/*
** patterns.c - <+DESC+>
**
** 2014 - Frank Villaro-Dixon <Frank@Villaro-Dixon.eu>
*/

#include <stdio.h>
#include <stdlib.h>
#include "game.h"
#include "obs.h"



void
pattern_copyleft(struct s_game *g) {
	int times;
	int cleared_face = rand() % g->polygon_type;
	int max_dist = get_max_obs_dist(g);

	for(times = 0; times < g->polygon_type; times++) {
		if(times != cleared_face) {
			struct s_obstacle o;
			o = create_obstacle(SHAPE_THICK, times, 1, max_dist + K_CLEARANCE);
			add_obstacle(g, o);
		}
	}
}

void
pattern_schenille(struct s_game *g) {
	int times;
	int cleared_face = rand() % g->polygon_type;
	int max_dist = get_max_obs_dist(g);

	int dir = 1 - 2 * (rand()%2);

	int leng = rand()%7 + 10;

	for(times = 0; times < leng; times++) {
		struct s_obstacle o;
		o = create_obstacle(SHAPE_THICK,
		                    cleared_face,
		                    1,
		                    max_dist + K_CLEARANCE + times*SHAPE_THICK);
		add_obstacle(g, o);

		cleared_face += dir;
		CLEVER_MODULO(cleared_face, g->polygon_type);
	}
}


void
add_pattern(struct s_game *g) {
	int n_patterns = 2;
	void (*patterns[])(struct s_game *g) = {pattern_copyleft,
	                                        pattern_schenille};

	int choosen_pattern = rand() % n_patterns;

	patterns[choosen_pattern](g);
}