func (cs *CollisionSystem) Update(entity *ecs.Entity, dt float32) {
var (
space *SpaceComponent
collision *CollisionComponent
ok bool
)
if space, ok = entity.ComponentFast(space).(*SpaceComponent); !ok {
return
}
if collision, ok = entity.ComponentFast(collision).(*CollisionComponent); !ok {
return
}
if !collision.Main {
return
}
var (
otherSpace *SpaceComponent
otherCollision *CollisionComponent
)
for _, other := range cs.Entities() {
if other.ID() != entity.ID() {
if otherSpace, ok = other.ComponentFast(otherSpace).(*SpaceComponent); !ok {
return
}
if otherCollision, ok = other.ComponentFast(otherCollision).(*CollisionComponent); !ok {
return
}
entityAABB := space.AABB()
offset := Point{collision.Extra.X / 2, collision.Extra.Y / 2}
entityAABB.Min.X -= offset.X
entityAABB.Min.Y -= offset.Y
entityAABB.Max.X += offset.X
entityAABB.Max.Y += offset.Y
otherAABB := otherSpace.AABB()
offset = Point{otherCollision.Extra.X / 2, otherCollision.Extra.Y / 2}
otherAABB.Min.X -= offset.X
otherAABB.Min.Y -= offset.Y
otherAABB.Max.X += offset.X
otherAABB.Max.Y += offset.Y
if IsIntersecting(entityAABB, otherAABB) {
if otherCollision.Solid && collision.Solid {
mtd := MinimumTranslation(entityAABB, otherAABB)
space.Position.X += mtd.X
space.Position.Y += mtd.Y
}
Mailbox.Dispatch(CollisionMessage{Entity: entity, To: other})
}
}
}
}
func (m *Maze) Update(entity *ecs.Entity, dt float32) {
if entity.ID() != m.playerEntity.ID() {
return
}
var (
move *MovementComponent
ok bool
)
if move, ok = entity.ComponentFast(move).(*MovementComponent); ok {
return // because we're still moving!
}
if m.currentLevel.Width == 0 || m.currentLevel.Height == 0 {
return // because there's no maze
}
oldX, oldY := m.currentLevel.PlayerX, m.currentLevel.PlayerY
if m.currentLevel.Grid[oldY][oldX] == TileGoal {
// Goal achieved!
if strings.HasPrefix(m.currentLevel.Name, "Random ") {
engi.Mailbox.Dispatch(MazeMessage{})
return
}
if m.sequence != SequenceNone {
m.cleanup()
m.initialize("")
return
}
}
switch m.Controller.Action(m.currentLevel) {
case ActionUp:
m.currentLevel.PlayerY--
case ActionDown:
m.currentLevel.PlayerY++
case ActionLeft:
m.currentLevel.PlayerX--
case ActionRight:
m.currentLevel.PlayerX++
case ActionStop:
return // so don't move
}
if !m.currentLevel.IsAvailable(m.currentLevel.PlayerX, m.currentLevel.PlayerY) {
m.currentLevel.PlayerX, m.currentLevel.PlayerY = oldX, oldY
return // because it's an invalid move
}
entity.AddComponent(&MovementComponent{
From: engi.Point{float32(oldX) * tileWidth, float32(oldY) * tileHeight},
To: engi.Point{float32(m.currentLevel.PlayerX) * tileWidth, float32(m.currentLevel.PlayerY) * tileHeight},
In: time.Second / moveSpeed,
Callback: func() {
if m.currentLevel.Grid[m.currentLevel.PlayerY][m.currentLevel.PlayerX] == TileRoute {
m.currentLevel.Grid[m.currentLevel.PlayerY][m.currentLevel.PlayerX] = TileBlank
m.currentLevel.GridEntities[m.currentLevel.PlayerY][m.currentLevel.PlayerX].AddComponent(tileBlank)
} else if m.currentLevel.Grid[oldY][oldX] == TileError ||
m.currentLevel.Grid[oldY][oldX] == TileBlank {
m.currentLevel.Grid[oldY][oldX] = TileRoute
if m.currentLevel.Grid[m.currentLevel.PlayerY][m.currentLevel.PlayerX] == TileHiddenError {
m.currentLevel.Grid[m.currentLevel.PlayerY][m.currentLevel.PlayerX] = TileError
}
}
},
})
}