Refactored and simplified lua stuff a lot.

archive/ui/uitext.c

@@ -0,0 +1,111 @@
+// /**
+//  * Copyright (c) 2025 Dominic Masters
+//  * 
+//  * This software is released under the MIT License.
+//  * https://opensource.org/licenses/MIT
+//  */
+
+#include "uitext.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "display/spritebatch.h"
+
+void uiTextDrawChar(
+  const float_t x,
+  const float_t y,
+  const char_t c,
+  const color_t color,
+  const tileset_t *tileset,
+  texture_t *texture
+) {
+  int32_t tileIndex = (int32_t)(c) - UI_TEXT_CHAR_START;
+  if(tileIndex < 0 || tileIndex >= tileset->tileCount) {
+    tileIndex = ((int32_t)'@') - UI_TEXT_CHAR_START;
+  }
+
+  assertTrue(
+    tileIndex >= 0 && tileIndex <= tileset->tileCount,
+    "Character is out of bounds for font tiles"
+  );
+
+  vec4 uv;
+  tilesetTileGetUV(tileset, tileIndex, uv);
+
+  spriteBatchPush(
+    texture,
+    x, y,
+    x + tileset->tileWidth,
+    y + tileset->tileHeight,
+    color,
+    uv[0], uv[1], uv[2], uv[3]
+  );
+}
+
+void uiTextDraw(
+  const float_t x,
+  const float_t y,
+  const char_t *text,
+  const color_t color,
+  const tileset_t *tileset,
+  texture_t *texture
+) {
+  assertNotNull(text, "Text cannot be NULL");
+
+  float_t posX = x;
+  float_t posY = y;
+
+  char_t c;
+  int32_t i = 0;
+  while((c = text[i++]) != '\0') {
+    if(c == '\n') {
+      posX = x;
+      posY += tileset->tileHeight;
+      continue;
+    }
+
+    if(c == ' ') {
+      posX += tileset->tileWidth;
+      continue;
+    }
+
+    uiTextDrawChar(posX, posY, c, color, tileset, texture);
+    posX += tileset->tileWidth;
+  }
+}
+
+void uiTextMeasure(
+  const char_t *text,
+  const tileset_t *tileset,
+  int32_t *outWidth,
+  int32_t *outHeight
+) {
+  assertNotNull(text, "Text cannot be NULL");
+  assertNotNull(outWidth, "Output width pointer cannot be NULL");
+  assertNotNull(outHeight, "Output height pointer cannot be NULL");
+
+  int32_t width = 0;
+  int32_t height = tileset->tileHeight;
+  int32_t lineWidth = 0;
+
+  char_t c;
+  int32_t i = 0;
+  while((c = text[i++]) != '\0') {
+    if(c == '\n') {
+      if(lineWidth > width) {
+        width = lineWidth;
+      }
+      lineWidth = 0;
+      height += tileset->tileHeight;
+      continue;
+    }
+
+    lineWidth += tileset->tileWidth;
+  }
+
+  if(lineWidth > width) {
+    width = lineWidth;
+  }
+
+  *outWidth = width;
+  *outHeight = height;
+}