entity init by name

src/deathpart.h

@@ -3,8 +3,3 @@
 typedef struct {
 	int skip;
 } DeathPart;
-
-struct Entity;
-struct Game;
-
-struct Entity *deathpart_init(struct Entity *this, int x, int y);

src/entity.c

@@ -96,3 +96,9 @@ entity_move(Entity *this, Game *g)
 		}
 	}
 }
+
+Entity *
+entity_init(Entity *this, unsigned int type, int x, int y)
+{
+	return entityinits[type - 1](this, x, y);
+}

src/entity.h

@@ -34,3 +34,4 @@ bool entity_collide(Entity *this, struct Game *g, int ox, int oy);
 bool entity_meet(Entity *this, Entity *other);
 Entity *entity_place_meeting(Entity *this, struct Game *g, unsigned int type);
 void entity_move(Entity *this, struct Game *g);
+Entity *entity_init(Entity *this, unsigned int type, int x, int y);

src/entityimpl.h

@@ -6,13 +6,18 @@
 #include <string.h>
 
 #define IMPL_UPDATE() static Entity * \
-	update([[maybe_unused]] Entity *this, [[maybe_unused]] Game *g) {
+update([[maybe_unused]] Entity *this, [[maybe_unused]] Game *g) {
+
 #define IMPL_DRAW() static Entity * \
-	draw([[maybe_unused]] Entity *this, [[maybe_unused]] Game *g) {
-#define IMPL_INIT(X) __attribute__((constructor)) static void init_tag() { \
+draw([[maybe_unused]] Entity *this, [[maybe_unused]] Game *g) {
+
+#define IMPL_INIT(X) static Entity *init(Entity *this, int x, int y); \
+__attribute__((constructor)) static void init_tag() { \
+	entityinits[num_entitytags] = init; \
 	entitytags[num_entitytags++] = #X; \
 } \
-Entity *X##_init(Entity *this, int x, int y) { do { \
+static Entity * \
+init(Entity *this, int x, int y) { do { \
 	memset(this, 0, sizeof(*this)); \
 	this->update = update; \
 	this->draw = draw; \
@@ -20,4 +25,5 @@ Entity *X##_init(Entity *this, int x, int y) { do { \
 	this->pos[1] = y; \
 	this->type = entity_type(#X); \
 } while(0);
+
 #define IMPL_END return this; }

src/entitytag.c

@@ -1,4 +1,5 @@
 #include "entitytag.h"
 
 unsigned int num_entitytags = 0;
-const char *entitytags[256] = {0};
+const char *entitytags[256] = {};
+EntityInit entityinits[256] = {};

src/entitytag.h

@@ -1,4 +1,7 @@
 #pragma once
+#include "entity.h"
 
+typedef Entity *(*EntityInit)(Entity *this, int x, int y);
 extern unsigned int num_entitytags;
 extern const char *entitytags[256];
+extern EntityInit entityinits[256];

src/exit.h

@@ -3,8 +3,3 @@
 typedef struct {
 	int dir;
 } Exit;
-
-struct Entity;
-struct Game;
-
-struct Entity *exit_init(struct Entity *this, int x, int y);

src/game.c

@@ -1,10 +1,8 @@
 #include "game.h"
-#include "exit.h"
+#include "entity.h"
 #include "map.h"
-#include "player.h"
 #include "cfg.h"
 #include "rotrect.h"
-#include "spike.h"
 #include <string.h>
 
 void
@@ -71,16 +69,19 @@ game_restart_scene(Game *this)
 			Entity *e;
 			switch (map_get(x, y)) {
 			case 2:
-				e = player_init(game_create_entity(this), dx, dy);
+				e = entity_init(game_create_entity(this),
+				                entity_type("player"), dx, dy);
 				e->player.dirx = this->player_dir;
 				break;
 			case 3:
 			case 4:
-				e = exit_init(game_create_entity(this), dx, dy);
+				e = entity_init(game_create_entity(this),
+				                entity_type("exit"), dx, dy);
 				e->exit.dir = (map_get(x, y) == 3) ? -1 : 1;
 				break;
 			case 5:
-				spike_init(game_create_entity(this), dx, dy);
+				e = entity_init(game_create_entity(this),
+				                entity_type("spike"), dx, dy);
 				break;
 			default:
 				break;

src/input.c

@@ -3,7 +3,7 @@
 
 static const unsigned int keys[6] = {LZYK_LEFT, LZYK_RIGHT, LZYK_UP,
                                      LZYK_DOWN, LZYK_O,     LZYK_X};
-static int states[6] = {0};
+static int states[6] = {};
 
 void input_update(void)
 {

src/player.c

@@ -1,4 +1,3 @@
-#include "deathpart.h"
 #include "entity.h"
 #include "entityimpl.h"
 #include "game.h"
@@ -59,7 +58,8 @@ IMPL_UPDATE() {
 		for (int y = 0; y < 7; y++) {
 			int dx = this->pos[0] - 6;
 			for (int x = 0; x < 7; x++) {
-				deathpart_init(game_create_entity(g), dx, dy);
+				entity_init(game_create_entity(g),
+				            entity_type("deathpart"), dx, dy);
 				dx += 2;
 			}
 			dy += 2;

src/player.h

@@ -10,8 +10,3 @@ typedef struct {
 	double angle;
 	int dirx;
 } Player;
-
-struct Entity;
-struct Game;
-
-struct Entity *player_init(struct Entity *this, int x, int y);

src/spike.h

@@ -1,6 +0,0 @@
-#pragma once
-
-struct Entity;
-struct Game;
-
-struct Entity *spike_init(struct Entity *this, int x, int y);