bounce on walls

src/player.c

@@ -5,13 +5,14 @@
 #include "cfg.h"
 #include "input.h"
 #include <string.h>
+#include <math.h>
 
 static void
 player_update(Entity *this, Game *g)
 {
 	const int on_ground = entity_collide(this, g, 0, 1);
 
-	this->vel[0] = 2.0;
+	this->vel[0] = 2.0 * this->player.dirx;
 	this->vel[1] *= 0.99;
 	this->vel[1] += 0.2;
 	this->player.scale_x += 0.1 * (1.0 - this->player.scale_x);
@@ -42,6 +43,8 @@ player_update(Entity *this, Game *g)
 	}
 
 	entity_move(this, g);
+	if (this->vel[0] == 0.0)
+		this->player.dirx *= -1;
 }
 
 static void
@@ -74,4 +77,5 @@ player_init(Entity *this)
 	this->height = 12;
 	this->player.scale_x = 1.0;
 	this->player.scale_y = 1.0;
+	this->player.dirx = 1;
 }

src/player.h

@@ -1,8 +1,9 @@
 #pragma once
 
 typedef struct {
-	float scale_x;
-	float scale_y;
+	double scale_x;
+	double scale_y;
+	int dirx;
 } Player;
 
 struct Entity;