inverting-game/Control.c

#include "Control.h"
#include <GLFW/glfw3.h>

typedef struct Key {
    int key;
    int isDown;
    int downTime;
} Key;

static Key keys[GLFW_KEY_LAST + 2];

typedef struct MouseButton {
    int button;
    int isDown;
    int downTime;
    int fastClick;
} MouseButton;

static MouseButton buttons[GLFW_MOUSE_BUTTON_LAST + 1];

void controlInit() {
    for(int i = 0; i < GLFW_KEY_LAST + 2; i++) {
        keys[i].key = 0;
        keys[i].isDown = 0;
        keys[i].downTime = 0;
    }
    for(int i = 0; i < GLFW_MOUSE_BUTTON_LAST + 1; i++) {
        buttons[i].button = 0;
        buttons[i].isDown = 0;
        buttons[i].downTime = 0;
        buttons[i].fastClick = 0;
    }
}

void keyPress(int key) {
    keys[key + 1].isDown = 1;
}

void keyRelease(int key) {
    keys[key + 1].isDown = 0;
    keys[key + 1].downTime = 0;
}

void controlTick() {
    for(int i = 0; i < GLFW_KEY_LAST + 2; i++) {
        keys[i].downTime += keys[i].isDown;
    }
    for(int i = 0; i < GLFW_MOUSE_BUTTON_LAST + 1; i++) {
        buttons[i].downTime += buttons[i].isDown;
        buttons[i].fastClick--;
    }
}

int keyIsDown(int key) {
    return keys[key + 1].isDown;
}

int keyIsJustDown(int key) {
    return keys[key + 1].downTime == 1;
}

void mousePress(int button) {
    buttons[button].isDown = 1;
    buttons[button].fastClick = 2;
}

void mouseRelease(int button) {
    buttons[button].isDown = 0;
    buttons[button].downTime = 0;
}

int mouseIsDown(int button) {
    return buttons[button].isDown;
}

int mouseIsJustDown(int button) {
    return buttons[button].downTime == 1 || buttons[button].fastClick > 0;
}