cyberarm/i-mic-rts
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Working Camera#transform 😩

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Cyberarm
2019-10-07 21:32:52 -05:00
parent 5d8712946d
commit dcd8459462
3 changed files with 24 additions and 20 deletions
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22
lib/camera.rb
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@@ -22,6 +22,8 @@ class IMICRTS
Gosu.clip_to(@viewport.min.x, @viewport.min.y, @viewport.max.x, @viewport.max.y) do
Gosu.transform(*worldspace.elements) do
block.call
Gosu.draw_line(@drag_start.x, @drag_start.y, Gosu::Color::RED, window.mouse.x, window.mouse_x, Gosu::Color::RED, Float::INFINITY) if @drag_start
end
end
end
@@ -37,14 +39,14 @@ class IMICRTS
@viewport.max.y = window.height
end
def pick(vector)
def transform(vector)
neg_center = CyberarmEngine::Vector.new(-center.x, -center.y)
scaled_position = ((vector - (@position)) / @zoom)
scaled_position = (vector) / @zoom
scaled_translation = (neg_center / @zoom + center)
# TODO: Fix error caused when @position != 0
inverse = (scaled_position + scaled_translation)
inverse = (scaled_position + scaled_translation) - @position
inverse.x = inverse.x.floor
inverse.y = inverse.y.floor
@@ -84,14 +86,14 @@ class IMICRTS
end
def move
@velocity.x += @scroll_speed * window.dt if Gosu.button_down?(Gosu::KB_LEFT) || window.mouse_x < 15
@velocity.x -= @scroll_speed * window.dt if Gosu.button_down?(Gosu::KB_RIGHT) || window.mouse_x > window.width - 15
@velocity.y += @scroll_speed * window.dt if Gosu.button_down?(Gosu::KB_UP) || window.mouse_y < 15
@velocity.y -= @scroll_speed * window.dt if Gosu.button_down?(Gosu::KB_DOWN) || window.mouse_y > window.height - 15
@velocity.x += (@scroll_speed / @zoom) * window.dt if Gosu.button_down?(Gosu::KB_LEFT) || window.mouse_x < 15
@velocity.x -= (@scroll_speed / @zoom) * window.dt if Gosu.button_down?(Gosu::KB_RIGHT) || window.mouse_x > window.width - 15
@velocity.y += (@scroll_speed / @zoom) * window.dt if Gosu.button_down?(Gosu::KB_UP) || window.mouse_y < 15
@velocity.y -= (@scroll_speed / @zoom) * window.dt if Gosu.button_down?(Gosu::KB_DOWN) || window.mouse_y > window.height - 15
if @drag_start
@velocity *= 0.0
@position = @position.lerp(@drag_start - CyberarmEngine::Vector.new(window.mouse_x, window.mouse_y), @grab_drag)
@position = @position.lerp(@drag_start - window.mouse.clone, @grab_drag / @zoom)
end
end
@@ -105,7 +107,7 @@ class IMICRTS
when Gosu::MS_WHEEL_DOWN
@zoom = (@zoom - 0.25).clamp(@min_zoom, @max_zoom)
when Gosu::MS_MIDDLE
@drag_start = pick(CyberarmEngine::Vector.new(window.mouse_x, window.mouse_y))
@drag_start = transform(window.mouse)
end
end