mouse support, solved some funcs clash on linux, started sprite editor

mini.h

@@ -181,17 +181,24 @@ void map(uint8_t celx, uint8_t cely, int sx, int sy, uint8_t celw, uint8_t celh,
 bool btn(uint8_t i);
 bool btnp(uint8_t i);
 
+int mouseX();
+int mouseY();
+bool mouseButton(uint8_t i);
+
 float time();
 
 //float abs(float x);
-float ceil(float x);
+
 float flr(float x);
 float sgn(float x);
 
+#ifndef __LINUX__
+float ceil(float x);
 float sin(float x);
 float cos(float x);
 float atan2(float dx, float dy);
 float sqrt(float x);
+#endif
 
 float max(float x, float y);
 float mid(float x, float y, float z);