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@ -18,7 +18,7 @@ pub fn main() anyerror!void {
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try SetupECS(®); // run Entity Registry setup
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rl.setTargetFPS(60); // set max fps
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var delta: f32 = 0;
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var delta: f32 = 1;
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while (!rl.windowShouldClose()) {
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rl.beginDrawing();
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defer rl.endDrawing();
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@ -31,6 +31,9 @@ pub fn main() anyerror!void {
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const text = try std.fmt.allocPrintZ(Aloc.allocator(), "{d}", .{delta});
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rl.drawText(text, 500, 10, 11, rl.Color.white);
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delta = 1.0 / @as(f32, @floatFromInt(rl.getFPS()));
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if(delta > 10000 or delta < -10000){
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delta = 0;
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}
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}
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}
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pub fn SetupECS(reg: *ecs.Registry) !void {
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@ -49,18 +52,18 @@ pub fn DrawSystem(reg: *ecs.Registry) !void {
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rl.drawTextureEx(Sprite.image, Transform.pos, Transform.rot, 1, rl.Color.white);
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}
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}
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pub fn PhysicsSystem(reg: *ecs.Registry, deltaTime: f32) !void {
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pub fn PhysicsSystem(reg: *ecs.Registry, delta: f32) !void {
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var view = reg.view(.{EnSysTypes.Transform, EnSysTypes.Rigidbody, EnSysTypes.Gravity}, .{});
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var iter = view.entityIterator();
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while(iter.next())|entity|{
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var Rigidbody = view.get(EnSysTypes.Rigidbody, entity);
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var Transform = view.get(EnSysTypes.Transform, entity);
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const Rigidbody = view.get(EnSysTypes.Rigidbody, entity);
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const Transform = view.get(EnSysTypes.Transform, entity);
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const Gravity = view.getConst(EnSysTypes.Gravity, entity);
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Rigidbody.vel.x += Gravity.vel.x;
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Rigidbody.vel.y += Gravity.vel.y;
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Transform.pos.x += Rigidbody.vel.x / deltaTime;
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Transform.pos.y += Rigidbody.vel.y / deltaTime;
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Rigidbody.*.vel.x += Gravity.vel.x;
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Rigidbody.*.vel.y += Gravity.vel.y;
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Transform.pos.x += Rigidbody.vel.x * delta;
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Transform.pos.y += Rigidbody.vel.y * delta;
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}
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}
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