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fixing bug where heading can be 0

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This commit is contained in:
Fraser Graham 2013-10-18 20:40:09 -07:00
parent e02c5f89fb
commit 2edc7c61af
1 changed files with 10 additions and 1 deletions
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9
player.go
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@ -95,13 +95,18 @@ func (p *player) nudge(g *game) {
// We may have been stopped before this and had no heading // We may have been stopped before this and had no heading
current_heading = p.Robot.MoveTo.Sub(p.Robot.Position).Normalize() current_heading = p.Robot.MoveTo.Sub(p.Robot.Position).Normalize()
} }
// Where do we WANT to be heading?
new_heading := p.Robot.MoveTo.Sub(p.Robot.Position).Normalize() new_heading := p.Robot.MoveTo.Sub(p.Robot.Position).Normalize()
// Is our direction change too much? Hard coding to 5 degrees/s for now // Is our direction change too much? Hard coding to 5 degrees/s for now
angle := v.Angle(current_heading, new_heading) * v.Rad2deg angle := v.Angle(current_heading, new_heading) * v.Rad2deg
dir := 1.0 dir := 1.0
if angle < 0 { if angle < 0 {
dir = -1.0 dir = -1.0
} }
// Max turn radius in this case is 100 degrees per second
if math.Abs(angle) > (100 * delta) { if math.Abs(angle) > (100 * delta) {
// New heading should be a little less, take current heading and // New heading should be a little less, take current heading and
// rotate by the max turn radius per frame. // rotate by the max turn radius per frame.
@ -120,7 +125,11 @@ func (p *player) nudge(g *game) {
p.Robot.Heading = v.Vector2d{X: 0, Y: 0} p.Robot.Heading = v.Vector2d{X: 0, Y: 0}
} else { } else {
p.Robot.Position = p.Robot.Position.Add(move_vector) p.Robot.Position = p.Robot.Position.Add(move_vector)
if new_heading.Mag() > 0 {
p.Robot.Heading = new_heading p.Robot.Heading = new_heading
} else {
log.Printf("Zero Heading %v", new_heading)
}
} }
} }