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(svn r21118) -Codechange: Name and deduplicate some magic numbers.

This commit is contained in:
frosch 2010-11-08 21:22:21 +00:00
parent 54c6e23f78
commit c0ea0ac301
1 changed files with 14 additions and 6 deletions
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20
src/aircraft_cmd.cpp
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@ -39,6 +39,12 @@
#include "table/strings.h"
static const uint ROTOR_Z_OFFSET = 5; ///< Z Offset between helicopter- and rotorsprite.
static const uint PLANE_HOLDING_ALTITUDE = 150; ///< Altitude of planes in holding pattern (= lowest flight altitude).
static const uint HELI_FLIGHT_ALTITUDE = 184; ///< Normal flight altitude of helicopters.
void Aircraft::UpdateDeltaXY(Direction direction)
{
this->x_offs = -1;
@ -319,7 +325,7 @@ CommandCost CmdBuildAircraft(TileIndex tile, DoCommandFlag flags, const Engine *
w->owner = _current_company;
w->x_pos = v->x_pos;
w->y_pos = v->y_pos;
w->z_pos = v->z_pos + 5;
w->z_pos = v->z_pos + ROTOR_Z_OFFSET;
w->vehstatus = VS_HIDDEN | VS_UNCLICKABLE;
w->spritenum = 0xFF;
w->subtype = AIR_ROTOR;
@ -494,7 +500,7 @@ void SetAircraftPosition(Aircraft *v, int x, int y, int z)
if (u != NULL) {
u->x_pos = x;
u->y_pos = y;
u->z_pos = z + 5;
u->z_pos = z + ROTOR_Z_OFFSET;
VehicleMove(u, true);
}
@ -623,7 +629,7 @@ byte GetAircraftFlyingAltitude(const Aircraft *v)
/* Make sure Aircraft fly no lower so that they don't conduct
* CFITs (controlled flight into terrain)
*/
byte base_altitude = 150;
byte base_altitude = PLANE_HOLDING_ALTITUDE;
/* Make sure eastbound and westbound planes do not "crash" into each
* other by providing them with vertical seperation
@ -762,13 +768,14 @@ static bool AircraftController(Aircraft *v)
count = UpdateAircraftSpeed(v);
if (count > 0) {
v->tile = 0;
byte z_dest = HELI_FLIGHT_ALTITUDE;
/* Reached altitude? */
if (v->z_pos >= 184) {
if (v->z_pos >= z_dest) {
v->cur_speed = 0;
return true;
}
SetAircraftPosition(v, v->x_pos, v->y_pos, min(v->z_pos + count, 184));
SetAircraftPosition(v, v->x_pos, v->y_pos, min(v->z_pos + count, z_dest));
}
}
return false;
@ -921,7 +928,8 @@ static bool AircraftController(Aircraft *v)
z = min(z + 2, GetAircraftFlyingAltitude(v));
}
if ((amd.flag & AMED_HOLD) && (z > 150)) z--;
/* Let the plane drop from normal flight altitude to holding pattern altitude */
if ((amd.flag & AMED_HOLD) && (z > PLANE_HOLDING_ALTITUDE)) z--;
if (amd.flag & AMED_LAND) {
if (st->airport.tile == INVALID_TILE) {