[ADD] main character,

smoke particle when shooting,
fire effect to player

src/toolbox/toolbox.c

@@ -0,0 +1,9 @@
+#include "toolbox.h"
+
+float toolbox_random_float(float a, float b)
+{
+    float random = ((float)rand()) / (float)RAND_MAX;
+    float diff = b - a;
+    float r = random * diff;
+    return a + r;
+}