ShuriZma
/
flycast
mirror of https://github.com/flyinghead/flycast.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

lightgun: wiggle the reported lightgun position in a 2x2 square 

Fixes claychal not registering shots in menus.
This commit is contained in:
Flyinghead 2024-12-11 10:41:53 +01:00
parent bb1b1059d4
commit 67eee05c14
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
core/hw/pvr/spg.cpp
View File

@ -235,7 +235,7 @@ static int spg_line_sched(int tag, int cycles, int jitter, void *arg)
void read_lightgun_position(int x, int y)
{
static u8 flip;
static u32 flip;
maple_int_pending = true;
if (y < 0 || y >= 480 || x < 0 || x >= 640)
{
@ -245,9 +245,11 @@ void read_lightgun_position(int x, int y)
else
{
lightgun_line = y / (SPG_CONTROL.interlace ? 2 : 1) + SPG_VBLANK_INT.vblank_out_interrupt_line_number;
// For some reason returning the same position twice makes it register off screen
lightgun_hpos = (x + 286) ^ flip;
flip ^= 1;
// For some reason returning the same position twice makes it register off screen.
// Atomiswave Clay Challenge wants more wiggle than others for shots to register.
lightgun_line ^= (flip >> 1) & 1;
lightgun_hpos = (x + 286) ^ (flip & 1);
flip++;
}
}