npc : Suivi sans chemin fonctionel (sans collisions)

src/game.c

@@ -269,8 +269,8 @@ void game_get_inputs(Game *game) {
             if(mynpc) {
                 mynpc->curx = (player->x << PRECISION) / PXSIZE;
                 mynpc->cury = (player->y << PRECISION) / PXSIZE;
-                mynpc->x = player->x;
+                mynpc->x = 0;
-                mynpc->y = player->x;
+                mynpc->y = 0;
                 mynpc->hasPath = 0;
                 mynpc->owns_path = false;
                 mynpc->face = 0;

src/npc.c

@@ -74,7 +74,7 @@ int npc_clear_path(NPC *npc) {
     return 0;
 }
 
-int npc_append_path(uint16_t x, uint16_t y, NPC *npc) {
+int npc_append_path(int16_t x, int16_t y, NPC *npc) {
     npc->xpath = realloc(npc->xpath, npc->path_length * 2 + 2);
     npc->ypath = realloc(npc->ypath, npc->path_length * 2 + 2);
     if(npc->xpath == NULL || npc->ypath == NULL)
@@ -91,6 +91,50 @@ void as_clean(uint8_t *visited, uint8_t *gscore, uint8_t *fscore) {
     free(fscore);
 }
 
+int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc){
+    uint8_t *map = full_map->walkable;
+    uint32_t w = full_map->w;
+    uint32_t h = full_map->h;
+    uint32_t sx = npc_from_curxy(npc->curx);
+    uint32_t sy = npc_from_curxy(npc->cury);
+    dest_x /= PXSIZE;
+    dest_y /= PXSIZE;
+
+    if(dest_x < 0 || dest_y < 0 || dest_x  >= w*T_WIDTH || dest_y >= h*T_HEIGHT)
+        return 2;
+
+    /*if(map[dest_y*w + dest_x])
+        return 2;
+    if(map[sy*w + sx])
+        return 2;*/
+
+    if(!npc->owns_path || npc->path_length > 64)
+        npc_clear_path(npc);
+
+    /*int bx;
+    int by;
+    int bscore = 0x7FFFFFFF;
+
+    for(int i = sx-1; i < sx+2; i++){
+        for(int j = sy-1; j < sy+2; j++){
+            int tscore = (dest_x-sx)*(dest_x-sx) + (dest_y-sy)*(dest_y-sy);
+            if(tscore < bscore){
+                bscore = tscore;
+                bx = i;
+                by = j;
+            }
+        }
+    }
+
+    if(bscore == 0x7FFFFFFF) return 3;*/
+
+    if(npc_append_path(dest_x,dest_y, npc))
+        return 1;
+
+    npc->hasPath = true;
+    return 0;
+}
+
 int as_reconstruct_path(int16_t *came_from, int w, int h, int16_t start,
                         int16_t dest, bool is_alloc, NPC *npc) {
     if(npc_clear_path(npc))
@@ -132,8 +176,8 @@ int as_reconstruct_path(int16_t *came_from, int w, int h, int16_t start,
         npc->ypath[npc->path_length - i - 1] = ty;
     }*/
 
-    if(is_alloc)
+    /*if(is_alloc)
-        free(came_from);
+        free(came_from);*/
 
     npc->hasPath = true;
 
@@ -141,8 +185,8 @@ int as_reconstruct_path(int16_t *came_from, int w, int h, int16_t start,
 
 as_recons_fail:
 
-    if(is_alloc)
+    /*if(is_alloc)
-        free(came_from);
+        free(came_from);*/
 
     return 1;
 }
@@ -150,8 +194,8 @@ as_recons_fail:
 uint32_t xyram = 0xe500e000 + 32;
 
 /* Custom a* implemetation
- * Unoptimized, may become an issue */
+ * Borked, use  npc_pathfind instead*/
-int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
+int __npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
     int32_t i, j;
 
     int32_t w = full_map->w/T_WIDTH/PXSIZE;
@@ -180,7 +224,7 @@ int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
 
     bool is_alloc;
 
-    if(1 || isSH3() || w * h * 5 > 1024 * 15) {
+    if(isSH3() || w * h * 5 > 1024 * 15) {
         is_alloc = true;
 
         visited = malloc(w * h);
@@ -242,9 +286,9 @@ int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
             bscore = fscore[i];
         }
         if(bx == dest_x && by == dest_y) {
-            as_clean(visited, gscore, fscore);
+            if(is_alloc) as_clean(visited, gscore, fscore);
             return 0; /*as_reconstruct_path(came_from, w, h, spos,
-                                        dest_y * w + dest_x, npc)*/
+                                        dest_y * w + dest_x, is_alloc npc)*/
         }
 
         visited[by * w + bx] = 1;
@@ -274,9 +318,10 @@ int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
         }
     }
 
+    if(is_alloc){
         as_clean(visited, gscore, fscore);
-
         free(came_from);
+    }
     return 3;
 }
 

src/npc.h

@@ -10,6 +10,10 @@
 /*Maximum iterations before the pathfinding considers the target unreacheable*/
 #define PATHFIND_MAX_ITER 64
 
+#define npc_from_curxy(a) (((a)>>PRECISION)/PXSIZE)
+
+#define npc_to_curxy(a) (((a)*PXSIZE)<<PRECISION)
+
 enum {
 
     NPC_NONE = 0,
@@ -41,7 +45,7 @@ int npc_clear_path(NPC *npc);
 /* Adds point x,y to the path of npc
  * Won't work on static NPCs, use npc_clear_path before or make them on the
  * heap */
-int npc_append_path(uint16_t x, uint16_t y, NPC *npc);
+int npc_append_path(int16_t x, int16_t y, NPC *npc);
 
 /* Clears the NPCs path and creates a new one going to dest,
  * avoiding non-walkable tiles