/
eventmgr.go
67 lines (57 loc) · 1.47 KB
/
eventmgr.go
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package sdl
import (
gosdl "github.com/veandco/go-sdl2/sdl"
"tetris/lib"
)
type EventMgr struct {
C chan lib.Movement
}
var defaultInputMap map[gosdl.Keycode]lib.Movement
var debugInputMap map[gosdl.Keycode]lib.Movement
func init() {
defaultInputMap = map[gosdl.Keycode]lib.Movement{
gosdl.K_DOWN: lib.MOVE_DOWN,
gosdl.K_UP: lib.MOVE_ROTATE_LEFT,
gosdl.K_LEFT: lib.MOVE_LEFT,
gosdl.K_RIGHT: lib.MOVE_RIGHT,
gosdl.K_a: lib.MOVE_ROTATE_LEFT,
gosdl.K_d: lib.MOVE_ROTATE_RIGHT,
gosdl.K_SPACE: lib.MOVE_SLAM,
}
debugInputMap = map[gosdl.Keycode]lib.Movement{
gosdl.K_UP: lib.MOVE_UP,
gosdl.K_DOWN: lib.MOVE_DOWN,
gosdl.K_LEFT: lib.MOVE_LEFT,
gosdl.K_RIGHT: lib.MOVE_RIGHT,
gosdl.K_a: lib.MOVE_ROTATE_LEFT,
gosdl.K_d: lib.MOVE_ROTATE_RIGHT,
gosdl.K_SPACE: lib.MOVE_SLAM,
gosdl.K_s: lib.MOVE_FORCE_DOWN,
}
}
func NewEventMgr(inC chan gosdl.Event, debug bool) *EventMgr {
mapping := defaultInputMap
if debug {
mapping = debugInputMap
}
outC := make(chan lib.Movement)
// Process all events
go func() {
var code gosdl.Keycode
var kevt *gosdl.KeyboardEvent
for evt := range inC {
if evt.GetType() == gosdl.KEYDOWN {
// Must be a keyboard event, cast it, and then get
// it's keycode
kevt = evt.(*gosdl.KeyboardEvent)
code = kevt.Keysym.Sym
outMove, ok := mapping[code]
if ok {
outC <- outMove
}
}
// Ignore any events that don't fit the mapping
}
}()
return &EventMgr{outC}
}