In this part of the tutorial, the analysis of the ball movement is continued. The effects of the collision events are introduced in the equations of movement. [sociallocker][/sociallocker] Excel PONG Tutorial #5 by George Lungu – combining kinematics with collision events – In this tutorial (which is a continuation of part#4) the kinematics of the ball is further analyzed… Read More... "How to make a game of PONG in Excel – part #5"
In this part of the tutorial the analysis of the ball movement is taken farther, to include such effects as bouncing off the walls of the court and collision with the bats. [sociallocker][/sociallocker] Excel PONG Tutorial #4 – combining kinematics with collision events by George Lungu – In this tutorial (which is a continuation of part#3) the kinematics of… Read More... "How to make a game of PONG in Excel – part #4"
In this tutorial (which is a continuation of part#2) the kinematics of the ball starts being implemented. Two new macros are being introduced, the “Serve” macro and the “Play” macro. [sociallocker][/sociallocker] Excel PONG Tutorial #3 – ball kinematics analysis – the serve by George Lungu – In this tutorial (which is a continuation of part#2) the kinematics of the ball… Read More... "How to make a game of PONG in Excel – part #3"
In this section two bats are created (the opponent’s bat and the player’s bat). The player’s bat movements are controlled by the vertical mouse movement. The geometry of movement, placement and charting of the bats are explained. [sociallocker][/sociallocker] Excel PONG Tutorial #2 – creating the pong bat animation with various options by George Lungu -In this tutorial (which is a… Read More... "How to make a game of PONG in Excel – part #2"
This post contains the first part of a series of tutorials demonstrating how to build a lively game of Pong in Excel. The section deals with the bat movement VBA macro, and plotting the “court” or “tennis-table” on a 2D scatter chart. [sociallocker][/sociallocker] Excel PONG Tutorial #1 – creating the pong table and bat animation by George Lungu PONG facts:… Read More... "How to make a game of PONG in Excel – part #1"
In this tutorial, most of the calculations for the numerical simulation a SMD (spring-mas-damper) system will be consolidated into a single formula, the coordinate formula. In this case, in order to calculate the coordinate at the end of a any time step, we will need just the coordinates from the previous two time steps and of course the input parameters (constants). These… Read More... "Casual Introduction to Numerical Methods – spring-mass-damper system model – part#5"
This tutorial explains the principles to generating animation for the spring-mass-damper system analyzed in the previous presentations. [sociallocker][/sociallocker] A casual approach to numerical modeling – part #4 – a Spring-Mass-Damper-System – creating the animation by George Lungu – We are trying to generate animation for the system sketched above knowing the deviation from the equilibrium function of time. This deviation is… Read More... "Casual Introduction to Numerical Methods – spring-mass-damper system model – part#4"
In the this tutorial, after we got most of the trajectory calculation concentrated in just two columns, we will write a custom VBA function (dual output) to replace the spreadsheet computations used. This process of starting with very simple models, then refining the calculations and then learning how to write custom functions for those calculations will be extremely useful later for developing more complex models. [sociallocker][/sociallocker]… Read More... "2D Projectile Motion Tutorial #7"
This tutorial simplifies the previous model and manages to describe the (x,y) flight coordinates using just two formulas placed on columns D and E. A custom VBA trajectory function will be introduced in the next section which preserves the effects of gravity and aerodynamic drag. [sociallocker][/sociallocker] Projectile Motion Tutorial #5 by George Lungu – a 2D projectile motion model of projectile dynamics including… Read More... "2D Projectile Motion Tutorial #6"
The macro in this tutorial creates a near exponential variable conversion to be used for very large dynamic range input data entry . If for instance, we have to adjust a parameter from 1 to 1 million we can either make a spin button which can go from 1 to 1 million in unity steps (which would take for ever), or implement… Read More... "Near-Exponential VBA Conversion"
This is the next in a series of projectile motion tutorials for creating 2D trajectory models using numerical analysis of projectile dynamics (including aerodynamic drag). The trajectory formulas were derived in the previous tutorial. This post describes the Excel implementation (spreadsheet formulas, VBA code, buttons and charts). [sociallocker][/sociallocker] Projectile Motion Tutorial #5 – a 2D projectile motion model using numerical analysis of projectile dynamics (including aerodynamic drag)… Read More... "2D Projectile Motion Tutorial #5"
Most of the models on this blog are designed for Excel 2003 or earlier versions. Sometimes however, Excel 2007 or 2010 are the only versions available even though they might be far slower when running these models. This presentation is an introduction to Excel 2007 and it was suggested to me by one of my readers. [sociallocker] [/sociallocker] Creating, Sizing,… Read More... "Creating, Sizing, Translating and Rotating 2D Shapes in Excel 2007"
In certain models we need to be able to change the scale of the chart axes function of the result of a simulation. Excel charts do have auto-scaling as a default option but sometimes the scaling values we get are not what we need. Another reason against using auto-scaling is that during the time the model runs, the scale self-adjusts and… Read More... "Easy Zoom – Chart Axis Scaling Using VBA"
This tutorial derives the formulas of a projectile model taking into account the aerodynamic drag. A finite differences numerical method is used. Though fairly easy to apply and understand, this type of methods can solve much more complex problems than the high-school type approach shown in the previous tutorials. An Excel model will be implemented in the next section. Projectile Motion… Read More... "2D Projectile Motion Tutorial #4"