rpuzonas/flail-survivor
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make spinning easier

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This commit is contained in:
Rokas Puzonas 2024-02-11 03:23:19 +02:00
parent 7c73d5436d
commit 70256a1547
2 changed files with 110 additions and 83 deletions
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190
src/main-scene.zig
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@ -16,7 +16,7 @@ const Player = struct {
position: rl.Vector2,
velocity: rl.Vector2 = rl.Vector2.zero(),
acceleration: rl.Vector2 = rl.Vector2.zero(),
handDirection: rl.Vector2 = rl.Vector2{ .x = 1, .y = 0 }
handDirection: rl.Vector2 = rl.Vector2{ .x = 1, .y = 0 },
};
const Rope = struct {
@ -100,7 +100,9 @@ const Rope = struct {
const offset = offsets.get(i);
vel.* = vel.add(acc.scale(dt));
vel.* = vel.scale(1 - self.friction);
pos.* = pos.add(vel.scale(dt*10000));
const amplifier = @as(f32, @floatFromInt(i-1))/@as(f32, @floatFromInt(node_count-2));
pos.* = pos.add(vel.scale(dt*10000 + amplifier*5));
pos.* = pos.add(offset.scale(0.01));
}
}
@ -116,10 +118,12 @@ enemies: std.ArrayList(Enemy),
player: Player,
rope: Rope,
camera: rl.Camera2D,
const Self = @This();
pub fn init(allocator: Allocator) Self {
var playerPosition = rl.Vector2{ .x = 400, .y = 400 };
var playerPosition = rl.Vector2{ .x = 0, .y = 0 };
var ropeSize: f32 = 200;
var handPosition = playerPosition.add(rl.Vector2{ .x = handDistance, .y = 0});
@ -128,7 +132,8 @@ pub fn init(allocator: Allocator) Self {
.prng = std.rand.DefaultPrng.init(@bitCast(std.time.timestamp())),
.enemies = std.ArrayList(Enemy).init(allocator),
.player = .{ .position = playerPosition },
.rope = Rope.init(handPosition, handPosition.add(.{ .x = ropeSize, .y = 0.002 }), 10)
.rope = Rope.init(handPosition, handPosition.add(.{ .x = ropeSize, .y = 0.002 }), 10),
.camera = .{ .target = playerPosition }
};
}
@ -144,6 +149,14 @@ pub fn deinit(self: Self) void {
pub fn tick(self: *Self) !void {
rl.ClearBackground(rl.BLACK);
const screenWidth: f32 = @floatFromInt(rl.GetScreenWidth());
const screenHeight: f32 = @floatFromInt(rl.GetScreenHeight());
const mouseDelta = rl.GetMouseDelta();
self.camera.offset.x = screenWidth/2;
self.camera.offset.y = screenHeight/2;
self.camera.target = self.player.position;
const dt = rl.GetFrameTime();
var rng = self.prng.random();
var player = &self.player;
@ -156,7 +169,7 @@ pub fn tick(self: *Self) !void {
self.enemyTimer = 0.5 + rng.float(f32) * 2;
self.spawnedEnemiesCount += 1;
try enemies.append(Enemy{
.position = rl.Vector2.randomOnUnitCircle(rng).scale(100)
.position = rl.Vector2.randomOnUnitCircle(rng).scale(400)
});
}
@ -175,16 +188,16 @@ pub fn tick(self: *Self) !void {
moveDx += 1;
}
var handDx: f32 = 0;
var handDy: f32 = 0;
var handDx: f32 = mouseDelta.x;
var handDy: f32 = mouseDelta.y;
var gamepad: i32 = 0;
if (rl.IsGamepadAvailable(gamepad)) {
moveDx += rl.GetGamepadAxisMovement(gamepad, rl.GamepadAxis.GAMEPAD_AXIS_LEFT_X);
moveDy += rl.GetGamepadAxisMovement(gamepad, rl.GamepadAxis.GAMEPAD_AXIS_LEFT_Y);
moveDx += rl.GetGamepadAxisMovement(gamepad, .GAMEPAD_AXIS_LEFT_X);
moveDy += rl.GetGamepadAxisMovement(gamepad, .GAMEPAD_AXIS_LEFT_Y);
handDx = rl.GetGamepadAxisMovement(gamepad, rl.GamepadAxis.GAMEPAD_AXIS_RIGHT_X);
handDy = rl.GetGamepadAxisMovement(gamepad, rl.GamepadAxis.GAMEPAD_AXIS_RIGHT_Y);
handDx += rl.GetGamepadAxisMovement(gamepad, .GAMEPAD_AXIS_RIGHT_X);
handDy += rl.GetGamepadAxisMovement(gamepad, .GAMEPAD_AXIS_RIGHT_Y);
}
var moveDir = rl.Vector2{ .x = moveDx, .y = moveDy };
@ -221,86 +234,18 @@ pub fn tick(self: *Self) !void {
const directionToPlayer = toPlayer.normalize();
enemy.position = enemy.position.add(directionToPlayer.scale(enemySpeed * dt));
rl.DrawCircle(
@intFromFloat(enemy.position.x),
@intFromFloat(enemy.position.y),
enemySize,
rl.RED
);
}
const handPosition = player.position.add(player.handDirection.scale(handDistance));
const enemyCountText = try std.fmt.allocPrintZ(allocator, "{d}", .{self.spawnedEnemiesCount});
defer allocator.free(enemyCountText);
rl.DrawText(enemyCountText, 10, 10, 24, rl.RED);
const killCountText = try std.fmt.allocPrintZ(allocator, "{d}", .{self.killCount});
defer allocator.free(killCountText);
rl.DrawText(killCountText, 10, 30, 24, rl.GREEN);
rl.DrawCircle(
@intFromFloat(player.position.x),
@intFromFloat(player.position.y),
playerSize,
rl.RAYWHITE
);
rl.DrawCircle(
@intFromFloat(handPosition.x),
@intFromFloat(handPosition.y),
5,
rl.RAYWHITE
);
rl.DrawLine(
@intFromFloat(player.position.x),
@intFromFloat(player.position.y),
@intFromFloat(player.position.x + player.velocity.x),
@intFromFloat(player.position.y + player.velocity.y),
rl.GREEN
);
rl.DrawCircle(
@intFromFloat(player.position.x + moveDir.x * maxSpeed),
@intFromFloat(player.position.y + moveDir.y * maxSpeed),
5,
rl.GREEN
);
rope.nodePositions.set(0, handPosition);
const rope_root_node: rl.Vector2 = rope.nodePositions.get(0);
rope.nodePositions.set(0, rope_root_node.lerp(handPosition, 0.25));
// rope.nodePositions.set(0, handPosition);
rope.update(dt);
const rope_color = rl.PURPLE;
for (0..(rope.nodePositions.len-1)) |i| {
var node1: rl.Vector2 = rope.nodePositions.get(i);
var node2: rl.Vector2 = rope.nodePositions.get(i+1);
rl.DrawLine(
@intFromFloat(node1.x),
@intFromFloat(node1.y),
@intFromFloat(node2.x),
@intFromFloat(node2.y),
rope_color
);
}
for (rope.nodePositions.slice()) |node| {
rl.DrawCircle(
@intFromFloat(node.x),
@intFromFloat(node.y),
5,
rope_color
);
}
const deathBallPosition = rope.nodePositions.get(rope.nodePositions.len-1);
rl.DrawCircle(
@intFromFloat(deathBallPosition.x),
@intFromFloat(deathBallPosition.y),
deathBallSize,
rl.RED
);
{
var i: usize = 0;
while (i < enemies.items.len) {
@ -314,4 +259,85 @@ pub fn tick(self: *Self) !void {
i += 1;
}
}
{ // UI
const enemyCountText = try std.fmt.allocPrintZ(allocator, "{d}", .{self.spawnedEnemiesCount});
defer allocator.free(enemyCountText);
rl.DrawText(enemyCountText, 10, 10, 24, rl.RED);
const killCountText = try std.fmt.allocPrintZ(allocator, "{d}", .{self.killCount});
defer allocator.free(killCountText);
rl.DrawText(killCountText, 10, 30, 24, rl.GREEN);
}
rl.BeginMode2D(self.camera);
{
rl.DrawCircle(0, 0, 5, rl.GOLD);
rl.DrawCircle(
@intFromFloat(player.position.x),
@intFromFloat(player.position.y),
playerSize,
rl.RAYWHITE
);
rl.DrawCircle(
@intFromFloat(handPosition.x),
@intFromFloat(handPosition.y),
5,
rl.RAYWHITE
);
rl.DrawLine(
@intFromFloat(player.position.x),
@intFromFloat(player.position.y),
@intFromFloat(player.position.x + player.velocity.x),
@intFromFloat(player.position.y + player.velocity.y),
rl.GREEN
);
rl.DrawCircle(
@intFromFloat(player.position.x + moveDir.x * maxSpeed),
@intFromFloat(player.position.y + moveDir.y * maxSpeed),
5,
rl.GREEN
);
for (enemies.items) |*enemy| {
rl.DrawCircle(
@intFromFloat(enemy.position.x),
@intFromFloat(enemy.position.y),
enemySize,
rl.RED
);
}
const rope_color = rl.PURPLE;
for (0..(rope.nodePositions.len-1)) |i| {
var node1: rl.Vector2 = rope.nodePositions.get(i);
var node2: rl.Vector2 = rope.nodePositions.get(i+1);
rl.DrawLine(
@intFromFloat(node1.x),
@intFromFloat(node1.y),
@intFromFloat(node2.x),
@intFromFloat(node2.y),
rope_color
);
}
for (rope.nodePositions.slice()) |node| {
rl.DrawCircle(
@intFromFloat(node.x),
@intFromFloat(node.y),
5,
rope_color
);
}
rl.DrawCircle(
@intFromFloat(deathBallPosition.x),
@intFromFloat(deathBallPosition.y),
deathBallSize,
rl.RED
);
}
rl.EndMode2D();
}

3
src/main.zig
View File

@ -9,7 +9,8 @@ pub fn main() !void {
defer _ = gpa.deinit();
rl.SetTargetFPS(60);
rl.InitWindow(800, 800, "Step kill");
rl.InitWindow(1200, 1200, "Step kill");
rl.DisableCursor();
defer rl.CloseWindow();
var scene = MainScene.init(allocator);