#version 330 core

uniform mat4 u_mvp;
uniform mat4 u_transmat;
uniform vec3 u_campos;

uniform float u_time;

layout (location = 0) in vec3 position;
layout (location = 1) in vec3 normal;
layout (location = 2) in vec2 texcoord;

out vec3 v_position;
out vec3 v_normal;
out vec2 v_texcoord;

flat out int v_id;

out vec4 v_projected_normal;

void main()
{
	float time = sin((u_time + (position.x - position.z) * 4.0) / 24.0) * 0.2;
	v_id = int(position.x - position.z);
	v_position = position + vec3(0.0, time, 0.0);
	v_normal = normal;
	v_texcoord = texcoord;

	v_projected_normal = u_transmat * vec4(v_normal, 1.0); 

	gl_Position = u_mvp * vec4(v_position, 1.0);
}