Adding some shot utilities. Needs review

This commit is contained in:
2026-01-22 16:34:03 -05:00
parent c2cb06748c
commit 7c4a381f2b

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@@ -9,6 +9,8 @@ public class Utilities {
static Boolean Blue = false; static Boolean Blue = false;
static Boolean Red = false; static Boolean Red = false;
public static final double kG = -9.81;
public static Alliance ShiftFirst() { public static Alliance ShiftFirst() {
gameData = DriverStation.getGameSpecificMessage(); gameData = DriverStation.getGameSpecificMessage();
@@ -27,4 +29,52 @@ public class Utilities {
return null; return null;
} }
/**
* A ChatGPT possible hallucination related to calcuating whether a shot is possible
* for a given speed and change in X and Y position
*
* Note that X in this scenario is the physical distance from the shooter exit to
* target. Y is the change in height from the shooter exit to the target height
*
* TODO Review ChatGPT's math more thoroughly, preferably with someone with fresher math skills
*
* @param targetVMPS The target velocity of the shooter in Meters per Second
* @param deltaXM The "as the crow flies" distance between the shooter exit and the target
* @param deltaYM The height difference between the shooter exit and the target
* @return A true or false value indicating whether the shot is possible
*/
public static boolean shotPossible(double targetVMPS, double deltaXM, double deltaYM) {
return Math.pow(targetVMPS, 4) >=
-9.81 * (-9.81 * Math.pow(deltaXM, 2) + 2 * deltaYM * Math.pow(targetVMPS, 2));
}
/**
* A ChatGPT possible hallucination that calculates the angle required to make a shot for
* a given speed and change in X and Y position
*
* Note that X in this scenario is the physical disatance from the shooter exit to
* target. Y is the change in height from the shooter exit to the target height
*
* Setting softerShot to true changes the angle of attack to a soft, long range shot. False
* makes the shot more of a lob
*
* TODO Review ChatGPT's math more thoroughly, preferably with someone with fresher math skills
*
* @param targetVMPS The target velocity of the shooter in Meters per Second
* @param deltaXM The "as the crow flies" distance between the shooter exit and the target
* @param deltaYM The height difference between the shooter exit and the target
* @param softerShot True for a long range shot, false for a short range lob
* @return The angle required of the shooter to make the shot described by the input parameters
*/
public static double shotAngle(double targetVMPS, double deltaXM, double deltaYM, boolean softerShot) {
double vPow2 = Math.pow(targetVMPS, 2);
double vPow4 = Math.pow(targetVMPS, 4);
double sqrtPiece = Math.sqrt(vPow4 - kG * (kG * Math.pow(deltaXM, 2) + 2 * deltaYM * vPow2));
if(softerShot) {
return Math.atan((vPow2 - sqrtPiece) / (kG * deltaXM));
} else {
return Math.atan((vPow2 + sqrtPiece) / (kG * deltaXM));
}
}
} }