From: Brendan Hansen <brendan.f.hansen@gmail.com>
Date: Tue, 1 Mar 2022 03:56:54 +0000 (-0600)
Subject: acceleration to the player
X-Git-Url: https://git.brendanfh.com/?a=commitdiff_plain;h=653b499cc4c8fff593b0305c7f4577ee1d3f5f49;p=bar-game.git

acceleration to the player
---

diff --git a/src/entity/components/movement.onyx b/src/entity/components/movement.onyx
index a1585a3..264ee51 100644
--- a/src/entity/components/movement.onyx
+++ b/src/entity/components/movement.onyx
@@ -24,15 +24,19 @@ MovementComponent :: struct {
     use component: Component;
     controls : Player_Controls;
     facing   := Facing.Up;
+    velocity: Vector2;
 
     update :: (movement: ^MovementComponent, use this: ^Entity, dt: f32) {
-        speed :: 128.0f;
-
-        delta: Vector2;
-        if is_key_down(movement.controls.left)  { delta.x -= speed * dt; movement.facing = .Left;  }
-        if is_key_down(movement.controls.right) { delta.x += speed * dt; movement.facing = .Right; }
-        if is_key_down(movement.controls.up)    { delta.y -= speed * dt; movement.facing = .Up;    }
-        if is_key_down(movement.controls.down)  { delta.y += speed * dt; movement.facing = .Down;  }
+        acc: Vector2;
+        if is_key_down(movement.controls.left)  { acc.x -= 1; movement.facing = .Left;  }
+        if is_key_down(movement.controls.right) { acc.x += 1; movement.facing = .Right; }
+        if is_key_down(movement.controls.up)    { acc.y -= 1; movement.facing = .Up;    }
+        if is_key_down(movement.controls.down)  { acc.y += 1; movement.facing = .Down;  }
+
+        speed :: 800.0f;
+        movement.velocity += acc * speed * dt;
+        delta := movement.velocity * dt + acc * 0.5 * dt * dt;
+        movement.velocity *= 0.9;
 
         dist := math.max(size.x, size.y) * 2;
         walls := scene->query_by_flags(.{pos.x - dist, pos.y - dist, dist * 2, dist * 2}, .Solid);