diff options
Diffstat (limited to 'src/main.zig')
| -rw-r--r-- | src/main.zig | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/src/main.zig b/src/main.zig index 0b98455..68b3167 100644 --- a/src/main.zig +++ b/src/main.zig @@ -64,8 +64,6 @@ const Bug = struct { animation_state: f32 = 0, const animation_switch_threshold = 0.3; // seconds - // TODO: bugs need to know their "previous" square, so they know their next - pub fn init(kind: BugKind, position: rl.Vector2) Bug { return Bug{ .kind = kind, @@ -76,6 +74,51 @@ const Bug = struct { }; } + pub fn update(self: *Bug, delta_time: f32, wave: *Wave) void { + self.animation_time += delta_time; + if (self.animation_time > animation_switch_threshold) { + self.animation_time = 0; + self.animation_state = (self.animation_state + 1) % self.animationCount(); + } + + var velocity: rl.Vector2 = self.target.sub(self.position); + velocity.normalize().multiply(speed(self.kind)); + self.position = self.position.add(velocity); + + // 1 is 1/32th of a cell + if (self.position.distanceSqr(self.target) < 1) { + // Find new target + const prev_grid_x = self.previous.x / cell_size; + const prev_grid_y = self.previous.y / cell_size; + const target_grid_x = self.target.x / cell_size; + const target_grid_y = self.target.y / cell_size; + + const lane_left = wave.get(target_grid_x - 1, target_grid_y).isLaneConnected(); + const lane_right = wave.get(target_grid_x + 1, target_grid_y).isLaneConnected(); + // TODO: are these correct or flipped + const lane_top = wave.get(target_grid_x, target_grid_y - 1).isLaneConnected(); + const lane_bottom = wave.get(target_grid_x, target_grid_y + 1).isLaneConnected(); + + var target: rl.Vector2 = undefined; + if (lane_left and prev_grid_x != target_grid_x - 1) { + target = self.target.add(rl.Vector2.init(-cell_size, 0)); + } else if (lane_right and prev_grid_x != target_grid_x + 1) { + target = self.target.add(rl.Vector2.init(cell_size, 0)); + } else if (lane_top and prev_grid_y != target_grid_y - 1) { + // TODO: are these correct or flipped + target = self.target.add(rl.Vector2.init(0, -cell_size)); + } else if (lane_bottom and prev_grid_y != target_grid_y + 1) { + // TODO: are these correct or flipped + target = self.target.add(rl.Vector2.init(0, cell_size)); + } else { + unreachable; + } + + self.previous = self.target; + self.target = target; + } + } + pub fn maxHealth(kind: BugKind) f32 { return switch (kind) { .nullptr_deref => return 30, @@ -99,6 +142,14 @@ const Bug = struct { .infinite_loop => return 0.5, } * self.health; } + + fn animationCount(kind: BugKind) f32 { + return switch (kind) { + .nullptr_deref => return 2, + .stack_overflow => return 2, + .infinite_loop => return 6, + }; + } }; const Condition = union(enum) { @@ -466,9 +517,6 @@ const ScreenBattle = struct { } const half_cell = cell_size / 2; - if (self.wave.bugs.items.len == 0) { - self.wave.bugs.append(Bug.init(.stack_overflow, rl.Vector2.init(half_cell, 4 * cell_size + half_cell))) catch unreachable; - } for (self.wave.bugs.items) |bug| { const texture = switch (bug.kind) { |