/********************************************************************************************** * * raylib.text * * Basic functions to load SpriteFonts and draw Text * * Copyright (c) 2014-2016 Ramon Santamaria (@raysan5) * * This software is provided "as-is", without any express or implied warranty. In no event * will the authors be held liable for any damages arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, including commercial * applications, and to alter it and redistribute it freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not claim that you * wrote the original software. If you use this software in a product, an acknowledgment * in the product documentation would be appreciated but is not required. * * 2. Altered source versions must be plainly marked as such, and must not be misrepresented * as being the original software. * * 3. This notice may not be removed or altered from any source distribution. * **********************************************************************************************/ #include "raylib.h" #include // Required for: malloc(), free() #include // Required for: strlen() #include // Required for: va_list, va_start(), vfprintf(), va_end() #include // Required for: FILE, fopen(), fclose(), fscanf(), feof(), rewind(), fgets() #include "utils.h" // Required for: GetExtension(), GetNextPOT() // Following libs are used on LoadTTF() //#define STBTT_STATIC #define STB_TRUETYPE_IMPLEMENTATION #include "external/stb_truetype.h" // Required for: stbtt_BakeFontBitmap() // Rectangle packing functions (not used at the moment) //#define STB_RECT_PACK_IMPLEMENTATION //#include "stb_rect_pack.h" //---------------------------------------------------------------------------------- // Defines and Macros //---------------------------------------------------------------------------------- #define MAX_FORMATTEXT_LENGTH 64 #define MAX_SUBTEXT_LENGTH 64 #define BIT_CHECK(a,b) ((a) & (1<<(b))) //---------------------------------------------------------------------------------- // Types and Structures Definition //---------------------------------------------------------------------------------- // ... //---------------------------------------------------------------------------------- // Global variables //---------------------------------------------------------------------------------- static SpriteFont defaultFont; // Default font provided by raylib // NOTE: defaultFont is loaded on InitWindow and disposed on CloseWindow [module: core] //---------------------------------------------------------------------------------- // Other Modules Functions Declaration (required by text) //---------------------------------------------------------------------------------- //... //---------------------------------------------------------------------------------- // Module specific Functions Declaration //---------------------------------------------------------------------------------- static int GetCharIndex(SpriteFont font, int letter); static SpriteFont LoadImageFont(Image image, Color key, int firstChar); // Load a Image font file (XNA style) static SpriteFont LoadRBMF(const char *fileName); // Load a rBMF font file (raylib BitMap Font) static SpriteFont LoadBMFont(const char *fileName); // Load a BMFont file (AngelCode font file) static SpriteFont LoadTTF(const char *fileName, int fontSize, int numChars, int *fontChars); // Load spritefont from TTF data extern void LoadDefaultFont(void); extern void UnloadDefaultFont(void); //---------------------------------------------------------------------------------- // Module Functions Definition //---------------------------------------------------------------------------------- extern void LoadDefaultFont(void) { // NOTE: Using UTF8 encoding table for Unicode U+0000..U+00FF Basic Latin + Latin-1 Supplement // http://www.utf8-chartable.de/unicode-utf8-table.pl defaultFont.numChars = 224; // Number of chars included in our default font // Default font is directly defined here (data generated from a sprite font image) // This way, we reconstruct SpriteFont without creating large global variables // This data is automatically allocated to Stack and automatically deallocated at the end of this function int defaultFontData[512] = { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00200020, 0x0001b000, 0x00000000, 0x00000000, 0x8ef92520, 0x00020a00, 0x7dbe8000, 0x1f7df45f, 0x4a2bf2a0, 0x0852091e, 0x41224000, 0x10041450, 0x2e292020, 0x08220812, 0x41222000, 0x10041450, 0x10f92020, 0x3efa084c, 0x7d22103c, 0x107df7de, 0xe8a12020, 0x08220832, 0x05220800, 0x10450410, 0xa4a3f000, 0x08520832, 0x05220400, 0x10450410, 0xe2f92020, 0x0002085e, 0x7d3e0281, 0x107df41f, 0x00200000, 0x8001b000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xc0000fbe, 0xfbf7e00f, 0x5fbf7e7d, 0x0050bee8, 0x440808a2, 0x0a142fe8, 0x50810285, 0x0050a048, 0x49e428a2, 0x0a142828, 0x40810284, 0x0048a048, 0x10020fbe, 0x09f7ebaf, 0xd89f3e84, 0x0047a04f, 0x09e48822, 0x0a142aa1, 0x50810284, 0x0048a048, 0x04082822, 0x0a142fa0, 0x50810285, 0x0050a248, 0x00008fbe, 0xfbf42021, 0x5f817e7d, 0x07d09ce8, 0x00008000, 0x00000fe0, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000c0180, 0xdfbf4282, 0x0bfbf7ef, 0x42850505, 0x004804bf, 0x50a142c6, 0x08401428, 0x42852505, 0x00a808a0, 0x50a146aa, 0x08401428, 0x42852505, 0x00081090, 0x5fa14a92, 0x0843f7e8, 0x7e792505, 0x00082088, 0x40a15282, 0x08420128, 0x40852489, 0x00084084, 0x40a16282, 0x0842022a, 0x40852451, 0x00088082, 0xc0bf4282, 0xf843f42f, 0x7e85fc21, 0x3e0900bf, 0x00000000, 0x00000004, 0x00000000, 0x000c0180, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04000402, 0x41482000, 0x00000000, 0x00000800, 0x04000404, 0x4100203c, 0x00000000, 0x00000800, 0xf7df7df0, 0x514bef85, 0xbefbefbe, 0x04513bef, 0x14414500, 0x494a2885, 0xa28a28aa, 0x04510820, 0xf44145f0, 0x474a289d, 0xa28a28aa, 0x04510be0, 0x14414510, 0x494a2884, 0xa28a28aa, 0x02910a00, 0xf7df7df0, 0xd14a2f85, 0xbefbe8aa, 0x011f7be0, 0x00000000, 0x00400804, 0x20080000, 0x00000000, 0x00000000, 0x00600f84, 0x20080000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xac000000, 0x00000f01, 0x00000000, 0x00000000, 0x24000000, 0x00000901, 0x00000000, 0x06000000, 0x24000000, 0x00000901, 0x00000000, 0x09108000, 0x24fa28a2, 0x00000901, 0x00000000, 0x013e0000, 0x2242252a, 0x00000952, 0x00000000, 0x038a8000, 0x2422222a, 0x00000929, 0x00000000, 0x010a8000, 0x2412252a, 0x00000901, 0x00000000, 0x010a8000, 0x24fbe8be, 0x00000901, 0x00000000, 0x0ebe8000, 0xac020000, 0x00000f01, 0x00000000, 0x00048000, 0x0003e000, 0x00000000, 0x00000000, 0x00008000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000038, 0x8443b80e, 0x00203a03, 0x02bea080, 0xf0000020, 0xc452208a, 0x04202b02, 0xf8029122, 0x07f0003b, 0xe44b388e, 0x02203a02, 0x081e8a1c, 0x0411e92a, 0xf4420be0, 0x01248202, 0xe8140414, 0x05d104ba, 0xe7c3b880, 0x00893a0a, 0x283c0e1c, 0x04500902, 0xc4400080, 0x00448002, 0xe8208422, 0x04500002, 0x80400000, 0x05200002, 0x083e8e00, 0x04100002, 0x804003e0, 0x07000042, 0xf8008400, 0x07f00003, 0x80400000, 0x04000022, 0x00000000, 0x00000000, 0x80400000, 0x04000002, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800702, 0x1848a0c2, 0x84010000, 0x02920921, 0x01042642, 0x00005121, 0x42023f7f, 0x00291002, 0xefc01422, 0x7efdfbf7, 0xefdfa109, 0x03bbbbf7, 0x28440f12, 0x42850a14, 0x20408109, 0x01111010, 0x28440408, 0x42850a14, 0x2040817f, 0x01111010, 0xefc78204, 0x7efdfbf7, 0xe7cf8109, 0x011111f3, 0x2850a932, 0x42850a14, 0x2040a109, 0x01111010, 0x2850b840, 0x42850a14, 0xefdfbf79, 0x03bbbbf7, 0x001fa020, 0x00000000, 0x00001000, 0x00000000, 0x00002070, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x08022800, 0x00012283, 0x02430802, 0x01010001, 0x8404147c, 0x20000144, 0x80048404, 0x00823f08, 0xdfbf4284, 0x7e03f7ef, 0x142850a1, 0x0000210a, 0x50a14684, 0x528a1428, 0x142850a1, 0x03efa17a, 0x50a14a9e, 0x52521428, 0x142850a1, 0x02081f4a, 0x50a15284, 0x4a221428, 0xf42850a1, 0x03efa14b, 0x50a16284, 0x4a521428, 0x042850a1, 0x0228a17a, 0xdfbf427c, 0x7e8bf7ef, 0xf7efdfbf, 0x03efbd0b, 0x00000000, 0x04000000, 0x00000000, 0x00000008, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00200508, 0x00840400, 0x11458122, 0x00014210, 0x00514294, 0x51420800, 0x20a22a94, 0x0050a508, 0x00200000, 0x00000000, 0x00050000, 0x08000000, 0xfefbefbe, 0xfbefbefb, 0xfbeb9114, 0x00fbefbe, 0x20820820, 0x8a28a20a, 0x8a289114, 0x3e8a28a2, 0xfefbefbe, 0xfbefbe0b, 0x8a289114, 0x008a28a2, 0x228a28a2, 0x08208208, 0x8a289114, 0x088a28a2, 0xfefbefbe, 0xfbefbefb, 0xfa2f9114, 0x00fbefbe, 0x00000000, 0x00000040, 0x00000000, 0x00000000, 0x00000000, 0x00000020, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00210100, 0x00000004, 0x00000000, 0x00000000, 0x14508200, 0x00001402, 0x00000000, 0x00000000, 0x00000010, 0x00000020, 0x00000000, 0x00000000, 0xa28a28be, 0x00002228, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022e8, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022a8, 0x00000000, 0x00000000, 0xa28a28aa, 0x000022e8, 0x00000000, 0x00000000, 0xbefbefbe, 0x00003e2f, 0x00000000, 0x00000000, 0x00000004, 0x00002028, 0x00000000, 0x00000000, 0x80000000, 0x00003e0f, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }; int charsHeight = 10; int charsDivisor = 1; // Every char is separated from the consecutive by a 1 pixel divisor, horizontally and vertically int charsWidth[224] = { 3, 1, 4, 6, 5, 7, 6, 2, 3, 3, 5, 5, 2, 4, 1, 7, 5, 2, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 3, 4, 3, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 5, 6, 5, 7, 6, 6, 6, 6, 6, 6, 7, 6, 7, 7, 6, 6, 6, 2, 7, 2, 3, 5, 2, 5, 5, 5, 5, 5, 4, 5, 5, 1, 2, 5, 2, 5, 5, 5, 5, 5, 5, 5, 4, 5, 5, 5, 5, 5, 5, 3, 1, 3, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, 7, 1, 5, 3, 7, 3, 5, 4, 1, 7, 4, 3, 5, 3, 3, 2, 5, 6, 1, 2, 2, 3, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 7, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 6, 6, 6, 4, 6, 5, 5, 5, 5, 5, 5, 9, 5, 5, 5, 5, 5, 2, 2, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 5 }; // Re-construct image from defaultFontData and generate OpenGL texture //---------------------------------------------------------------------- int imWidth = 128; int imHeight = 128; Color *imagePixels = (Color *)malloc(imWidth*imHeight*sizeof(Color)); for (int i = 0; i < imWidth*imHeight; i++) imagePixels[i] = BLANK; // Initialize array int counter = 0; // Font data elements counter // Fill imgData with defaultFontData (convert from bit to pixel!) for (int i = 0; i < imWidth*imHeight; i += 32) { for (int j = 31; j >= 0; j--) { if (BIT_CHECK(defaultFontData[counter], j)) imagePixels[i+j] = WHITE; } counter++; if (counter > 512) counter = 0; // Security check... } //FILE *myimage = fopen("default_font.raw", "wb"); //fwrite(image.pixels, 1, 128*128*4, myimage); //fclose(myimage); Image image = LoadImageEx(imagePixels, imWidth, imHeight); ImageFormat(&image, UNCOMPRESSED_GRAY_ALPHA); free(imagePixels); defaultFont.texture = LoadTextureFromImage(image); UnloadImage(image); // Reconstruct charSet using charsWidth[], charsHeight, charsDivisor, numChars //------------------------------------------------------------------------------ defaultFont.charValues = (int *)malloc(defaultFont.numChars*sizeof(int)); defaultFont.charRecs = (Rectangle *)malloc(defaultFont.numChars*sizeof(Rectangle)); // Allocate space for our character rectangle data // This memory should be freed at end! --> Done on CloseWindow() defaultFont.charOffsets = (Vector2 *)malloc(defaultFont.numChars*sizeof(Vector2)); defaultFont.charAdvanceX = (int *)malloc(defaultFont.numChars*sizeof(int)); int currentLine = 0; int currentPosX = charsDivisor; int testPosX = charsDivisor; for (int i = 0; i < defaultFont.numChars; i++) { defaultFont.charValues[i] = 32 + i; // First char is 32 defaultFont.charRecs[i].x = currentPosX; defaultFont.charRecs[i].y = charsDivisor + currentLine*(charsHeight + charsDivisor); defaultFont.charRecs[i].width = charsWidth[i]; defaultFont.charRecs[i].height = charsHeight; testPosX += (defaultFont.charRecs[i].width + charsDivisor); if (testPosX >= defaultFont.texture.width) { currentLine++; currentPosX = 2*charsDivisor + charsWidth[i]; testPosX = currentPosX; defaultFont.charRecs[i].x = charsDivisor; defaultFont.charRecs[i].y = charsDivisor + currentLine*(charsHeight + charsDivisor); } else currentPosX = testPosX; // NOTE: On default font character offsets and xAdvance are not required defaultFont.charOffsets[i] = (Vector2){ 0.0f, 0.0f }; defaultFont.charAdvanceX[i] = 0; } defaultFont.size = defaultFont.charRecs[0].height; TraceLog(INFO, "[TEX ID %i] Default font loaded successfully", defaultFont.texture.id); } extern void UnloadDefaultFont(void) { UnloadTexture(defaultFont.texture); free(defaultFont.charValues); free(defaultFont.charRecs); free(defaultFont.charOffsets); free(defaultFont.charAdvanceX); } // Get the default font, useful to be used with extended parameters SpriteFont GetDefaultFont() { return defaultFont; } // Load a SpriteFont image into GPU memory SpriteFont LoadSpriteFont(const char *fileName) { // Default hardcoded values for ttf file loading #define DEFAULT_TTF_FONTSIZE 32 // Font first character (32 - space) #define DEFAULT_TTF_NUMCHARS 95 // ASCII 32..126 is 95 glyphs #define DEFAULT_FIRST_CHAR 32 // Expected first char for image spritefont SpriteFont spriteFont = { 0 }; // Check file extension if (strcmp(GetExtension(fileName),"rbmf") == 0) spriteFont = LoadRBMF(fileName); else if (strcmp(GetExtension(fileName),"ttf") == 0) spriteFont = LoadSpriteFontTTF(fileName, DEFAULT_TTF_FONTSIZE, 0, NULL); else if (strcmp(GetExtension(fileName),"fnt") == 0) spriteFont = LoadBMFont(fileName); else { Image image = LoadImage(fileName); if (image.data != NULL) spriteFont = LoadImageFont(image, MAGENTA, DEFAULT_FIRST_CHAR); UnloadImage(image); } if (spriteFont.texture.id == 0) { TraceLog(WARNING, "[%s] SpriteFont could not be loaded, using default font", fileName); spriteFont = GetDefaultFont(); } else SetTextureFilter(spriteFont.texture, FILTER_POINT); // By default we set point filter (best performance) return spriteFont; } // Load SpriteFont from TTF file with custom parameters // NOTE: You can pass an array with desired characters, those characters should be available in the font // if array is NULL, default char set is selected 32..126 SpriteFont LoadSpriteFontTTF(const char *fileName, int fontSize, int numChars, int *fontChars) { SpriteFont spriteFont = { 0 }; if (strcmp(GetExtension(fileName),"ttf") == 0) { if ((fontChars == NULL) || (numChars == 0)) { int totalChars = 95; // Default charset [32..126] int *defaultFontChars = (int *)malloc(totalChars*sizeof(int)); for (int i = 0; i < totalChars; i++) defaultFontChars[i] = i + 32; // Default first character: SPACE[32] spriteFont = LoadTTF(fileName, fontSize, totalChars, defaultFontChars); } else spriteFont = LoadTTF(fileName, fontSize, numChars, fontChars); } if (spriteFont.texture.id == 0) { TraceLog(WARNING, "[%s] SpriteFont could not be generated, using default font", fileName); spriteFont = GetDefaultFont(); } return spriteFont; } // Unload SpriteFont from GPU memory void UnloadSpriteFont(SpriteFont spriteFont) { // NOTE: Make sure spriteFont is not default font (fallback) if (spriteFont.texture.id != defaultFont.texture.id) { UnloadTexture(spriteFont.texture); free(spriteFont.charValues); free(spriteFont.charRecs); free(spriteFont.charOffsets); free(spriteFont.charAdvanceX); TraceLog(DEBUG, "Unloaded sprite font data"); } } // Draw text (using default font) // NOTE: fontSize work like in any drawing program but if fontSize is lower than font-base-size, then font-base-size is used // NOTE: chars spacing is proportional to fontSize void DrawText(const char *text, int posX, int posY, int fontSize, Color color) { // Check if default font has been loaded if (defaultFont.texture.id != 0) { Vector2 position = { (float)posX, (float)posY }; int defaultFontSize = 10; // Default Font chars height in pixel if (fontSize < defaultFontSize) fontSize = defaultFontSize; int spacing = fontSize/defaultFontSize; DrawTextEx(GetDefaultFont(), text, position, (float)fontSize, spacing, color); } } // Draw text using SpriteFont // NOTE: chars spacing is NOT proportional to fontSize void DrawTextEx(SpriteFont spriteFont, const char *text, Vector2 position, float fontSize, int spacing, Color tint) { int length = strlen(text); int textOffsetX = 0; // Offset between characters int textOffsetY = 0; // Required for line break! float scaleFactor; unsigned char letter; // Current character int index; // Index position in sprite font scaleFactor = fontSize/spriteFont.size; // NOTE: Some ugly hacks are made to support Latin-1 Extended characters directly // written in C code files (codified by default as UTF-8) for (int i = 0; i < length; i++) { if ((unsigned char)text[i] == '\n') { // NOTE: Fixed line spacing of 1.5 lines textOffsetY += ((spriteFont.size + spriteFont.size/2)*scaleFactor); textOffsetX = 0; } else { if ((unsigned char)text[i] == 0xc2) // UTF-8 encoding identification HACK! { // Support UTF-8 encoded values from [0xc2 0x80] -> [0xc2 0xbf](¿) letter = (unsigned char)text[i + 1]; index = GetCharIndex(spriteFont, (int)letter); i++; } else if ((unsigned char)text[i] == 0xc3) // UTF-8 encoding identification HACK! { // Support UTF-8 encoded values from [0xc3 0x80](À) -> [0xc3 0xbf](ÿ) letter = (unsigned char)text[i + 1]; index = GetCharIndex(spriteFont, (int)letter + 64); i++; } else index = GetCharIndex(spriteFont, (int)text[i]); DrawTexturePro(spriteFont.texture, spriteFont.charRecs[index], (Rectangle){ position.x + textOffsetX + spriteFont.charOffsets[index].x*scaleFactor, position.y + textOffsetY + spriteFont.charOffsets[index].y*scaleFactor, spriteFont.charRecs[index].width*scaleFactor, spriteFont.charRecs[index].height*scaleFactor }, (Vector2){ 0, 0 }, 0.0f, tint); if (spriteFont.charAdvanceX[index] == 0) textOffsetX += (spriteFont.charRecs[index].width*scaleFactor + spacing); else textOffsetX += (spriteFont.charAdvanceX[index]*scaleFactor + spacing); } } } // Formatting of text with variables to 'embed' const char *FormatText(const char *text, ...) { static char buffer[MAX_FORMATTEXT_LENGTH]; va_list args; va_start(args, text); vsprintf(buffer, text, args); va_end(args); return buffer; } // Get a piece of a text string const char *SubText(const char *text, int position, int length) { static char buffer[MAX_SUBTEXT_LENGTH]; int textLength = strlen(text); if (position >= textLength) { position = textLength - 1; length = 0; } if (length >= textLength) length = textLength; for (int c = 0 ; c < length ; c++) { *(buffer+c) = *(text+position); text++; } *(buffer+length) = '\0'; return buffer; } // Measure string width for default font int MeasureText(const char *text, int fontSize) { Vector2 vec = { 0.0f, 0.0f }; // Check if default font has been loaded if (defaultFont.texture.id != 0) { int defaultFontSize = 10; // Default Font chars height in pixel if (fontSize < defaultFontSize) fontSize = defaultFontSize; int spacing = fontSize/defaultFontSize; vec = MeasureTextEx(GetDefaultFont(), text, (float)fontSize, spacing); } return (int)vec.x; } // Measure string size for SpriteFont Vector2 MeasureTextEx(SpriteFont spriteFont, const char *text, float fontSize, int spacing) { int len = strlen(text); int tempLen = 0; // Used to count longer text line num chars int lenCounter = 0; int textWidth = 0; int tempTextWidth = 0; // Used to count longer text line width int textHeight = spriteFont.size; float scaleFactor = fontSize/spriteFont.size; for (int i = 0; i < len; i++) { lenCounter++; if (text[i] != '\n') { int index = GetCharIndex(spriteFont, (int)text[i]); if (spriteFont.charAdvanceX[index] != 0) textWidth += spriteFont.charAdvanceX[index]; else textWidth += (spriteFont.charRecs[index].width + spriteFont.charOffsets[index].x); } else { if (tempTextWidth < textWidth) tempTextWidth = textWidth; lenCounter = 0; textWidth = 0; textHeight += (spriteFont.size + spriteFont.size/2); // NOTE: Fixed line spacing of 1.5 lines } if (tempLen < lenCounter) tempLen = lenCounter; } if (tempTextWidth < textWidth) tempTextWidth = textWidth; Vector2 vec; vec.x = (float)tempTextWidth*scaleFactor + (tempLen - 1)*spacing; // Adds chars spacing to measure vec.y = (float)textHeight*scaleFactor; return vec; } // Shows current FPS on top-left corner // NOTE: Uses default font void DrawFPS(int posX, int posY) { char buffer[20]; // NOTE: We are rendering fps every second for better viewing on high framerates // TODO: Not working properly on ANDROID and RPI static float fps = 0.0f; static int counter = 0; static int refreshRate = 20; if (counter < refreshRate) { counter++; } else { fps = GetFPS(); refreshRate = fps; counter = 0; } sprintf(buffer, "%2.0f FPS", fps); DrawText(buffer, posX, posY, 20, LIME); } //---------------------------------------------------------------------------------- // Module specific Functions Definition //---------------------------------------------------------------------------------- static int GetCharIndex(SpriteFont font, int letter) { #define UNORDERED_CHARSET #if defined(UNORDERED_CHARSET) int index = 0; for (int i = 0; i < font.numChars; i++) { if (font.charValues[i] == letter) { index = i; break; } } return index; #else return (letter - 32); #endif } // Load an Image font file (XNA style) static SpriteFont LoadImageFont(Image image, Color key, int firstChar) { #define COLOR_EQUAL(col1, col2) ((col1.r == col2.r)&&(col1.g == col2.g)&&(col1.b == col2.b)&&(col1.a == col2.a)) int charSpacing = 0; int lineSpacing = 0; int x = 0; int y = 0; // Default number of characters supported #define MAX_FONTCHARS 256 // We allocate a temporal arrays for chars data measures, // once we get the actual number of chars, we copy data to a sized arrays int tempCharValues[MAX_FONTCHARS]; Rectangle tempCharRecs[MAX_FONTCHARS]; Color *pixels = GetImageData(image); // Parse image data to get charSpacing and lineSpacing for (y = 0; y < image.height; y++) { for (x = 0; x < image.width; x++) { if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break; } if (!COLOR_EQUAL(pixels[y*image.width + x], key)) break; } charSpacing = x; lineSpacing = y; int charHeight = 0; int j = 0; while (!COLOR_EQUAL(pixels[(lineSpacing + j)*image.width + charSpacing], key)) j++; charHeight = j; // Check array values to get characters: value, x, y, w, h int index = 0; int lineToRead = 0; int xPosToRead = charSpacing; // Parse image data to get rectangle sizes while ((lineSpacing + lineToRead*(charHeight + lineSpacing)) < image.height) { while ((xPosToRead < image.width) && !COLOR_EQUAL((pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead]), key)) { tempCharValues[index] = firstChar + index; tempCharRecs[index].x = xPosToRead; tempCharRecs[index].y = lineSpacing + lineToRead*(charHeight + lineSpacing); tempCharRecs[index].height = charHeight; int charWidth = 0; while (!COLOR_EQUAL(pixels[(lineSpacing + (charHeight+lineSpacing)*lineToRead)*image.width + xPosToRead + charWidth], key)) charWidth++; tempCharRecs[index].width = charWidth; index++; xPosToRead += (charWidth + charSpacing); } lineToRead++; xPosToRead = charSpacing; } TraceLog(DEBUG, "SpriteFont data parsed correctly from image"); // NOTE: We need to remove key color borders from image to avoid weird // artifacts on texture scaling when using FILTER_BILINEAR or FILTER_TRILINEAR for (int i = 0; i < image.height*image.width; i++) if (COLOR_EQUAL(pixels[i], key)) pixels[i] = BLANK; // Create a new image with the processed color data (key color replaced by BLANK) Image fontClear = LoadImageEx(pixels, image.width, image.height); free(pixels); // Free pixels array memory // Create spritefont with all data parsed from image SpriteFont spriteFont = { 0 }; spriteFont.texture = LoadTextureFromImage(fontClear); // Convert processed image to OpenGL texture spriteFont.numChars = index; UnloadImage(fontClear); // Unload processed image once converted to texture // We got tempCharValues and tempCharsRecs populated with chars data // Now we move temp data to sized charValues and charRecs arrays spriteFont.charRecs = (Rectangle *)malloc(spriteFont.numChars*sizeof(Rectangle)); spriteFont.charValues = (int *)malloc(spriteFont.numChars*sizeof(int)); spriteFont.charOffsets = (Vector2 *)malloc(spriteFont.numChars*sizeof(Vector2)); spriteFont.charAdvanceX = (int *)malloc(spriteFont.numChars*sizeof(int)); for (int i = 0; i < spriteFont.numChars; i++) { spriteFont.charValues[i] = tempCharValues[i]; spriteFont.charRecs[i] = tempCharRecs[i]; // NOTE: On image based fonts (XNA style), character offsets and xAdvance are not required (set to 0) spriteFont.charOffsets[i] = (Vector2){ 0.0f, 0.0f }; spriteFont.charAdvanceX[i] = 0; } spriteFont.size = spriteFont.charRecs[0].height; TraceLog(INFO, "Image file loaded correctly as SpriteFont"); return spriteFont; } // Load a rBMF font file (raylib BitMap Font) static SpriteFont LoadRBMF(const char *fileName) { // rBMF Info Header (16 bytes) typedef struct { char id[4]; // rBMF file identifier char version; // rBMF file version // 4 MSB --> main version // 4 LSB --> subversion char firstChar; // First character in the font // NOTE: Depending on charDataType, it could be useless short imgWidth; // Image width - always POT (power-of-two) short imgHeight; // Image height - always POT (power-of-two) short numChars; // Number of characters contained short charHeight; // Characters height - the same for all characters char compType; // Compression type: // 4 MSB --> image data compression // 4 LSB --> chars data compression char charsDataType; // Char data type provided } rbmfInfoHeader; SpriteFont spriteFont = { 0 }; rbmfInfoHeader rbmfHeader; unsigned int *rbmfFileData = NULL; unsigned char *rbmfCharWidthData = NULL; int charsDivisor = 1; // Every char is separated from the consecutive by a 1 pixel divisor, horizontally and vertically FILE *rbmfFile = fopen(fileName, "rb"); // Define a pointer to bitmap file and open it in read-binary mode if (rbmfFile == NULL) { TraceLog(WARNING, "[%s] rBMF font file could not be opened, using default font", fileName); spriteFont = GetDefaultFont(); } else { fread(&rbmfHeader, sizeof(rbmfInfoHeader), 1, rbmfFile); TraceLog(DEBUG, "[%s] Loading rBMF file, size: %ix%i, numChars: %i, charHeight: %i", fileName, rbmfHeader.imgWidth, rbmfHeader.imgHeight, rbmfHeader.numChars, rbmfHeader.charHeight); spriteFont.numChars = (int)rbmfHeader.numChars; int numPixelBits = rbmfHeader.imgWidth*rbmfHeader.imgHeight/32; rbmfFileData = (unsigned int *)malloc(numPixelBits*sizeof(unsigned int)); for (int i = 0; i < numPixelBits; i++) fread(&rbmfFileData[i], sizeof(unsigned int), 1, rbmfFile); rbmfCharWidthData = (unsigned char *)malloc(spriteFont.numChars*sizeof(unsigned char)); for (int i = 0; i < spriteFont.numChars; i++) fread(&rbmfCharWidthData[i], sizeof(unsigned char), 1, rbmfFile); // Re-construct image from rbmfFileData //----------------------------------------- Color *imagePixels = (Color *)malloc(rbmfHeader.imgWidth*rbmfHeader.imgHeight*sizeof(Color)); for (int i = 0; i < rbmfHeader.imgWidth*rbmfHeader.imgHeight; i++) imagePixels[i] = BLANK; // Initialize array int counter = 0; // Font data elements counter // Fill image data (convert from bit to pixel!) for (int i = 0; i < rbmfHeader.imgWidth*rbmfHeader.imgHeight; i += 32) { for (int j = 31; j >= 0; j--) { if (BIT_CHECK(rbmfFileData[counter], j)) imagePixels[i+j] = WHITE; } counter++; } Image image = LoadImageEx(imagePixels, rbmfHeader.imgWidth, rbmfHeader.imgHeight); ImageFormat(&image, UNCOMPRESSED_GRAY_ALPHA); free(imagePixels); TraceLog(DEBUG, "[%s] Image reconstructed correctly, now converting it to texture", fileName); // Create spritefont with all data read from rbmf file spriteFont.texture = LoadTextureFromImage(image); UnloadImage(image); // Unload image data //TraceLog(INFO, "[%s] Starting chars set reconstruction", fileName); // Get characters data using rbmfCharWidthData, rbmfHeader.charHeight, charsDivisor, rbmfHeader.numChars spriteFont.charValues = (int *)malloc(spriteFont.numChars*sizeof(int)); spriteFont.charRecs = (Rectangle *)malloc(spriteFont.numChars*sizeof(Rectangle)); spriteFont.charOffsets = (Vector2 *)malloc(spriteFont.numChars*sizeof(Vector2)); spriteFont.charAdvanceX = (int *)malloc(spriteFont.numChars*sizeof(int)); int currentLine = 0; int currentPosX = charsDivisor; int testPosX = charsDivisor; for (int i = 0; i < spriteFont.numChars; i++) { spriteFont.charValues[i] = (int)rbmfHeader.firstChar + i; spriteFont.charRecs[i].x = currentPosX; spriteFont.charRecs[i].y = charsDivisor + currentLine*((int)rbmfHeader.charHeight + charsDivisor); spriteFont.charRecs[i].width = (int)rbmfCharWidthData[i]; spriteFont.charRecs[i].height = (int)rbmfHeader.charHeight; // NOTE: On image based fonts (XNA style), character offsets and xAdvance are not required (set to 0) spriteFont.charOffsets[i] = (Vector2){ 0.0f, 0.0f }; spriteFont.charAdvanceX[i] = 0; testPosX += (spriteFont.charRecs[i].width + charsDivisor); if (testPosX > spriteFont.texture.width) { currentLine++; currentPosX = 2*charsDivisor + (int)rbmfCharWidthData[i]; testPosX = currentPosX; spriteFont.charRecs[i].x = charsDivisor; spriteFont.charRecs[i].y = charsDivisor + currentLine*(rbmfHeader.charHeight + charsDivisor); } else currentPosX = testPosX; } spriteFont.size = spriteFont.charRecs[0].height; TraceLog(INFO, "[%s] rBMF file loaded correctly as SpriteFont", fileName); } fclose(rbmfFile); free(rbmfFileData); // Now we can free loaded data from RAM memory free(rbmfCharWidthData); return spriteFont; } // Load a BMFont file (AngelCode font file) static SpriteFont LoadBMFont(const char *fileName) { #define MAX_BUFFER_SIZE 256 SpriteFont font = { 0 }; font.texture.id = 0; char buffer[MAX_BUFFER_SIZE]; char *searchPoint = NULL; int fontSize = 0; int texWidth, texHeight; char texFileName[128]; int numChars = 0; int base; // Useless data FILE *fntFile; fntFile = fopen(fileName, "rt"); if (fntFile == NULL) { TraceLog(WARNING, "[%s] FNT file could not be opened", fileName); return font; } // NOTE: We skip first line, it contains no useful information fgets(buffer, MAX_BUFFER_SIZE, fntFile); //searchPoint = strstr(buffer, "size"); //sscanf(searchPoint, "size=%i", &fontSize); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "lineHeight"); sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i", &fontSize, &base, &texWidth, &texHeight); TraceLog(DEBUG, "[%s] Font size: %i", fileName, fontSize); TraceLog(DEBUG, "[%s] Font texture scale: %ix%i", fileName, texWidth, texHeight); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "file"); sscanf(searchPoint, "file=\"%128[^\"]\"", texFileName); TraceLog(DEBUG, "[%s] Font texture filename: %s", fileName, texFileName); fgets(buffer, MAX_BUFFER_SIZE, fntFile); searchPoint = strstr(buffer, "count"); sscanf(searchPoint, "count=%i", &numChars); TraceLog(DEBUG, "[%s] Font num chars: %i", fileName, numChars); // Compose correct path using route of .fnt file (fileName) and texFileName char *texPath = NULL; char *lastSlash = NULL; lastSlash = strrchr(fileName, '/'); // NOTE: We need some extra space to avoid memory corruption on next allocations! texPath = malloc(strlen(fileName) - strlen(lastSlash) + strlen(texFileName) + 4); // NOTE: strcat() and strncat() required a '\0' terminated string to work! *texPath = '\0'; strncat(texPath, fileName, strlen(fileName) - strlen(lastSlash) + 1); strncat(texPath, texFileName, strlen(texFileName)); TraceLog(DEBUG, "[%s] Font texture loading path: %s", fileName, texPath); Image imFont = LoadImage(texPath); if (imFont.format == UNCOMPRESSED_GRAYSCALE) ImageAlphaMask(&imFont, imFont); font.texture = LoadTextureFromImage(imFont); font.size = fontSize; font.numChars = numChars; font.charValues = (int *)malloc(numChars*sizeof(int)); font.charRecs = (Rectangle *)malloc(numChars*sizeof(Rectangle)); font.charOffsets = (Vector2 *)malloc(numChars*sizeof(Vector2)); font.charAdvanceX = (int *)malloc(numChars*sizeof(int)); UnloadImage(imFont); free(texPath); int charId, charX, charY, charWidth, charHeight, charOffsetX, charOffsetY, charAdvanceX; for (int i = 0; i < numChars; i++) { fgets(buffer, MAX_BUFFER_SIZE, fntFile); sscanf(buffer, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i", &charId, &charX, &charY, &charWidth, &charHeight, &charOffsetX, &charOffsetY, &charAdvanceX); // Save data properly in sprite font font.charValues[i] = charId; font.charRecs[i] = (Rectangle){ charX, charY, charWidth, charHeight }; font.charOffsets[i] = (Vector2){ (float)charOffsetX, (float)charOffsetY }; font.charAdvanceX[i] = charAdvanceX; } fclose(fntFile); if (font.texture.id == 0) { UnloadSpriteFont(font); font = GetDefaultFont(); } else TraceLog(INFO, "[%s] SpriteFont loaded successfully", fileName); return font; } // Generate a sprite font from TTF file data (font size required) // TODO: Review texture packing method and generation (use oversampling) static SpriteFont LoadTTF(const char *fileName, int fontSize, int numChars, int *fontChars) { // NOTE: Font texture size is predicted (being as much conservative as possible) // Predictive method consist of supposing same number of chars by line-column (sqrtf) // and a maximum character width of 3/4 of fontSize... it worked ok with all my tests... int textureSize = GetNextPOT(ceil((float)fontSize*3/4)*ceil(sqrtf((float)numChars))); TraceLog(INFO, "TTF spritefont loading: Predicted texture size: %ix%i", textureSize, textureSize); unsigned char *ttfBuffer = (unsigned char *)malloc(1 << 25); unsigned char *dataBitmap = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)); // One channel bitmap returned! stbtt_bakedchar *charData = (stbtt_bakedchar *)malloc(sizeof(stbtt_bakedchar)*numChars); SpriteFont font = { 0 }; FILE *ttfFile = fopen(fileName, "rb"); if (ttfFile == NULL) { TraceLog(WARNING, "[%s] TTF file could not be opened", fileName); return font; } fread(ttfBuffer, 1, 1<<25, ttfFile); if (fontChars[0] != 32) TraceLog(WARNING, "TTF spritefont loading: first character is not SPACE(32) character"); // NOTE: Using stb_truetype crappy packing method, no guarante the font fits the image... // TODO: Replace this function by a proper packing method and support random chars order, // we already receive a list (fontChars) with the ordered expected characters int result = stbtt_BakeFontBitmap(ttfBuffer, 0, fontSize, dataBitmap, textureSize, textureSize, fontChars[0], numChars, charData); //if (result > 0) TraceLog(INFO, "TTF spritefont loading: first unused row of generated bitmap: %i", result); if (result < 0) TraceLog(WARNING, "TTF spritefont loading: Not all the characters fit in the font"); free(ttfBuffer); // Convert image data from grayscale to to UNCOMPRESSED_GRAY_ALPHA unsigned char *dataGrayAlpha = (unsigned char *)malloc(textureSize*textureSize*sizeof(unsigned char)*2); // Two channels for (int i = 0, k = 0; i < textureSize*textureSize; i++, k += 2) { dataGrayAlpha[k] = 255; dataGrayAlpha[k + 1] = dataBitmap[i]; } free(dataBitmap); // Sprite font generation from TTF extracted data Image image; image.width = textureSize; image.height = textureSize; image.mipmaps = 1; image.format = UNCOMPRESSED_GRAY_ALPHA; image.data = dataGrayAlpha; font.texture = LoadTextureFromImage(image); //WritePNG("generated_ttf_image.png", (unsigned char *)image.data, image.width, image.height, 2); UnloadImage(image); // Unloads dataGrayAlpha font.size = fontSize; font.numChars = numChars; font.charValues = (int *)malloc(font.numChars*sizeof(int)); font.charRecs = (Rectangle *)malloc(font.numChars*sizeof(Rectangle)); font.charOffsets = (Vector2 *)malloc(font.numChars*sizeof(Vector2)); font.charAdvanceX = (int *)malloc(font.numChars*sizeof(int)); for (int i = 0; i < font.numChars; i++) { font.charValues[i] = fontChars[i]; font.charRecs[i].x = (int)charData[i].x0; font.charRecs[i].y = (int)charData[i].y0; font.charRecs[i].width = (int)charData[i].x1 - (int)charData[i].x0; font.charRecs[i].height = (int)charData[i].y1 - (int)charData[i].y0; font.charOffsets[i] = (Vector2){ charData[i].xoff, charData[i].yoff }; font.charAdvanceX[i] = (int)charData[i].xadvance; } free(charData); return font; }