void move(mat4 & e, vec3 & pos) {
//e_position -= vec3(getPosition().v[0],0,getPosition().v[2]) * getDelta() * e_speed;
if(e_isAlive) {
e = scale(e, vec3(1.5,1.5,1.5));
e_direction = vec3(getPosition() - e_cs.center);
e_direction = normalise(e_direction);
e_rotation.v[1] = std::acos(e_direction.v[2]);
if(e_direction.v[0] > 0)
e_rotation.v[1] =-e_rotation.v[1];
e = rotate_x_deg(e, e_rotation.v[0]);
e = rotate_y_deg(e, (-e_rotation.v[1] * (180/M_PI)));
e = rotate_z_deg(e, e_rotation.v[2]);
}
if(e_isAlive) {
vec3 newpos(e_cs.center);
newpos += e_direction * e_speed;
// newpos.v[1] -= 0.3;
setE_Position(newpos);
e = translate(e,getE_Position());
}
// e_position = getPosition() - e_position;
// temp -= getPosition() * getDelta() * e_speed;//vec3(getPosition().v[0],0,getPosition().v[2]);// * getDelta() * e_speed;
}
void createShaders(GLuint shader_programme) {
#define ONE_DEG_IN_RAD (2.0 * M_PI) / 360.0 // 0.017444444
// input variables
float near = 0.1f; // clipping plane
float far = 100.0f; // clipping plane
float fov = 67.0f * ONE_DEG_IN_RAD; // convert 67 degrees to radians
float aspect = (float)g_gl_width / (float)g_gl_height; // aspect ratio
// matrix components
float range = tan (fov * 0.5f) * near;
float Sx = (2.0f * near) / (range * aspect + range * aspect);
float Sy = near / range;
float Sz = -(far + near) / (far - near);
float Pz = -(2.0f * far * near) / (far - near);
GLfloat proj_mat[] = {
Sx, 0.0f, 0.0f, 0.0f,
0.0f, Sy, 0.0f, 0.0f,
0.0f, 0.0f, Sz, -1.0f,
0.0f, 0.0f, Pz, 0.0f
};
mat4 T = translate (identity_mat4 (), vec3 (-cam_pos[0], -cam_pos[1], -cam_pos[2]));
mat4 R = rotate_z_deg (identity_mat4 (), -cam_zaw);
mat4 view_mat = T * R;
view_mat_location = glGetUniformLocation (shader_programme, "view");
glUseProgram (shader_programme);
glUniformMatrix4fv (view_mat_location, 1, GL_FALSE, view_mat.m);
proj_mat_location = glGetUniformLocation (shader_programme, "proj");
glUseProgram (shader_programme);
glUniformMatrix4fv (proj_mat_location, 1, GL_FALSE, proj_mat);
}
// Maintain translations and rotations.
inline void updateView() {
mat4 T = translate (identity_mat4 (), vec3 (-cam_pos[0], -cam_pos[1], -cam_pos[2])); // cam translation
mat4 R = rotate_z_deg(identity_mat4(), -cam_zaw)
* rotate_y_deg(identity_mat4(), -cam_yaw)
* rotate_x_deg(identity_mat4(), -cam_xaw);
mat4 view_mat = T * R;
glUniformMatrix4fv (view_mat_location, 1, GL_FALSE, view_mat.m);
}
