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fix partial starfield

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Sonic Dreamcaster
2026-01-03 00:32:19 -03:00
parent 23d07e9949
commit b1e544da57
1 changed files with 36 additions and 16 deletions
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src/engine/fox_bg.c
+36 -16
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@@ -372,29 +372,31 @@ void Background_DrawPartialStarfield(s32 yMin, s32 yMax) { // Stars that are in
f32* sp5C;
u32* sp58;
yMin += 245;
yMax += 245;
// Get current screen dimensions
float currentScreenWidth = gCurrentScreenWidth;
float currentScreenHeight = gCurrentScreenHeight;
float starfieldWidth = 1.0f * currentScreenWidth;
float starfieldHeight = 1.0f * currentScreenHeight;
// Graphics pipeline setup
gDPPipeSync(gMasterDisp++);
gDPSetCycleType(gMasterDisp++, G_CYC_FILL);
gDPSetCombineMode(gMasterDisp++, G_CC_SHADE, G_CC_SHADE);
gDPSetRenderMode(gMasterDisp++, G_RM_OPA_SURF, G_RM_OPA_SURF2);
// Set projection to orthographic before drawing stars
Lib_InitOrtho(&gMasterDisp);
if (gStarfieldX >= 1.5f * currentScreenWidth) {
gStarfieldX -= 1.5f * currentScreenWidth;
gSPDisplayList(gMasterDisp++, starSetupDL);
if (gStarfieldX >= starfieldWidth) {
gStarfieldX -= starfieldWidth;
}
if (gStarfieldY >= 1.5f * currentScreenHeight) {
gStarfieldY -= 1.5f * currentScreenHeight;
if (gStarfieldY >= starfieldHeight) {
gStarfieldY -= starfieldHeight;
}
if (gStarfieldX < 0.0f) {
gStarfieldX += 1.5f * currentScreenWidth;
gStarfieldX += starfieldWidth;
}
if (gStarfieldY < 0.0f) {
gStarfieldY += 1.5f * currentScreenHeight;
gStarfieldY += starfieldHeight;
}
spf68 = gStarfieldX;
@@ -405,19 +407,33 @@ void Background_DrawPartialStarfield(s32 yMin, s32 yMax) { // Stars that are in
sp58 = gStarFillColors;
var_s2 = 500;
var_s2 = var_s2 * 3; // Adjust multiplier as needed
cos = __cosf(gStarfieldRoll);
sin = __sinf(gStarfieldRoll);
for (i = 0; i < var_s2; i++, sp5C++, sp60++, sp58++) {
bx = *sp60 + spf68;
by = *sp5C + spf64;
if (bx >= starfieldWidth * 1.25f) {
bx -= 1.5f * starfieldWidth;
// Wrapping logic for individual stars along X-axis
if (bx >= starfieldWidth) {
bx -= starfieldWidth;
}
if (bx < 0.0f) {
bx += starfieldWidth;
}
// Wrapping logic for individual stars along Y-axis
if (by >= starfieldHeight) {
by -= starfieldHeight;
}
if (by < 0.0f) {
by += starfieldHeight;
}
// Center the positions
bx -= starfieldWidth / 2.0f;
if (by >= starfieldHeight * 1.25f) {
by -= 1.5f * starfieldHeight;
}
by -= starfieldHeight / 2.0f;
// Apply rotation
@@ -454,6 +470,10 @@ void Background_DrawPartialStarfield(s32 yMin, s32 yMax) { // Stars that are in
FrameInterpolation_RecordCloseChild();
}
}
// Restore original perspective after drawing stars
Lib_InitPerspective(&gMasterDisp);
// Finalize rendering state
gDPPipeSync(gMasterDisp++);
gDPSetColorDither(gMasterDisp++, G_CD_MAGICSQ);
}