// Updates a player based on user input:
void Player::update(const Heightmap& hmap, const Graphics::Camera& cam, double timestep) {
double height = hmap.getHeight(loc)+size;
vel -= vec3::Y()*0.008*timestep;
// If we can walk:
if(loc.y-walkTolerance < height) {
// Apply motion along cardinal directions if any of the keys are pressed, or else have them stand still:
if(KEY(17)||KEY(30)||KEY(31)||KEY(32)) {
vec3 snorm = hmap.getNormal(loc);
vel += cam.right().cross(snorm).norm() * (0.6*KEY(31) - KEY(17)) * 0.06*timestep;
vel += cam.ahead().cross(snorm).norm() * (KEY(32) - KEY(30)) * 0.05*timestep;
} else if(vel.abs2()<3) vel = vec3::zero();
} else if(loc.y-stillTolerance < height && vel.abs2()<3) {
vel = vec3::zero();
}
// Jetpack and gravity:
vel += cam.up()*KEY(57)*0.07*timestep - vec3::Y()*timestep*0.03;
// Resistance to motion:
vel *= pow(0.7, 0.001*timestep);
// Superclass update:
Agent::update(hmap, timestep);
}
