failed to add orbiting camera

src/util/dynarray.c

@@ -0,0 +1,63 @@
+#include "dynarray.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include <memory.h>
+
+DynamicArray create_dynamic_array_from_size(size_t type_size)
+{
+	DynamicArray array;
+
+	array.capacity = 5;
+	array.size = 0;
+	array.element_size = type_size;
+
+	array.data = malloc(type_size * array.capacity);
+	if (array.data == NULL)
+	{
+		array.capacity = 0;
+		fprintf(stderr, "Failed to allocate memory for dynamic array\n");
+	}
+
+	return array;
+}
+
+void destroy_dynamic_array(DynamicArray array)
+{
+	assert(array.capacity > 0);
+
+	free(array.data);
+	array.capacity = 0;
+}
+
+void* dynamic_array_get(DynamicArray* array, size_t i)
+{
+	return (void*)((char*)array->data + (i * array->element_size));
+}
+
+void dynamic_array_push(DynamicArray* array, void* element)
+{
+	assert(array->capacity > 0);
+
+	if (array->size == array->capacity)
+	{
+		array->capacity *= (3 / 2);
+		array->data = realloc(array->data, array->element_size * array->capacity);
+	}
+
+	memcpy((void*)((char*)array->data + (array->size * array->element_size)), element, array->element_size);
+	array->size++;
+}
+
+void dynamic_array_pop(DynamicArray* array)
+{
+	assert(array->capacity > 0);
+
+	array->size -= 1;
+	if (array->size <= array->capacity / 2 && array->capacity > 5)
+	{
+		array->capacity = (2 / 3) * array->capacity + 1;
+		array->data = realloc(array->data, array->capacity);
+	}
+}