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Josh Deprez 2021-08-31 15:18:21 +10:00
parent cfe850d0da
commit 05088fa18b
1 changed files with 3 additions and 2 deletions
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5
engine/iso.go
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@ -15,8 +15,9 @@ type IsoProjection struct {
// Project projects a 3D coordinate into 2D.
// If ZX = 0, x is unchanged; similarly for ZY and y.
// Otherwise, x becomes x + z/ZX and y becomes y + z/ZY.
// This is because there's little reason for an isometric projection in a game
// to exaggerate the Z position.
// Dividing Z is used because there's little reason for an isometric projection
// in a game to exaggerate the Z position, and integers are used to preserve
// "pixel perfect" calculation in case you are making the next Celeste.
func (π IsoProjection) Project(x, y, z int) (xp, yp int) {
xp, yp = x, y
if π.ZX != 0 {