Did a lot of work on the engine

include/dawn/util/math.h

@@ -0,0 +1,18 @@
+// Copyright (c) 2021 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+
+/**
+ * Returns the modulous a result for b. Consdiders negative numbers correctly.
+ * @param a Number to modulo against. (a % b)
+ * @param b Number to modulo with. (a % b)
+ */
+#define mathMod(a,b)  (a%b+b)%b
+#define mathMax(a,b)  (a<b?b:a)
+#define mathMin(a,b)  (a>b?b:a)
+#define mathAbs(n)    (n<0?-n:n)
+#define mathDeg2Rad(n) (n * M_PI / 180.0)
+#define mathRad2Deg(n) (n * 180 / M_PI)

include/dawn/util/rand.h

@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include <dawn/dawn.h>
+
+/**
+ * Generate a number between 0 and max. (max exclusive)
+ * 
+ * @param max Max number to generate
+ * @return Number between 0 and max.
+ */
+#define u32rand(max) (rand()%max)
+#define u8rand(max) (uint8_t)u23rand(max)
+
+/**
+ * Generate a number between min and max. (max exclusive, min inclusive)
+ * 
+ * @param min Min number to generate.
+ * @param max Max number to generate.
+ * @return Number between min and max.
+ */
+#define u32randRange(min, max) (u32rand(max-min)+min)
+#define u8randRange(min, max) (uint8_t)u32randRange(min,max)