ROCKET SIMULATOR V 0.02 WORK IN PROGRESS!!! STILL EXPERIMENTAL!!! ~ Instructions~ Arrow Keys - Launch Angle & Thrust w & s - Impulse Space Bar - Launch Rocket ~~ How it Works ~~ Several formulas are used to calculate flight angle, thrust, drag, and much more: 1. Flight Angle = Arctangent(Velocity X/Velocity Y) 2. Drag Force = 0.5 * Air Density * Drag Coefficient * Area * Velocity^2 3. X Drag Force = Drag Force * Sin(Flight Angle) 4. Y Drag Force = Drag Force * Cos(Flight Angle) 5. Thrust is a constant value of newtons, default set to 10 6. X Thrust = Thrust * Sin(Flight Angle) 7. Y Thrust = Thrust * Cos(Flight Angle) 8. Total Force = Sqrt[(Total Force Y)^2 + (Total Force X)^2] 9. Total Force X = Thrust X - Drag Force X 10. Total Force Y = Thrust Y - Drag Force Y - Gravitational Force 11. Gravitational Force = Mass * Gravity 12. Acceleration X = Total Force X/Mass 13. Acceleration Y = Total Force Y/Mass 14. Velocity X = Velocity X + Acceleration X * Calculation Time 15. Velocity Y = Velocity Y + Acceleration Y * Calculation Time 16. Rocket X Position = X(Previous) + Vx * Calculation Time 17. Rocket Y Position = Y(Previous) + Vy * Calculation Time ~~Changelog~~ v0.01 Old *Rocket Simulation Engine *Adjust Launch Direction, Impulse, & Thrust *Background Scrolling Engine v0.02 Updated *Fixed Background FUTURE *Smoke trail *Wind w/ Flag Sprite *Fixed Rocket Fall Bug *Launchpad Engine *Display Variable Labels *Several Bug Fixes *Minimap w/ dotted trajectory trail Formulas from: my.execpc.com/~culp/rockets/rckt_sim2D.html Scrolling from: http://scratch.mit.edu/projects/archmage/82995 Thanks a lot! Please comment and love it!