Files @ r7939:523d421f9d0c
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Location: cpp/openttd-patchpack/source/src/articulated_vehicles.cpp

egladil
(svn r11492) -Codechange: [OSX] Split the cocoa video driver into several files. The reason for this is that the fullscreen and windowed mode api are separate from each other in OS X and thus the driver actual is two drivers in one. This split is to make the code more readable and to prepare for replacing the Quickdraw windowed mode code which uses apis deprecated as of OS X 10.5 (and maybe earlier).
/* $Id$ */

/** @file articulated_vehicles.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "functions.h"
#include "command.h"
#include "vehicle.h"
#include "articulated_vehicles.h"
#include "engine.h"
#include "train.h"
#include "roadveh.h"
#include "newgrf_callbacks.h"
#include "newgrf_engine.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 || callback == 0xFF) break;
	}

	delete v;

	return i - 1;
}

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 || callback == 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 = GetFirstEngineOfType(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);
	}
}