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renderer: draw floating-point text

isolation_bkp/dynres
Dominik Madarász 2022-09-13 12:07:40 +00:00 committed by GitHub
parent c20793d896
commit 378d42a0aa
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 73 additions and 4 deletions
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2
code/game/src/renderer_v0.c
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@ -79,7 +79,7 @@ void DEBUG_draw_entities(uint64_t key, entity_view * data) {
DrawTexturePro(GetSpriteTexture2D(assets_find(it_kind)), ASSET_SRC_RECT(), ((Rectangle){ix, iy, 32, 32}), (Vector2){0.5f,0.5f}, 0.0f, ALPHA(WHITE));
if (!inv_is_open)
DrawTextEco(zpl_bprintf("%d", qty), ix+24, iy+24, 8, RAYWHITE, 0.0f);
DrawTextEco(zpl_bprintf("%d", qty), x+24, y+24, 8, RAYWHITE, 0.0f);
}
}
}break;

75
code/game/src/utils/raylib_helpers.h
View File

@ -9,17 +9,86 @@
static inline float lerp(float a, float b, float t) { return a * (1.0f - t) + b * t; }
static inline
void DrawTextCodepointEco(Font font, int codepoint, Vector2 position, float fontSize, Color tint)
{
// Character index position in sprite font
// NOTE: In case a codepoint is not available in the font, index returned points to '?'
int index = GetGlyphIndex(font, codepoint);
float scaleFactor = fontSize/font.baseSize; // Character quad scaling factor
// Character destination rectangle on screen
// NOTE: We consider glyphPadding on drawing
Rectangle dstRec = { position.x + font.glyphs[index].offsetX*scaleFactor - (float)font.glyphPadding*scaleFactor,
position.y + font.glyphs[index].offsetY*scaleFactor - (float)font.glyphPadding*scaleFactor,
(font.recs[index].width + 2.0f*font.glyphPadding)*scaleFactor,
(font.recs[index].height + 2.0f*font.glyphPadding)*scaleFactor };
// Character source rectangle from font texture atlas
// NOTE: We consider chars padding when drawing, it could be required for outline/glow shader effects
Rectangle srcRec = { font.recs[index].x - (float)font.glyphPadding, font.recs[index].y - (float)font.glyphPadding,
font.recs[index].width + 2.0f*font.glyphPadding, font.recs[index].height + 2.0f*font.glyphPadding };
// Draw the character texture on the screen
DrawTexturePro(font.texture, srcRec, dstRec, (Vector2){ 0, 0 }, 0.0f, tint);
}
static inline
void DrawTextExEco(Font font, const char *text, Vector2 position, float fontSize, float spacing, Color tint)
{
if (font.texture.id == 0) font = GetFontDefault(); // Security check in case of not valid font
int size = TextLength(text); // Total size in bytes of the text, scanned by codepoints in loop
int textOffsetY = 0; // Offset between lines (on line break '\n')
float textOffsetX = 0.0f; // Offset X to next character to draw
float scaleFactor = fontSize/font.baseSize; // Character quad scaling factor
for (int i = 0; i < size;)
{
// Get next codepoint from byte string and glyph index in font
int codepointByteCount = 0;
int codepoint = GetCodepoint(&text[i], &codepointByteCount);
int index = GetGlyphIndex(font, codepoint);
// NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f)
// but we need to draw all of the bad bytes using the '?' symbol moving one byte
if (codepoint == 0x3f) codepointByteCount = 1;
if (codepoint == '\n')
{
// NOTE: Fixed line spacing of 1.5 line-height
// TODO: Support custom line spacing defined by user
textOffsetY += (int)((font.baseSize + font.baseSize/2.0f)*scaleFactor);
textOffsetX = 0.0f;
}
else
{
if ((codepoint != ' ') && (codepoint != '\t'))
{
DrawTextCodepointEco(font, codepoint, (Vector2){ position.x + textOffsetX, position.y + textOffsetY }, fontSize, tint);
}
if (font.glyphs[index].advanceX == 0) textOffsetX += ((float)font.recs[index].width*scaleFactor + spacing);
else textOffsetX += ((float)font.glyphs[index].advanceX*scaleFactor + spacing);
}
i += codepointByteCount; // Move text bytes counter to next codepoint
}
}
static inline
void DrawTextEco(const char *text, float posX, float posY, int fontSize, Color color, float spacing) {
#if 1
// Check if default font has been loaded
if (GetFontDefault().texture.id != 0) {
Vector2 position = { (float)posX , (float)posY };
Vector2 position = { posX , posY };
float defaultFontSize = 10.0; // Default Font chars height in pixel
float new_spacing = spacing == 0.0f ? (float)fontSize/defaultFontSize : spacing;
float new_spacing = spacing == 0.0f ? fontSize/(float)defaultFontSize : spacing;
DrawTextEx(GetFontDefault(), text, position, (float)fontSize , (float)new_spacing , color);
DrawTextExEco(GetFontDefault(), text, position, (float)fontSize , (float)new_spacing , color);
}
#endif
}