Make RightTriangleLayer updateable

src/c/main.c

@@ -54,11 +54,12 @@ static GBitmap *s_clock_bmp;
 static GBitmap *s_check_bmp;
 
 // global vars
+static WakeupReason s_alarm_reason;
 static GColor s_setter_highlight_color;
 static uint8_t s_highlight_pos = 0;
 static bool s_skip_current_day = false;
 //// alarm
-static WakeupReason s_alarm_reason;
+static uint8_t s_demotion_promotion_clocks[2];
 static uint8_t s_solution_indices[3];
 static uint8_t s_selected_indices[3] = {9, 9, 9};
 static uint8_t s_awareness_countdown_int = 0;

src/c/triangles.c

@@ -37,14 +37,7 @@ static void right_triangle_layer_update_proc(Layer *layer, GContext *ctx) {
 	graphics_draw_circle(ctx, GPoint(tri->theta_angle_is_left ? start_x : end_x, base_y), 5);
 }
 
-RightTriangleLayer *right_triangle_layer_create(GRect frame, GColor color) {
-	RightTriangleLayer *tri = malloc(sizeof(RightTriangleLayer));
-	if (!tri)
-		return NULL;
-
-	// set color
-	tri->color = color;
-
+static void right_triangle_layer_generate_properties(RightTriangleLayer *tri, GRect frame) {
 	// determine angles
 	tri->angle_A = 90; // right angle at apex
 	tri->theta_angle_is_left = rand() % 2;
@@ -66,6 +59,18 @@ RightTriangleLayer *right_triangle_layer_create(GRect frame, GColor color) {
 		tri->side_b = (uint16_t)(((uint32_t)sin_B * tri->side_a) / TRIG_MAX_RATIO);
 		tri->side_c = (uint16_t)(((uint32_t)sin_C * tri->side_a) / TRIG_MAX_RATIO);
 	} while (tri->side_a == tri->side_b || tri->side_a == tri->side_c || tri->side_b == tri->side_c);
+}
+
+RightTriangleLayer *right_triangle_layer_create(GRect frame, GColor color) {
+	RightTriangleLayer *tri = malloc(sizeof(RightTriangleLayer));
+	if (!tri)
+		return NULL;
+
+	// set color
+	tri->color = color;
+
+	// generate this triangle's angles and side lengths
+	right_triangle_layer_generate_properties(tri, frame);
 
 	// create layer with room for a pointer-sized data slot & store the RightTriangleLayer* there
 	tri->layer = layer_create_with_data(frame, sizeof(RightTriangleLayer *));
@@ -75,6 +80,14 @@ RightTriangleLayer *right_triangle_layer_create(GRect frame, GColor color) {
 	return tri;
 }
 
+void right_triangle_layer_regen(RightTriangleLayer *tri) {
+	if (!tri || !tri->layer)
+		return;
+
+	right_triangle_layer_generate_properties(tri, layer_get_bounds(tri->layer));
+	layer_mark_dirty(tri->layer);
+}
+
 void right_triangle_layer_destroy(RightTriangleLayer *tri) {
 	if (!tri)
 		return;

src/c/triangles.h

@@ -20,4 +20,5 @@ typedef struct {
 } __attribute__((__packed__)) RightTriangleLayer;
 
 RightTriangleLayer *right_triangle_layer_create(GRect frame, GColor color);
+void right_triangle_layer_regen(RightTriangleLayer *tri);
 void right_triangle_layer_destroy(RightTriangleLayer *tri);