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@ r9334:6d079081ec24
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Location: cpp/openttd-patchpack/source/src/newgrf_canal.cpp
r9334:6d079081ec24
2.3 KiB
text/x-c
(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
Initial concept : TTDPatch (moreairpots), Initial code : Pasky
Thanks to BigBB (help coding), Smatz Skidd13 and frosch for bugcatches and advices
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/** @file newgrf_canal.cpp Implementation of NewGRF canals. */
#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"
#include "tile_map.h"
#include "water_map.h"
/** Table of canal 'feature' sprite groups */
WaterFeature _water_feature[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 random bits only for water tiles, not station tiles */
return IsTileType(object->u.canal.tile, MP_WATER) ? GetWaterTileRandomBits(object->u.canal.tile) : 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);
case 0x83:
return GetWaterTileRandomBits(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;
res->count = 0;
}
SpriteID GetCanalSprite(CanalFeature feature, TileIndex tile)
{
ResolverObject object;
const SpriteGroup *group;
NewCanalResolver(&object, tile);
group = Resolve(_water_feature[feature].group, &object);
if (group == NULL || group->type != SGT_RESULT) return 0;
return group->g.result.sprite;
}
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