Files @ r9334:6d079081ec24
Branch filter:

Location: cpp/openttd-patchpack/source/src/articulated_vehicles.cpp

belugas
(svn r13226) -Feature: Allow to have more than only two airports per town. The number of airports is now controlled by the noise each of them generates, the distance from town's center and how tolerant the town is.
Initial concept : TTDPatch (moreairpots), Initial code : Pasky
Thanks to BigBB (help coding), Smatz Skidd13 and frosch for bugcatches and advices
/* $Id$ */

/** @file articulated_vehicles.cpp Implementation of articulated vehicles. */

#include "stdafx.h"
#include "openttd.h"
#include "articulated_vehicles.h"
#include "train.h"
#include "roadveh.h"
#include "newgrf_callbacks.h"
#include "newgrf_engine.h"
#include "vehicle_func.h"

uint CountArticulatedParts(EngineID engine_type, bool purchase_window)
{
	if (!HasBit(EngInfo(engine_type)->callbackmask, CBM_VEHICLE_ARTIC_ENGINE)) return 0;

	Vehicle *v = NULL;;
	if (!purchase_window) {
		v = new InvalidVehicle();
		v->engine_type = engine_type;
	}

	uint i;
	for (i = 1; i < MAX_UVALUE(EngineID); i++) {
		uint16 callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, i, 0, engine_type, v);
		if (callback == CALLBACK_FAILED || GB(callback, 0, 8) == 0xFF) break;
	}

	delete v;

	return i - 1;
}


uint16 *GetCapacityOfArticulatedParts(EngineID engine, VehicleType type)
{
	static uint16 capacity[NUM_CARGO];
	memset(capacity, 0, sizeof(capacity));

	if (type == VEH_TRAIN) {
		const RailVehicleInfo *rvi = RailVehInfo(engine);
		capacity[rvi->cargo_type] = rvi->capacity;
		if (rvi->railveh_type == RAILVEH_MULTIHEAD) capacity[rvi->cargo_type] += rvi->capacity;
	} else if (type == VEH_ROAD) {
		const RoadVehicleInfo *rvi = RoadVehInfo(engine);
		capacity[rvi->cargo_type] = rvi->capacity;
	}

	if (!HasBit(EngInfo(engine)->callbackmask, CBM_VEHICLE_ARTIC_ENGINE)) return capacity;

	for (uint i = 1; i < MAX_UVALUE(EngineID); i++) {
		uint16 callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, i, 0, engine, NULL);
		if (callback == CALLBACK_FAILED || GB(callback, 0, 8) == 0xFF) break;

		EngineID artic_engine = GetNewEngineID(GetEngineGRF(engine), type, GB(callback, 0, 7));

		if (type == VEH_TRAIN) {
			const RailVehicleInfo *rvi = RailVehInfo(artic_engine);
			capacity[rvi->cargo_type] += GetEngineProperty(artic_engine, 0x14, rvi->capacity);
		} else if (type == VEH_ROAD) {
			const RoadVehicleInfo *rvi = RoadVehInfo(artic_engine);
			capacity[rvi->cargo_type] += GetEngineProperty(artic_engine, 0x0F, rvi->capacity);
		}
	}

	return capacity;
}


void AddArticulatedParts(Vehicle **vl, VehicleType type)
{
	const Vehicle *v = vl[0];
	Vehicle *u = vl[0];

	if (!HasBit(EngInfo(v->engine_type)->callbackmask, CBM_VEHICLE_ARTIC_ENGINE)) return;

	for (uint i = 1; i < MAX_UVALUE(EngineID); i++) {
		uint16 callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, i, 0, v->engine_type, v);
		if (callback == CALLBACK_FAILED || GB(callback, 0, 8) == 0xFF) return;

		/* Attempt to use pre-allocated vehicles until they run out. This can happen
		 * if the callback returns different values depending on the cargo type. */
		u->SetNext(vl[i]);
		if (u->Next() == NULL) return;

		Vehicle *previous = u;
		u = u->Next();

		EngineID engine_type = GetNewEngineID(GetEngineGRF(v->engine_type), type, GB(callback, 0, 7));
		bool flip_image = HasBit(callback, 7);

		/* get common values from first engine */
		u->direction = v->direction;
		u->owner = v->owner;
		u->tile = v->tile;
		u->x_pos = v->x_pos;
		u->y_pos = v->y_pos;
		u->z_pos = v->z_pos;
		u->build_year = v->build_year;
		u->vehstatus = v->vehstatus & ~VS_STOPPED;

		u->cargo_subtype = 0;
		u->max_speed = 0;
		u->max_age = 0;
		u->engine_type = engine_type;
		u->value = 0;
		u->subtype = 0;
		u->cur_image = 0xAC2;
		u->random_bits = VehicleRandomBits();

		switch (type) {
			default: NOT_REACHED();

			case VEH_TRAIN: {
				const RailVehicleInfo *rvi_artic = RailVehInfo(engine_type);

				u = new (u) Train();
				previous->SetNext(u);
				u->u.rail.track = v->u.rail.track;
				u->u.rail.railtype = v->u.rail.railtype;
				u->u.rail.first_engine = v->engine_type;

				u->spritenum = rvi_artic->image_index;
				u->cargo_type = rvi_artic->cargo_type;
				u->cargo_cap = rvi_artic->capacity;

				SetArticulatedPart(u);
			} break;

			case VEH_ROAD: {
				const RoadVehicleInfo *rvi_artic = RoadVehInfo(engine_type);

				u = new (u) RoadVehicle();
				previous->SetNext(u);
				u->u.road.first_engine = v->engine_type;
				u->u.road.cached_veh_length = GetRoadVehLength(u);
				u->u.road.state = RVSB_IN_DEPOT;

				u->u.road.roadtype = v->u.road.roadtype;
				u->u.road.compatible_roadtypes = v->u.road.compatible_roadtypes;

				u->spritenum = rvi_artic->image_index;
				u->cargo_type = rvi_artic->cargo_type;
				u->cargo_cap = rvi_artic->capacity;

				SetRoadVehArticPart(u);
			} break;
		}

		if (flip_image) u->spritenum++;

		VehiclePositionChanged(u);
	}
}