/* Shoot in the direction of attack_vector */
static void pilot_shoot(struct Pilot *pilot) {
double xoff,yoff;
xoff = pilot->attack_vector.x * (pilot->walker.physics.radius+1);
yoff = pilot->attack_vector.y * (pilot->walker.physics.radius+1);
add_projectile(make_bullet (
pilot->walker.physics.x + xoff,
pilot->walker.physics.y + yoff,
addVectors(pilot->walker.physics.vel,
multVector(pilot->attack_vector,10.0))));
pilot->weap_cooloff = 7;
}
void PLYObject::draw()
{
// setup default material
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, shininess);
glColor3fv(diffuse);
// set lighting if enabled
// Otherwise, compute colors
if (light)
{
glEnable(GL_LIGHTING);
}
else
{
glDisable(GL_LIGHTING);
for (int v=0; v<nv; v++)
{
// Instead of this, use the Phong illumination equation to find the color
// Phong equation with attenuation factor att
// If = (As*Am) + ((Al*Am) + Id + Is) * att
// Get ModelView
float M[16];
Matrix4f modelViewMatrix;
glGetFloatv(GL_MODELVIEW_MATRIX, M);
for (int i = 0; i < 3; i++) {
modelViewMatrix[i][3] = 0.0;
modelViewMatrix[3][i] = 0.0;
for (int j = 0; j < 3; j++) {
modelViewMatrix[i][j] = M[i*4+j];
}
}
modelViewMatrix[3][3] = 1.0;
// ModelView is already here in a Matrix4f for operations
Vector3f vVertex;
multVector(vVertex, modelViewMatrix, vertices[v]);
Vector4f lightSource;
copy(lightSource, light_pos);
//glGetLightfv(GL_LIGHT0, GL_POSITION, lightSource);
Vector3f lightDir;
sub(lightDir, lightSource, vVertex);
float d = length(lightDir);
// Get parameters for the ambient part
float Al[4] = {0.0f, 0.0f, 0.0f, 0.0f };
glGetLightfv( GL_LIGHT0, GL_AMBIENT, Al );
Vector4f As = {0.0f, 0.0f, 0.0f, 0.0f };
glGetFloatv( GL_LIGHT_MODEL_AMBIENT, As );
float Dl[4] = {0.0f, 0.0f, 0.0f, 0.0f };
glGetLightfv( GL_LIGHT0, GL_DIFFUSE, Dl );
float Sl[4] = {0.0f, 0.0f, 0.0f, 0.0f };
glGetLightfv( GL_LIGHT0, GL_SPECULAR, Sl );
Vector4f Am = {0.0f, 0.0f, 0.0f, 0.0f };
copy(Am, ambient);
float Dm[4] = {0.0f, 0.0f, 0.0f, 0.0f };
copy(Dm, diffuse);
float Sm[4] = {0.0f, 0.0f, 0.0f, 0.0f };
copy(Sm, specular);
float f = shininess[0]; // copy shininess
float constantAttenuation = 0.0f;
glGetLightfv( GL_LIGHT0, GL_CONSTANT_ATTENUATION, &constantAttenuation);
float linearAttenuation = 0.0f;
glGetLightfv( GL_LIGHT0, GL_LINEAR_ATTENUATION , &linearAttenuation );
float quadraticAttenuation = 0.0f;
glGetLightfv( GL_LIGHT0, GL_QUADRATIC_ATTENUATION , &quadraticAttenuation);
float att = (constantAttenuation +
(linearAttenuation*d) +
(quadraticAttenuation*d*d) );
// Start the phong equation with the ambient component
Vector4f temp1;
multVectors4(temp1, As, Am);
Vector4f temp2;
multVectors4(temp2, Al, Am);
scale4(temp2, att);
Vector4f final_color;
//final_color = (As * Am) + (Al * Am)*att;
add(final_color, temp1, temp2);
// Calculate lambertTerm
Vector3f N;
normalizeVector(N, normals[v]);
Vector3f L;
normalizeVector(L, lightDir);
float lambertTerm = dotProd(N,L);
if (lambertTerm > 0.0){
// diffuse component
multVectors4(temp1,Dl,Dm);
scale4(temp1,lambertTerm);
add(final_color, final_color, temp1);
// specular component
Vector3f E;
normalizeVector(E,viewer_pos);
Vector3f R;
scale4(temp1,lambertTerm*2,N);
sub(R, temp1, L); // reflect(-L,N)
float dotProduct = dotProd(R,E);
float specular_factor;
if(dotProduct > 0.0){
specular_factor = pow(dotProduct, f);
} else {
specular_factor = 0; // pow(0.0, f);
}
multVectors4(temp1, Sl, Sm);
scale4(temp1, specular_factor*att, temp1);
add(final_color, final_color, temp1);
// printf("DM are %f , %f and %f", final_color[0], final_color[1], final_color[2]);
}
//Colors [v][i] should take the colors of final_color, how?
colors[v][0] = final_color[0]*255;
colors[v][1] = final_color[1]*255;
colors[v][2] = final_color[2]*255;
}
}
// Now do the actual drawing of the model
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glBegin(GL_TRIANGLES);
for (int i = 0; i < nf; i++)
{
for (int j = 0; j < 3; j++)
{
glColor3ubv((GLubyte*)colors[faces[i][j]]);
glNormal3fv(normals[faces[i][j]]); // vertex normal
glVertex3fv(vertices[faces[i][j]]); // vertex coordinates
}
}
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
if (hascolor)
glDisable(GL_COLOR_MATERIAL);
}