fixed level background plane and image
added main menu background image
Fix missing include to <climits> and <cmath> in DefensiveEnemy and ShootingEnemy. Fix camera changes for Linux.
Update Linux renderer to accept texture tint.
Initialize tint variable.
Use correct access type for a pointer.
Add a missing default value.
Windowed mode and re-enable mouse cursor for debugging purposes.
Minor fixes.
Camera position fix.
Camera tilt fix.
Another tilt fix.
Fix model tint and background color.
Fix Z-phase init for shooting enemies to match defensive enemies.
Replace abs(int) with fabs(float) and include <cmath> in Ball.cpp.
Include missing <climits> for EnemySquad.cpp.
Update GameScene int->str conversion to use stringstream instead of C++11 function to_wstring.
Use wide character stringstream for conversion (addition to previous commit).
Add structure for RenderText function.
Fix typo.