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MovementSystem.cpp
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MovementSystem.cpp
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//
// Created by Ido Mozes on 02/07/2019.
//
#include "MovementSystem.h"
enum Directions {
RIGHT, BOTTOM_RIGHT, BOTTOM, BOTTOM_LEFT, LEFT, TOP_LEFT, TOP, TOP_RIGHT
};
std::tuple<int, int> getDelta(int direction) {
switch (direction) {
case RIGHT:
return std::make_tuple(1, 0);
case BOTTOM_RIGHT:
return std::make_tuple(1, 1);
case BOTTOM:
return std::make_tuple(0, 1);
case BOTTOM_LEFT:
return std::make_tuple(-1, 1);
case LEFT:
return std::make_tuple(-1, 0);
case TOP_LEFT:
return std::make_tuple(-1, -1);
case TOP:
return std::make_tuple(0, -1);
case TOP_RIGHT:
return std::make_tuple(1, -1);
default:
return std::make_tuple(0, 0);
}
}
void MovementSystem::update(Entities *layers, GameData &gameData) {
for (int i = 0; i < N_LAYERS; ++i) {
for (auto &entity: layers[i]) {
// Move all entities with Visibility and Position
if (auto components = entity->getComponents<Visibility, Position>()) {
auto[visibility, position]=components.value();
float deltaX = 0, deltaY = 0;
if (auto velocityP = entity->getComponent<Velocity>()) {
auto &velocity = *velocityP;
if (auto accelerationP = entity->getComponent<Acceleration>()) {
auto &acceleration = *accelerationP;
velocity.changeVelocity(acceleration.value.X, acceleration.value.Y);
}
deltaX = velocity.value.X;
deltaY = velocity.value.Y;
if (auto distanceP = entity->getComponent<Distance>()) {
auto &distance = distanceP->value;
auto[alpha, R] = cartesianToPolar(deltaX, deltaY);
if (distance == 0) {
entity->addComponent<RemoveEntityEvent>();
} else if (distance >= R) {
distance -= R;
} else {
std::tie(deltaX, deltaY) = polarToCartesian(alpha, distance);
distance = 0;
}
}
} else if (auto pathIndexP = entity->getComponent<PathIndex>()) {
auto &pathIndex = *pathIndexP;
pathIndex.progress += getSpeed(entity);
float deltaIndex = pathIndex.progress - pathIndex.index;
if(entity->getComponent<Kind>()->value>=MOAB) {
float angle = 0;
Point tempPosition = position.value;
for (int j = std::max(0,pathIndex.index-10);
j < std::min(pathIndex.index + 10, int(gameData.path.size() - 1)); ++j) {
auto[tempDeltaX, tempDeltaY] = getDelta(gameData.path[j]);
tempPosition.X += tempDeltaX;
tempPosition.Y += tempDeltaY;
}
angle = radToDeg(twoPointsAngle( position.value,tempPosition));
visibility.angle=angle;
}
while (deltaIndex >= (gameData.path[pathIndex.index] % 2 == 0 ? 1 : sqrt(2))) {
auto[tempDeltaX, tempDeltaY] = getDelta(gameData.path[pathIndex.index]);
deltaX += tempDeltaX;
deltaY += tempDeltaY;
deltaIndex -= (gameData.path[pathIndex.index] % 2 == 0 ? 1 : sqrt(2));
if (pathIndex.index < gameData.path.size() - 1)
pathIndex.index++;
}
}
position.changePosition(deltaX, deltaY);
if (position.value.X > MAP_WIDTH or position.value.X < 0 or position.value.Y > MAP_HEIGHT or
position.value.Y < 0) {
entity->addComponent<RemoveEntityEvent>();
}
}
}
}
}

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