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C4MapScriptAlgoFilter Class Reference

#include <C4MapScript.h>

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Public Member Functions

 C4MapScriptAlgoFilter (const C4PropList *props)
 
bool operator() (int32_t x, int32_t y, uint8_t &fg, uint8_t &bg) const override
 
void Clear ()
 

Protected Member Functions

bool GetXYProps (const C4PropList *props, C4PropertyName k, int32_t *out_xy, bool zero_defaults)
 

Protected Attributes

std::vector< C4MapScriptAlgo * > operands
 

Detailed Description

Definition at line 259 of file C4MapScript.h.

Constructor & Destructor Documentation

C4MapScriptAlgoFilter::C4MapScriptAlgoFilter ( const C4PropList props)

Definition at line 472 of file C4MapScriptAlgo.cpp.

References C4PropList::GetProperty(), C4MapScriptMatTexMask::Init(), and P_Filter.

472  : C4MapScriptAlgoModifier(props,1,1)
473 {
474  // Get MAPALGO_Filter properties
475  C4Value spec;
476  if (!props->GetProperty(P_Filter, &spec))
477  throw C4AulExecError("MapScriptAlgoFilter without Filter property.");
478  filter.Init(spec);
479 }
bool GetProperty(C4PropertyName k, C4Value *pResult) const
Definition: C4PropList.h:101
C4MapScriptAlgoModifier(const C4PropList *props, int32_t min_ops=0, int32_t max_ops=0)
void Init(const C4Value &spec)

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Member Function Documentation

void C4MapScriptAlgoModifier::Clear ( )
inherited

Definition at line 263 of file C4MapScriptAlgo.cpp.

References C4MapScriptAlgoModifier::operands.

Referenced by C4MapScriptAlgoModifier::C4MapScriptAlgoModifier(), and C4MapScriptAlgoModifier::~C4MapScriptAlgoModifier().

264 {
265  // Child algos are owned by this algo, so delete them
266  for (auto & operand : operands) delete operand;
267  operands.clear();
268 }
std::vector< C4MapScriptAlgo * > operands
Definition: C4MapScript.h:163

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bool C4MapScriptAlgo::GetXYProps ( const C4PropList props,
C4PropertyName  k,
int32_t *  out_xy,
bool  zero_defaults 
)
protectedinherited

Definition at line 26 of file C4MapScriptAlgo.cpp.

References FormatString(), C4Value::getArray(), C4String::GetCStr(), C4Value::getInt(), C4ValueArray::GetItem(), C4PropList::GetProperty(), C4ValueArray::GetSize(), C4PropList::HasProperty(), C4StringTable::P, and Strings.

Referenced by C4MapScriptAlgoBorder::C4MapScriptAlgoBorder(), and C4MapScriptAlgoTurbulence::C4MapScriptAlgoTurbulence().

27 {
28  // Evaluate property named "k" in proplist props to store two numbers in out_xy:
29  // If props->k is a single integer, fill both numbers in out_xy with it
30  // If props->k is an array, check that it contains two numbers and store them in out_xy
31  if (!props->HasProperty(&Strings.P[k]))
32  {
33  if (zero_defaults) out_xy[0] = out_xy[1] = 0;
34  return false;
35  }
36  C4Value val; C4ValueArray *arr;
37  props->GetProperty(k, &val);
38  if ((arr = val.getArray()))
39  {
40  if (arr->GetSize() != 2)
41  throw C4AulExecError(FormatString(R"(C4MapScriptAlgo: Expected either integer or array with two integer elements in property "%s".)", Strings.P[k].GetCStr()).getData());
42  out_xy[0] = arr->GetItem(0).getInt();
43  out_xy[1] = arr->GetItem(1).getInt();
44  }
45  else
46  {
47  out_xy[0] = out_xy[1] = val.getInt();
48  }
49  return true;
50 }
C4String P[P_LAST]
bool GetProperty(C4PropertyName k, C4Value *pResult) const
Definition: C4PropList.h:101
const char * GetCStr() const
Definition: C4StringTable.h:49
const C4Value & GetItem(int32_t iElem) const
Definition: C4ValueArray.h:38
C4StringTable Strings
Definition: C4Globals.cpp:42
C4ValueArray * getArray() const
Definition: C4Value.h:118
int32_t GetSize() const
Definition: C4ValueArray.h:36
int32_t getInt() const
Definition: C4Value.h:112
bool HasProperty(C4String *k) const
Definition: C4PropList.h:118
StdStrBuf FormatString(const char *szFmt,...)
Definition: StdBuf.cpp:270

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bool C4MapScriptAlgoFilter::operator() ( int32_t  x,
int32_t  y,
uint8_t &  fg,
uint8_t &  bg 
) const
overridevirtual

Implements C4MapScriptAlgo.

Definition at line 481 of file C4MapScriptAlgo.cpp.

References C4MapScriptAlgoModifier::operands.

482 {
483  // Evaluate MAPALGO_Filter at x,y:
484  // Return original color if it's marked to go through filter
485  bool col = (*operands[0])(x,y, fg, bg);
486  if (!col) fg = bg = 0;
487  return filter(fg, bg);
488 }
std::vector< C4MapScriptAlgo * > operands
Definition: C4MapScript.h:163

Member Data Documentation


The documentation for this class was generated from the following files: