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game.system.Collision = (entitiesGrid) => {
const update = (elapsedTime, entities, changedIds) => {
const thisChangedIds = new Set();
for (let entity of Object.keys(entities).map((id) => entities[id])) {
if (entity.hasComponent("position") && entity.hasComponent("gridPosition") && (entity.hasComponent("burnable") || entity.hasComponent("sinkable")) && entity.hasComponent("alive")) {
for (let collided of entitiesGrid[entity.components.gridPosition.y][entity.components.gridPosition.x].values()) {
if (!equivalence(entity, collided) && collided.hasComponent("alive")){
if (entity.hasComponent("burnable") && collided.hasComponent("burn")) {
const burnedParticleSpawner = game.createBorderParticles({colors: ["#f58d42", "#d6600b", "#c7a312", "#f2b844"]});
burnedParticleSpawner.addComponent(game.components.Position(collided.components.position));
burnedParticleSpawner.addComponent(game.components.Appearance({width: game.canvas.width / game.config.xDim, height: game.canvas.height / game.config.yDim}));
game.entities[burnedParticleSpawner.id] = burnedParticleSpawner;
entity.removeComponent("alive");
break;
} else if (entity.hasComponent("sinkable") && collided.hasComponent("sink")) {
const sunkParticleSpawner = game.createBorderParticles({colors: ["#16f7c9", "#0d6e5a", "#2fa18a", "#48cfb4", "#58877d", "#178054", "#2cdb92"]});
sunkParticleSpawner.addComponent(game.components.Position(collided.components.position));
sunkParticleSpawner.addComponent(game.components.Appearance({width: game.canvas.width / game.config.xDim, height: game.canvas.height / game.config.yDim}));
game.entities[sunkParticleSpawner.id] = sunkParticleSpawner;
entity.removeComponent("alive");
collided.removeComponent("alive");
break;
}
}
}
}
if (entity.hasComponent("controllable") && entity.hasComponent("gridPosition")) {
for (let collided of entitiesGrid[entity.components.gridPosition.y][entity.components.gridPosition.x].values()) {
if (collided.hasComponent("win")) {
game.systems.menu.bringUpMenu();
game.systems.menu.setState("levelSelect");
}
}
if (entity.hasComponent("momentum")) {
const momentum = unitize(entity.components.momentum);
let found;
const proposed = {x: entity.components.gridPosition.x + momentum.dx, y: entity.components.gridPosition.y + momentum.dy};
const entitiesToPush = [];
let wall = false;
do {
const proposedClampedInBounds = clamp(proposed, game.config.xDim-1, game.config.yDim-1);
if (!equivalence(proposed, proposedClampedInBounds)) {
break;
}
found = false;
const entitiesInCell = entitiesGrid[proposed.y][proposed.x];
for (let next of entitiesInCell.values()) {
if (next.hasComponent("alive")) {
if (next.hasComponent("stop")) {
wall = next;
found = false;
break;
}
if (next.hasComponent("pushable")) {
entitiesToPush.push(next);
found = true;
}
}
}
proposed.x += momentum.dx;
proposed.y += momentum.dy;
} while(found);
if (wall) {
entity.removeComponent("momentum");
} else {
entitiesToPush.map((e) => {
const pushedParticleSpawner = game.createBorderParticles({maxSpeed: 0.1, minAmount: 10, maxAmount: 15});
pushedParticleSpawner.addComponent(game.components.Position(e.components.position));
pushedParticleSpawner.addComponent(game.components.Appearance({width: game.canvas.width / game.config.xDim, height: game.canvas.height / game.config.yDim}));
game.entities[pushedParticleSpawner.id] = pushedParticleSpawner;
e.addComponent(game.components.Momentum({...momentum}));
});
}
}
}
}
return thisChangedIds;
};
return { update };
};
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