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 enum {
  50     REFEREE_NORMAL,
  51     REFEREE_OUT,
  52     REFEREE_PLAYER1,
  53     REFEREE_PLAYER2,
  54     REFEREE_COUNT
  55 };
  56
  57 enum {
  58     WINNER_NONE,
  59     WINNER_PLAYER1,
  60     WINNER_PLAYER2
  61 };
  62
  63 enum {
  64     SOUND_EVENT_GROUND   = 1<<0,
  65     SOUND_EVENT_OUT      = 1<<1,
  66     SOUND_EVENT_APPLAUSE = 1<<2,
  67     SOUND_EVENT_RACKET   = 1<<3
  68 };
  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 } Location;
  83
  84 typedef struct {
  85     float x;
  86     float y;
  87     float z;
  88     float move_x;
  89     float move_y;
  90     float move_z;
  91     float restitution;
  92     bool ground_hit;
  93     int last_hit_by;
  94     bool inhibit_gravity;
  95 } Ball;
  96
  97 typedef struct {
  98     InputDevice* input;
  99     int input_device_index;
 100     float x;
 101     float y;
 102     float power;
 103     float power_up_factor;
 104     float power_down_factor;
 105     bool use_power;
 106     unsigned int score;
 107     unsigned char desire;
 108     bool type; /* is this player ai-controlled or human? */
 109     float ball_dest; /* prospective y-position of ball */
 110     bool state_locked; /* enabled when user keeps pressing the "hit" key */
 111     int game; /* score for the current game */
 112     int sets[SETS_TO_WIN*2]; /* score for each set */
 113     int mouse_x; /* x position of mouse */
 114     int mouse_y; /* y position of mouse */
 115     float accelerate; /* a value [0..1] how fast the user accelerates */
 116     bool mouse_locked; /* on start, ignore unpressed mouse state */
 117 } Player;
 118
 119 enum {
 120     PLAYER_TYPE_HUMAN,
 121     PLAYER_TYPE_AI
 122 };
 123
 124 enum {
 125     DESIRE_NORMAL,
 126     DESIRE_TOPSPIN,
 127     DESIRE_SMASH,
 128     DESIRE_MAX
 129 };
 130
 131 /* wait 2 seconds before we score the game */
 132 #define SCORING_DELAY 2000
 133
 134 enum {
 135     SCORE_UNDECIDED,
 136     SCORE_EVENT_NET,
 137     SCORE_EVENT_OUT,
 138     SCORE_EVENT_GROUND_INVALID,
 139     SCORE_EVENT_GROUND_VALID,
 140     SCORE_EVENT_OFFSCREEN,
 141     SCORE_EVENT_MAX
 142 };
 143
 144 typedef struct {
 145     Location* location;
 146     int current_location; /* index of loc. in global location table */
 147     Ball ball;
 148     Player players[MAXPLAYERS];
 149     Uint32 time;
 150     bool was_stopped;
 151     unsigned int serving_player;
 152     const char* status;
 153     char game_score_str[50];
 154     char sets_score_str[50];
 155     unsigned char referee;
 156     unsigned int current_set;
 157     int winner;
 158     bool is_over;
 159     image_id displayed_court_type;
 160     unsigned int sound_events;
 161     float joystick_y;
 162     float joystick_x;
 163     unsigned char joystick_a;
 164     unsigned int rain;
 165     unsigned int fog;
 166     bool night;
 167     int wind;
 168     unsigned int windtime;
 169     Uint32 timelimit;
 170     bool text_changed;
 171     unsigned char old_referee;
 172     int score_event;
 173     unsigned int score_time;
 174 } GameState;
 175
 176 #define PI 3.1415
 177
 178 #define GAME_TICKS 15
 179
 180 #define GRAVITY -.03
 181
 182 #define RACKET_X_MID 15
 183 #define RACKET_Y_MID 24
 184
 185 #define BALL_X_MID 9
 186 #define BALL_Y_MID 9
 187
 188 #define GAME_X_MIN 41.0*2
 189 #define GAME_X_MAX 270.0*2
 190 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
 191
 192 #define GAME_Y_MIN 155.0
 193 #define GAME_Y_MAX 330.0
 194 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
 195
 196 /* net size and collision detection */
 197 #define NET_X 320
 198 #define NET_Y 107
 199 #define NET_WIDTH 5
 200 #define NET_HEIGHT 273
 201 #define NET_TALLNESS 5
 202 #define IN_NET_X(x) (x+BALL_X_MID >= NET_X && x-BALL_X_MID <= NET_X+NET_WIDTH)
 203 #define IN_NET_Y(y) (y >= NET_Y && y <= NET_Y+NET_HEIGHT)
 204 #define NET_COLLISION(x, y, z) (z<=NET_TALLNESS && IN_NET_X(x) && IN_NET_Y(y))
 205 #define NET_COLLISION_BALL(b) (NET_COLLISION(b.x, b.y, b.z))
 206
 207 /* "in field" coordinates (left and right part of court) */
 208 #define FIELD_LEFT_X 119
 209 #define FIELD_LEFT_WIDTH 202
 210 #define FIELD_LEFT_IS_VALID(x) (x >= FIELD_LEFT_X && x <= FIELD_LEFT_X+FIELD_LEFT_WIDTH)
 211 #define FIELD_RIGHT_X 326
 212 #define FIELD_RIGHT_WIDTH 202
 213 #define FIELD_RIGHT_IS_VALID(x) (x >= FIELD_RIGHT_X && x <= FIELD_RIGHT_X+FIELD_RIGHT_WIDTH)
 214
 215 /* coordinates for one-vs-one game */
 216 #define FIELD_SINGLE_Y 154
 217 #define FIELD_SINGLE_HEIGHT 178
 218 #define FIELD_SINGLE_IS_VALID(y) (y >= FIELD_SINGLE_Y && y <= FIELD_SINGLE_Y+FIELD_SINGLE_HEIGHT)
 219
 220 /* coordinates for two-vs-two game */
 221 #define FIELD_DOUBLE_Y 115
 222 #define FIELD_DOUBLE_HEIGHT 256
 223 #define FIELD_DOUBLE_IS_VALID(y) (y >= FIELD_DOUBLE_Y && y <= FIELD_DOUBLE_Y+FIELD_DOUBLE_HEIGHT)
 224
 225 /* player = player that last hit the ball, */
 226 #define GROUND_IS_VALID(player, x, y) (FIELD_SINGLE_IS_VALID(y) && ((player==1)?(FIELD_RIGHT_IS_VALID(x)):(FIELD_LEFT_IS_VALID(x))))
 227 #define IS_OUT(x, y) (!(FIELD_SINGLE_IS_VALID(y) && (FIELD_RIGHT_IS_VALID(x) || FIELD_LEFT_IS_VALID(x))))
 228
 229 #define PLAYER_Y_MIN 0
 230 #define PLAYER_Y_MAX HEIGHT
 231
 232 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
 233 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
 234 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
 235
 236 #define PLAYER_AREA_Y RACKET_Y_MID
 237 #define PLAYER_AREA_X RACKET_X_MID
 238 #define IS_NEAR_Y(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y)
 239 #define IS_NEAR_Y_AI(py,by) (fabsf((py)-(by))<(float)PLAYER_AREA_Y/3.5)
 240 #define IS_NEAR_X(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X)
 241 #define IS_NEAR_X_AI(px,bx) (fabsf((px)-(bx))<(float)PLAYER_AREA_X*2.)
 242
 243 #define PLAYER_MOVE_Y 5.0
 244 #define PLAYER_ACCEL_DEFAULT 0.2
 245 #define PLAYER_ACCEL_INCREASE 1.2
 246
 247 #define POWER_UP_FACTOR 1.1
 248 #define POWER_DOWN_FACTOR 0.9
 249 #define PLAYER_POWER_MAX 100
 250
 251 #define MOVE_Y_SEED 3
 252
 253 #define PLAYER(s, num) (s->players[num-1])
 254
 255 /* Comment out the following #define to enable mouse control */
 256 #define ENABLE_MOUSE
 257
 258 /* GameState handling*/
 259 GameState *gamestate_new();
 260
 261 int gamestate_save(GameState* s, const char* filename);
 262 GameState* gamestate_load(const char* filename);
 263
 264 /* Game module functions */
 265 void gameloop(GameState*);
 266 void render( GameState*);
 267 bool step( GameState*);
 268 void limit_value( float*, float, float);
 269 float get_move_y( GameState*, unsigned char);
 270 void input_human(GameState*, int);
 271 void input_ai(GameState*, int);
 272 void game_setup_serve( GameState*);
 273
 274 int score_game(GameState*);
 275 char* format_sets( GameState*);
 276 char* format_game( GameState*);
 277 char* format_status( GameState*);
 278 int game_get_winner( GameState*);
 279
 280 #endif
 281