sdofi

src/main.zig

@@ -38,20 +38,27 @@ const Particle = struct {
     velocity : pr.Vec = .{.a = .{.x=0,.y=0,.z=0}},
     acceleration : pr.Vec = .{.a = .{.x=0,.y=0,.z=0}},
     lifespan : u8 = 0,
+    spawm : u8 = 1,
     pub fn new(self:Self) void {
         _ = self;
     }
     pub fn update(self:*Self) void {
         self.velocity.add(self.acceleration);
         self.position.add(self.velocity);
+        if (self.position.a.y > screenHeight)
+        {
+            self.velocity.a.y *= -0.9;
+           // self.acceleration.a.y *= -0.5;
+        }
 
         if (self.lifespan > 0) {
             self.lifespan -= 1;
-        } else {
+        } else 
+        {
             const xrnr = randMinMaxFloat(-1,1);
             const yrnr = randMinMaxFloat(-0.5,0.5);
 
-            self.lifespan = rand.intRangeAtMost(u8,1,100);
+            self.lifespan = rand.intRangeAtMost(u8,75,255);
             self.acceleration.a.x = xrnr;
             self.acceleration.a.y = yrnr;
             self.position.a.x = @floatFromInt(rl.getMouseX()-screenWidth/2);
@@ -67,12 +74,17 @@ const Particle = struct {
         self.velocity.a.y += val;
     }
 };
+fn ItoF(x:i32) f32
+{
+    return @as(f32,@floatFromInt(x));
+}
 
 pub fn main() anyerror!void {
     // Initialization
     //--------------------------------------------------------------------------------------
 
     const rect2 = rl.Rectangle{ .x = @as(f32, @floatFromInt(10)), .y = @as(f32, @floatFromInt(10)), .width = @as(f32, @floatFromInt(300)), .height = @as(f32, @floatFromInt(100)) };
+    const rect3 = rl.Rectangle{ .x = @as(f32, @floatFromInt(200)), .y = @as(f32, @floatFromInt(150)), .width = @as(f32, @floatFromInt(600)), .height = @as(f32, @floatFromInt(10)) };
     var msg_res : i32=-1;
     var state : i32=-1;
     
@@ -85,8 +97,9 @@ pub fn main() anyerror!void {
 
     var posx : i32 = 0;
     var posy : i32 = 0;
+    var value : f32 = 0;
 
-    const p1 = try allocator.alloc(Particle,5000);
+    const p1 = try allocator.alloc(Particle,500000);
     for (p1) |*p| {
         xrnr = rand.float(f32);
         yrnr = rand.float(f32);
@@ -126,20 +139,28 @@ pub fn main() anyerror!void {
                     else =>{},
             }
         }
-        for (p1) |*p| {
-            p.update();
-            p.applyGravity(2);
-            if(p.position.a.x >= -(screenWidth/2)){
-                posx = @intFromFloat(screenWidth / 2 + p.position.a.x);
-            } else {
-                posx  = 0;
+        _ = rg.guiSlider(rect3,"0","500000",&value,ItoF(0),ItoF(500000));
+        for (0..,p1) |i,*p| {
+            if(i<@as(usize,@intFromFloat(value)))
+            {
+                if(rl.isMouseButtonPressed(rl.MouseButton.mouse_button_left))
+                {
+                    p.spawm = 1;
+                }
+                    p.update();
+                    p.applyGravity(2);
+                    if(p.position.a.x >= -(screenWidth/2)){
+                        posx = @intFromFloat(screenWidth / 2 + p.position.a.x);
+                    } else {
+                        posx  = 0;
+                    }
+                    if(p.position.a.y >= -(screenHeight/2)){
+                        posy = @intFromFloat(screenHeight / 2 + p.position.a.y);
+                    } else {
+                        posy = 0;
+                    }
+                        rl.drawRectangle(posx,posy,2,2,rl.Color{.r=p.position.a.color.r,.g=p.position.a.color.g,.b=p.position.a.color.b,.a=255});
             }
-            if(p.position.a.y >= -(screenHeight/2)){
-                posy = @intFromFloat(screenHeight / 2 + p.position.a.y);
-            } else {
-                posy = 0;
-            }
-            rl.drawRectangle(posx,posy,5,5,rl.Color{.r=p.position.a.color.r,.g=p.position.a.color.g,.b=p.position.a.color.b,.a=255});
         }