xlib_playground

commit d97747aff8b014fc43501ad4923228c8848634fa
parent 4183d6fc6b496a0c056f65e0ebf1d5c67c8cf903
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Mon, 19 Dec 2022 08:26:00 +0900

add previous position

Diffstat:
M
main.c
 | 
12
++++++++----
M
obj.h
 | 
4
++++

2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/main.c b/main.c
@@ -313,10 +313,14 @@ handle_collision(void)
 			square->py < block->py + block->height){
 		if (block->px < square->px + square->width && 
 				square->px < block->px + block->width){
-			if (square->vx > 0)
-				block->px = square->px + square->width;
-			else
-				block->px = square->px - block->width;
+			if (square->ppx + square->width <= block->ppx + block->width/2){
+				obj_move(block, square->px + square->width, block->py);
+				printf("hello\n");
+			}
+			else if (block->ppx <= square->ppx - block->width/2){
+				obj_move(block, square->px - block->width, block->py);
+				printf("world\n");
+			}
 		}
 	}
 }
diff --git a/obj.h b/obj.h
@@ -37,6 +37,8 @@ Obj
 void
 obj_move(Obj *obj, float px, float py)
 {
+	obj->ppx = obj->px;
+	obj->ppy = obj->py;
 	obj->px = px;
 	obj->py = py;
 }
@@ -44,6 +46,8 @@ obj_move(Obj *obj, float px, float py)
 void
 obj_next_tick(Obj *obj, float dt)
 {
+	obj->ppx = obj->px;
+	obj->ppy = obj->py;
 	obj->vx += obj->ax * dt;
 	obj->vy += obj->ay * dt;
 	obj->px += obj->vx * dt;