game.h

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007 Thomas Perl <thp@perli.net>
   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
  30 typedef unsigned char bool;
  31 enum {
  32     false,
  33     true
  34 };
  35
  36 typedef struct {
  37     float x;
  38     float y;
  39     float move_x;
  40     float move_y;
  41     float jump;
  42     float dest1;
  43     float dest2;
  44 } Ball;
  45
  46 typedef struct {
  47     float x;
  48     float y;
  49     unsigned char state;
  50     unsigned int score;
  51     unsigned char responsible; /* responsible for the next fault (if any) */
  52 } Player;
  53
  54 typedef struct {
  55     Ball ball;
  56     Ball ground;
  57     Player player1;
  58     Player player2;
  59     float phase;
  60     unsigned int time;
  61     bool was_stopped;
  62 } GameState;
  63
  64 #define PI 3.1415
  65
  66 #define GAME_TICKS 15
  67
  68 #define GROUND_PHASE 0.4
  69 #define PHASE_AMP 3.2
  70
  71 #define BALL_JUMP_MIN 4
  72 #define BALL_JUMP_MAX 10
  73 #define BALL_DEFAULT_SPEED 3.0
  74
  75 #define RACKET_X_MID 15
  76 #define RACKET_Y_MID 24
  77
  78 #define BALL_X_MID 9
  79 #define BALL_Y_MID 9
  80
  81 #define GAME_X_MIN 41.0*2
  82 #define GAME_X_MAX 270.0*2
  83 #define GAME_X_MID ((GAME_X_MIN+GAME_X_MAX)/2)
  84
  85 #define GAME_Y_MIN 155.0
  86 #define GAME_Y_MAX 330.0
  87 #define GAME_Y_MID ((GAME_Y_MIN+GAME_Y_MAX)/2)
  88
  89 #define PLAYER_Y_MIN 0.0
  90 #define PLAYER_Y_MAX 1.0*HEIGHT
  91
  92 #define IS_OFFSCREEN_Y(y) (((y)<0-BALL_Y_MID*2) || ((y)>HEIGHT+BALL_Y_MID*2))
  93 #define IS_OFFSCREEN_X(x) (((x)<0-BALL_X_MID*2) || ((x)>WIDTH+BALL_X_MID*2))
  94 #define IS_OFFSCREEN(x,y) ((IS_OFFSCREEN_X(x)) || (IS_OFFSCREEN_Y(y)))
  95 #define IS_OUT_Y(y) (y<GAME_Y_MIN || y>GAME_Y_MAX)
  96 #define IS_OUT_X(x) (x<GAME_X_MIN || x>GAME_X_MAX)
  97
  98 #define PLAYER_AREA_Y RACKET_Y_MID
  99 #define PLAYER_AREA_X RACKET_X_MID
 100 #define IS_NEAR_Y(py,by) (fabsf(py-by)<PLAYER_AREA_Y)
 101 #define IS_NEAR_X(px,bx) (fabsf(px-bx)<PLAYER_AREA_X)
 102
 103 #define PLAYER_STATE_MAX 5
 104 #define PLAYER_POWERSHOT 6.2
 105
 106 void game();
 107 void render( GameState*);
 108 bool step( GameState*);
 109 void limit_value( float*, float, float);
 110 float get_phase( GameState*);
 111 float get_move_y( GameState*, unsigned char);
 112
 113 #endif
 114