-1])
 272
 273 /* Comment out the following #define to enable mouse control */
 274 #define ENABLE_MOUSE
 275
 276 /* GameState handling*/
 277 GameState *gamestate_new();
 278
 279 int gamestate_save(GameState* s, const char* filename);
 280 GameState* gamestate_load(const char* filename);
 281
 282 /* Game module functions */
 283 void gameloop(GameState*);
 284 void step(GameState*);
 285 bool handle_input(GameState*);
 286 void render(const GameState*, RenderState*);
 287 float get_move_y( GameState*, unsigned char);
 288 void input_human(GameState*, int);
 289 void input_ai(GameState*, int);
 290 void game_setup_serve( GameState*);
 291
 292 int score_game(GameState*);
 293 winner_t game_get_winner(const GameState*);
 294
 295 /* Helper functions for the renderer */
 296 const char* format_sets(const GameState*);
 297 const char* format_game(const GameState*);
 298 const char* format_status(const GameState*);
 299
 300 #endif
 301