void SkySim::initialize(v3d_t playerStartPosition) {
// set up stars
for (size_t i = 0; i < NUM_STARS; i++) {
mStars[i].x = r_num (-10.0, 10.0);
mStars[i].y = r_num (-10.0, 10.0);
mStars[i].z = r_num (-10.0, 10.0);
mStars[i] = v3d_scale (10000.0, v3d_normalize (mStars[i]));
}
// set up sun
mCurrentSunPosition.x = (mSunPosition.x * cos (0.0)) - (mSunPosition.y * sin (0.0));
mCurrentSunPosition.y = (mSunPosition.x * sin (0.0)) + (mSunPosition.y * cos (0.0));
mCurrentSunPosition.z = mSunPosition.z;
// assetManager.setDirectionalLightPositions (mCurrentSunPosition,
// v3d_neg (mCurrentSunPosition));
// now figure out the sky color and the world lighting
setSkyColorAndWorldLighting ();
// these can be combined eh?
if (mCloudSim != NULL) {
delete mCloudSim;
}
mCloudSim = new CloudSim();
mCloudSim->newClouds (playerStartPosition);
}
void rotationAboutAnAxis(GtkWidget *widget, gdouble phi, gint axe)
{
GLdouble spin_quat[4] = {0,0,0,0};
gdouble phiRad = phi/180*PI;
if(axe<0 || axe>2) return;
spin_quat[axe] = 1.0;
v3d_scale(spin_quat,sin(phiRad/2));
spin_quat[3] = cos(phiRad/2);
add_quats(spin_quat, Quat, Quat);
}
v3d_t LightSource::computeDirectionalLightIntensity (v3d_t normalVector, bool isTheSun) {
double intensityScalar = v3d_dot (mDirection, normalVector);
if (intensityScalar < 0.0) {
intensityScalar = 0.0;
}
double overheadIntensity = v3d_dot (mDirection, v3d_v (0.0, 1.0, 0.0));
if (overheadIntensity < 0.0) {
intensityScalar += (overheadIntensity * 4.0);
}
else {
intensityScalar += overheadIntensity;
}
// if (intensityScalar > 0.0 && intensityScalar < 0.5) {
// intensityScalar = 0.5;
// }
// intensityScalar += (overheadIntensity + 0.3) * 0.5;
// if (intensityScalar < 0.6) {
// intensityScalar = 0.6;
// }
/*
if (isTheSun) {
intensityScalar *= 0.2;
}
else {
if (intensityScalar > 0.5) {
intensityScalar = 0.5;
}
}
*/
if (intensityScalar < 0.0) {
intensityScalar = 0.0;
}
if (intensityScalar > 1.0) {
intensityScalar = 1.0;
}
v3d_t color = v3d_scale (intensityScalar, mColor);
return color;
}
static void draw_bond_for_stick(int i,int j,GLdouble g, GabEditBondType bondType)
{
int k;
V4d Specular1 = {1.0f,1.0f,1.0f,1.0f};
V4d Diffuse1 = {0.0f,0.0f,0.0f,1.0f};
V4d Ambiant1 = {0.0f,0.0f,0.0f,1.0f};
V4d Specular2 = {1.0f,1.0f,1.0f,1.0f};
V4d Diffuse2 = {0.0f,0.0f,0.0f,1.0f};
V4d Ambiant2 = {0.0f,0.0f,0.0f,1.0f};
GLdouble p1;
GLdouble p2;
GLdouble aspect = g;
Specular1[0] = GeomOrb[i].Prop.color.red/(gdouble)65535;
Specular1[1] = GeomOrb[i].Prop.color.green/(gdouble)65535;
Specular1[2] = GeomOrb[i].Prop.color.blue/(gdouble)65535;
Specular2[0] = GeomOrb[j].Prop.color.red/(gdouble)65535;
Specular2[1] = GeomOrb[j].Prop.color.green/(gdouble)65535;
Specular2[2] = GeomOrb[j].Prop.color.blue/(gdouble)65535;
for(k=0;k<3;k++)
{
Diffuse1[k] = Specular1[k]*0.8;
Diffuse2[k] = Specular2[k]*0.8;
}
for(k=0;k<3;k++)
{
Ambiant1[k] = Specular1[k]*0.5;
Ambiant2[k] = Specular2[k]*0.5;
}
for(k=0;k<3;k++)
{
Ambiant1[k] = 0;
Ambiant2[k] = 0;
}
for(k=0;k<3;k++)
{
Specular1[k] = 0.8;
Specular2[k] = 0.8;
}
p1 = GeomOrb[i].Prop.covalentRadii+GeomOrb[i].Prop.radii;
p2 = GeomOrb[j].Prop.covalentRadii+GeomOrb[j].Prop.radii;
Cylinder_Draw_Color_Two(g,GeomOrb[i].C,GeomOrb[j].C,
Specular1,Diffuse1,Ambiant1,
Specular2,Diffuse2,Ambiant2,
p1,p2);
if( bondType == GABEDIT_BONDTYPE_SINGLE ||
( !ShowMultiBondsOrb &&
(bondType == GABEDIT_BONDTYPE_DOUBLE || bondType == GABEDIT_BONDTYPE_TRIPLE)
)
)
Cylinder_Draw_Color_Two(g,GeomOrb[i].C,GeomOrb[j].C,
Specular1,Diffuse1,Ambiant1,
Specular2,Diffuse2,Ambiant2,
p1,p2);
else
if(bondType == GABEDIT_BONDTYPE_DOUBLE && ShowMultiBondsOrb)
{
V3d vScal = {g/aspect*0.35,g/aspect*0.35,g/aspect*0.35};
V3d C1;
V3d C2;
V3d cross;
V3d sub;
V3d CRing;
getCentreRing(i,j, CRing);
v3d_sub(CRing, GeomOrb[i].C, C1);
v3d_sub(CRing, GeomOrb[j].C, C2);
v3d_cross(C1, C2, cross);
v3d_sub(GeomOrb[i].C, GeomOrb[j].C, sub);
v3d_cross(cross, sub, vScal);
if(v3d_dot(vScal,vScal)!=0)
{
v3d_normal(vScal);
v3d_scale(vScal, g/aspect*0.35);
}
else
getvScaleBond(g/aspect*0.35*2, C1,C2, vScal);
for(k=0;k<3;k++) C1[k] = GeomOrb[i].C[k];
for(k=0;k<3;k++) C2[k] = GeomOrb[j].C[k];
Cylinder_Draw_Color_Two(g,C1,C2, Specular1,Diffuse1,Ambiant1, Specular2,Diffuse2,Ambiant2, p1,p2);
for(k=0;k<3;k++) C1[k] = GeomOrb[i].C[k]-vScal[k];
for(k=0;k<3;k++) C2[k] = GeomOrb[j].C[k]-vScal[k];
Cylinder_Draw_Color_Two(g/2,C1,C2, Specular1,Diffuse1,Ambiant1, Specular2,Diffuse2,Ambiant2, p1,p2);
}
else
if(bondType == GABEDIT_BONDTYPE_TRIPLE && ShowMultiBondsOrb)
{
V3d vScal = {g/aspect*0.35,g/aspect*0.35,g/aspect*0.35};
V3d C1;
V3d C2;
V3d cross;
V3d sub;
V3d CRing;
getCentreRing(i,j, CRing);
v3d_sub(CRing, GeomOrb[i].C, C1);
v3d_sub(CRing, GeomOrb[j].C, C2);
v3d_cross(C1, C2, cross);
v3d_sub(GeomOrb[i].C, GeomOrb[j].C, sub);
v3d_cross(cross, sub, vScal);
if(v3d_dot(vScal,vScal)!=0)
{
v3d_normal(vScal);
v3d_scale(vScal, g/aspect*0.35);
}
else
getvScaleBond(g/aspect*0.35*2, C1,C2, vScal);
for(k=0;k<3;k++) C1[k] = GeomOrb[i].C[k]-vScal[k];
for(k=0;k<3;k++) C2[k] = GeomOrb[j].C[k]-vScal[k];
Cylinder_Draw_Color_Two(g/2,C1,C2, Specular1,Diffuse1,Ambiant1, Specular2,Diffuse2,Ambiant2, p1,p2);
for(k=0;k<3;k++) C1[k] = GeomOrb[i].C[k];
for(k=0;k<3;k++) C2[k] = GeomOrb[j].C[k];
Cylinder_Draw_Color_Two(g,C1,C2, Specular1,Diffuse1,Ambiant1, Specular2,Diffuse2,Ambiant2, p1,p2);
for(k=0;k<3;k++) C1[k] = GeomOrb[i].C[k]+vScal[k];
for(k=0;k<3;k++) C2[k] = GeomOrb[j].C[k]+vScal[k];
Cylinder_Draw_Color_Two(g/2,C1,C2, Specular1,Diffuse1,Ambiant1, Specular2,Diffuse2,Ambiant2, p1,p2);
}
}
void AiEntity::updateHopper() {
v3d_t movementForce = v3d_zero();
Physics& physics = *mGameModel->physics;
double time = physics.getLastUpdateTime();
if (mPhysicsEntity->health < 0.0) {
return;
}
if (r_numi(0, 1085) == 3) {
physics.addSoundEvent(SOUND_TIGER_ROAR, mPhysicsEntity->pos);
}
// keep it afloat in water even without a target
if (mTargetPhysicsHandle == 0 && mPhysicsEntity->worldViscosity > 0.0) {
physics.add_force(mPhysicsHandle, v3d_v(0.0, 4200.0, 0.0));
}
else if (physics.getIndexFromHandle(mTargetPhysicsHandle) >= 0) {
PhysicsEntity *targetPhysicsEntity = physics.getEntityByHandle(mTargetPhysicsHandle);
v3d_t targetPosition = targetPhysicsEntity->boundingBox.getCenterPosition();
v3d_t vecToTarget = v3d_sub(targetPosition, mWorldPosition);
if (mPhysicsEntity->worldViscosity > 0.0) {
if (v3d_mag(vecToTarget) < mMinDistanceToPlayer) {
vecToTarget = v3d_scale(1600.0 * (sin(time * 8.0) + 1.5), v3d_normalize(vecToTarget));
movementForce = v3d_add(movementForce, vecToTarget);
// give it a little more buoyancy
if (targetPosition.y - mWorldPosition.y > 0.0) {
physics.add_force(mPhysicsHandle, v3d_v(0.0, 2000.0, 0.0));
}
}
}
else if (mPhysicsEntity->on_ground) {
vecToTarget.y = 0.0;
if (v3d_mag(vecToTarget) < mMinDistanceToPlayer) {
// big leap?
if (r_numi(0, 60) == 3) {
vecToTarget = v3d_scale(15000.0, v3d_normalize(vecToTarget));
vecToTarget.y = 60000.0;
movementForce = v3d_add(movementForce, vecToTarget);
}
else {
vecToTarget = v3d_scale(2000.0, v3d_normalize(vecToTarget));
//vecToTarget.y = r_num(8000.0, 10000.0);
movementForce = v3d_add(movementForce, vecToTarget);
}
}
}
else {
vecToTarget.y = 0.0;
if (v3d_mag(vecToTarget) < mMinDistanceToPlayer) {
vecToTarget = v3d_scale(5.0, v3d_normalize(vecToTarget));
// vecToPlayer.y = 20.0;
movementForce = v3d_add(movementForce, vecToTarget);
}
}
physics.add_force(mPhysicsHandle, movementForce);
}
}
void AiEntity::updateBalloon() {
v3d_t movementForce = v3d_zero();
Physics& physics = *mGameModel->physics;
double time = physics.getLastUpdateTime();
if (mPhysicsEntity->worldViscosity > 0.0) {
physics.add_force(mPhysicsHandle, v3d_v(0.0, 120.0, 0.0));
}
if (physics.getIndexFromHandle(mTargetPhysicsHandle) >= 0) {
// we can't fly if we're on the ground!
if (mPhysicsEntity->on_ground) {
// movementForce = v3d_v(0.0, 8000.0, 0.0);
physics.add_force(mPhysicsHandle, v3d_v(0.0, 8000.0, 0.0));
}
PhysicsEntity* targetPhysicsEntity = physics.getEntityByHandle(mTargetPhysicsHandle);
if (targetPhysicsEntity == NULL) {
printf("AiEntity::updateBalloon() - target is NULL\n");
return;
}
v3d_t targetPosition = targetPhysicsEntity->boundingBox.getCenterPosition();
// let's keep this thing afloat
double desiredHeight;
if (targetPhysicsEntity->aiType == AITYPE_HOPPER ||
targetPhysicsEntity->aiType == AITYPE_SHOOTER ||
targetPhysicsEntity->aiType == AITYPE_PLAYER)
{
double sin2 = (2.0 * sin(time));
desiredHeight = targetPosition.y + 14.0 + sin2;
double height2 = mGameModel->location->getWorldMap()->mPeriodics->getTerrainHeight(mWorldPosition.x, mWorldPosition.z) + 10.0 + sin2;
if (height2 > desiredHeight) {
desiredHeight = height2;
}
}
else {
// this is so that when floaters fight they don't just keep flying higher
desiredHeight = mGameModel->location->getWorldMap()->mPeriodics->getTerrainHeight(mWorldPosition.x, mWorldPosition.z) + 10.0 + (2.0 * sin(time));
}
double delta = mWorldPosition.y - desiredHeight;
if (delta > 0.0) {
// delta += 0.2 * mPhysicsEntity.vel.y;
delta = 0.0;
}
else if (delta < 0.0) {
delta += 0.2 * mPhysicsEntity->vel.y;
}
double forceMagnitude = 5.0 * (delta * delta); //; - physicsEntity.vel.y;
if (forceMagnitude > 200.0) {
forceMagnitude = 200.0;
}
if (delta > 0.0) {
movementForce = v3d_v(0.0, -0.5 * forceMagnitude, 0.0);
}
else {
movementForce = v3d_v(0.0, forceMagnitude, 0.0);
}
// try to get to the target
v3d_t vecToTarget = v3d_sub(targetPosition, mWorldPosition);
vecToTarget.y = 0.0;
v3d_t velNoY = mPhysicsEntity->vel;
velNoY.y = 0.0;
// FIXME: there needs to be a check here to see if the AI
// is going the 'long way' to turn towards it's target
double angle1 = atan2(vecToTarget.x, vecToTarget.z);
double angle2 = atan2(velNoY.x, velNoY.z);
double angle = angle1 - angle2;
if (abs(angle) > 0.1) {
if (abs(angle) > M_PI) {
angle = -angle;
}
angle = absConstrain(angle, 0.01);
v3d_t rot = v3d_rotateY(mPhysicsEntity->vel, angle);
mPhysicsEntity->vel.x = rot.x;
mPhysicsEntity->vel.z = rot.z;
}
if (v3d_mag(vecToTarget) < mMinDistanceToPlayer) {
vecToTarget = v3d_scale(15.0, v3d_normalize(vecToTarget));
movementForce = v3d_add(movementForce, vecToTarget);
}
// physics.add_force (mPhysicsHandle, movementForce);
// mPhysicsEntity->force = v3d_add(mPhysicsEntity->force, movementForce);
mPhysicsEntity->force.x += movementForce.x;
mPhysicsEntity->force.y += movementForce.y;
mPhysicsEntity->force.z += movementForce.z;
}
}
void v3d_normal(V3d v)
{
v3d_scale(v,1.0/v3d_length(v));
}
bool WorldMap::rayCastSolidBlock(const v3d_t &a, const v3d_t &b, v3di_t &hitPosition, int &face) const {
v3d_t diff = v3d_sub(b, a);
double magnitude = v3d_mag(diff);
double step = 1.0 / (10.0 * magnitude);
v3di_t blockPosition;
v3d_t pos;
v3d_t lastPos = a;
static v3d_t faceAdd[6] = {
{{ 0.0, 0.0, 0.0 }}, // BLOCK_SIDE_LEF
{{ 1.0, 0.0, 0.0 }}, // BLOCK_SIDE_RIG
{{ 0.0, 1.0, 0.0 }}, // BLOCK_SIDE_TOP
{{ 0.0, 0.0, 0.0 }}, // BLOCK_SIDE_BOT
{{ 0.0, 0.0, 1.0 }}, // BLOCK_SIDE_FRO
{{ 0.0, 0.0, 0.0 }} // BLOCK_SIDE_BAC
};
for (double t = step; t <= 1.0; t += step) {
pos = v3d_add (a, v3d_scale (t, diff));
// TODO: check if this is the same v3di_t that was checked last frame
blockPosition = v3di_v (pos);
block_t *block = getBlock(blockPosition);
// special case for plants...
if (block != NULL && gBlockData.get(block->type)->solidityType == BLOCK_SOLIDITY_TYPE_PLANT) {
hitPosition = blockPosition;
face = 0;
return true;
}
if (isSolidBlock(blockPosition)) {
// the return value gets set
hitPosition = blockPosition;
// figure out which face was intersected first
double faceHitResults[NUM_BLOCK_SIDES];
double faceHitTimes[NUM_BLOCK_SIDES];
for (int s = 0; s < NUM_BLOCK_SIDES; s++) {
Plane3d plane;
v3d_t point = v3d_add(v3d_v(blockPosition), faceAdd[s]);
v3d_t normal = {
gCubeFaceNormalLookup[s][0],
gCubeFaceNormalLookup[s][1],
gCubeFaceNormalLookup[s][2] };
plane.setFromPointAndNormal(point, normal);
faceHitResults[s] = plane.doesLineSegmentIntersect(lastPos, pos, faceHitTimes[s]);
}
double soonestHit = 1000.0; // super high value
// this section sets the 'face' variable to the nearest face
for (int s = 0; s < NUM_BLOCK_SIDES; s++) {
if (faceHitResults[s]) {
if (faceHitTimes[s] > 0.0 && faceHitTimes[s] < soonestHit) {
soonestHit = faceHitTimes[s];
face = s;
}
}
}
return true;
}
lastPos = pos;
}
return false;
}