Added proper mod function.

src/engine/engine.c

@@ -52,7 +52,7 @@ engine_t * engineInit(platform_t *platform, char *name, uint32_t inputCount) {
   shaderUseCamera(shader, camera);
 
   list = chunkListCreate(3, 3, 3);
-  chunkListShift(list, -1, 0, 0);
+  chunkListShift(list, 1, 0, 0);
 
   // Test
   // primitive = quadCreate(

src/engine/util/math.h

@@ -0,0 +1,8 @@
+// Copyright (c) 2021 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+
+#define mod(a,b) (a%b+b)%b

src/engine/world/chunklist.c

@@ -89,9 +89,9 @@ void chunkListShift(chunklist_t *list, int32_t x, int32_t y, int32_t z) {
     chunk = list->chunkList[i];
 
     // Calculate the new local positions for the chunk.
-    nx = (chunk->x - list->x - x) % list->width;
-    ny = (chunk->y - list->y - y) % list->height;
-    nz = (chunk->z - list->z - z) % list->depth;
+    nx = mod(chunk->x - list->x - x, list->width);
+    ny = mod(chunk->y - list->y - y, list->height);
+    nz = mod(chunk->z - list->z - z, list->depth);
 
     // Load the chunk if we need to. We also use this to calculate new absolutes
     if(

src/engine/world/chunklist.h

@@ -7,6 +7,7 @@
 #include <stdint.h>
 #include <malloc.h>
 #include "chunk.h"
+#include "./../util/math.h"
 
 #define CHUNK_INDEX_NULL = 0