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XEEN: Cleanup of sprite drawer 3

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This commit is contained in:
Paul Gilbert 2019-08-30 21:50:14 -07:00
parent 0f1722ebce
commit 9213920ac1
1 changed files with 4 additions and 4 deletions
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8
engines/xeen/sprites.cpp
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@ -28,6 +28,8 @@
#include "xeen/screen.h"
#include "xeen/sprites.h"
#include "graphics/palette.h"
namespace Xeen {
#define SCENE_CLIP_LEFT 8
@ -438,7 +440,7 @@ void SpriteDrawer1::drawPixel(byte *dest, byte pixel) {
/*------------------------------------------------------------------------*/
const uint16 DRAWER3_MASK[4] = { 0xF01, 0xF03, 0xF07, 0xF0F };
const uint16 DRAWER3_MASK[4] = { 1, 3, 7, 15 };
const uint16 DRAWER3_OFFSET[4] = { 1, 2, 4, 8 };
SpriteDrawer3::SpriteDrawer3(byte *data, size_t filesize, int index) : SpriteDrawer(data, filesize) {
@ -447,10 +449,8 @@ SpriteDrawer3::SpriteDrawer3(byte *data, size_t filesize, int index) : SpriteDra
}
void SpriteDrawer3::drawPixel(byte *dest, byte pixel) {
uint16 val = (int)*dest << 8 | pixel;
val = (val & _mask) - _offset;
byte level = (pixel & _mask) - _offset + (*dest & 0xf);
byte level = (val & 0xff) + (val >> 8);
if (level >= 0x80) {
*dest &= 0xf0;
} else if (level <= 0xf) {