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EventSystem.cpp
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EventSystem.cpp
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//
// Created by Ido Mozes on 08/07/2019.
//
#include "EventSystem.h"
void EventSystem::update(Entities *layers, GameData &gameData) {
SDL_PumpEvents();
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT: {
gameData.isRunning = false;
break;
}
case SDL_MOUSEBUTTONDOWN: {
Entities newEntities;
// Entities entitiesToRemove;
int mouseX, mouseY, originalMouseX;
SDL_GetMouseState(&mouseX, &mouseY);
mouseX = originalMouseX = int(mouseX / gameData.mapScale);
mouseY = int(mouseY / gameData.mapScale);
for (int i = N_LAYERS - 1; i >= 0; --i) {
for (auto &entity: layers[i]) {
if (auto components = entity->getComponents<Action, Visibility>()) {
auto[action, visibility] = components.value();
if (action.disabled or (action.actionType != DROP and gameData.isDragging))
continue;
int entityX, entityY, w, h;
entityX = visibility.getDstRect()->x;
entityY = visibility.getDstRect()->y;
w = visibility.getDstRect()->w;
h = visibility.getDstRect()->h;
if (auto positionP = entity->getComponent<Position>()) {
auto &position = *positionP;
entityX = int(position.getX() - w / 2.0);
entityY = int(position.getY() - h / 2.0);
mouseX = originalMouseX - SIDEBAR_WIDTH;
} else
mouseX = originalMouseX;
if (entityX <= mouseX and mouseX <= entityX + w and entityY <= mouseY and
mouseY <= entityY + h) {
switch (action.actionType) {
case DRAG: {
auto &kind = *entity->getComponent<Kind>();
auto draggable = new Entity();
SDL_Surface *surface = gameData.assets[kind.kind];
draggable->addComponent<Visibility>(gameData.renderer, surface, SDL_Rect{
originalMouseX - int(surface->w / 2.0), mouseY - int(surface->h / 2.0),
surface->w, surface->h}, 100);
draggable->addComponent<Draggable>();
draggable->addComponent<Action>(DROP);
draggable->addComponent<Kind>(kind);
newEntities.emplace_back(draggable);
gameData.isDragging = true;
goto entityClicked;
}
case CLICK: {
goto entityClicked;
}
case DROP: {
auto &draggable = *entity->getComponent<Draggable>();
if (draggable.isPlaceable) {
entity->removeComponent<Draggable>();
entity->getComponent<Action>()->actionType = CLICK;
gameData.isDragging = false;
}
goto entityClicked;
}
}
}
}
}
}
entityClicked:
layers[3] += newEntities;
break;
}
default:
break;
}
}
}

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