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 "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.
static uint16_t	GetCanalCallback (CallbackID callback, uint32_t param1, uint32_t param2, CanalFeature feature, TileIndex tile, std::span< int32_t > regs100={})
	Run a specific callback for canals.
uint	GetCanalSpriteOffset (CanalFeature feature, TileIndex tile, uint cur_offset)
	Get the new sprite offset for a water tile.

Variables
std::array< WaterFeature, CF_END >	_water_feature
	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, std::span< int32_t >  regs100 = {}  )

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.
[out]	regs100	Additional result values from registers 100+

Returns

Callback result or CALLBACK_FAILED if the callback failed.

Definition at line 158 of file newgrf_canal.cpp.

Referenced by GetCanalSpriteOffset().

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 139 of file newgrf_canal.cpp.

Referenced by DrawCanalWater(), DrawWaterEdges(), and DrawWaterLock().

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, CALLBACK_FAILED, CBID_CANALS_SPRITE_OFFSET, GetCanalCallback(), and SpriteOffset.

Referenced by DrawWaterSprite(), and DrawWaterTileStruct().

Variable Documentation

_water_feature

std::array<WaterFeature, CF_END> _water_feature

Table of canal 'feature' sprite groups.

Definition at line 20 of file newgrf_canal.cpp.

Referenced by CanalResolverObject::CanalResolverObject(), DrawCanalWater(), DrawWaterLock(), FinaliseCanals(), GetCanalSpriteOffset(), and ResetNewGRFData().