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(svn r23114) -Feature: [NewGRF] Ambient sound effect callback.

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michi_cc
2011-11-04 21:05:08 +00:00
parent 1a86603421
commit 84a103e112
7 changed files with 55 additions and 6 deletions
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46
src/newgrf_generic.cpp
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@@ -15,6 +15,9 @@
#include "newgrf_spritegroup.h"
#include "industrytype.h"
#include "core/bitmath_func.hpp"
#include "core/random_func.hpp"
#include "tile_map.h"
#include "newgrf_sound.h"
#include <list>
@@ -83,6 +86,14 @@ static void GenericCallbackSetTriggers(const ResolverObject *object, int trigger
static uint32 GenericCallbackGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
DEBUG(grf, 1, "Unhandled generic feature variable 0x%02X", variable);
*available = false;
return UINT_MAX;
}
static uint32 GenericAiCallbackGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
switch (variable) {
case 0x40: return object->grffile->cargo_map[object->u.generic.cargo_type];
@@ -115,12 +126,12 @@ static const SpriteGroup *GenericCallbackResolveReal(const ResolverObject *objec
}
static inline void NewGenericResolver(ResolverObject *res)
static inline void NewGenericResolver(ResolverObject *res, bool ai_callback)
{
res->GetRandomBits = &GenericCallbackGetRandomBits;
res->GetTriggers = &GenericCallbackGetTriggers;
res->SetTriggers = &GenericCallbackSetTriggers;
res->GetVariable = &GenericCallbackGetVariable;
res->GetVariable = ai_callback ? &GenericAiCallbackGetVariable : &GenericCallbackGetVariable;
res->ResolveReal = &GenericCallbackResolveReal;
res->callback = CBID_NO_CALLBACK;
@@ -181,7 +192,7 @@ uint16 GetAiPurchaseCallbackResult(uint8 feature, CargoID cargo_type, uint8 defa
{
ResolverObject object;
NewGenericResolver(&object);
NewGenericResolver(&object, true);
if (src_industry != IT_AI_UNKNOWN && src_industry != IT_AI_TOWN) {
const IndustrySpec *is = GetIndustrySpec(src_industry);
@@ -209,3 +220,32 @@ uint16 GetAiPurchaseCallbackResult(uint8 feature, CargoID cargo_type, uint8 defa
if (callback != CALLBACK_FAILED) callback = GB(callback, 0, 8);
return callback;
}
/**
* 'Execute' the ambient sound effect callback.
* @param tile Tile the sound effect should be generated for.
*/
void AmbientSoundEffectCallback(TileIndex tile)
{
assert(IsTileType(tile, MP_CLEAR) || IsTileType(tile, MP_TREES) || IsTileType(tile, MP_WATER));
/* Only run callback if enabled. */
if (!HasGrfMiscBit(GMB_AMBIENT_SOUND_CALLBACK)) return;
/* Only run every 1/200-th time. */
uint32 r; // Save for later
if (!Chance16R(1, 200, r)) return;
ResolverObject object;
/* Prepare resolver object. */
NewGenericResolver(&object, false);
object.callback = CBID_SOUNDS_AMBIENT_EFFECT;
object.callback_param1 = GetTileType(tile) << 28 | TileHeight(tile) << 24 | GB(r, 16, 8) << 16 | GetTerrainType(tile);
/* Run callback. */
const GRFFile *grf_file;
uint16 callback = GetGenericCallbackResult(GSF_SOUNDFX, &object, &grf_file);
if (callback != CALLBACK_FAILED) PlayTileSound(grf_file, callback, tile);
}