1 files changed, 78 insertions, 20 deletions

diff --git a/src/ray.c b/src/ray.c
index e0c0833..0e89f24 100644
--- a/src/ray.c
+++ b/src/ray.c
@@ -17,24 +17,30 @@
 #include "config.h"
 
 #include <raylib.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "disp.h"
 
 #define DEFAULT_HEIGHT 200
-#define DEFAULT_WIDTH 16*DEFAULT_HEIGHT/9
+#define DEFAULT_WIDTH (DEFAULT_HEIGHT*16/9)
 
 #define MAX_FONTSIZE 100
 
 struct state {
-	int input;
 	int x;
 	int y;
+	int input;
+	bool right;
+	int ms;
 };
 
-static struct state *current_state = NULL;
+#define STATE_COUNT 16
+static struct state states[STATE_COUNT] = {0};
+static int current_state = 0;
 
 void
 init(void)
@@ -61,7 +67,7 @@ window\n");
 	ClearBackground(RAYWHITE);
 	EndDrawing();
 
-	current_state = calloc(1, sizeof(*current_state));
+	current_state = 0;
 
 	TraceLog(LOG_INFO, "window successfully initialized");
 }
@@ -83,7 +89,7 @@ draw_calc(void)
 	int txt_width;
 	int font_size;
 
-	sprintf(txt, "%d + %d", current_state->x, current_state->y);
+	sprintf(txt, "%d + %d", states[current_state].x, states[current_state].y);
 
 	win_width = GetScreenWidth();
 	win_height = GetScreenHeight();
@@ -109,14 +115,14 @@ draw_calc(void)
 		 win_height/6, font_size, GRAY);
 
 	TraceLog(LOG_INFO, "calulation %d + %d successfully drawn",
-		 current_state->x, current_state->y);
+		 states[current_state].x, states[current_state].y);
 }
 
 void
 display_calc(int x, int y)
 {
-	current_state->x = x;
-	current_state->y = y;
+	states[current_state].x = x;
+	states[current_state].y = y;
 	BeginDrawing();
 	ClearBackground(RAYWHITE);
 	draw_calc();
@@ -131,7 +137,7 @@ draw_input(void)
 	int txt_width;
 	int font_size;
 
-	sprintf(txt, "%d", current_state->input);
+	sprintf(txt, "%d", states[current_state].input);
 
 	win_width = GetScreenWidth();
 	win_height = GetScreenHeight();
@@ -153,20 +159,64 @@ draw_input(void)
 }
 
 static void
+draw_res(void)
+{
+	char txt[64] = {0};
+	char *suffix;
+	Color col;
+	int win_width, win_height;
+	int txt_width;
+	int font_size;
+
+	win_width = GetScreenWidth();
+	win_height = GetScreenHeight();
+
+	for (int i = 0; i < STATE_COUNT; i++)
+	{
+		j = (current_state + i)%STATE_COUNT;
+		
+		if (states[j].ms == 0)
+			break;
+
+		if (states[j].right)
+		{
+			suffix = "RIGHT";
+			col = GREEN;
+		}
+		else
+		{
+			suffix = "WRONG";
+			col = RED;
+		}   
+
+		sprintf(txt, "%d + %d = %d (%s) %dms",
+			states[j].x, states[j].y,
+			states[j].input,
+			suffix, states[j].ms);
+
+		font_size = min(win_height/8, MAX_FONTSIZE/2);
+		txt_width = MeasureText(txt, font_size);
+		/* TODO: draw every results */
+		DrawText(txt, win_width-txt_width, 0, font_size, col);
+	}
+}
+
+static void
 redraw(void)
 {
 	BeginDrawing();
 	ClearBackground(RAYWHITE);
 	draw_calc();
 	draw_input();
+	draw_res();
 	EndDrawing();
 }
 
 static void
 add_input_digit(int digit)
 {
-	current_state->input *= 10;
-	current_state->input += digit;
+	states[current_state].input *= 10;
+	states[current_state].input += digit;
 	redraw();
 }
 
@@ -177,7 +227,7 @@ check_digit(int digit)
 	{
 		add_input_digit(digit);
 		TraceLog(LOG_INFO, "digit %d added to input", digit);
-		TraceLog(LOG_INFO, "input is now %d", current_state->input);
+		TraceLog(LOG_INFO, "input is now %d", states[current_state].input);
 	}
 }
 
@@ -192,7 +242,7 @@ int
 read_input(void)
 {
 	TraceLog(LOG_INFO, "waiting for user input");
-	current_state->input = 0;
+	states[current_state].input = 0;
 
 	while (!WindowShouldClose())
 	{
@@ -201,14 +251,15 @@ read_input(void)
 		if (IsWindowResized())
 			redraw();
 		if (IsKeyPressed(KEY_ENTER))
-			return current_state->input;
+			return states[current_state].input;
 		if (IsKeyPressed(KEY_Q) || IsKeyPressed(KEY_A))
 			return DISP_QUIT;
 		if (IsKeyPressed(KEY_R) || IsKeyPressed(KEY_G))
 			return DISP_RELOAD;
 		if (IsKeyPressed(KEY_BACKSPACE))
 		{
-			current_state->input = current_state->input / 10;
+			states[current_state].input =
+				states[current_state].input / 10;
 			redraw();
 		}
 		check_digits();
@@ -218,15 +269,16 @@ read_input(void)
 }
 
 void
-display_res(bool, int)
+display_res(bool right, int ms)
 {
-	/* TODO: display results */
+	states[current_state].right = right;
+	states[current_state].ms = ms;
+	redraw();
 }
 
 void
 destroy(void)
 {
-	free(current_state);
 	CloseWindow();
 }
 
@@ -234,14 +286,20 @@ destroy(void)
 void *
 pre_reload(void)
 {
+	char *data = malloc(sizeof(states) + sizeof(current_state));
+	memcpy(data, &states, sizeof(states));
+	memcpy(data + sizeof(states), &current_state, sizeof(current_state));
 	TraceLog(LOG_INFO, "pre-reload actions done");
-	return current_state;
+	return data;
 }
 
 void
 post_reload(void *state)
 {
-	current_state = state;
+	char *data = state;
+	current_state = *(data + sizeof(states));
+	memcpy(&states, data, sizeof(states));
+	free(data);
 	TraceLog(LOG_INFO, "post-reload actions done");
 }
 #endif