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(svn r21239) -Codechange/Fix: [NewGRF] Use 0xFF instead of 0 as default value for visual effect. This makes setting train prop 22 to 0 actually work (Hirundo)

This commit is contained in:
rubidium 2010-11-18 14:20:03 +00:00
parent 61ff042460
commit 46186134c8
5 changed files with 13 additions and 3 deletions
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2
src/engine.cpp
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@ -85,6 +85,8 @@ Engine::Engine(VehicleType type, EngineID base)
this->info.base_life = 0xFF;
/* Set road vehicle tractive effort to the default value */
if (type == VEH_ROAD) this->u.road.tractive_effort = 0x4C;
/* Set visual effect to the default value */
if (type == VEH_TRAIN) this->u.rail.visual_effect = VE_DEFAULT;
return;
}

8
src/newgrf.cpp
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@ -48,6 +48,7 @@
#include "gui.h"
#include "vehicle_func.h"
#include "language.h"
#include "vehicle_base.h"
#include "table/strings.h"
#include "table/build_industry.h"
@ -710,8 +711,13 @@ static ChangeInfoResult RailVehicleChangeInfo(uint engine, int numinfo, int prop
break;
case 0x22: // Visual effect
/** @see note in engine.h about rvi->visual_effect */
rvi->visual_effect = buf->ReadByte();
/* Avoid accidentally setting visual_effect to the default value
* Since bit 6 (disable effects) is set anyways, we can safely erase some bits. */
if (rvi->visual_effect == VE_DEFAULT) {
assert(HasBit(rvi->visual_effect, VE_DISABLE_EFFECT));
SB(rvi->visual_effect, VE_TYPE_START, VE_TYPE_COUNT, 0);
}
break;
case 0x23: // Powered wagons weight bonus

2
src/table/engines.h
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@ -364,7 +364,7 @@ static const EngineInfo _orig_engine_info[] = {
* Tractive effort coefficient by default is the same as TTDPatch, 0.30*256=76
* Air drag value depends on the top speed of the vehicle.
*/
#define RVI(a, b, c, d, e, f, g, h, i, j, k) { a, b, c, {j}, d, e, f, g, h, k, i, 0, 0, 0, 0, 0, 76, 0, 0 }
#define RVI(a, b, c, d, e, f, g, h, i, j, k) { a, b, c, {j}, d, e, f, g, h, k, i, 0, 0, 0, VE_DEFAULT, 0, 76, 0, 0 }
#define M RAILVEH_MULTIHEAD
#define W RAILVEH_WAGON
#define G RAILVEH_SINGLEHEAD

2
src/vehicle.cpp
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@ -1864,7 +1864,7 @@ void Vehicle::UpdateVisualEffect(bool allow_power_change)
const Engine *e = Engine::Get(this->engine_type);
if (this->type == VEH_TRAIN) {
if (e->u.rail.visual_effect != 0) {
if (e->u.rail.visual_effect != VE_DEFAULT) {
this->vcache.cached_vis_effect = e->u.rail.visual_effect;
} else {
Train *t = Train::From(this);

2
src/vehicle_base.h
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@ -79,6 +79,8 @@ enum VisualEffect {
VE_DISABLE_EFFECT = 6, ///< Flag to disable visual effect
VE_DISABLE_WAGON_POWER = 7, ///< Flag to disable wagon power
VE_DEFAULT = 0xFF, ///< Default value to indicate that visual effect should be based on engine class
};
/** Cached often queried values common to all vehicles. */