93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
/**
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* Copyright (c) 2017 rxi
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MIT license. See LICENSE for details.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <dos.h>
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#include "luaobj.h"
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#include "mouse.h"
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#include "event.h"
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int mouse_inited;
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int mouse_x, mouse_y;
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int mouse_lastX, mouse_lastY;
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int mouse_buttonStates[MOUSE_BUTTON_MAX];
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void mouse_init(void) {
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union REGS regs = {};
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int86(0x33, ®s, ®s);
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mouse_inited = regs.x.ax ? 1 : 0;
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}
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void mouse_update(void) {
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if (!mouse_inited) {
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return;
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}
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/* Update mouse position */
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union REGS regs = {};
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regs.x.ax = 3;
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int86(0x33, ®s, ®s);
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mouse_x = regs.x.cx >> 1;
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mouse_y = regs.x.dx;
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/* Do moved event if mouse moved */
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if (mouse_x != mouse_lastX || mouse_y != mouse_lastY) {
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event_t e;
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e.type = EVENT_MOUSE_MOVED;
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e.mouse.x = mouse_x;
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e.mouse.y = mouse_y;
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e.mouse.dx = mouse_x - mouse_lastX;
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e.mouse.dy = mouse_y - mouse_lastY;
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event_push(&e);
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}
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/* Update last position */
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mouse_lastX = mouse_x;
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mouse_lastY = mouse_y;
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/* Update button states and push pressed/released events */
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int i, t;
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for (i = 0; i < MOUSE_BUTTON_MAX; i++) {
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for (t = 0; t < 2; t++) {
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memset(®s, 0, sizeof(regs));
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regs.x.ax = 5 + t;
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regs.x.bx = i;
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int86(0x33, ®s, ®s);
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if (regs.x.bx) {
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/* Push event */
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event_t e;
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e.type = t == 0 ? EVENT_MOUSE_PRESSED : EVENT_MOUSE_RELEASED;
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e.mouse.button = i;
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e.mouse.x = mouse_x;
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e.mouse.y = mouse_y;
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event_push(&e);
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/* Set state */
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mouse_buttonStates[i] = t == 0 ? 1 : 0;
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}
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}
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}
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}
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int mouse_isDown(int button) {
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return mouse_buttonStates[button];
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}
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int mouse_getX(void) {
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return mouse_x;
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}
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int mouse_getY(void) {
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return mouse_y;
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}
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