Texture animations in editor

source/engine/timer.c

@@ -1,28 +1,83 @@
 #include "timer.h"
 #include <GLFW/glfw3.h>
 #include <stdlib.h>
+#include "vec.h"
 
 static double time;
 
+struct vec timers;
+
 void timer_init() {
     time = glfwGetTime();
+    timers = vec_init(sizeof(struct timer), 10);
 }
 
-struct timer *timer_make(int interval, void *(*callback)(void *param), void *param) {
-    struct timer *new = malloc(sizeof(*new));
-    new->fire_time = time + interval;
+void check_timer(struct timer *t)
+{
+    if (!t->on)
+        return;
 
-    return new;
+    if (time >= t->fire_time) {
+        t->cb(t->data);
+
+        if (t->repeat) {
+            t->fire_time = time + t->interval;
+            return;
+        }
+
+        t->on = 0;
+        return;
+    }
+}
+
+void timer_update(double s) {
+    time = s;
+
+    vec_walk(&timers, check_timer);
+}
+
+struct timer *timer_make(double interval, void (*callback)(void *param), void *param) {
+    struct timer *new = calloc(sizeof(*new),1);
+
+    new->remain_time = interval;
+    new->interval = interval;
+    new->cb = callback;
+    new->data = param;
+    new->repeat = 1;
+
+    timer_start(new);
+
+    struct timer *nn = vec_add(&timers, new);
+    free(new);
+
+    nn->timerid = timers.len-1;
+
+    return nn;
 }
 
 void timer_pause(struct timer *t) {
+    t->on = 0;
 
+    t->remain_time = t->fire_time - time;
+}
+
+void timer_stop(struct timer *t) {
+    t->on = 0;
+    t->remain_time = t->interval;
 }
 
 void timer_start(struct timer *t) {
-
+    t->on = 1;
+    t->fire_time = time + t->remain_time;
 }
 
 void timer_remove(struct timer *t) {
-    free(t);
-}
+    vec_delete(&timers, t->timerid);
+}
+
+void timer_settime(struct timer *t, double interval) {
+    double elapsed = time - (t->fire_time - t->interval);
+    t->interval = interval;
+    t->remain_time = time + t->interval - elapsed;
+}
+