summaryrefslogtreecommitdiff
path: root/src/map/path.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/map/path.c')
-rw-r--r--src/map/path.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/src/map/path.c b/src/map/path.c
deleted file mode 100644
index 7a864ed..0000000
--- a/src/map/path.c
+++ /dev/null
@@ -1,445 +0,0 @@
-// $Id: path.c,v 1.1.1.1 2004/09/10 17:27:00 MagicalTux Exp $
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "map.h"
-#include "battle.h"
-#include "../common/nullpo.h"
-
-#ifdef MEMWATCH
-#include "memwatch.h"
-#endif
-
-//#define PATH_STANDALONETEST
-
-#define MAX_HEAP 150
-struct tmp_path
-{
- short x, y, dist, before, cost;
- char dir, flag;
-};
-#define calc_index(x,y) (((x)+(y)*MAX_WALKPATH) & (MAX_WALKPATH*MAX_WALKPATH-1))
-
-/*==========================================
- * 経路探索補助heap push
- *------------------------------------------
- */
-static void push_heap_path (int *heap, struct tmp_path *tp, int index)
-{
- int i, h;
-
- if (heap == NULL || tp == NULL)
- {
- printf ("push_heap_path nullpo\n");
- return;
- }
-
- heap[0]++;
-
- for (h = heap[0] - 1, i = (h - 1) / 2;
- h > 0 && tp[index].cost < tp[heap[i + 1]].cost; i = (h - 1) / 2)
- heap[h + 1] = heap[i + 1], h = i;
- heap[h + 1] = index;
-}
-
-/*==========================================
- * 経路探索補助heap update
- * costが減ったので根の方へ移動
- *------------------------------------------
- */
-static void update_heap_path (int *heap, struct tmp_path *tp, int index)
-{
- int i, h;
-
- nullpo_retv (heap);
- nullpo_retv (tp);
-
- for (h = 0; h < heap[0]; h++)
- if (heap[h + 1] == index)
- break;
- if (h == heap[0])
- {
- fprintf (stderr, "update_heap_path bug\n");
- exit (1);
- }
- for (i = (h - 1) / 2;
- h > 0 && tp[index].cost < tp[heap[i + 1]].cost; i = (h - 1) / 2)
- heap[h + 1] = heap[i + 1], h = i;
- heap[h + 1] = index;
-}
-
-/*==========================================
- * 経路探索補助heap pop
- *------------------------------------------
- */
-static int pop_heap_path (int *heap, struct tmp_path *tp)
-{
- int i, h, k;
- int ret, last;
-
- nullpo_retr (-1, heap);
- nullpo_retr (-1, tp);
-
- if (heap[0] <= 0)
- return -1;
- ret = heap[1];
- last = heap[heap[0]];
- heap[0]--;
-
- for (h = 0, k = 2; k < heap[0]; k = k * 2 + 2)
- {
- if (tp[heap[k + 1]].cost > tp[heap[k]].cost)
- k--;
- heap[h + 1] = heap[k + 1], h = k;
- }
- if (k == heap[0])
- heap[h + 1] = heap[k], h = k - 1;
-
- for (i = (h - 1) / 2;
- h > 0 && tp[heap[i + 1]].cost > tp[last].cost; i = (h - 1) / 2)
- heap[h + 1] = heap[i + 1], h = i;
- heap[h + 1] = last;
-
- return ret;
-}
-
-/*==========================================
- * 現在の点のcost計算
- *------------------------------------------
- */
-static int calc_cost (struct tmp_path *p, int x1, int y1)
-{
- int xd, yd;
-
- nullpo_retr (0, p);
-
- xd = x1 - p->x;
- if (xd < 0)
- xd = -xd;
- yd = y1 - p->y;
- if (yd < 0)
- yd = -yd;
- return (xd + yd) * 10 + p->dist;
-}
-
-/*==========================================
- * 必要ならpathを追加/修正する
- *------------------------------------------
- */
-static int add_path (int *heap, struct tmp_path *tp, int x, int y, int dist,
- int dir, int before, int x1, int y1)
-{
- int i;
-
- nullpo_retr (0, heap);
- nullpo_retr (0, tp);
-
- i = calc_index (x, y);
-
- if (tp[i].x == x && tp[i].y == y)
- {
- if (tp[i].dist > dist)
- {
- tp[i].dist = dist;
- tp[i].dir = dir;
- tp[i].before = before;
- tp[i].cost = calc_cost (&tp[i], x1, y1);
- if (tp[i].flag)
- push_heap_path (heap, tp, i);
- else
- update_heap_path (heap, tp, i);
- tp[i].flag = 0;
- }
- return 0;
- }
-
- if (tp[i].x || tp[i].y)
- return 1;
-
- tp[i].x = x;
- tp[i].y = y;
- tp[i].dist = dist;
- tp[i].dir = dir;
- tp[i].before = before;
- tp[i].cost = calc_cost (&tp[i], x1, y1);
- tp[i].flag = 0;
- push_heap_path (heap, tp, i);
-
- return 0;
-}
-
-/*==========================================
- * (x,y)が移動不可能地帯かどうか
- * flag 0x10000 遠距離攻撃判定
- *------------------------------------------
- */
-static int can_place (struct map_data *m, int x, int y, int flag)
-{
- int c;
-
- nullpo_retr (0, m);
-
- c = read_gatp (m, x, y);
-
- if (c == 1)
- return 0;
- if (!(flag & 0x10000) && c == 5)
- return 0;
- return 1;
-}
-
-/*==========================================
- * (x0,y0)から(x1,y1)へ1歩で移動可能か計算
- *------------------------------------------
- */
-static int can_move (struct map_data *m, int x0, int y0, int x1, int y1,
- int flag)
-{
- nullpo_retr (0, m);
-
- if (x0 - x1 < -1 || x0 - x1 > 1 || y0 - y1 < -1 || y0 - y1 > 1)
- return 0;
- if (x1 < 0 || y1 < 0 || x1 >= m->xs || y1 >= m->ys)
- return 0;
- if (!can_place (m, x0, y0, flag))
- return 0;
- if (!can_place (m, x1, y1, flag))
- return 0;
- if (x0 == x1 || y0 == y1)
- return 1;
- if (!can_place (m, x0, y1, flag) || !can_place (m, x1, y0, flag))
- return 0;
- return 1;
-}
-
-/*==========================================
- * (x0,y0)から(dx,dy)方向へcountセル分
- * 吹き飛ばしたあとの座標を所得
- *------------------------------------------
- */
-int path_blownpos (int m, int x0, int y0, int dx, int dy, int count)
-{
- struct map_data *md;
-
- if (!map[m].gat)
- return -1;
- md = &map[m];
-
- if (count > 15)
- { // 最大10マスに制限
- if (battle_config.error_log)
- printf ("path_blownpos: count too many %d !\n", count);
- count = 15;
- }
- if (dx > 1 || dx < -1 || dy > 1 || dy < -1)
- {
- if (battle_config.error_log)
- printf ("path_blownpos: illeagal dx=%d or dy=%d !\n", dx, dy);
- dx = (dx >= 0) ? 1 : ((dx < 0) ? -1 : 0);
- dy = (dy >= 0) ? 1 : ((dy < 0) ? -1 : 0);
- }
-
- while ((count--) > 0 && (dx != 0 || dy != 0))
- {
- if (!can_move (md, x0, y0, x0 + dx, y0 + dy, 0))
- {
- int fx = (dx != 0 && can_move (md, x0, y0, x0 + dx, y0, 0));
- int fy = (dy != 0 && can_move (md, x0, y0, x0, y0 + dy, 0));
- if (fx && fy)
- {
- if (rand () & 1)
- dx = 0;
- else
- dy = 0;
- }
- if (!fx)
- dx = 0;
- if (!fy)
- dy = 0;
- }
- x0 += dx;
- y0 += dy;
- }
- return (x0 << 16) | y0;
-}
-
-/*==========================================
- * path探索 (x0,y0)->(x1,y1)
- *------------------------------------------
- */
-int path_search (struct walkpath_data *wpd, int m, int x0, int y0, int x1,
- int y1, int flag)
-{
- int heap[MAX_HEAP + 1];
- struct tmp_path tp[MAX_WALKPATH * MAX_WALKPATH];
- int i, rp, x, y;
- struct map_data *md;
- int dx, dy;
-
- nullpo_retr (0, wpd);
-
- if (!map[m].gat)
- return -1;
- md = &map[m];
- if (x1 < 0 || x1 >= md->xs || y1 < 0 || y1 >= md->ys
- || (i = read_gatp (md, x1, y1)) == 1 || i == 5)
- return -1;
-
- // easy
- dx = (x1 - x0 < 0) ? -1 : 1;
- dy = (y1 - y0 < 0) ? -1 : 1;
- for (x = x0, y = y0, i = 0; x != x1 || y != y1;)
- {
- if (i >= sizeof (wpd->path))
- return -1;
- if (x != x1 && y != y1)
- {
- if (!can_move (md, x, y, x + dx, y + dy, flag))
- break;
- x += dx;
- y += dy;
- wpd->path[i++] =
- (dx < 0) ? ((dy > 0) ? 1 : 3) : ((dy < 0) ? 5 : 7);
- }
- else if (x != x1)
- {
- if (!can_move (md, x, y, x + dx, y, flag))
- break;
- x += dx;
- wpd->path[i++] = (dx < 0) ? 2 : 6;
- }
- else
- { // y!=y1
- if (!can_move (md, x, y, x, y + dy, flag))
- break;
- y += dy;
- wpd->path[i++] = (dy > 0) ? 0 : 4;
- }
- if (x == x1 && y == y1)
- {
- wpd->path_len = i;
- wpd->path_pos = 0;
- wpd->path_half = 0;
- return 0;
- }
- }
- if (flag & 1)
- return -1;
-
- memset (tp, 0, sizeof (tp));
-
- i = calc_index (x0, y0);
- tp[i].x = x0;
- tp[i].y = y0;
- tp[i].dist = 0;
- tp[i].dir = 0;
- tp[i].before = 0;
- tp[i].cost = calc_cost (&tp[i], x1, y1);
- tp[i].flag = 0;
- heap[0] = 0;
- push_heap_path (heap, tp, calc_index (x0, y0));
- while (1)
- {
- int e = 0, fromdir;
-
- if (heap[0] == 0)
- return -1;
- rp = pop_heap_path (heap, tp);
- x = tp[rp].x;
- y = tp[rp].y;
- if (x == x1 && y == y1)
- {
- int len, j;
-
- for (len = 0, i = rp; len < 100 && i != calc_index (x0, y0);
- i = tp[i].before, len++);
- if (len == 100 || len >= sizeof (wpd->path))
- return -1;
- wpd->path_len = len;
- wpd->path_pos = 0;
- wpd->path_half = 0;
- for (i = rp, j = len - 1; j >= 0; i = tp[i].before, j--)
- wpd->path[j] = tp[i].dir;
-
- return 0;
- }
- fromdir = tp[rp].dir;
- if (can_move (md, x, y, x + 1, y - 1, flag))
- e += add_path (heap, tp, x + 1, y - 1, tp[rp].dist + 14, 5, rp,
- x1, y1);
- if (can_move (md, x, y, x + 1, y, flag))
- e += add_path (heap, tp, x + 1, y, tp[rp].dist + 10, 6, rp, x1,
- y1);
- if (can_move (md, x, y, x + 1, y + 1, flag))
- e += add_path (heap, tp, x + 1, y + 1, tp[rp].dist + 14, 7, rp,
- x1, y1);
- if (can_move (md, x, y, x, y + 1, flag))
- e += add_path (heap, tp, x, y + 1, tp[rp].dist + 10, 0, rp, x1,
- y1);
- if (can_move (md, x, y, x - 1, y + 1, flag))
- e += add_path (heap, tp, x - 1, y + 1, tp[rp].dist + 14, 1, rp,
- x1, y1);
- if (can_move (md, x, y, x - 1, y, flag))
- e += add_path (heap, tp, x - 1, y, tp[rp].dist + 10, 2, rp, x1,
- y1);
- if (can_move (md, x, y, x - 1, y - 1, flag))
- e += add_path (heap, tp, x - 1, y - 1, tp[rp].dist + 14, 3, rp,
- x1, y1);
- if (can_move (md, x, y, x, y - 1, flag))
- e += add_path (heap, tp, x, y - 1, tp[rp].dist + 10, 4, rp, x1,
- y1);
- tp[rp].flag = 1;
- if (e || heap[0] >= MAX_HEAP - 5)
- return -1;
- }
- return -1;
-}
-
-#ifdef PATH_STANDALONETEST
-char gat[64][64] = {
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
- {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
- {0, 0, 0, 0, 1, 0, 0, 0, 0, 0},
-};
-
-struct map_data map[1];
-
-/*==========================================
- * 経路探索ルーチン単体テスト用main関数
- *------------------------------------------
- */
-void main (int argc, char *argv[])
-{
- struct walkpath_data wpd;
-
- map[0].gat = gat;
- map[0].xs = 64;
- map[0].ys = 64;
-
- path_search (&wpd, 0, 3, 4, 5, 4);
- path_search (&wpd, 0, 5, 4, 3, 4);
- path_search (&wpd, 0, 6, 4, 3, 4);
- path_search (&wpd, 0, 7, 4, 3, 4);
- path_search (&wpd, 0, 4, 3, 4, 5);
- path_search (&wpd, 0, 4, 2, 4, 5);
- path_search (&wpd, 0, 4, 1, 4, 5);
- path_search (&wpd, 0, 4, 5, 4, 3);
- path_search (&wpd, 0, 4, 6, 4, 3);
- path_search (&wpd, 0, 4, 7, 4, 3);
- path_search (&wpd, 0, 7, 4, 3, 4);
- path_search (&wpd, 0, 8, 4, 3, 4);
- path_search (&wpd, 0, 9, 4, 3, 4);
- path_search (&wpd, 0, 10, 4, 3, 4);
- path_search (&wpd, 0, 11, 4, 3, 4);
- path_search (&wpd, 0, 12, 4, 3, 4);
- path_search (&wpd, 0, 13, 4, 3, 4);
- path_search (&wpd, 0, 14, 4, 3, 4);
- path_search (&wpd, 0, 15, 4, 3, 4);
- path_search (&wpd, 0, 16, 4, 3, 4);
- path_search (&wpd, 0, 17, 4, 3, 4);
- path_search (&wpd, 0, 18, 4, 3, 4);
-}
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-06 19:14:51 +0000