diff --git a/.gitignore b/.gitignore
index 4c9e5cd..edab7e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,9 @@
 /*.g1a
 /*.g3a
 /hyperultra
+/src/*.o
+/src/*.d
+/map/*.h
 
 # Python bytecode
 __pycache__/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa69c35..5b29e1f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,7 @@ project(MyAddin)
 include(GenerateG1A)
 include(GenerateG3A)
 include(Fxconv)
+include_directories(map)
 find_package(Gint 2.9 REQUIRED)
 
 set(SOURCES
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..808de94
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,35 @@
+CC      := gcc
+LD      := $(CC)
+CFLAGS  := -Os -std=c99 -Wall -Wextra -Imap -MMD
+LDFLAGS := -lm -lSDL2 -lSDL2_image -lSDL2_mixer
+NAME    := hyperultra
+EMBED   := $(patsubst %.json,%.h,$(wildcard map/*.json))
+OBJ     := $(patsubst %.c,%.o,$(wildcard src/*.c))
+DEP     := $(patsubst %.o,%.d,$(OBJ))
+
+all:
+	@make --no-print-directory $(EMBED)
+	@make --no-print-directory $(NAME)
+
+$(NAME): $(OBJ)
+	$(LD) -o $(NAME) $(OBJ) $(LDFLAGS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+%.h: %.json
+	able -e -i $< -o $@ 2&>/dev/null
+
+run: re
+	./$(NAME)
+
+clean:
+	rm -f $(NAME) $(OBJ) $(DEP) $(EMBED)
+
+re:
+	@make --no-print-directory clean
+	@make --no-print-directory all
+
+.PHONY: all run clean re
+
+-include $(DEP)
diff --git a/build.sh b/build.sh
deleted file mode 100755
index 149511a..0000000
--- a/build.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/sh
-gcc -std=c99 -Wall -Wextra -o hyperultra src/*.c \
-    -lm -lSDL2 -lSDL2_image -lSDL2_mixer
diff --git a/compile_flags.txt b/compile_flags.txt
index c376403..bfdbe1a 100644
--- a/compile_flags.txt
+++ b/compile_flags.txt
@@ -1,3 +1,4 @@
 -Wall
 -Wextra
 -std=c99
+-Imap
diff --git a/map/00.json b/map/00.json
new file mode 100644
index 0000000..2558349
--- /dev/null
+++ b/map/00.json
@@ -0,0 +1 @@
+{"width":25,"height":14,"data":[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,1,1,1,1,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,1,1,1,1,1,0,0,1,0,1,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,1,1,1,0,0,0,1,1,1,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]}
\ No newline at end of file
diff --git a/res/tset.png b/res/tset.png
index af367b9..b1d9e2f 100644
Binary files a/res/tset.png and b/res/tset.png differ
diff --git a/src/background.c b/src/background.c
index 4d17af3..3694ce8 100644
--- a/src/background.c
+++ b/src/background.c
@@ -2,7 +2,7 @@
 #include "cfg.h"
 #include <math.h>
 
-static long tick = 0;
+long tick = 0;
 
 static void
 rotate(double *x, double *y, double angle)
diff --git a/src/entity.c b/src/entity.c
index 94c0a47..fc45e2a 100644
--- a/src/entity.c
+++ b/src/entity.c
@@ -11,8 +11,8 @@ entity_collide(Entity *this, Game *g, int ox, int oy)
 	const int y0 = this->pos[1] - this->height / 2 + oy;
 	const int x1 = x0 + this->width - 1;
 	const int y1 = y0 + this->height - 1;
-	return (map_get_px(x0, y0) == '0' || map_get_px(x0, y1) == '0' ||
-	        map_get_px(x1, y0) == '0' || map_get_px(x1, y1) == '0');
+	return (map_get_px(x0, y0) == 1 || map_get_px(x0, y1) == 1 ||
+	        map_get_px(x1, y0) == 1 || map_get_px(x1, y1) == 1);
 }
 
 void
diff --git a/src/map.c b/src/map.c
index c82de49..8cade23 100644
--- a/src/map.c
+++ b/src/map.c
@@ -1,30 +1,14 @@
 #include "map.h"
 #include "lzy.h"
 #include "cfg.h"
-
-static const char *map =
-	"0000000000000000000000000"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                       0"
-	"0                     0 0"
-	"00000000000000000000    0"
-	"0                       0"
-	"0                     0 0"
-	"0000000000000000000000000"
-;
+#include "00.h"
 
 int
 map_get(int x, int y)
 {
-	if (x < 0 || y < 0 || x >= 25 || y >= 14)
+	if (x < 0 || y < 0 || x >= map_00_json.width || y >= map_00_json.height)
 		return 0;
-	return map[x + y * 25];
+	return map_00_json.data[x + y * map_00_json.width];
 }
 
 int
@@ -38,11 +22,12 @@ map_get_px(int x, int y)
 void
 map_draw(void)
 {
+	extern long tick;
+	const int tile_id = 1 + tick / 18 % 2;
 	for (int y = 0; y < 14; y++)
-		for (int x = 0; x < 25; x++)
-			if (map[x + y * 25] == '0') {
+		for (int x = 0; x < map_00_json.width; x++)
+			if (map_00_json.data[x + y * map_00_json.width] == 1) {
 				LZY_DrawSetColor(BLACK);
-				LZY_DrawRect(x*16, y*16, 16, 16);
-				LZY_DrawFillRect(x*16, y*16, 16, 16);
+				LZY_DrawTile(tile_id, x * 16, y * 16);
 			}
 }
diff --git a/src/player.c b/src/player.c
index 9281357..485296c 100644
--- a/src/player.c
+++ b/src/player.c
@@ -46,7 +46,7 @@ player_update(Entity *this, Game *g)
 	}
 
 	entity_move(this, g);
-	if (this->vel[0] == 0.0)
+	if (this->vel[0] == 0.0 && this->vel[1] >= -0.0)
 		this->player.dirx *= -1;
 }