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newgrf_engine.h
author bjarni
Thu, 05 Oct 2006 12:59:28 +0000
changeset 4739 e626ef1b522e
parent 4656 9c1d8c4d3e60
child 4812 d71b2e7d11e0
permissions -rw-r--r--
(svn r6651) -Coding feature: added the windowevent WE_INVALIDATE_DATA
This gives the ability to invalidate some window data and recalculate as needed instead of doing it for each WE_PAINT

This event is called right away when using InvalidateWindowData(), so it may be a good idea to set a bool or similar in the window
or similar and then act on that bool in WE_PAINT instead of doing a lot of stuff in WE_INVALIDATE_DATA as it might be called more than once before WE_PAINT is called

InvalidateWindowData() will not automatically repaint the window, so if you want to repaint it as well, you need to mark it dirty as well.

Made the depot windows use WE_INVALIDATE_DATA to set when to generate the engine and wagon lists instead of at each redraw
It makes no sense to regenerate the list when say using the scrollbar if we know that no vehicle have entered or left the list

NOTE: currently there is a piece of code to generate the list when it's not needed and compare it to the stored list and assert if they mismatch
This check is somewhat slow and kills the whole idea of WE_INVALIDATE_DATA, so it's a short lived one to verify that InvalidateWindowData() is used everywhere where it's needed 
/* $Id$ */

#ifndef NEWGRF_ENGINE_H
#define NEWGRF_ENGINE_H

#include "newgrf.h"
#include "direction.h"
#include "newgrf_cargo.h"

/** @file newgrf_engine.h
 */

extern int _traininfo_vehicle_pitch;
extern int _traininfo_vehicle_width;

VARDEF const uint32 _default_refitmasks[NUM_VEHICLE_TYPES];
extern const CargoID _global_cargo_id[NUM_LANDSCAPE][NUM_CARGO];
extern const uint32 _landscape_global_cargo_mask[NUM_LANDSCAPE];
extern const CargoID _local_cargo_id_ctype[NUM_GLOBAL_CID];
extern const uint32 cargo_classes[16];

void SetWagonOverrideSprites(EngineID engine, const struct SpriteGroup *group, byte *train_id, int trains);
void SetCustomEngineSprites(EngineID engine, byte cargo, const struct SpriteGroup *group);
void SetRotorOverrideSprites(EngineID engine, const struct SpriteGroup *group);
SpriteID GetCustomEngineSprite(EngineID engine, const Vehicle* v, Direction direction);
SpriteID GetRotorOverrideSprite(EngineID engine, const Vehicle* v, bool info_view);
#define GetCustomRotorSprite(v, i) GetRotorOverrideSprite(v->engine_type, v, i)
#define GetCustomRotorIcon(et) GetRotorOverrideSprite(et, NULL, true)

/* Forward declaration of GRFFile, to avoid unnecessary inclusion of newgrf.h
 * elsewhere... */
struct GRFFile;

void SetEngineGRF(EngineID engine, const struct GRFFile *file);
const struct GRFFile *GetEngineGRF(EngineID engine);
uint32 GetEngineGRFID(EngineID engine);

uint16 GetVehicleCallback(uint16 callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v);
uint16 GetVehicleCallbackParent(uint16 callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v, const Vehicle *parent);
bool UsesWagonOverride(const Vehicle *v);
#define GetCustomVehicleSprite(v, direction) GetCustomEngineSprite(v->engine_type, v, direction)
#define GetCustomVehicleIcon(et, direction) GetCustomEngineSprite(et, NULL, direction)

typedef enum VehicleTrigger {
	VEHICLE_TRIGGER_NEW_CARGO     = 1,
	// Externally triggered only for the first vehicle in chain
	VEHICLE_TRIGGER_DEPOT         = 2,
	// Externally triggered only for the first vehicle in chain, only if whole chain is empty
	VEHICLE_TRIGGER_EMPTY         = 4,
	// Not triggered externally (called for the whole chain if we got NEW_CARGO)
	VEHICLE_TRIGGER_ANY_NEW_CARGO = 8,
} VehicleTrigger;
void TriggerVehicle(Vehicle *veh, VehicleTrigger trigger);

void SetCustomEngineName(EngineID engine, StringID name);
StringID GetCustomEngineName(EngineID engine);

void UnloadWagonOverrides(void);
void UnloadRotorOverrideSprites(void);
void UnloadCustomEngineSprites(void);
void UnloadCustomEngineNames(void);

void ResetEngineListOrder(void);
EngineID GetRailVehAtPosition(EngineID pos);
void AlterRailVehListOrder(EngineID engine, EngineID target);

#endif /* NEWGRF_ENGINE_H */
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