Updated font, added interactions and testing frames.

src/duskgl/display/shader/entityshader/entity_frag.glsl

@@ -15,5 +15,7 @@ out vec4 FragColor;
 
 void main() {
   vec4 tColor = tilesetGetColor(uint(TILESET_SLOT_ENTITIES), v_TextureCoord);
+  if(tColor.a == 0.0) discard;
+  if(tColor.r == 0.0) discard;
   FragColor = vec4(1, 1, 1, 1) * tColor;
 }