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174 lines
3.9 KiB
C
174 lines
3.9 KiB
C
/************************************************************************/
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/* KEGS: Apple //gs Emulator */
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/* Copyright 2002 by Kent Dickey */
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/* */
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/* This code is covered by the GNU GPL */
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/* */
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/* The KEGS web page is kegs.sourceforge.net */
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/* You may contact the author at: kadickey@alumni.princeton.edu */
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/************************************************************************/
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const char rcsid_paddles_c[] = "@(#)$KmKId: paddles.c,v 1.14 2004-10-19 14:52:36-04 kentd Exp $";
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#include "defc.h"
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extern int g_mouse_raw_x; /* from adb.c */
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extern int g_mouse_raw_y;
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double g_paddle_trig_dcycs = 0.0;
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int g_swap_paddles = 0;
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int g_invert_paddles = 0;
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int g_joystick_scale_factor_x = 0x100;
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int g_joystick_scale_factor_y = 0x100;
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int g_joystick_trim_amount_x = 0;
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int g_joystick_trim_amount_y = 0;
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int g_joystick_type = JOYSTICK_TYPE_NATIVE_1; // OG Trying to set native joystick as default
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int g_joystick_native_type1 = -1;
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int g_joystick_native_type2 = -1;
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int g_joystick_native_type = -1;
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extern int g_paddle_buttons;
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int g_paddle_val[4] = { 0, 0, 0, 0 };
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/* g_paddle_val[0]: Joystick X coord, [1]:Y coord */
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double g_paddle_dcycs[4] = { 0.0, 0.0, 0.0, 0.0 };
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/* g_paddle_dcycs are the dcycs the paddle goes to 0 */
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void
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paddle_trigger(double dcycs)
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{
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/* Called by read/write to $c070 */
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g_paddle_trig_dcycs = dcycs;
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/* Determine what all the paddle values are right now */
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switch(g_joystick_type) {
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case JOYSTICK_TYPE_KEYPAD: /* Keypad Joystick */
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paddle_trigger_keypad(dcycs);
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break;
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case JOYSTICK_TYPE_MOUSE: /* Mouse Joystick */
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paddle_trigger_mouse(dcycs);
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break;
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case JOYSTICK_TYPE_NONE: /* Mouse Joystick */
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paddle_trigger_mouse(dcycs);
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break;
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default:
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joystick_update(dcycs);
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}
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}
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void
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paddle_trigger_mouse(double dcycs)
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{
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int val_x, val_y;
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int mouse_x, mouse_y;
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val_x = 0;
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mouse_x = g_mouse_raw_x;
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mouse_y = g_mouse_raw_y;
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/* mous_phys_x is 0->560, convert that to -32768 to + 32767 cyc */
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/* So subtract 280 then mult by 117 */
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val_x = (mouse_x - 280) * 117;
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/* mous_phys_y is 0->384, convert that to -32768 to + 32767 cyc */
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/* so subtract 192 then mult by 180 to overscale it a bit */
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val_y = (mouse_y - 192) * 180;
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g_paddle_val[0] = val_x;
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g_paddle_val[1] = val_y;
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g_paddle_val[2] = 32767;
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g_paddle_val[3] = 32767;
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g_paddle_buttons |= 0xc;
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paddle_update_trigger_dcycs(dcycs);
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}
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void
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paddle_trigger_keypad(double dcycs)
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{
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int get_y;
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int val_x, val_y;
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val_x = adb_get_keypad_xy(get_y=0);
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val_y = adb_get_keypad_xy(get_y=1);
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/* val_x and val_y are already scale -32768 to +32768 */
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g_paddle_val[0] = val_x;
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g_paddle_val[1] = val_y;
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g_paddle_val[2] = 32767;
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g_paddle_val[3] = 32767;
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g_paddle_buttons |= 0xc;
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paddle_update_trigger_dcycs(dcycs);
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}
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void
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paddle_update_trigger_dcycs(double dcycs)
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{
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double trig_dcycs;
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int val;
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int paddle_num;
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int scale, trim;
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int i;
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for(i = 0; i < 4; i++) {
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paddle_num = i;
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if(g_swap_paddles) {
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paddle_num = i ^ 1;
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}
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val = g_paddle_val[paddle_num];
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if(g_invert_paddles) {
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val = -val;
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}
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/* convert -32768 to +32768 into 0->2816.0 cycles (the */
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/* paddle delay const) */
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/* First multiply by the scale factor to adjust range */
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if(paddle_num & 1) {
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scale = g_joystick_scale_factor_y;
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trim = g_joystick_trim_amount_y;
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} else {
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scale = g_joystick_scale_factor_x;
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trim = g_joystick_trim_amount_x;
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}
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#if 0
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if(i == 0) {
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printf("val was %04x(%d) * scale %03x = %d\n",
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val, val, scale, (val*scale)>>16);
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}
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#endif
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val = val * scale >> 16;
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/* Val is now from -128 to + 128 since scale is */
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/* 256=1.0, 128 = 0.5 */
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val = val + 128 + trim;
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if(val >= 255) {
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val = 280; /* increase range */
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}
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trig_dcycs = dcycs + (val * 11.04);
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g_paddle_dcycs[i] = trig_dcycs;
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}
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}
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int
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read_paddles(double dcycs, int paddle)
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{
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double trig_dcycs;
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trig_dcycs = g_paddle_dcycs[paddle & 3];
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if(dcycs < trig_dcycs) {
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return 0x80;
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} else {
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return 0x00;
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}
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}
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void
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paddle_update_buttons()
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{
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joystick_update_buttons();
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}
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