From 31d820b4b9357de23610b7da87d621a81580e3be Mon Sep 17 00:00:00 2001
From: Miloslav Ciz <drummyfish@disroot.org>
Date: Thu, 29 Aug 2024 15:38:44 +0200
Subject: [PATCH] Adjust block LODs a bit

---
 constants.h |  4 ++++
 renderer.h  | 34 +++++++++++++++++++++++-----------
 2 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/constants.h b/constants.h
index 840236c..d5a0468 100644
--- a/constants.h
+++ b/constants.h
@@ -12,6 +12,10 @@
 #define LCR_FREE_CAMERA_STEP \
   (LCR_SETTING_FREE_CAMERA_SPEED / LCR_SETTING_FPS)
 
+#if LCR_FREE_CAMERA_STEP == 0
+  #define LCR_FREE_CAMERA_STEP 1
+#endif
+
 #define LCR_FREE_CAMERA_TURN_STEP \
   (LCR_SETTING_FREE_CAMERA_TURN_SPEED / LCR_SETTING_FPS)
 
diff --git a/renderer.h b/renderer.h
index 3b95008..9445f11 100644
--- a/renderer.h
+++ b/renderer.h
@@ -816,7 +816,7 @@ void LCR_rendererDrawRect(int x, int y, unsigned int w, unsigned int h,
 }
 
 void _LCR_rendererDrawLODBlock(int blockX, int blockY, int blockZ, unsigned int size,
-  uint16_t color)
+  uint16_t color, uint8_t variability)
 {
   S3L_Vec4 p, r;
 
@@ -836,10 +836,23 @@ void _LCR_rendererDrawLODBlock(int blockX, int blockY, int blockZ, unsigned int
   if (r.w > 0 && r.z > LCR_SETTING_LOD_DISTANCE * LCR_RENDERER_UNIT &&
     r.w < LCR_EFFECTIVE_RESOLUTION_X)
   {
-    LCR_rendererDrawRect(r.x - r.w / 2,r.y - r.w / 2,(5 * r.w) / 8,
-      (5 * r.w) / 8,color,1);
-    LCR_rendererDrawRect(r.x - r.w / 4,r.y,
-      (3 * r.w) / 4,r.w / 2,color,1);
+    switch (variability % 4)
+    {
+      case 0:  r.w += r.w / 4; r.x += LCR_BLOCK_SIZE / 8; break;
+      case 1:  r.w += r.w / 8; r.y -= LCR_BLOCK_SIZE / 16; break;
+      case 2:  r.w += r.w / 4; break;
+      default: r.z += LCR_BLOCK_SIZE / 8; break;
+    }
+
+    if (variability % 8 < 5)
+      LCR_rendererDrawRect(r.x - r.w / 2,r.y - r.w / 2,r.w,r.w,color,1);
+    else
+    {
+      r.w /= 2;
+      LCR_rendererDrawRect(r.x - r.w / 2,r.y - r.w / 2,r.w,r.w,color,1);
+      r.w += r.w / 2;
+      LCR_rendererDrawRect(r.x - r.w / 8,r.y - r.w / 4,r.w,r.w,color,1);
+    }
   }
 }
 
@@ -1051,6 +1064,8 @@ void _LCR_rendererLoadMapChunks(void)
 void LCR_rendererDrawLOD(void)
 {
 #if LCR_SETTING_LOD_DISTANCE < 64
+  int variability = 0;
+
   for (unsigned int i = 0; i < LCR_RENDERER_LOD_BLOCKS; ++i)
     if (LCR_renderer.gridOfLODs[i])
     {
@@ -1060,18 +1075,15 @@ void LCR_rendererDrawLOD(void)
       bz = (i / 8) * 8 + 4;
       by = (i % 8) * 8 + 4;
 
-      int var = 0;
-
       for (unsigned int j = 0; j < 8; ++j)
       {
         if (byte & 0x01)
         {
-          var = var < 2 ? var + 1 : 0;
+          variability = variability < 14 ? variability + 1 : 0;
           bx = j * 8 + 4;
 
-          _LCR_rendererDrawLODBlock(bx,by,bz,
-            (LCR_EFFECTIVE_RESOLUTION_X * (2 + var)) / 2,
-            LCR_SETTING_LOD_COLOR | (0x4108 >> var));
+          _LCR_rendererDrawLODBlock(bx,by,bz,(4 * LCR_EFFECTIVE_RESOLUTION_Y)
+            / 3,LCR_SETTING_LOD_COLOR,variability);
         }
 
         byte >>= 1;