random sound selection for triggers

src/util/math_.cpp

@@ -1,5 +1,6 @@
 #include "math.h"
 
+#include <ctime>
 #include <glm/ext/matrix_transform.hpp>
 #include <string>
 
@@ -76,4 +77,7 @@ namespace anm2ed::util::math
     return glm::translate(mat4(1.0f), vec3(position, 0.0f)) * local;
   }
 
+  float random() { return (float)rand() / RAND_MAX; }
+  float random_in_range(float min, float max) { return min + random() * (max - min); }
+  void random_seed_set() { srand(std::time(nullptr)); }
 }

src/util/math_.h

@@ -5,25 +5,13 @@
 
 namespace anm2ed::util::math
 {
-  template <typename T> constexpr T percent_to_unit(T value)
-  {
-    return value / 100.0f;
-  }
+  template <typename T> constexpr T percent_to_unit(T value) { return value / 100.0f; }
 
-  template <typename T> constexpr T unit_to_percent(T value)
-  {
-    return value * 100.0f;
-  }
+  template <typename T> constexpr T unit_to_percent(T value) { return value * 100.0f; }
 
-  constexpr float uint8_to_float(int value)
-  {
-    return (float)(value / 255.0f);
-  }
+  constexpr float uint8_to_float(int value) { return (float)(value / 255.0f); }
 
-  constexpr int float_to_uint8(float value)
-  {
-    return (int)(value * 255);
-  }
+  constexpr int float_to_uint8(float value) { return (int)(value * 255); }
 
   constexpr std::array<float, 16> uv_vertices_get(glm::vec2 uvMin, glm::vec2 uvMax)
   {
@@ -41,4 +29,8 @@ namespace anm2ed::util::math
 
   glm::mat4 quad_model_get(glm::vec2 = {}, glm::vec2 = {}, glm::vec2 = {}, glm::vec2 = glm::vec2(1.0f), float = {});
   glm::mat4 quad_model_parent_get(glm::vec2 = {}, glm::vec2 = {}, glm::vec2 = glm::vec2(1.0f), float = {});
+
+  float random();
+  float random_in_range(float min, float max);
+  void random_seed_set();
 }