rays verticals and horizontals are working

headers/cube3d_struct.h

@@ -32,11 +32,11 @@ typedef struct		s_vec
 
 typedef struct		s_rcast
 {
-	int				tmp;
 	t_vec			screen_dist;
 	t_vec			screen_size;
 	t_vec			ray;
 	t_vec			wall;
+	int				tmp;
 	int				wall_height;
 	int				screen_width;
 	int				screen_height;

srcs/draw/ray_intersect.c

@@ -20,8 +20,20 @@ static void	init_raycast(t_rcast *rcast, t_vec *ray)
 	rcast->next_cell_x = -rcast->ray_sign_x;
 	rcast->next_cell_y = -rcast->ray_sign_y;
 	// ray steps in both axis
-	rcast->ray_step_x = ft_abs(rcast->cell * rcast->slope_y);
+	rcast->ray_step_x = 0;
-	rcast->ray_step_y = ft_abs(rcast->cell * rcast->slope_x);
+	if (rcast->slope_x)
+	{
+		rcast->ray_step_x = ft_abs(rcast->cell);
+		if (rcast->slope_y)
+			rcast->ray_step_x *= ft_abs(rcast->slope_y);
+	}
+	rcast->ray_step_y = 0;
+	if (rcast->slope_y)
+	{
+		rcast->ray_step_y = ft_abs(rcast->cell);
+		if (rcast->slope_x)
+			rcast->ray_step_y *= ft_abs(rcast->slope_x);
+	}
 	
 	// tmp
 		if (rcast->tmp)
@@ -42,8 +54,12 @@ static void	init_first_step(t_rcast *rcast, t_vec *ray)
 		rcast->first_next_y = ray->start.y % rcast->cell;
 	if (rcast->ray_sign_y < 0)
 		rcast->first_next_y -= rcast->cell;
-	rcast->next_x = ft_abs(rcast->first_next_x * rcast->slope_y);
+	rcast->next_x = ft_abs(rcast->first_next_x);
-	rcast->next_y = ft_abs(rcast->first_next_y * rcast->slope_x);
+	if (rcast->slope_y != 0)
+		rcast->next_x *= ft_abs(rcast->slope_y);
+	rcast->next_y = ft_abs(rcast->first_next_y);
+	if (rcast->slope_x != 0)
+		rcast->next_y *= ft_abs(rcast->slope_x);
 
 	// tmp
 		if (rcast->tmp)
@@ -60,7 +76,7 @@ static void	next_cell(t_rcast *rcast)
 			printf("\n [next_x(%i) > next_y(%i) ?]", rcast->next_x, rcast->next_y);
 	//tmp
 
-	if (rcast->slope_x == 0 || rcast->next_x > rcast->next_y)
+	if (!rcast->slope_x || (rcast->next_x > rcast->next_y && rcast->slope_y))
 	{
 		rcast->cell_y += rcast->next_cell_y;
 		rcast->next_y += rcast->ray_step_y;

srcs/draw/raycast.c

@@ -34,40 +34,55 @@ static void	wall_length(t_rcast *rcast)
 {
 	int	length;
 
-	// tmp, to draw the map
-		if (rcast->tmp)
-			printf("length:");
-	// tmp end
-
 	rcast->wall.start.x = rcast->ray_nb;
 	rcast->wall.end.x = rcast->ray_nb;
-	if (rcast->is_x == 1 && rcast->slope_y != 0)
+	if (rcast->slope_x == 0)
 	{
-		length = (rcast->next_x - rcast->ray_step_x) / ft_abs(rcast->slope_y);
-		length = (double)length * (double)rcast->screen_dist.end.y / (double)rcast->slope_x;
 
 		// tmp, to draw the map
 			if (rcast->tmp)
-				printf("(is_x == 1, slope_y != 0)");
+				printf("(slope_x == 0) ");
 		// tmp end
 
+		length = (rcast->next_y - rcast->ray_step_y);
 	}
-	if (rcast->is_x == 0 && rcast->slope_x != 0)
+	else if (rcast->slope_y == 0)
 	{
-		length = (rcast->next_y - rcast->ray_step_y) / ft_abs(rcast->slope_x);
-		length = (double)length * (double)rcast->screen_dist.end.y / (double)rcast->slope_y;
 
 		// tmp, to draw the map
 			if (rcast->tmp)
-				printf("(is_x == 0, slope_x != 0)");
+				printf("(slope_y == 0) ");
 		// tmp end
 
+		length = (rcast->next_x - rcast->ray_step_x);
+	}
+	else if (rcast->is_x == 1)
+	{
+
+		// tmp, to draw the map
+			if (rcast->tmp)
+				printf("(is_x == 1) ");
+		// tmp end
+
+		length = (rcast->next_x - rcast->ray_step_x) / ft_abs(rcast->slope_y);
+//		length = (double)length * (double)rcast->screen_dist.end.y / (double)rcast->slope_x;
+	}
+	else if (rcast->is_x == 0)
+	{
+
+		// tmp, to draw the map
+			if (rcast->tmp)
+				printf("(is_x == 0) ");
+		// tmp end
+
+		length = (rcast->next_y - rcast->ray_step_y) / ft_abs(rcast->slope_x);
+//		length = (double)length * (double)rcast->screen_dist.end.y / (double)rcast->slope_y;
 	}
 	rcast->ray_len = ft_abs(length);
 
 	// tmp, to draw the map
 		if (rcast->tmp)
-			printf(" %i", rcast->ray_len);
+			printf("length:%i", rcast->ray_len);
 	// tmp end
 
 }