From ed4b506f529423433c0661ec968a67c1e467b3a2 Mon Sep 17 00:00:00 2001
From: nemo <n3m0o7@hotmail.com>
Date: Fri, 15 Nov 2024 14:08:58 +0100
Subject: [PATCH] reverse penger

---
 app.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app.c b/app.c
index 7daf825..838656e 100644
--- a/app.c
+++ b/app.c
@@ -6,6 +6,7 @@
 #define BLUE 0xffff0000
 #define BLACK 0xff000000
 
+#define EPSILON 0.000001f
 #define GRAVITY 9
 
 const unsigned int width = 800;
@@ -170,10 +171,12 @@ void draw(float dt)
     if (keys[ARROW_RIGHT]) {
         penger_pos.x += speed;
         if (velocity.x < 0) velocity.x *= -1;
+        else if (velocity.x >= -EPSILON) velocity.x = 1;
     }
     if (keys[ARROW_LEFT]) {
         penger_pos.x -= speed;
         if (velocity.x > 0) velocity.x *= -1;
+        else if (velocity.x <= EPSILON) velocity.x = -1;
     }
     if (keys[ARROW_DOWN])
         penger_pos.y += speed;
@@ -189,7 +192,10 @@ void draw(float dt)
     // dessine le penger sur le canva
     for (int y = 0; y < pengers_height[id]; y++) {
         for (int i = 0; i < pengers_width[id]; i++) {
-            if (pengers_img[id][y*pengers_width[id] + i] <= 0x00FFFFFF) // pixel transparant
+            int i_for_reverse_pixel_rendering_it_s_craazy = i;
+            if (velocity.x < EPSILON)
+                i_for_reverse_pixel_rendering_it_s_craazy = pengers_width[id]-i-1;
+            if (pengers_img[id][y*pengers_width[id] + i_for_reverse_pixel_rendering_it_s_craazy] <= 0x00FFFFFF) // pixel transparant
                 continue;
             for (int s1 = 0; s1 < scale; s1++) {
                 for (int s2 = 0; s2 < scale; s2++) {
@@ -197,7 +203,7 @@ void draw(float dt)
                     int idx_y = penger_origin.y + y*scale+s2;
                     if (idx_x < 0 || idx_x >= width || idx_y < 0 || idx_y >= height)
                         continue;
-                    BUFFER[idx_y*width + idx_x] = pengers_img[id][y*pengers_width[id] + i];
+                    BUFFER[idx_y*width + idx_x] = pengers_img[id][y*pengers_width[id] + i_for_reverse_pixel_rendering_it_s_craazy];
                 }
             }
         }