109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
#ifndef SPACEWARPLAYER_H
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#define SPACEWARPLAYER_H
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#include "xyVector.h"
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// A struct storing the needed data to draw a ship:
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typedef struct ship
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{
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int number;
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xyVector engine;
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xyVector gravity;
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xyVector position;
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xyVector velocity;
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SDL_Rect rectangle;
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} ship;
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// A struct to store the input state for one player:
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typedef struct playerController
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{
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SDL_Joystick * joystick;
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SDL_Haptic * haptic;
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int number;
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double turningAmount, acceleratingAmount;
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bool turningClockwise, turningAnticlockwise, accelerating;
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} playerController;
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static inline void calculateGravity(xyVector * starPosition, ship * shipUnderGravity)
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{
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// Calculate the vector between the star and ship:
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xyVectorBetweenPoints(shipUnderGravity->position.xComponent, shipUnderGravity->position.yComponent,
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starPosition->xComponent, starPosition->yComponent, &shipUnderGravity->gravity);
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// Make it into a unit vector:
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double gravityMagnitude = normalizeXYVector(&shipUnderGravity->gravity);
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double gravityAcceleration = 0;
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// Calculate the gravity between the star and ship:
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if(gravityMagnitude != 0)
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{
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if(gravityMagnitude >= 116)
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{
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gravityAcceleration = pow(2, (3000 / (pow(gravityMagnitude, 2)))) / 8;
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}
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else
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{
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shipUnderGravity->position.xComponent = random() % 4000;
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shipUnderGravity->position.yComponent = random() % 4000;
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}
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}
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else
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{
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gravityAcceleration = 1;
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}
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if(gravityAcceleration < 0.01)
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{
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gravityAcceleration = 0.01;
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}
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// Scale the vector:
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multiplyXYVector(&shipUnderGravity->gravity, gravityAcceleration);
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}
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static inline playerController createShipPlayerController(ship * ship)
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{
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playerController newController;
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newController.number = ship->number;
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newController.joystick = NULL;
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return newController;
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}
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// Create a ship with the given parameters:
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static inline ship createShip(int width, int height, double positionX, double positionY, double velocityX, double velocityY, int number)
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{
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ship newShip;
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// Player number:
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newShip.number = number;
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// Rectangle to show the ship in:
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newShip.rectangle.w = width;
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newShip.rectangle.h = height;
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// Position:
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newShip.position.xComponent = positionX;
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newShip.position.yComponent = positionY;
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// Velocity:
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newShip.velocity.xComponent = velocityX;
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newShip.velocity.yComponent = velocityY;
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// Gravity:
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newShip.gravity.xComponent = 0;
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newShip.gravity.yComponent = 0;
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// Engine:
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newShip.engine.yComponent = 0;
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newShip.engine.xComponent = 0.1;
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return newShip;
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}
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// Function prototypes:
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void doShipInput(playerController * controller, ship * ship, xyVector starPosition, double deltaTime);
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void takeNetworkInput(playerController * controller, int descriptor);
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void getPlayerInput(playerController * controller);
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#endif
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