newgrf_canal.cpp File Reference

Implementation of NewGRF canals. More...

#include "stdafx.h"
#include "debug.h"
#include "newgrf_spritegroup.h"
#include "newgrf_canal.h"
#include "water.h"
#include "water_map.h"
#include "spritecache.h"
#include "safeguards.h"

Go to the source code of this file.

Data Structures
struct	CanalScopeResolver
	Scope resolver of a canal tile. More...
struct	CanalResolverObject
	Resolver object for canals. More...

Functions
SpriteID	GetCanalSprite (CanalFeature feature, TileIndex tile)
	Lookup the base sprite to use for a canal. More...
static uint16_t	GetCanalCallback (CallbackID callback, uint32_t param1, uint32_t param2, CanalFeature feature, TileIndex tile)
	Run a specific callback for canals. More...
uint	GetCanalSpriteOffset (CanalFeature feature, TileIndex tile, uint cur_offset)
	Get the new sprite offset for a water tile. More...

Variables
WaterFeature	_water_feature [CF_END]
	Table of canal 'feature' sprite groups.

Detailed Description

Implementation of NewGRF canals.

Definition in file newgrf_canal.cpp.

Function Documentation

GetCanalCallback()

static uint16_t GetCanalCallback ( CallbackID  callback, uint32_t  param1, uint32_t  param2, CanalFeature  feature, TileIndex  tile  )

static

Run a specific callback for canals.

Parameters

callback	Callback ID.
param1	Callback parameter 1.
param2	Callback parameter 2.
feature	For which feature to run the callback.
tile	Tile index of canal.

Returns

Callback result or CALLBACK_FAILED if the callback failed.

Definition at line 158 of file newgrf_canal.cpp.

GetCanalSprite()

SpriteID GetCanalSprite	(	CanalFeature	feature,
		TileIndex	tile
	)

Lookup the base sprite to use for a canal.

Parameters

feature	Which canal feature we want.
tile	Tile index of canal, if appropriate.

Returns

Base sprite returned by GRF, or 0 if none.

Definition at line 140 of file newgrf_canal.cpp.

References SpriteGroup::Resolve().

GetCanalSpriteOffset()

uint GetCanalSpriteOffset	(	CanalFeature	feature,
		TileIndex	tile,
		uint	cur_offset
	)

Get the new sprite offset for a water tile.

Parameters

tile	Tile index of the canal/water tile.
feature	For which feature to get the new sprite offset.
cur_offset	Current sprite offset.

Returns

New sprite offset.

Definition at line 171 of file newgrf_canal.cpp.

References _water_feature, CBM_CANAL_SPRITE_OFFSET, and HasBit().