Added a Font _font variable to the engine instance. Fixed font colour handling by replacing the appropriate colours before drawing. Added Font::setColour() method for changing the current font colour. Added include guards to draci/font.h. Moved kFontBig and kFontSmall constants to draci/font.cpp to prevent redefinition errors.

svn-id: r41524

4 files changed, 88 insertions, 12 deletions

diff --git a/engines/draci/draci.cpp b/engines/draci/draci.cpp
index a75080d31d..103f595a12 100644
--- a/engines/draci/draci.cpp
+++ b/engines/draci/draci.cpp
@@ -49,7 +49,7 @@ DraciEngine::DraciEngine(OSystem *syst, const ADGameDescription *gameDesc)
  
 	// However this is the place to specify all default directories
 	//Common::File::addDefaultDirectory(_gameDataPath + "sound/");
- 
+ 	
 	// Here is the right place to set up the engine specific debug levels
 	Common::addDebugChannel(kDraciGeneralDebugLevel, "general", "Draci general debug level");
 	Common::addDebugChannel(kDraciBytecodeDebugLevel, "bytecode", "GPL bytecode instructions");
@@ -63,6 +63,9 @@ int DraciEngine::init() {
 	// Initialize graphics using following:
 	initGraphics(320, 200, false);
 
+	// Load default font
+	_font.setFont(kFontBig);
+
 	// Basic archive test
 	debugC(2, kDraciGeneralDebugLevel, "Running archive tests...");	
 	Common::String path("INIT.DFW");	
@@ -132,21 +135,20 @@ int DraciEngine::go() {
 	_system->fillScreen(255);
 
 	// Draw big string
-	Font font(kFontBig);
 	Common::String testString = "Testing, testing, read all about it!";
 	Graphics::Surface *surf = _system->lockScreen();
-	font.drawString(surf, testString, 
-		(320 - font.getStringWidth(testString, 1)) / 2, 130, 1);
+	_font.drawString(surf, testString, 
+		(320 - _font.getStringWidth(testString, 1)) / 2, 130, 1);
 
 	// Draw small string
-	font.setFont(kFontSmall);
+	_font.setFont(kFontSmall);
 	testString = "I'm smaller than the font above me.";
-	font.drawString(surf, testString, 
-		(320 - font.getStringWidth(testString, 1)) / 2, 150, 1);
+	_font.drawString(surf, testString, 
+		(320 - _font.getStringWidth(testString, 1)) / 2, 150, 1);
 
 	// Overflow handling test
 	testString = "Checking overflooooooooooooooooooooooooow...";
-	font.drawString(surf, testString, 50, 170, 1);
+	_font.drawString(surf, testString, 50, 170, 1);
 
 	_system->unlockScreen();
 	_system->updateScreen();
diff --git a/engines/draci/draci.h b/engines/draci/draci.h
index aabbe4482b..8a0e073101 100644
--- a/engines/draci/draci.h
+++ b/engines/draci/draci.h
@@ -30,6 +30,8 @@
 #include "engines/engine.h"
 #include "engines/advancedDetector.h"
 
+#include "draci/font.h"
+
 namespace Draci {
 
 class DraciEngine : public Engine {
@@ -43,6 +45,8 @@ public:
 
 	bool hasFeature(Engine::EngineFeature f) const;
 
+	Font _font;
+
 private:
 	Common::RandomSource _rnd;
 };
diff --git a/engines/draci/font.cpp b/engines/draci/font.cpp
index 104b341fd1..99f1d37a23 100644
--- a/engines/draci/font.cpp
+++ b/engines/draci/font.cpp
@@ -30,10 +30,25 @@
 
 namespace Draci {
 
+const Common::String kFontSmall("Small.fon");
+const Common::String kFontBig("Big.fon"); 
+
+Font::Font() :
+	_fontHeight(0), _maxCharWidth(0), 
+	_charWidths(NULL), _charData(0) {
+	
+	setFont(kFontBig);
+
+	_currentFontColour = _fontColour1;
+}
+
 Font::Font(const Common::String &filename) : 
 	_fontHeight(0), _maxCharWidth(0), 
 	_charWidths(NULL), _charData(0) { 
+
 	setFont(filename);
+
+	_currentFontColour = _fontColour1;
 }
 
 Font::~Font() {
@@ -41,6 +56,15 @@ Font::~Font() {
 }
 
 /**
+ * @brief Sets the varying font colour
+ * @param colour The new font colour
+ */
+
+void Font::setColour(uint8 colour) {
+	_currentFontColour = colour;
+}
+
+/**
  * @brief Loads fonts from a file
  * @param path Path to font file
  * @return true if the font was loaded successfully, false otherwise
@@ -135,9 +159,31 @@ void Font::drawChar(Graphics::Surface *dst, uint8 chr, int tx, int ty) const {
 	for (int y = 0; y < yPixelsToDraw; ++y) {
 		for (int x = 0; x <= xPixelsToDraw; ++x) {
 
-			// Paint pixel
 			int curr = y * _maxCharWidth + x;
-			ptr[x] = _charData[charOffset + curr];
+			int colour = _charData[charOffset + curr];
+
+			// Replace colour with font colours
+			switch (colour) {
+
+			case 254:
+				colour = _currentFontColour;
+				break;
+
+			case 253:
+				colour = _fontColour2;
+				break;
+
+			case 252:
+				colour = _fontColour3;
+				break;
+
+			case 251:
+				colour = _fontColour4;
+				break;
+			}
+			
+			// Paint pixel
+			ptr[x] = colour;
 		}
 
 		// Advance to next row
diff --git a/engines/draci/font.h b/engines/draci/font.h
index ddc6eaec7e..7a50f4099d 100644
--- a/engines/draci/font.h
+++ b/engines/draci/font.h
@@ -23,12 +23,15 @@
  *
  */
 
+#ifndef FONT_H
+#define FONT_H
+
 #include "graphics/font.h"
 
 namespace Draci {
 
-const Common::String kFontSmall("Small.fon");
-const Common::String kFontBig("Big.fon"); 
+extern const Common::String kFontSmall;
+extern const Common::String kFontBig;
 
 /**
  *  Represents the game's fonts. See docs for setFont() for font format details.
@@ -37,8 +40,11 @@ const Common::String kFontBig("Big.fon");
 class Font {
 	
 public: 
+	
+	Font();
 	Font(const Common::String &filename);
 	~Font();
+
 	bool setFont(const Common::String &filename);
 	uint8 getFontHeight() const { return _fontHeight; };
 	uint8 getMaxCharWidth() const { return _maxCharWidth; };
@@ -47,6 +53,7 @@ public:
 	void drawString(Graphics::Surface *dst, Common::String &str, 
 					int x, int y, int spacing = 0) const;
 	int getStringWidth(Common::String &str, int spacing = 0) const;
+	void setColour(uint8 colour);
 
 private:
 	uint8 _fontHeight;
@@ -66,8 +73,25 @@ private:
 	 */
 	static const unsigned int kCharIndexOffset = 32;
 
+	/** Default font colours. They all seem to remain constant except for the
+	 *  first one which varies depending on the character speaking.
+	 *  _overFontColour is set to transparent.
+	 * TODO: Find out what _fontColour1 should actually be when the game starts
+	 */
+
+	static const uint8 _fontColour1 = 2;	
+	static const uint8 _fontColour2 = 0;	
+	static const uint8 _fontColour3 = 3;	
+	static const uint8 _fontColour4 = 4;
+	static const uint8 _overFontColour = 255;	
+
+	/** The varying font colour; initially set to _fontColour1 */
+	uint8 _currentFontColour;
+
 	/** Internal function for freeing fonts when destructing/loading another */
 	void freeFont();
 };
 
 } // End of namespace Draci
+
+#endif // FONT_H