rotagon/game.h

/*
** game.h - Game data structure
**
** 2014 - Frank Villaro-Dixon <Frank@Villaro-Dixon.eu>
*/

#ifndef GAME_H
#define GAME_H

#include "SDL/SDL.h"
#include "SDL_prims.h"

#define SCREEN_WIDTH 1000
#define SCREEN_HEIGHT 700
#define SCREEN_DIAGONAL (sqrt(SCREEN_HEIGHT*SCREEN_HEIGHT + SCREEN_WIDTH*SCREEN_WIDTH)/2)

#define CLEVER_MODULO(n, mod) do { while(n < 0) { n += mod; };;;; n %= mod; } while(0);


#define DEC_COLOR 0x00020202
#define DIVIDE_COLOR(color, times) (((color) & 0x00ff0000 / (times)) | ((color) & 0x0000ff00 / (times)) | ((color) & 0x000000ff / (times)))

////POLYGON
#define POLYGON_SIZE 50
#define POLYGON_THICK 15
//SHAPES
#define SHAPE_TRIANGLE 3
#define SHAPE_SQUARE 4
#define SHAPE_PENTAGON 5
#define SHAPE_HEXAGON 6

#define SHAPE_THICK 60
#define DFT_OBS_SPEED (SHAPE_THICK /  15)

#define CURSOR_DIST (POLYGON_SIZE +  POLYGON_THICK + 20)
#define CURSOR_DEG_FRAME (24 / g->polygon_type)
#define ANGLE_MAX 3600

#define OFFSET_POINT(p) {p.x += SCREEN_WIDTH/2; p.y += SCREEN_HEIGHT/2;}
#define MAX(a, b) (a < b) ? (b) : (a)

#define TO_DEG(x) (x*ANGLE_MAX/360)
#define TO_RAD(x) (x * 2 * M_PI / ANGLE_MAX)


struct s_obstacle {
	int used;
	int thick;
	int face;
	int distance;
	int speed;
#define K_CLEARANCE (SHAPE_THICK * 5)
};

struct s_game {
	#define CURSOR_POS_MAX 255
	int cursor_angle; //relative to the polygon center's referential
	int general_rotation;
	float sexual_pulsation;
	int polygon_type; //Shape
	int color;
	int actual_speed;
	int counter;

	SDL_Surface *screen;
	Uint8 *keys;

#define NUM_OBS 100
	struct s_obstacle obs[NUM_OBS];
	int num_obs;
};



void
init_game(struct s_game *g);

int
get_face_from_cursor(struct s_game *g);

//ugly !
void
(*get_polygon_drawer(struct s_game *g))
(struct s_game *, int faceno, int dist, int thick, int col);

SDL_Point
to_screen_coords(struct s_game *g, SDL_Point p);

void
draw_game(struct s_game *g);

void
get_keys(struct s_game *g);

void
change_game_color(struct s_game *g);


#endif /* ndef GAME_H */