Do some work on the CPU, assembler still needs update

util/font.c

@@ -0,0 +1,49 @@
+//
+// Created by bruno on 1.2.2025.
+//
+
+#include "font.h"
+
+BitmapFont
+prepText(SDL_Renderer *renderer, unsigned char pxSize, const char *file, uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
+    const unsigned char ptSize = floor(pxSize * 0.75);
+    TTF_Font *gFont = TTF_OpenFont(file, ptSize);
+    BitmapFont out;
+    out.size = pxSize;
+    out.color = (SDL_Color) {r, g, b, a};
+    unsigned char i = 0;
+    SDL_Surface *fontTempSurf = NULL;
+    do {
+        char tmpOut[2] = {i, 0};
+
+        fontTempSurf = TTF_RenderText_Solid(gFont, tmpOut, out.color);
+        SDL_Rect dstRect;
+        dstRect.x = 0;
+        dstRect.y = 0;
+        dstRect.w = pxSize;
+        dstRect.h = pxSize;
+        out.texture[i] = SDL_CreateTextureFromSurface(renderer, fontTempSurf);
+        i++;
+    } while (i < 255);
+
+    SDL_FreeSurface(fontTempSurf);
+    TTF_CloseFont(gFont);
+    return out;
+}
+
+void renderText(SDL_Renderer *renderer, BitmapFont font, char *string, uint16_t x, uint16_t y) {
+    SDL_Rect charRect;
+    charRect.x = 0;
+    charRect.y = 0;
+    charRect.w = font.size;
+    charRect.h = font.size;
+    SDL_Rect outRect = charRect;
+    outRect.x = x;
+    outRect.y = y;
+
+    while (*string) {
+        SDL_RenderCopy(renderer, font.texture[*string], &charRect, &outRect);
+        outRect.x += charRect.w + 1;
+        string++;
+    }
+}