69 lines
2.8 KiB
Lua
69 lines
2.8 KiB
Lua
require("string")
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require("level")
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require("render")
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function lerp(a, b, x)
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return a + ((b - a) * x)
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end
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function qlerp(a, b, x)
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return lerp(a, b, x * x)
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end
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function game_tick()
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if ctx.udata == nil then
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ctx.udata = {
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level = load_level("levels/00.lvl")
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}
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ctx.udata.player = {
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position = ctx.udata.level.classes.player_spawn.position,
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position_lerp = ctx.udata.level.classes.player_spawn.position,
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direction = { x = 1, y = 0, z = 0 },
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direction_lerp = { x = 1, y = 0, z = 0 },
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}
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end
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input_action { control = "A", name = "turn_left" }
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input_action { control = "D", name = "turn_right" }
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input_action { control = "W", name = "walk_forward" }
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input_action { control = "S", name = "walk_backward" }
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if input_action_just_released { name = "turn_left" } then
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ctx.udata.player.direction = { x = ctx.udata.player.direction.z, y = ctx.udata.player.direction.y, z = -ctx.udata.player.direction.x }
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end
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if input_action_just_released { name = "turn_right" } then
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ctx.udata.player.direction = { x = -ctx.udata.player.direction.z, y = ctx.udata.player.direction.y, z = ctx.udata.player.direction.x }
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end
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local move = { x = 0, y = 0 }
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if input_action_just_released { name = "walk_forward" } then
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move = { x = move.x + ctx.udata.player.direction.z, y = move.y + ctx.udata.player.direction.x }
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end
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if input_action_just_released { name = "walk_backward" } then
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move = { x = move.x - ctx.udata.player.direction.z, y = move.y - ctx.udata.player.direction.x }
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end
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if ctx.udata.level.grid[ctx.udata.player.position.y + move.y][ctx.udata.player.position.x + move.x].solid ~= nil then
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move = { x = 0, y = 0 }
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end
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ctx.udata.player.position = { x = ctx.udata.player.position.x + move.x, y = ctx.udata.player.position.y + move.y }
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ctx.udata.player.position_lerp.x = qlerp(ctx.udata.player.position_lerp.x, ctx.udata.player.position.x, ctx.frame_duration * 30)
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ctx.udata.player.position_lerp.y = qlerp(ctx.udata.player.position_lerp.y, ctx.udata.player.position.y, ctx.frame_duration * 30)
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ctx.udata.player.direction_lerp.x = qlerp(ctx.udata.player.direction_lerp.x, ctx.udata.player.direction.x, ctx.frame_duration * 40)
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ctx.udata.player.direction_lerp.z = qlerp(ctx.udata.player.direction_lerp.z, ctx.udata.player.direction.z, ctx.frame_duration * 40)
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draw_camera {
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position = {
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x = ctx.udata.player.position_lerp.y * 2 + 1 - ctx.udata.player.direction.x / 2,
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y = 1,
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z = ctx.udata.player.position_lerp.x * 2 + 1 - ctx.udata.player.direction.z / 2,
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},
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direction = ctx.udata.player.direction_lerp,
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}
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render_dungeon(ctx.udata.level)
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end
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