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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "StarburstLauncher.h"
#include "WeaponDef.h"
#include "Game/TraceRay.h"
#include "Map/Ground.h"
#include "Sim/Projectiles/WeaponProjectiles/WeaponProjectileFactory.h"
#include "Sim/Units/Unit.h"
CR_BIND_DERIVED(CStarburstLauncher, CWeapon, (NULL, NULL))
CR_REG_METADATA(CStarburstLauncher, (
CR_MEMBER(uptime),
CR_MEMBER(tracking),
CR_RESERVED(8)
))
CStarburstLauncher::CStarburstLauncher(CUnit* owner, const WeaponDef* def): CWeapon(owner, def)
{
tracking = ((def->tracks)? weaponDef->turnrate: 0);
uptime = (def->uptime * GAME_SPEED);
}
void CStarburstLauncher::Update(void)
{
if (targetType != Target_None) {
weaponPos = owner->GetObjectSpacePos(relWeaponPos);
weaponMuzzlePos = owner->GetObjectSpacePos(relWeaponMuzzlePos);
// the aiming upward is apperently implicid so aim toward target
wantedDir = (targetPos - weaponPos).Normalize();
}
CWeapon::Update();
}
void CStarburstLauncher::FireImpl(bool scriptCall)
{
const float3 speed = ((weaponDef->fixedLauncher)? weaponDir: UpVector) * weaponDef->startvelocity;
const float3 aimError = (gs->randVector() * SprayAngleExperience() + SalvoErrorExperience());
ProjectileParams params = GetProjectileParams();
params.pos = weaponMuzzlePos + UpVector * 2.0f;
params.end = targetPos;
params.speed = speed;
params.error = aimError;
params.ttl = 200; //???
params.tracking = tracking;
params.maxRange = (weaponDef->flighttime > 0 || weaponDef->fixedLauncher)? MAX_PROJECTILE_RANGE: range;
WeaponProjectileFactory::LoadProjectile(params);
}
bool CStarburstLauncher::HaveFreeLineOfFire(const float3& pos, bool userTarget, const CUnit* unit) const
{
const float3& wdir = weaponDef->fixedLauncher? weaponDir: UpVector;
if (TraceRay::TestCone(weaponMuzzlePos, wdir, 100.0f, 0.0f, owner->allyteam, avoidFlags, owner)) {
return false;
}
return true;
}
float CStarburstLauncher::GetRange2D(float yDiff) const
{
return range + (yDiff * heightMod);
}
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