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Fix for Mametesters BugID #1455
This commit is contained in:
Patrick Lessard
parent
87a73f6f51
commit
e2825227e6
@ -394,22 +394,159 @@ READ16_MEMBER( segas18_state::lghost_custom_io_r )
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WRITE16_MEMBER( segas18_state::lghost_custom_io_w )
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{
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UINT8 pos_value_x, pos_value_y;
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switch (offset)
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{
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// Player 1, Y axis
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case 0x3010/2:
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m_lghost_value = 255 - ioport("GUNY1")->read();
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pos_value_x = ioport("GUNX1")->read();
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pos_value_y = 255 - ioport("GUNY1")->read();
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// Depending of the position on the X axis, we need to calculate the Y offset accordingly
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if (pos_value_x >= 50 && pos_value_x <= 99)
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{
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// Linear function (decreasing)
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if (pos_value_y >= 130 && pos_value_y <= 225)
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m_lghost_value = round(pos_value_y * 0.94 + 0.80);
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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else if (pos_value_x >= 100 && pos_value_x <= 199)
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{
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// Linear function (decreasing)
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if (pos_value_y >= 100 && pos_value_y <= 225)
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m_lghost_value = round(pos_value_y * 0.89 + 6.00);
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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else if (pos_value_x >= 200 && pos_value_x <= 249)
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{
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// Linear function (decreasing) #1
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if (pos_value_y >= 30 && pos_value_y <= 55)
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m_lghost_value = round(pos_value_y * 0.78 + 18.28);
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// Linear function (decreasing) #2
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else if (pos_value_y >= 100 && pos_value_y <= 205)
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m_lghost_value = round(pos_value_y * 0.70 + 28.00);
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// Linear function (decreasing) #2
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else if (pos_value_y >= 206 && pos_value_y <= 225)
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m_lghost_value = round(pos_value_y * 1.58 - 151.48);
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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// if crosshair is near the left edge, keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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break;
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// Player 1, X axis
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case 0x3012/2:
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m_lghost_value = ioport("GUNX1")->read();
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pos_value_x = ioport("GUNX1")->read();
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// Here, linear functions (increasing) are used
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// The line is divided in two parts to get more precise results
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// Linear function (increasing) #1
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if (pos_value_x >= 26 && pos_value_x <= 85)
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m_lghost_value = round(pos_value_x * 1.13 + 0.95);
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// Linear function (increasing) #2
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else if (pos_value_x >= 86 && pos_value_x <= 140)
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m_lghost_value = round(pos_value_x * 1.10 + 4.00);
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// Here, linear functions (decreasing) are used
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// The line is divided in two parts to get more precise results
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// Linear function (decreasing) #1
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else if (pos_value_x >= 141 && pos_value_x <= 190)
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m_lghost_value = round(pos_value_x * 1.02 + 11.20);
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// Linear function (decreasing) #2
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else if (pos_value_x >= 191 && pos_value_x <= 240)
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m_lghost_value = round(pos_value_x * 0.76 + 62.60);
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// if crosshair is near the edges, keep real value as no offset is needed
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else
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m_lghost_value = pos_value_x;
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break;
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// Player 2 and 3, Y axis
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case 0x3014/2:
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m_lghost_value = 255 - ioport(m_lghost_select ? "GUNY3" : "GUNY2")->read();
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// Player 3, Y axis
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if (m_lghost_select)
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{
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pos_value_x = ioport("GUNX3")->read();
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pos_value_y = 255 - ioport("GUNY3")->read();
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// Depending of the position on the X axis, we need to calculate the Y offset accordingly
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if (pos_value_x >= 128 && pos_value_x <= 255)
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{
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// Linear function (increasing)
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if (pos_value_y >= 30 && pos_value_y <= 125)
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m_lghost_value = round(pos_value_y * 1.01 + 11.82);
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// Linear function (decreasing)
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else if (pos_value_y >= 126 && pos_value_y <= 235)
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m_lghost_value = round(pos_value_y * 0.94 + 21.90);
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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else if (pos_value_x >= 17 && pos_value_x <= 127)
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{
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// Linear function (increasing)
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if (pos_value_y >= 40 && pos_value_y <= 145)
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m_lghost_value = round(pos_value_y * 0.82 + 31.80);
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// Linear function (decreasing)
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else if (pos_value_y >= 200 && pos_value_y <= 225)
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m_lghost_value = round(pos_value_y * 0.83 + 29.95);
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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// Keep real value as no offset is needed
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else
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m_lghost_value = pos_value_y;
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}
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// Player 2, Y axis. It doesn't need any offset adjustement.
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else
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m_lghost_value = 255 - ioport("GUNY2")->read();
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break;
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// Player 2 and 3, X axis
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case 0x3016/2:
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m_lghost_value = ioport(m_lghost_select ? "GUNX3" : "GUNX2")->read();
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// Player 3, X axis
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if (m_lghost_select)
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{
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pos_value_x = ioport("GUNX3")->read();
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// Right edge of screen, constant value
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if (pos_value_x >= 17 && pos_value_x <= 34)
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m_lghost_value = pos_value_x - 17;
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// Linear function (increasing)
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else if (pos_value_x >= 35 && pos_value_x <= 110)
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m_lghost_value = round(pos_value_x * 0.94 - 14.08);
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// Linear function (decreasing) #1
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else if (pos_value_x >= 111 && pos_value_x <= 225)
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m_lghost_value = round(pos_value_x * 1.15 - 35.65);
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// if crosshair is near the edges, keep real value as no offset is needed*/
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else
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m_lghost_value = pos_value_x;
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break;
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}
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// Player 2, X axis. It doesn't need any offset adjustement.
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else
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m_lghost_value = ioport("GUNX2")->read();
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break;
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case 0x3020/2:
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