X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=modelchecker%2Fsokoban.c;h=465c6283978327ba97007b1a01d2481352c2ab20;hb=59b2b66a7c7b6585ebd30e8c530b9f826bcc70e9;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=c285a7eaf0740e0d3d83cd0cdf6ca87f81c11431;p=mc1516pa.git

diff --git a/modelchecker/sokoban.c b/modelchecker/sokoban.c
index e69de29..465c628 100644
--- a/modelchecker/sokoban.c
+++ b/modelchecker/sokoban.c
@@ -0,0 +1,115 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "uthash.h"
+#include "sokoban.h"
+
+sokoban_screen *add_coord(int x, int y, sokoban_tile tile, sokoban_screen *screen)
+{
+	sokoban_screen *r = NULL;
+
+	r = (sokoban_screen *)malloc(sizeof(sokoban_screen));
+	memset(r, 0, sizeof(sokoban_screen));
+	r->coord.x = x;
+	r->coord.y = y;
+	r->tile = tile;
+	HASH_ADD(hh, screen, coord, sizeof(record_key), r);
+	return screen;
+}
+
+sokoban_screen *get_coord(int x, int y, sokoban_screen *screen)
+{
+	sokoban_screen k, *r = NULL;
+	memset(&k, 0, sizeof(sokoban_screen));
+	k.coord.x = x;
+	k.coord.y = y;
+	HASH_FIND(hh, screen, &k.coord, sizeof(record_key), r);
+	return r;
+}
+
+sokoban_screen *delete_coord(int x, int y, sokoban_screen *screen)
+{
+	sokoban_screen *r = NULL;
+	r = get_coord(x, y, screen);
+	if (r) HASH_DEL(screen, r);
+	return screen;
+}
+
+void sokoban_print(sokoban_screen *screen)
+{
+	sokoban_screen *r;
+	for(r=screen; r != NULL; r = (sokoban_screen *)(r->hh.next)){
+		switch(r->tile){
+		case FREE: printf("x = %d y = %d FREE\n", r->coord.x, r->coord.y); break;
+		case WALL: printf("x = %d y = %d WALL\n", r->coord.x, r->coord.y); break;
+		case BOX: printf("x = %d y = %d BOX\n", r->coord.x, r->coord.y); break;
+		case TARGET: printf("x = %d y = %d TARGET\n", r->coord.x, r->coord.y); break;
+		case AGENT: printf("x = %d y = %d AGENT\n", r->coord.x, r->coord.y); break;
+		case TARGAGENT: printf("x = %d y = %d TARGAGENT\n", r->coord.x, r->coord.y); break;
+		case TARGBOX: printf("x = %d y = %d TARGBOX\n", r->coord.x, r->coord.y); break;
+		}
+	}
+}
+
+sokoban_screen *sokoban_shrink(int x, int y, sokoban_screen *screen, sokoban_screen *newscreen)
+{
+	sokoban_screen *c, *nc = NULL;
+	c = get_coord(x, y, screen);
+	if (c) {
+		nc = get_coord(c->coord.x, c->coord.y, newscreen);
+		if (c->tile != WALL && nc == NULL) {
+			newscreen = add_coord(x, y, c->tile, newscreen);
+			newscreen = sokoban_shrink(x-1, y, screen, newscreen);
+			newscreen = sokoban_shrink(x+1, y, screen, newscreen);
+			newscreen = sokoban_shrink(x, y-1, screen, newscreen);
+			newscreen = sokoban_shrink(x, y+1, screen, newscreen);
+		}
+	}
+	return newscreen;
+}
+
+void sokoban_free(sokoban_screen *screen)
+{
+	sokoban_screen *r, *tmp = NULL;
+	HASH_ITER(hh, screen, r, tmp) {
+		HASH_DEL(screen, r);
+		free(r);
+	}
+}
+
+sokoban_screen *parse_screen(FILE *stream)
+{
+	int buffer, x, y, agent_x, agent_y;
+	x = 0;
+	y = 0;
+	agent_x = 0;
+	agent_y = 0;
+	sokoban_screen *screen = NULL;
+	while((buffer = fgetc(stream)) != EOF){
+		if (buffer == '\n'){
+			x = 0;
+			y++;
+		}
+		else {
+			switch(buffer) {
+			case ' ': screen = add_coord(x, y, FREE, screen); break;
+			case '@':
+				screen = add_coord(x, y, AGENT, screen);
+				agent_x = x;
+				agent_y = y;
+				break;
+			case '.': screen = add_coord(x, y, TARGET, screen); break;
+			case '#': screen = add_coord(x, y, WALL, screen); break;
+			case '$': screen = add_coord(x, y, BOX, screen); break;
+			case '*': screen = add_coord(x, y, TARGBOX, screen); break;
+			case '+': screen = add_coord(x, y, TARGAGENT, screen); break;
+			default: return NULL;
+			}
+			x++;
+		}
+	}
+	sokoban_screen *newscreen = NULL;
+	newscreen = sokoban_shrink(agent_x, agent_y, screen, newscreen);
+	//sokoban_print(screen); //unshrinked screen
+	sokoban_free(screen);
+	return newscreen;
+}