diff --git a/game/main.c b/game/main.c
index 320015a..e02c0cf 100644
--- a/game/main.c
+++ b/game/main.c
@@ -40,6 +40,8 @@
 #define PWIDTH 48
 #define PHEIGHT 64
 #define PANIMLEN 8
+#define PBBWIDTH 16
+#define PBBHEIGHT 24
 #define PFBWIDTH 20
 #define PFBHEIGHT 16
 #define PFBOFFX -10
@@ -108,7 +110,7 @@ typedef struct {
 	double speed;
 	dvec_t pos, dir;
 	ivec_t animstep, svarstep, ext;
-	dbox_t fbox;
+	dbox_t bbox, fbox;
 	SDL_Texture *tex;
 } dynentity_t;
 
@@ -466,6 +468,10 @@ void game_init(int argc, char *argv[], void *mem, SDL_Renderer *renderer)
 	state->p.animlen = PANIMLEN;
 	state->p.animstep.x = PWIDTH;
 	state->p.svarstep.y = PHEIGHT;
+	state->p.bbox.off.x = -PBBWIDTH / 2;
+	state->p.bbox.off.y = -PBBHEIGHT / 2;
+	state->p.bbox.ext.x = PBBWIDTH;
+	state->p.bbox.ext.y = PBBHEIGHT;
 	state->p.fbox.off.x = PFBOFFX;
 	state->p.fbox.off.y = PFBOFFY;
 	state->p.fbox.ext.x = PFBWIDTH;
@@ -570,7 +576,7 @@ static inline bool tile_passable(const map_t map, int x, int y)
 
 static inline double dynentity_bottom(dynentity_t *e)
 {
-	return e->pos.y + (double)e->ext.y / 2.0;
+	return e->pos.y + e->bbox.off.y + e->bbox.ext.y;
 }
 
 static inline double objentity_bottom(objentity_t *e)