use ecs.IsGameObject instead of cast

1 files changed, 13 insertions, 1 deletions

diff --git a/objs/cursor.go b/objs/cursor.go
index b1fdca3..dd09a8b 100644
--- a/objs/cursor.go
+++ b/objs/cursor.go
@@ -12,12 +12,24 @@ type Cursor struct {
 
 func (c *Cursor) Render(renderer *sdl.Renderer) {
 	renderer.SetDrawColor(255, 0, 0, 255)
-	renderer.RenderPoint(c.Position.X, c.Position.Y)
+	r := &sdl.FRect{
+		X: c.Position.X - 5,
+		Y: c.Position.Y - 5,
+		W: 10,
+		H: 10,
+	}
+	renderer.RenderRect(r)
 }
 
 func (c *Cursor) Process(ev input.Event) {
 	c.Position.X += ev.Dx
 	c.Position.Y += ev.Dy
+	if c.Position.X < 0 {
+		c.Position.X = 0
+	}
+	if c.Position.Y < 0 {
+		c.Position.Y = 0
+	}
 }
 
 func (c *Cursor) GO() *ecs.GameObject {