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(svn r9707) -Codechange: Add some support for NewGRF var 7D, temporary storage array.

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This commit is contained in:
peter1138 2007-04-21 07:27:16 +00:00
parent 01ae38e3d7
commit e5a314399a
2 changed files with 10 additions and 0 deletions
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8
src/newgrf_spritegroup.cpp
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@ -76,6 +76,8 @@ void InitializeSpriteGroupPool()
_spritegroup_count = 0;
}
static uint32 _temp_store[0x110];
static inline uint32 GetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
{
@ -96,6 +98,8 @@ static inline uint32 GetVariable(const ResolverObject *object, byte variable, by
case 0x1C: return object->last_value;
case 0x20: return _opt.landscape == LT_ARCTIC ? GetSnowLine() : 0xFF;
case 0x7D: return _temp_store[parameter];
/* Not a common variable, so evalute the feature specific variables */
default: return object->GetVariable(object, variable, parameter, available);
}
@ -133,6 +137,10 @@ static U EvalAdjustT(const DeterministicSpriteGroupAdjust *adjust, U last_value,
case DSGA_OP_AND: return last_value & value;
case DSGA_OP_OR: return last_value | value;
case DSGA_OP_XOR: return last_value ^ value;
case DSGA_OP_STO:
if (value < lengthof(_temp_store)) _temp_store[value] = last_value;
return last_value;
case DSGA_OP_RST: return value;
default: return value;
}
}

2
src/newgrf_spritegroup.h
View File

@ -60,6 +60,8 @@ enum DeterministicSpriteGroupAdjustOperation {
DSGA_OP_AND, ///< a & b
DSGA_OP_OR, ///< a | b
DSGA_OP_XOR, ///< a ^ b
DSGA_OP_STO, ///< store a into temporary storage, indexed by b. return a
DSGA_OP_RST, ///< return b
};