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comment tweaks

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This commit is contained in:
Josh Deprez 2021-08-12 21:11:32 +10:00
parent 6cf9904403
commit 0b13586519
1 changed files with 2 additions and 2 deletions
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4
engine/camera.go
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@ -31,7 +31,7 @@ func (c *Camera) Draw(screen *ebiten.Image, opts ebiten.DrawImageOptions) {
zoom = c.zoomBound zoom = c.zoomBound
} }
// If the configured centre still puts the camera out of bounds, move it. // If the configured centre puts the camera out of bounds, move it.
centre := c.Centre centre := c.Centre
// Camera frame currently Rectangle{ centre ± (screen/(2*zoom)) }. // Camera frame currently Rectangle{ centre ± (screen/(2*zoom)) }.
sw2, sh2 := float64(c.game.ScreenWidth/2), float64(c.game.ScreenHeight/2) sw2, sh2 := float64(c.game.ScreenWidth/2), float64(c.game.ScreenHeight/2)
@ -50,7 +50,7 @@ func (c *Camera) Draw(screen *ebiten.Image, opts ebiten.DrawImageOptions) {
} }
// Apply camera controls to geom. // Apply camera controls to geom.
// 1. Move c.Centre to the origin // 1. Move centre to the origin
opts.GeoM.Translate(-float64(centre.X), -float64(centre.Y)) opts.GeoM.Translate(-float64(centre.X), -float64(centre.Y))
// 2. Zoom and rotate // 2. Zoom and rotate
opts.GeoM.Scale(zoom, zoom) opts.GeoM.Scale(zoom, zoom)