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npc : Suivi sans chemin fonctionel (sans collisions)

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attilavs2 2024-08-05 23:59:20 +02:00
parent 7094d4b4e3
commit 1767643da1
3 changed files with 65 additions and 16 deletions
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4
src/game.c
View file

@ -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->y = player->x;
mynpc->x = 0;
mynpc->y = 0;
mynpc->hasPath = 0;
mynpc->owns_path = false;
mynpc->face = 0;

71
src/npc.c
View file

@ -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)
free(came_from);
/*if(is_alloc)
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)
free(came_from);
/*if(is_alloc)
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 */
int npc_pathfind(int32_t dest_x, int32_t dest_y, Map *full_map, NPC *npc) {
* Borked, use npc_pathfind instead*/
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) {
}
}
as_clean(visited, gscore, fscore);
free(came_from);
if(is_alloc){
as_clean(visited, gscore, fscore);
free(came_from);
}
return 3;
}

6
src/npc.h
View file

@ -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