cpp/openttd-patchpack/source Files · src/newgrf_canal.cpp

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

r7939:523d421f9d0c 2.0 KiB text/x-c Show Annotation Show as Raw Download as Raw

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).

/* $Id$ */

#include "stdafx.h"
#include "openttd.h"
#include "variables.h"
#include "landscape.h"
#include "debug.h"
#include "newgrf.h"
#include "newgrf_callbacks.h"
#include "newgrf_commons.h"
#include "newgrf_spritegroup.h"
#include "newgrf_canal.h"


/** Table of canal 'feature' sprite groups */
const SpriteGroup *_canal_sg[CF_END];


/* Random bits and triggers are not supported for canals, so the following
 * three functions are stubs. */
static uint32 CanalGetRandomBits(const ResolverObject *object)
{
	return 0;
}


static uint32 CanalGetTriggers(const ResolverObject *object)
{
	return 0;
}


static void CanalSetTriggers(const ResolverObject *object, int triggers)
{
	return;
}


static uint32 CanalGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
	TileIndex tile = object->u.canal.tile;

	switch (variable) {
		case 0x80:
			return GetTileZ(tile) / TILE_HEIGHT;

		case 0x81:
			return GetTerrainType(tile);
	}

	DEBUG(grf, 1, "Unhandled canal property 0x%02X", variable);

	*available = false;
	return 0;
}


static const SpriteGroup *CanalResolveReal(const ResolverObject *object, const SpriteGroup *group)
{
	if (group->g.real.num_loaded == 0) return NULL;

	return group->g.real.loaded[0];
}


static void NewCanalResolver(ResolverObject *res, TileIndex tile)
{
	res->GetRandomBits = &CanalGetRandomBits;
	res->GetTriggers   = &CanalGetTriggers;
	res->SetTriggers   = &CanalSetTriggers;
	res->GetVariable   = &CanalGetVariable;
	res->ResolveReal   = &CanalResolveReal;

	res->u.canal.tile = tile;

	res->callback        = CBID_NO_CALLBACK;
	res->callback_param1 = 0;
	res->callback_param2 = 0;
	res->last_value      = 0;
	res->trigger         = 0;
	res->reseed          = 0;
}


SpriteID GetCanalSprite(CanalFeature feature, TileIndex tile)
{
	ResolverObject object;
	const SpriteGroup *group;

	NewCanalResolver(&object, tile);

	group = Resolve(_canal_sg[feature], &object);
	if (group == NULL || group->type != SGT_RESULT) return 0;

	return group->g.result.sprite;
}