Add car tint

TODO.txt

@@ -4,8 +4,8 @@
 - use 332 in SDL with potato?
 - option to turn on simple 332 colors?
 - c99 may impose limit 4095 chars on str literal, gives warning on internal
-  data file, try to somehow hack around it
-- add ifdefs that change car color?
+  data file, try to somehow hack around it (maybe just convert it to an array in
+  the end?)
 - add indicator that menu can be scrolled down
 - car deglitch idea: deglitch only if the middle joint collided this frame?
 - some kinda easteregg in menu or smt
@@ -67,6 +67,7 @@
 
 =========== HANDLED ==============
 
+- add ifdefs that change car color?
 - sometimes getting a SLIGHTLY slower time counts as beating it (prolly
   conversion fail) (SEEMS FIXED NOW)
 - make a small txt game manual

renderer.h

@@ -340,6 +340,27 @@ void _LCR_pixelFunc3D(S3L_PixelInfo *pixel)
       for (int i = 0; i < 6; ++i)
         LCR_renderer.triUVs[i] = (LCR_carUvs[2 * LCR_carTriangleUvs[3 *
           pixel->triangleIndex + i / 2] + i % 2] * (LCR_IMAGE_SIZE + 1)) / 512;
+
+#if (LCR_SETTING_CAR_TINT & 0x7) != 0x07
+      for (int i = 0; i < 256; ++i)
+        LCR_currentImage.palette[i] &=
+  #if LCR_SETTING_CAR_TINT & 0x01
+          0x001f |
+  #else
+          0x0003 |
+  #endif
+  #if LCR_SETTING_CAR_TINT & 0x02
+          0x07e0 |
+  #else
+          0x00e0 |
+  #endif
+  #if LCR_SETTING_CAR_TINT & 0x04
+          0xf800
+  #else
+          0x1800
+  #endif
+        ;
+#endif
     }
     else
     {

settings.h

@@ -233,4 +233,11 @@
   #define LCR_SETTING_POPUP_DURATION 2500
 #endif
 
+#ifndef LCR_SETTING_CAR_TINT
+  /** Tints the car's texture, in lowest 3 bits says which of the RGB
+    components should be retained (1) and which diminished (0). Value 0x07
+    leaves the car untinted (car have slightly better performance). */
+  #define LCR_SETTING_CAR_TINT 0x07
+#endif
+
 #endif // guard