void UnitBase::engageTarget() {
if(target && (target.getObjPointer() == NULL)) {
// the target does not exist anymore
releaseTarget();
return;
}
if(target && (target.getObjPointer()->isActive() == false)) {
// the target changed its state to inactive
releaseTarget();
return;
}
if(target && !targetFriendly && !canAttack(target.getObjPointer())) {
// the (non-friendly) target cannot be attacked anymore
releaseTarget();
return;
}
if(target && !targetFriendly && !forced && !isInAttackRange(target.getObjPointer())) {
// the (non-friendly) target left the attack mode range (and we were not forced to attack it)
releaseTarget();
return;
}
if(target) {
// we have a target unit or structure
Coord targetLocation = target.getObjPointer()->getClosestPoint(location);
if(destination != targetLocation) {
// the location of the target has moved
// => recalculate path
clearPath();
}
targetDistance = blockDistance(location, targetLocation);
Sint8 newTargetAngle = lround(8.0f/256.0f*destinationAngle(location, targetLocation));
if(newTargetAngle == 8) {
newTargetAngle = 0;
}
if(bFollow) {
// we are following someone
setDestination(targetLocation);
return;
}
if(targetDistance > getWeaponRange()) {
// we are not in attack range
// => follow the target
setDestination(targetLocation);
return;
}
// we are in attack range
if(targetFriendly && !forced) {
// the target is friendly and we only attack these if were forced to do so
return;
}
if(goingToRepairYard) {
// we are going to the repair yard
// => we do not need to change the destination
targetAngle = INVALID;
} else if(attackMode == CAPTURE) {
// we want to capture the target building
setDestination(targetLocation);
targetAngle = INVALID;
} else if(isTracked() && target.getObjPointer()->isInfantry() && currentGameMap->tileExists(targetLocation) && !currentGameMap->getTile(targetLocation)->isMountain() && forced) {
// we squash the infantry unit because we are forced to
setDestination(targetLocation);
targetAngle = INVALID;
} else {
// we decide to fire on the target thus we can stop moving
setDestination(location);
targetAngle = newTargetAngle;
}
if(getCurrentAttackAngle() == newTargetAngle) {
attack();
}
} else if(attackPos) {
// we attack a position
targetDistance = blockDistance(location, attackPos);
Sint8 newTargetAngle = lround(8.0f/256.0f*destinationAngle(location, attackPos));
if(newTargetAngle == 8) {
newTargetAngle = 0;
}
if(targetDistance <= getWeaponRange()) {
// we are in weapon range thus we can stop moving
setDestination(location);
targetAngle = newTargetAngle;
if(getCurrentAttackAngle() == newTargetAngle) {
attack();
}
} else {
targetAngle = INVALID;
}
}
}
void GLTexture::download(Bitmap *bitmap) {
if (bitmap == NULL)
bitmap = getBitmap();
Assert(bitmap != NULL);
activateTarget();
GLenum format, dataFormat;
switch (bitmap->getComponentFormat()) {
case Bitmap::EUInt8: dataFormat = GL_UNSIGNED_BYTE; break;
case Bitmap::EUInt16: dataFormat = GL_UNSIGNED_SHORT; break;
case Bitmap::EUInt32: dataFormat = GL_UNSIGNED_INT; break;
case Bitmap::EFloat16: dataFormat = GL_HALF_FLOAT_ARB; break;
case Bitmap::EFloat32: dataFormat = GL_FLOAT; break;
case Bitmap::EFloat64: dataFormat = GL_DOUBLE; break;
default:
Log(EError, "GLTexture::download(): Unknown/unsupported component format %i!",
(int) bitmap->getComponentFormat());
return;
}
switch (bitmap->getPixelFormat()) {
case Bitmap::ELuminance:
if (m_fbType == EDepthBuffer)
format = GL_DEPTH_COMPONENT;
else
format = GL_LUMINANCE;
break;
case Bitmap::ELuminanceAlpha: format = GL_LUMINANCE_ALPHA; break;
case Bitmap::ERGB: format = GL_RGB; break;
case Bitmap::ERGBA: format = GL_RGBA; break;
default:
Log(EError, "GLTexture::download(): Unknown/unsupported pixel format %i!",
(int) bitmap->getPixelFormat());
return;
}
glPixelStorei(GL_PACK_ALIGNMENT, 1);
switch (m_type) {
case ETexture2D:
glReadPixels(0, 0, bitmap->getWidth(), bitmap->getHeight(), format,
dataFormat, bitmap->getUInt8Data());
/* OpenGL associates (0, 0) with the lower left position and
the resulting bitmap must thus be vertically flipped. */
bitmap->flipVertically();
break;
case ETextureCubeMap:
for (int i=0; i<6; ++i) {
activateSide(i);
bitmap = getBitmap(i);
glReadPixels(0, 0, bitmap->getWidth(), bitmap->getHeight(), format,
dataFormat, bitmap->getUInt8Data());
bitmap->flipVertically();
}
break;
default:
Log(EError, "download(): Unsupported texture type!");
}
releaseTarget();
}