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
  34 #define SETS_TO_WIN 3
  35
  36 #define MAXPLAYERS 2
  37
  38 #ifdef DELUXE_EDITION
  39 #  define BALL_STATES 16
  40 #else
  41 #  define BALL_STATES 4
  42 #endif
  43
  44 typedef unsigned char referee_t;
  45 enum {
  46     REFEREE_NORMAL,
  47     REFEREE_OUT,
  48     REFEREE_PLAYER1,
  49     REFEREE_PLAYER2,
  50     REFEREE_COUNT
  51 };
  52
  53 typedef unsigned char winner_t;
  54 enum {
  55     WINNER_NONE,
  56     WINNER_PLAYER1,
  57     WINNER_PLAYER2
  58 };
  59
  60 typedef unsigned char soundevent_t;
  61 enum {
  62     SOUND_EVENT_NONE     = 0<<0,
  63     SOUND_EVENT_GROUND   = 1<<0,
  64     SOUND_EVENT_OUT      = 1<<1,
  65     SOUND_EVENT_APPLAUSE = 1<<2,
  66     SOUND_EVENT_RACKET   = 1<<3
  67 };
  68 #define SOUND_EVENT_COUNT 4
  69
  70 typedef struct {
  71     const char* name;
  72     const char* area;
  73     const char* city;
  74     image_id court_type;
  75     unsigned int max_visitors;
  76     const char* court_type_name;
  77     image_id photo;
  78     unsigned int photo_frames;
  79     unsigned int worldmap_x;
  80     unsigned int worldmap_y;
  81     bool has_referee;
  82     bool night;
  83     unsigned int rain;
  84     unsigned int fog;
  85 } Location;
  86
  87 #define BALL_RESTITUTION .6
  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     bool ground_hit;
  97     char last_hit_by;
  98     bool inhibit_gravity;
  99 } Ball;
 100
 101 typedef struct {
 102     InputDevice* input;
 103     char input_device_index;
 104     float x;
 105     float y;
 106     float power;
 107     bool use_power;
 108     unsigned char score;
 109     unsigned char desire;
 110     bool type; /* is this player ai-controlled or human? */
 111     char game; /* score for the current game */
 112     unsigned char sets[SETS_TO_WIN*2]; /* score for each set */
 113     float accelerate; /* a value [0..1] how fast the user accelerates */
 114 } Player;
 115
 116 enum {
 117     PLAYER_TYPE_HUMAN,
 118     PLAYER_TYPE_AI
 119 };
 120
 121 enum {
 122     DESIRE_NORMAL,
 123     DESIRE_TOPSPIN,
 124     DESIRE_SMASH,
 125     DESIRE_MAX
 126 };
 127
 128 /* wait 2 seconds before we score the game */
 129 #define SCORING_DELAY 1000
 130
 131 typedef unsigned char scoreevent_t;
 132 enum {
 133     SCORE_UNDECIDED,
 134     SCORE_EVENT_NET,
 135     SCORE_EVENT_OUT,
 136     SCORE_EVENT_GROUND_INVALID,
 137     SCORE_EVENT_GROUND_VALID,
 138     SCORE_EVENT_OFFSCREEN,
 139     SCORE_EVENT_MAX
 140 };
 141
 142 typedef unsigned char eventcounter_t;
 143 enum {
 144     EVENTCOUNTER_RENDERSTATE_START = 0,
 145     EVENTCOUNTER_GAMESTATE_START = 1
 146 };
 147
 148 typedef unsigned char statusmessage_t;
 149 enum {
 150     STATUSMSG_NONE,
 151     STATUSMSG_WELCOME,
 152     STATUSMSG_DEFAULT,
 153     STATUSMSG_NET,
 154     STATUSMSG_OUT,
 155     STATUSMSG_FAULT,
 156     STATUSMSG_P1SCORES,
 157     STATUSMSG_P2SCORES,
 158     STATUSMSG_VOLLEY,
 159     STATUSMSG_DIDNTCATCH
 160 };
 161
 162 typedef struct {
 163     const Location* location;
 164     char current_location; /* index of loc. in global location table */
 165     Ball ball;
 166     Player players[MAXPLAYERS];
 167     unsigned char serving_player;
 168     referee_t referee;
 169     unsigned char current_set;
 170     winner_t winner;
 171     soundevent_t sound_events;
 172     scoreevent_t score_event;
 173     unsigned char score_time;
 174     eventcounter_t ec_game;
 175     eventcounter_t ec_sets;
 176     statusmessage_t status_message;
 177 } GameState;
 178
 179 typedef struct {
 180     soundevent_t sound_events;
 181     referee_t referee;
 182     eventcounter_t ec_game;
 183     eventcounter_t ec_sets;
 184     statusmessage_t status_message;
 185     const char* text_status;
 186     const char* text_game;
 187     const char* text_sets;
 188 } RenderState;
 189
 190 #define PI 3.1415
 191
 192 #define GAME_TICKS 15
 193
 194 #define GRAVITY -.03
 195
 196 #define RACKET_X_MID 15
 197 #define RACKET_Y_MID 24
 198
 199 #define BALL_X_MID 9
 200 #define BALL_Y_MID 9
 201
 202 #define GAME_X_MIN 41.0*2
 203 #define GAME_X_MAX 270.0*2
 204 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 205
 206 #define GAME_Y_MIN 155.0
 207 #define GAME_Y_MAX 330.0
 208 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 209
 210 /* net size and collision detection */
 211 #define NET_X 320
 212 #define NET_Y 107
 213 #define NET_WIDTH 5
 214 #define NET_HEIGHT 273
 215 #define NET_TALLNESS 5
 216 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 217 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 218 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 219 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 220
 221 /* "in field" coordinates (left and right part of court) */
 222 #define FIELD_LEFT_X 119
 223 #define FIELD_LEFT_WIDTH 202
 224 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 225 #define FIELD_RIGHT_X 326
 226 #define FIELD_RIGHT_WIDTH 202
 227 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 228
 229 /* coordinates for one-vs-one game */
 230 #define FIELD_SINGLE_Y 154
 231 #define FIELD_SINGLE_HEIGHT 178
 232 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 233
 234 /* coordinates for two-vs-two game */
 235 #define FIELD_DOUBLE_Y 115
 236 #define FIELD_DOUBLE_HEIGHT 256
 237 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 238
 239 /* player = player that last hit the ball, */
 240 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 241 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 242
 243 #define PLAYER_Y_MIN 0
 244 #define PLAYER_Y_MAX HEIGHT
 245
 246 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 247 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 248 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 249
 250 #define PLAYER_AREA_Y RACKET_Y_MID
 251 #define PLAYER_AREA_X RACKET_X_MID
 252 #define IS_NEAR_Y(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y)
 253 #define IS_NEAR_Y_AI(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y/3.5)
 254 #define IS_NEAR_X(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X)
 255 #define IS_NEAR_X_AI(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X*2.)
 256
 257 #define PLAYER_MOVE_Y 5.0
 258 #define PLAYER_ACCEL_DEFAULT 0.2
 259 #define PLAYER_ACCEL_INCREASE 1.2
 260
 261 #define POWER_UP_FACTOR 1.1
 262 #define POWER_DOWN_FACTOR 0.9
 263 #define PLAYER_POWER_MAX 100
 264
 265 #define PLAYER(s, num) (s->players[num-1])
 266
 267 /* Comment out the following #define to enable mouse control */
 268 #define ENABLE_MOUSE
 269
 270 /* GameState handling*/
 271 GameState *gamestate_new();
 272
 273 int gamestate_save(GameState* s, const char* filename);
 274 GameState* gamestate_load(const char* filename);
 275
 276 /* Game module functions */
 277 void gameloop(GameState*, TennixNet*);
 278 void step(GameState*);
 279 bool handle_input(GameState*, TennixNet*);
 280 void render(const GameState*, RenderState*);
 281 float get_move_y( GameState*, unsigned char);
 282 void input_human(GameState*, int);
 283 void input_ai(GameState*, int);
 284 void game_setup_serve( GameState*);
 285
 286 int score_game(GameState*);
 287 winner_t game_get_winner(const GameState*);
 288
 289 /* Helper functions for the renderer */
 290 const char* format_sets(const GameState*);
 291 const char* format_game(const GameState*);
 292 const char* format_status(const GameState*);
 293
 294 #endif
 295