#version 300 es
uniform int  u_type;
uniform mat4 u_mvMatrix;
uniform mat4 u_projMatrix;
uniform vec4 u_light_dir;
uniform int   u_cmd;
uniform float u_time;
uniform float u_shadow_offset;
in  vec4  pos;
in  vec2  tex;
in  vec4  nor;
out float _type;
out float _flag;
out float _cmd;
out float _off;
out float _time;
out vec2  _tex;
out vec3  _nor;
out vec3  _v1;
out vec3  _v2;
out vec4  _back;
void main()
{
	_type  = float(u_type % 100);
	_flag  = float(u_type / 100);
	vec4 p = pos;
	_tex   = tex;
	_nor   = nor.xzy;
	_cmd   = float(u_cmd);
	_time  = u_time;
	if (_cmd == 0.0)
		_off = 0.0;
	else if (abs(_cmd) < 3.0)
		_off = pos.x/500.0 + 0.5;
	else
		_off = pos.y/1000.0 + 0.5;
	if (_type > 0.0 && _type < 10.0)
	{
		if (_flag < 10.0)
		{
			mat4 m = u_projMatrix * u_mvMatrix;
		    float dk = (2.0 - 0.1*pow((5.0-_flag),2.0)) * u_shadow_offset;
			float dx =  0.05 * (_type==1.0 ? dk/4.0 : dk);
			float dz = -0.20 * dk * length(m[0].xyz)*110.0;
		    p *= vec4(1.0+dx,1,1,1);
		    p = m * p;
			p += vec4(0,dz,8,0);
			gl_Position = p;
		}
		else
		{
			if (_type == 1.0)
			{
				_back = vec4(0.2,0.2,0.2,1);
				if (pos.z > 180.0 && pos.z < 250.0)
				{
					if (_flag == 40.0)
						_back = vec4(1,0,0,1);
					else if (_flag == 50.0 || _flag == 20.0 && pos.x < -50.0 || _flag == 30.0 && pos.x > 50.0)
						_back = vec4(1,1,0,1);
				}
			}
			_v1   = vec3(u_light_dir.x, -u_light_dir.y, 0);
			_v1   = (u_mvMatrix * vec4(_v1,0)).xyz;
			_v1.y = length(_v1) * -1.2;
			_v2   = (u_mvMatrix * vec4(0,-1,_type==1.0?-0.5:-0.25, 0)).xyz;
			gl_Position = u_projMatrix * u_mvMatrix * p;
		}
	}
	else
	{
		if (_type == 10.0 && _flag > 0.0)
			p.x *= _flag / 100.0;
		gl_Position = u_projMatrix * u_mvMatrix * p;
	}
}