Created
September 2, 2024 20:43
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| local function check_collision(self, pos) | |
| local function draw_ray(from, to) | |
| local groups = { hash("level") } | |
| local color = vmath.vector4(0, 1, 0, 1) | |
| return data.draw_ray(from, to, groups, color) | |
| end | |
| self.ray_origins = { | |
| tl = self.old_pos + self.col_pos.tl, | |
| tr = self.old_pos + self.col_pos.tr, | |
| bl = self.old_pos + self.col_pos.bl, | |
| br = self.old_pos + self.col_pos.br, | |
| } | |
| local hit_x = nil | |
| local ceil_check = nil | |
| local ground_check = nil | |
| for _, value in pairs(self.ray_origins) do | |
| data.utils.debugdraw.circle(value.x, value.y, 2) | |
| end | |
| if self.velocity.x > 0 then | |
| hit_x = draw_ray(self.ray_origins.tl, self.ray_origins.tl + data.utils.vector.right * ray_size) | |
| hit_x = draw_ray(self.ray_origins.bl, self.ray_origins.bl + data.utils.vector.right * ray_size) | |
| elseif self.velocity.x < 0 then | |
| hit_x = draw_ray(self.ray_origins.tr, self.ray_origins.tr + data.utils.vector.left * ray_size) | |
| hit_x = draw_ray(self.ray_origins.br, self.ray_origins.br + data.utils.vector.left * ray_size) | |
| end | |
| if self.velocity.y > 0 then | |
| ceil_check = draw_ray(self.ray_origins.bl, self.ray_origins.bl + data.utils.vector.up * ray_size) | |
| if not ceil_check then | |
| ceil_check = draw_ray(self.ray_origins.br, self.ray_origins.br + data.utils.vector.up * ray_size) | |
| end | |
| end | |
| ground_check = draw_ray(self.ray_origins.tl, self.ray_origins.tl + data.utils.vector.down * ray_size) | |
| if not ground_check then | |
| ground_check = draw_ray(self.ray_origins.tr, self.ray_origins.tr + data.utils.vector.down * ray_size) | |
| end | |
| if hit_x then | |
| local hit = hit_x[1] | |
| local hit_pos = hit.position | |
| local hit_pos = data.round_vector3(hit_pos) | |
| data.utils.debugdraw.circle(hit_pos.x, hit_pos.y, 10) | |
| local new_pos_x | |
| local wall_x | |
| if hit.normal.x > 0 then | |
| wall_x = data.tile2world(data.world2tile(hit_pos) + data.utils.vector.left).x + data.TILE_SIZE / 2 | |
| new_pos_x = (pos + self.col_pos.bl).x | |
| elseif hit.normal.x < 0 then | |
| wall_x = data.tile2world(data.world2tile(hit_pos)).x - data.TILE_SIZE / 2 | |
| new_pos_x = (pos + self.col_pos.br).x | |
| end | |
| local diff_new_pos = math.abs(new_pos_x - wall_x) | |
| if (diff_new_pos <= 0) then | |
| pos.x = self.old_pos.x | |
| self.velocity.x = 0 | |
| end | |
| end | |
| if ceil_check then | |
| local hit = ceil_check[1] | |
| local hit_pos = data.round_vector3(hit.position) | |
| data.utils.debugdraw.circle(hit_pos.x, hit_pos.y, 10) | |
| if hit.normal.y < 0 then | |
| local new_top_pos = (pos + self.col_pos.tl).y | |
| local hit_pos_y = hit_pos.y | |
| if new_top_pos >= hit_pos_y then | |
| new_top_pos = hit_pos_y | |
| pos.y = data.round(new_top_pos - self.col_pos.tl.y) | |
| self.velocity.y = 0 | |
| end | |
| end | |
| end | |
| if ground_check then | |
| local hit = ground_check[1] | |
| local hit_pos = data.round_vector3(hit.position) | |
| data.utils.debugdraw.circle(hit_pos.x, hit_pos.y, 10) | |
| if hit.normal.y > 0 then | |
| local wall_y | |
| wall_y = data.tile2world(data.world2tile(hit_pos) + data.utils.vector.down).y + data.TILE_SIZE / 2 | |
| local new_bot_pos_y = (pos + self.col_pos.bl).y | |
| if new_bot_pos_y <= wall_y then | |
| new_bot_pos_y = wall_y | |
| pos.y = data.round(new_bot_pos_y - self.col_pos.br.y + 1) | |
| self.is_grounded = true | |
| self.velocity.y = 0 | |
| end | |
| end | |
| else | |
| self.is_grounded = false | |
| end | |
| return pos | |
| end |
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