diff --git a/include/main.h b/include/main.h
index f4e4fbd..a01cee7 100644
--- a/include/main.h
+++ b/include/main.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#define PLAYER_SIZE 16
-
 #define TILE_S    8
 #define TILESET_W 12
 #define TILESET_H 6
diff --git a/include/player.h b/include/player.h
index 6e8f26d..8a862d4 100644
--- a/include/player.h
+++ b/include/player.h
@@ -1,10 +1,13 @@
 #pragma once
 #include "main.h"
 
-#define PLAYER_ACC 0.8
-#define BASE_FRIC  0.2
-#define GRAVITY    0.4
-#define JUMP_H     6
+#define PLAYER_SIZE 12
+
+#define PLAYER_ACC  1
+#define BASE_FRIC   0.2
+#define GRAVITY     0.4
+#define JUMP_H      7
+#define COYOTE_TIME 3
 
 Player player_reset(Player player, Level level);
 Vec2 search(tile_t x, Level level);
diff --git a/src/main.c b/src/main.c
index 8131fb9..c5089a0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -111,7 +111,11 @@ main(void)
 	input_init();
 	Player player = {.pos = {50, 50}, .spawn = {0, 0}, .spd = {0, 0}};
 	Vec2 camera = {0, 0};
+
 	int running = 1;
+	int jumping = 1;
+	int airbreak = 1;
+	int coyote = 0;
 
 	while (running) {
 
@@ -154,21 +158,43 @@ main(void)
 		      player.pos.x + PLAYER_SIZE - camera.x - 1,
 		      player.pos.y + PLAYER_SIZE - camera.y - 1, C_BLACK);
 
-		dprint(10, 10, C_BLACK, "%d", player.pos.x);
-		dprint(10, 30, C_BLACK, "%d", player.pos.y);
+		dprint(10, 10, C_BLACK, "%d", jumping);
 
 		/* input */
 		input_step();
 
 		Vec2 mov = {
 		    .x = input_down(K_RIGHT) - input_down(K_LEFT),
-		    .y = input_down(K_DOWN) - input_down(K_UP),
+		    .y = 0,
 		};
 
-		player.spd.x *= (1 - BASE_FRIC);    /* friction */
-		player.spd.y *= (1 - BASE_FRIC);    /* friction */
-		player.spd.x += mov.x * PLAYER_ACC; /* idem */
-		player.spd.y += mov.y * PLAYER_ACC; /* idem */
+		/* on the ground */
+		if (collide((Vec2){player.pos.x, player.pos.y + 1}, 0, 1,
+		            level)) {
+			jumping = 0;
+			airbreak = 0;
+			coyote = COYOTE_TIME;
+		} else {
+			--coyote;
+		}
+
+		/* JUMP */
+		if (input_pressed(K_A) && coyote > 0) {
+			player.spd.y = -JUMP_H;
+			jumping = 2;
+			coyote = 0;
+			airbreak = 0;
+		}
+
+		/* airbreak */
+		if (!airbreak && (!input_down(K_A) || player.spd.y > 0)) {
+			airbreak = 1;
+		}
+
+		/* moving */
+		player.spd.x *= (1 - BASE_FRIC);                /* friction */
+		player.spd.x += mov.x * PLAYER_ACC;             /* idem */
+		player.spd.y += GRAVITY + (GRAVITY * airbreak); /* gravity */
 
 		if (player.spd.x > -0.2 && player.spd.x < 0.2) {
 			player.spd.x = 0;
@@ -180,6 +206,7 @@ main(void)
 		Res_Mov position = move(player, level); /* i'm crying rn */
 		player = position.player;
 
+		/* if the player collide with a wall */
 		if (position.moved.x) {
 			player.spd.x = 0;
 		}
diff --git a/src/player.c b/src/player.c
index a102c9a..1df39e7 100644
--- a/src/player.c
+++ b/src/player.c
@@ -80,6 +80,9 @@ collide(Vec2 pos, int h, tile_t obj, Level level)
 	const Vec2 pos_tl = (Vec2){pos.x + h, pos.y + h};
 	const Vec2 pos_br =
 	    (Vec2){pos.x + PLAYER_SIZE - h - 1, pos.y + PLAYER_SIZE - h - 1};
+	const Vec2 middle =
+	    (Vec2){pos.x + PLAYER_SIZE / 2, pos.y + PLAYER_SIZE / 2};
+
 	/* Check if there's something in */
 	/* the square (x, y, x + 15, y + 15) */
 	/* The size of the hitbox changes with h */
@@ -87,7 +90,11 @@ collide(Vec2 pos, int h, tile_t obj, Level level)
 	if (collide_pixel(pos_tl, obj, level) ||
 	    collide_pixel(pos_br, obj, level) ||
 	    collide_pixel((Vec2){pos_tl.x, pos_br.y}, obj, level) ||
-	    collide_pixel((Vec2){pos_br.x, pos_tl.y}, obj, level)) {
+	    collide_pixel((Vec2){pos_br.x, pos_tl.y}, obj, level) ||
+	    collide_pixel((Vec2){middle.x, pos_tl.y}, obj, level) ||
+	    collide_pixel((Vec2){middle.x, pos_br.y}, obj, level) ||
+	    collide_pixel((Vec2){pos_tl.x, middle.y}, obj, level) ||
+	    collide_pixel((Vec2){pos_br.x, middle.y}, obj, level)) {
 		return 1;
 	}
 	return 0;