Flipping sprites and the offset property

[Xtyfe]

I have some fist sprites that I want to flip to make right handed, however the actor definition uses offsets to smooth it. I know I will have to change the offset values as well due to flipping but I'm not sure where to start.

Is there some sort fancy math I can do to work this out?

[Professor Pants]

I made a wad using TEXTURES which flips the original Doom pistol and fist on the Y axis. It might work right away. If not, adjust accordingly. (Not sure how the DECORATE offset works, only used it once.)

righthanded.wad

Also, here's the code:

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Code: Select all

//Fist

Sprite PUNGA0, 80, 41
{
Offset -173, -127
Patch PUNGB0, 0, 0 {FlipX}
}

Sprite PUNGB0, 80, 41
{
Offset -173, -127
Patch PUNGB0, 0, 0 {FlipX}
}

Sprite PUNGC0, 107, 52
{
Offset -161, -116
Patch PUNGC0, 0, 0 {FlipX}
}

Sprite PUNGD0, 147, 76
{
Offset -137, -92
Patch PUNGD0, 0, 0 {FlipX}
}

//Pistol

Sprite PISGA0, 57, 62
{
Offset -137, -106
Patch PISGA0, 0, 0 {FlipX}
}

Sprite PISGB0, 79, 82
{
Offset -137, -86
Patch PISGB0, 0, 0 {FlipX}
}

Sprite PISGC0, 66, 81
{
Offset -135, -87
Patch PISGC0, 0, 0 {FlipX}
}

Sprite PISGD0, 61, 81
{
Offset -134, -87
Patch PISGD0, 0, 0 {FlipX}
}

Sprite PISGE0, 78, 103
{
Offset -136, -65
Patch PISGE0, 0, 0 {FlipX}
}

Sprite PISFA0, 41, 38
{
Offset -139, -66
Patch PISFA0, 0, 0 {FlipX}
}

Oh, and here's a screenshot:

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Also, if you need to change the code at all, here's where I got all those numbers:

---

Code: Select all

FLIP Y

Sprite [NEW_SPRITE_NAME], [ORIGINAL_WIDTH], [ORIGINAL_HEIGHT]
{
Offset [ORIGINAL_X_OFFSET], [TWICE_THE_ORIGINAL_HEIGHT_MINUS_ORIGINAL_Y_OFFSET]
Patch [ORIGINAL_SPRITE_NAME], 0, 0 {FlipY}
}

FLIP X

Sprite [NEW_SPRITE_NAME], [ORIGINAL_WIDTH], [ORIGINAL_HEIGHT]
{
Offset [ORIGINAL_X_OFFSET*], [ORIGINAL_Y_OFFSET]
Patch [ORIGINAL_SPRITE_NAME], 0, 0 {FlipX}
}

*For HUD sprites, use this forumla:
320-(ORIGINAL_WIDTH_MINUS_ORIGINAL_X_OFFSET)

[jpalomo]

I'm not sure how offset (decorate) affects offset (textures). I think it only modifies the position based on the offset set by textures. If so, you will probably only need to modify the x values in decorate. The number to add depends on how large the sprites are. I don't know of any easy way to figure it out so you might have to experiment.